{"pageNumber":"474","pageRowStart":"11825","pageSize":"25","recordCount":68892,"records":[{"id":70157562,"text":"70157562 - 2015 - A statistical learning framework for groundwater nitrate models of the Central Valley, California, USA","interactions":[],"lastModifiedDate":"2015-12-08T13:39:29","indexId":"70157562","displayToPublicDate":"2015-12-08T14:30:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"A statistical learning framework for groundwater nitrate models of the Central Valley, California, USA","docAbstract":"<p><span>We used a statistical learning framework to evaluate the ability of three machine-learning methods to predict nitrate concentration in shallow groundwater of the Central Valley, California: boosted regression trees (BRT), artificial neural networks (ANN), and Bayesian networks (BN). Machine learning methods can learn complex patterns in the data but because of overfitting may not generalize well to new data. The statistical learning framework involves cross-validation (CV) training and testing data and a separate hold-out data set for model evaluation, with the goal of optimizing predictive performance by controlling for model overfit. The order of prediction performance according to both CV testing&nbsp;</span><i>R</i><sup>2</sup><span>&nbsp;and that for the hold-out data set was BRT&nbsp;&gt;&nbsp;BN&nbsp;&gt;&nbsp;ANN. For each method we identified two models based on CV testing results: that with maximum testing&nbsp;</span><i>R</i><sup>2</sup><span>&nbsp;and a version with&nbsp;</span><i>R</i><sup>2</sup><span>&nbsp;within one standard error of the maximum (the 1SE model). The former yielded CV training&nbsp;</span><i>R</i><sup>2</sup><span>&nbsp;values of 0.94&ndash;1.0. Cross-validation testing&nbsp;</span><i>R</i><sup>2</sup><span>&nbsp;values indicate predictive performance, and these were 0.22&ndash;0.39 for the maximum&nbsp;</span><i>R</i><sup>2</sup><span>&nbsp;models and 0.19&ndash;0.36 for the 1SE models. Evaluation with hold-out data suggested that the 1SE BRT and ANN models predicted better for an independent data set compared with the maximum&nbsp;</span><i>R</i><sup>2</sup><span>&nbsp;versions, which is relevant to extrapolation by mapping. Scatterplots of predicted vs. observed hold-out data obtained for final models helped identify prediction bias, which was fairly pronounced for ANN and BN. Lastly, the models were compared with multiple linear regression (MLR) and a previous random forest regression (RFR) model. Whereas BRT results were comparable to RFR, MLR had low hold-out&nbsp;</span><i>R</i><sup>2</sup><span>&nbsp;(0.07) and explained less than half the variation in the training data. Spatial patterns of predictions by the final, 1SE BRT model agreed reasonably well with previously observed patterns of nitrate occurrence in groundwater of the Central Valley.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.jhydrol.2015.10.025","usgsCitation":"Nolan, B.T., Fienen, M., and Lorenz, D.L., 2015, A statistical learning framework for groundwater nitrate models of the Central Valley, California, USA: Journal of Hydrology, v. 531, no. 3, p. 902-911, https://doi.org/10.1016/j.jhydrol.2015.10.025.","productDescription":"10 p.","startPage":"902","endPage":"911","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-065964","costCenters":[{"id":451,"text":"National Water Quality Assessment Program","active":true,"usgs":true}],"links":[{"id":471571,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1016/j.jhydrol.2015.10.025","text":"Publisher Index Page"},{"id":312041,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -122.025146484375,\n              40.73893324113603\n            ],\n            [\n              -122.93701171874999,\n              40.38002840251183\n            ],\n            [\n              -122.16796875,\n              38.048091067457236\n            ],\n            [\n              -119.39941406249999,\n              34.95799531086792\n            ],\n            [\n              -118.67431640625,\n              34.97600151317591\n            ],\n            [\n              -118.795166015625,\n              36.19995805932895\n            ],\n            [\n              -120.92651367187499,\n              38.38472766885085\n            ],\n            [\n              -122.025146484375,\n              40.73893324113603\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"531","issue":"3","publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5667ff32e4b06a3ea36c8e04","contributors":{"authors":[{"text":"Nolan, Bernard T. 0000-0002-6945-9659 btnolan@usgs.gov","orcid":"https://orcid.org/0000-0002-6945-9659","contributorId":2190,"corporation":false,"usgs":true,"family":"Nolan","given":"Bernard","email":"btnolan@usgs.gov","middleInitial":"T.","affiliations":[{"id":27111,"text":"National Water Quality Program","active":true,"usgs":true},{"id":451,"text":"National Water Quality Assessment Program","active":true,"usgs":true}],"preferred":true,"id":573640,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fienen, Michael N. 0000-0002-7756-4651 mnfienen@usgs.gov","orcid":"https://orcid.org/0000-0002-7756-4651","contributorId":893,"corporation":false,"usgs":true,"family":"Fienen","given":"Michael N.","email":"mnfienen@usgs.gov","affiliations":[{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"preferred":false,"id":573641,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lorenz, David L. 0000-0003-3392-4034 lorenz@usgs.gov","orcid":"https://orcid.org/0000-0003-3392-4034","contributorId":1384,"corporation":false,"usgs":true,"family":"Lorenz","given":"David","email":"lorenz@usgs.gov","middleInitial":"L.","affiliations":[{"id":392,"text":"Minnesota Water Science Center","active":true,"usgs":true}],"preferred":true,"id":573642,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70160008,"text":"70160008 - 2015 - Surprise and opportunity for learning in Grand Canyon: the Glen Canyon Dam Adaptive Management Program","interactions":[],"lastModifiedDate":"2015-12-08T12:25:42","indexId":"70160008","displayToPublicDate":"2015-12-08T13:15:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1468,"text":"Ecology and Society","active":true,"publicationSubtype":{"id":10}},"title":"Surprise and opportunity for learning in Grand Canyon: the Glen Canyon Dam Adaptive Management Program","docAbstract":"<p><span>With a focus on resources of the Colorado River ecosystem below Glen Canyon Dam, the Glen Canyon Dam Adaptive Management Program has included a variety of experimental policy tests, ranging from manipulation of water releases from the dam to removal of non-native fish within Grand Canyon National Park. None of these field-scale experiments has yet produced unambiguous results in terms of management prescriptions. But there has been adaptive learning, mostly from unanticipated or surprising resource responses relative to predictions from ecosystem modeling. Surprise learning opportunities may often be viewed with dismay by some stakeholders who might not be clear about the purpose of science and modeling in adaptive management. However, the experimental results from the Glen Canyon Dam program actually represent scientific successes in terms of revealing new opportunities for developing better river management policies. A new long-term experimental management planning process for Glen Canyon Dam operations, started in 2011 by the U.S. Department of the Interior, provides an opportunity to refocus management objectives, identify and evaluate key uncertainties about the influence of dam releases, and refine monitoring for learning over the next several decades. Adaptive learning since 1995 is critical input to this long-term planning effort. Embracing uncertainty and surprise outcomes revealed by monitoring and ecosystem modeling will likely continue the advancement of resource objectives below the dam, and may also promote efficient learning in other complex programs.</span></p>","language":"English","publisher":"The Resilience Alliance","doi":"10.5751/ES-07621-200322","usgsCitation":"Melis, T., Walters, C., and Korman, J., 2015, Surprise and opportunity for learning in Grand Canyon: the Glen Canyon Dam Adaptive Management Program: Ecology and Society, v. 20, no. 3, Art22; 33 p., https://doi.org/10.5751/ES-07621-200322.","productDescription":"Art22; 33 p.","numberOfPages":"33","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-022401","costCenters":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true}],"links":[{"id":471572,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.5751/es-07621-200322","text":"Publisher Index Page"},{"id":312037,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona, Nevada, Utah","otherGeospatial":"Colorado River, Glen Canyon Dam, Grand Canyon National Park, Lake Mead","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -114.60937499999999,\n              35.33977430038646\n            ],\n            [\n              -114.60937499999999,\n              37.37015718405753\n            ],\n            [\n              -110.76416015625,\n              37.37015718405753\n            ],\n            [\n              -110.76416015625,\n              35.33977430038646\n            ],\n            [\n              -114.60937499999999,\n              35.33977430038646\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"20","issue":"3","publishingServiceCenter":{"id":14,"text":"Menlo Park PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5667ff3ce4b06a3ea36c8e12","contributors":{"authors":[{"text":"Melis, Theodore S. 0000-0003-0473-3968 tmelis@usgs.gov","orcid":"https://orcid.org/0000-0003-0473-3968","contributorId":1829,"corporation":false,"usgs":true,"family":"Melis","given":"Theodore S.","email":"tmelis@usgs.gov","affiliations":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true}],"preferred":true,"id":581538,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Walters, Carl","contributorId":66156,"corporation":false,"usgs":true,"family":"Walters","given":"Carl","affiliations":[],"preferred":false,"id":581539,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Korman, Josh","contributorId":29922,"corporation":false,"usgs":true,"family":"Korman","given":"Josh","affiliations":[],"preferred":false,"id":581540,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70159406,"text":"sir20155153 - 2015 - Simulation of the effects of different inflows on hydrologic conditions in Lake Houston with a three-dimensional hydrodynamic model, Houston, Texas, 2009–10","interactions":[],"lastModifiedDate":"2020-05-19T18:00:59.387807","indexId":"sir20155153","displayToPublicDate":"2015-12-08T12:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2015-5153","title":"Simulation of the effects of different inflows on hydrologic conditions in Lake Houston with a three-dimensional hydrodynamic model, Houston, Texas, 2009–10","docAbstract":"<p>Lake Houston, an important water resource for the Houston, Texas, area, receives inflows from seven major tributaries that compose the San Jacinto River Basin upstream from the reservoir. The effects of different inflows from the watersheds drained by these tributaries on the residence time of water in Lake Houston and closely associated physical and chemical properties including lake elevation, salinity, and water temperature are not well known. Accordingly, the U.S. Geological Survey (USGS), in cooperation with the City of Houston, developed a three-dimensional hydrodynamic model of Lake Houston as a tool for evaluating the effects of different inflows on residence time of water in the lake and associated physical and chemical properties. The Environmental Fluid Dynamics Code (EFDC), a grid-based, surface-water modeling package for simulating three-dimensional circulation, mass transport, sediments, and biogeochemical processes, was used to develop the model of Lake Houston. The Lake Houston EFDC model was developed and calibrated by using 2009 data and verified by using 2010 data. Three statistics (mean error, root mean square error, and the Nash-Sutcliffe model efficiency coefficient) were used to evaluate how well the Lake Houston EFDC model simulated lake elevation, salinity, and water temperature. The residence time of water in reservoirs is associated with various physical and chemical properties (including lake elevation, salinity, and water temperature). Simulated and measured lake-elevation values were compared at USGS reservoir station 08072000 Lake Houston near Sheldon, Tex. The accuracy of simulated salinity and water temperature values was assessed by using the salinity (computed from measured specific conductance) and water temperature at two USGS monitoring stations: 295826095082200 Lake Houston south Union Pacific Railroad Bridge near Houston, Tex., and 295554095093401 Lake Houston at mouth of Jack&rsquo;s Ditch near Houston, Tex. Specific conductance and water temperature were measured at as many as four different depths at each of the two monitoring stations during 2009 and then used for assessing the accuracy of simulated values of salinity and water temperature during 2010. The performance evaluation statistics indicate that the model performed satisfactorily. The calibrated model was used to simulate two possible inflow scenarios to evaluate the changes in the residence time of water in Lake Houston. The two scenarios tested were an increased inflow of approximately 300 cubic feet per second for 1 month (May 2010) from two watersheds: the West Fork San Jacinto River and Luce Bayou. These scenarios were chosen to mimic the effects of possible small releases or diversions of water from outside the San Jacinto River Basin into the basin (or directly into the lake) on the residence time of water in Lake Houston. During the time of increased inflow for the two scenarios tested, maximum residence time decreased slightly from approximately 106 to 97 days.</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20155153","collaboration":"Prepared in cooperation with the City of Houston","usgsCitation":"Rendon, S.H., and Lee, M.T., 2015, Simulation of the effects of different inflows on hydrologic conditions in Lake Houston with a three-dimensional hydrodynamic model, Houston, Texas, 2009–10: U.S. Geological Survey Scientific Investigations Report 2015–5153, 42 p., https://dx.doi.org/10.3133/sir20155153.","productDescription":"vi, 42 p.","numberOfPages":"52","onlineOnly":"Y","additionalOnlineFiles":"N","ipdsId":"IP-060635","costCenters":[{"id":583,"text":"Texas Water Science Center","active":true,"usgs":true}],"links":[{"id":311980,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2015/5153/sir20155153.pdf","text":"Report","size":"13.1 MB","linkFileType":{"id":1,"text":"pdf"},"description":"SIR 2015-5153"},{"id":311979,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/sir/2015/5153/coverthb.jpg"}],"country":"United States","state":"Texas","otherGeospatial":"Lake Houston","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -95.99578857421875,\n              29.90256760730233\n            ],\n            [\n              -95.99578857421875,\n              30.62845887475364\n            ],\n            [\n              -95.10040283203125,\n              30.62845887475364\n            ],\n            [\n              -95.10040283203125,\n              29.90256760730233\n            ],\n            [\n              -95.99578857421875,\n              29.90256760730233\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","contact":"<p><a href=\"mailto:dc_tx@usgs.gov\">Director</a>, Texas Water Science Center<br /> U.S. Geological Survey<br /> 1505 Ferguson Lane<br /> Austin, Texas 78754&ndash;4501<br /><a href=\"http://tx.usgs.gov/\">http://tx.usgs.gov/</a></p>","tableOfContents":"<ul>\n<li>Abstract</li>\n<li>Introduction</li>\n<li>Methods of Data Collection</li>\n<li>Development of a Three-Dimensional Hydrodynamic Model</li>\n<li>Simulation of the Effects of Different Inflows on Hydrologic Conditions in Lake Houston</li>\n<li>Summary</li>\n<li>References Cited</li>\n</ul>","publishingServiceCenter":{"id":5,"text":"Lafayette PSC"},"publishedDate":"2015-12-08","noUsgsAuthors":false,"publicationDate":"2015-12-08","publicationStatus":"PW","scienceBaseUri":"5667ff3be4b06a3ea36c8e10","contributors":{"authors":[{"text":"Rendon, Samuel H. 0000-0001-5589-0563 srendon@usgs.gov","orcid":"https://orcid.org/0000-0001-5589-0563","contributorId":3940,"corporation":false,"usgs":true,"family":"Rendon","given":"Samuel","email":"srendon@usgs.gov","middleInitial":"H.","affiliations":[{"id":583,"text":"Texas Water Science Center","active":true,"usgs":true}],"preferred":true,"id":578429,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lee, Michael T. 0000-0002-8260-8794 mtlee@usgs.gov","orcid":"https://orcid.org/0000-0002-8260-8794","contributorId":4228,"corporation":false,"usgs":true,"family":"Lee","given":"Michael","email":"mtlee@usgs.gov","middleInitial":"T.","affiliations":[{"id":583,"text":"Texas Water Science Center","active":true,"usgs":true}],"preferred":true,"id":578430,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70171004,"text":"70171004 - 2015 - Reviews and syntheses: Effects of permafrost thaw on Arctic aquatic ecosystems","interactions":[],"lastModifiedDate":"2016-05-17T10:15:51","indexId":"70171004","displayToPublicDate":"2015-12-08T05:15:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1011,"text":"Biogeosciences","active":true,"publicationSubtype":{"id":10}},"title":"Reviews and syntheses: Effects of permafrost thaw on Arctic aquatic ecosystems","docAbstract":"<p><span class=\"pb_abstract\">The Arctic is a water-rich region, with freshwater systems covering about 16 % of the northern permafrost landscape. Permafrost thaw creates new freshwater ecosystems, while at the same time modifying the existing lakes, streams, and rivers that are impacted by thaw. Here, we describe the current state of knowledge regarding how permafrost thaw affects lentic (still) and lotic (moving) systems, exploring the effects of both thermokarst (thawing and collapse of ice-rich permafrost) and deepening of the active layer (the surface soil layer that thaws and refreezes each year). Within thermokarst, we further differentiate between the effects of thermokarst in lowland areas vs. that on hillslopes. For almost all of the processes that we explore, the effects of thaw vary regionally, and between lake and stream systems. Much of this regional variation is caused by differences in ground ice content, topography, soil type, and permafrost coverage. Together, these modifying factors determine (i) the degree to which permafrost thaw manifests as thermokarst, (ii) whether thermokarst leads to slumping or the formation of thermokarst lakes, and (iii) the manner in which constituent delivery to freshwater systems is altered by thaw. Differences in thaw-enabled constituent delivery can be considerable, with these modifying factors determining, for example, the balance between delivery of particulate vs. dissolved constituents, and inorganic vs. organic materials. Changes in the composition of thaw-impacted waters, coupled with changes in lake morphology, can strongly affect the physical and optical properties of thermokarst lakes. The ecology of thaw-impacted lakes and streams is also likely to change; these systems have unique microbiological communities, and show differences in respiration, primary production, and food web structure that are largely driven by differences in sediment, dissolved organic matter, and nutrient delivery. The degree to which thaw enables the delivery of dissolved vs. particulate organic matter, coupled with the composition of that organic matter and the morphology and stratification characteristics of recipient systems will play an important role in determining the balance between the release of organic matter as greenhouse gases (CO<span>2</span>&nbsp;and CH<span>4</span>), its burial in sediments, and its loss downstream. The magnitude of thaw impacts on northern aquatic ecosystems is increasing, as is the prevalence of thaw-impacted lakes and streams. There is therefore an urgent need to quantify how permafrost thaw is affecting aquatic ecosystems across diverse Arctic landscapes, and the implications of this change for further climate warming.</span></p>\n<p>&nbsp;</p>","language":"English","publisher":"European Geosciences Union","doi":"10.5194/bg-12-7129-2015","usgsCitation":"Vonk, J., Tank, S., Bowden, W., Laurion, I., Vincent, W., Alekseychik, P., Amyot, Y., Billet, M., Canario, J., Cory, R., Deshpande, B., Helbig, M., Jammet, M., Karlsson, J., Larouche, J., MacMillan, G., Rautio, M., Walter Anthony, K., and Wickland, K.P., 2015, Reviews and syntheses: Effects of permafrost thaw on Arctic aquatic ecosystems: Biogeosciences, v. 12, p. 7129-7167, https://doi.org/10.5194/bg-12-7129-2015.","productDescription":"39 p.","startPage":"7129","endPage":"7167","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-066263","costCenters":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"links":[{"id":471575,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.5194/bg-12-7129-2015","text":"Publisher Index Page"},{"id":321284,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"12","publishingServiceCenter":{"id":2,"text":"Denver PSC"},"noUsgsAuthors":false,"publicationDate":"2015-12-08","publicationStatus":"PW","scienceBaseUri":"574d6643e4b07e28b6684d99","contributors":{"authors":[{"text":"Vonk, J.E.","contributorId":167792,"corporation":false,"usgs":false,"family":"Vonk","given":"J.E.","affiliations":[],"preferred":false,"id":629458,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Tank, S.E.","contributorId":169370,"corporation":false,"usgs":false,"family":"Tank","given":"S.E.","email":"","affiliations":[{"id":12799,"text":"University of Alberta, Edmonton, Alberta, Canada","active":true,"usgs":false}],"preferred":false,"id":629459,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bowden, W.B.","contributorId":83237,"corporation":false,"usgs":true,"family":"Bowden","given":"W.B.","email":"","affiliations":[],"preferred":false,"id":629460,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Laurion, I.","contributorId":169371,"corporation":false,"usgs":false,"family":"Laurion","given":"I.","affiliations":[{"id":25483,"text":"Institut national de la recherche scientifique, Quebec CIty, Canada","active":true,"usgs":false}],"preferred":false,"id":629461,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Vincent, W.F.","contributorId":169372,"corporation":false,"usgs":false,"family":"Vincent","given":"W.F.","email":"","affiliations":[{"id":25484,"text":"Université Laval, Québec City, Canada","active":true,"usgs":false}],"preferred":false,"id":629462,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Alekseychik, P.","contributorId":169373,"corporation":false,"usgs":false,"family":"Alekseychik","given":"P.","affiliations":[{"id":18162,"text":"University of Helsinki","active":true,"usgs":false}],"preferred":false,"id":629463,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Amyot, Y.","contributorId":169374,"corporation":false,"usgs":false,"family":"Amyot","given":"Y.","email":"","affiliations":[{"id":25485,"text":"Université de Montréal, Canada","active":true,"usgs":false}],"preferred":false,"id":629464,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Billet, M.F.","contributorId":169375,"corporation":false,"usgs":false,"family":"Billet","given":"M.F.","email":"","affiliations":[{"id":25486,"text":"University of Stirling, UK","active":true,"usgs":false}],"preferred":false,"id":629465,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Canario, J.","contributorId":169376,"corporation":false,"usgs":false,"family":"Canario","given":"J.","affiliations":[{"id":25487,"text":"Universidade de Lisboa, Lisboa, Portugal","active":true,"usgs":false}],"preferred":false,"id":629466,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Cory, R.M.","contributorId":72186,"corporation":false,"usgs":true,"family":"Cory","given":"R.M.","email":"","affiliations":[],"preferred":false,"id":629467,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Deshpande, B.N.","contributorId":169377,"corporation":false,"usgs":false,"family":"Deshpande","given":"B.N.","email":"","affiliations":[{"id":25484,"text":"Université Laval, Québec City, Canada","active":true,"usgs":false}],"preferred":false,"id":629468,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Helbig, M.","contributorId":169378,"corporation":false,"usgs":false,"family":"Helbig","given":"M.","email":"","affiliations":[{"id":25485,"text":"Université de Montréal, Canada","active":true,"usgs":false}],"preferred":false,"id":629469,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Jammet, M.","contributorId":169379,"corporation":false,"usgs":false,"family":"Jammet","given":"M.","email":"","affiliations":[{"id":25488,"text":"University of Copenhagen, Copenhagen, Denmark","active":true,"usgs":false}],"preferred":false,"id":629470,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Karlsson, J.","contributorId":169380,"corporation":false,"usgs":false,"family":"Karlsson","given":"J.","email":"","affiliations":[{"id":25489,"text":"Umeå University, Abisko, Sweden","active":true,"usgs":false}],"preferred":false,"id":629471,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Larouche, J.","contributorId":169381,"corporation":false,"usgs":false,"family":"Larouche","given":"J.","email":"","affiliations":[{"id":6735,"text":"University of Vermont, Rubenstein School of Environment and Natural Resources","active":true,"usgs":false}],"preferred":false,"id":629472,"contributorType":{"id":1,"text":"Authors"},"rank":15},{"text":"MacMillan, G.","contributorId":169382,"corporation":false,"usgs":false,"family":"MacMillan","given":"G.","email":"","affiliations":[{"id":25490,"text":"Université de Montréal, Montreal, Canada","active":true,"usgs":false}],"preferred":false,"id":629473,"contributorType":{"id":1,"text":"Authors"},"rank":16},{"text":"Rautio, Milla","contributorId":169383,"corporation":false,"usgs":false,"family":"Rautio","given":"Milla","email":"","affiliations":[{"id":25491,"text":"Université du Québec à Chicoutimi, Canada","active":true,"usgs":false}],"preferred":false,"id":629474,"contributorType":{"id":1,"text":"Authors"},"rank":17},{"text":"Walter Anthony, K.M.","contributorId":169384,"corporation":false,"usgs":false,"family":"Walter Anthony","given":"K.M.","email":"","affiliations":[{"id":6752,"text":"University of Alaska Fairbanks","active":true,"usgs":false}],"preferred":false,"id":629475,"contributorType":{"id":1,"text":"Authors"},"rank":18},{"text":"Wickland, Kimberly P. 0000-0002-6400-0590 kpwick@usgs.gov","orcid":"https://orcid.org/0000-0002-6400-0590","contributorId":1835,"corporation":false,"usgs":true,"family":"Wickland","given":"Kimberly","email":"kpwick@usgs.gov","middleInitial":"P.","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":629457,"contributorType":{"id":1,"text":"Authors"},"rank":19}]}}
,{"id":70159636,"text":"sir20155166 - 2015 - Occurrence and transport of selected constituents in streams near the Stibnite mining area, Central Idaho, 2012–14","interactions":[],"lastModifiedDate":"2016-01-05T08:28:48","indexId":"sir20155166","displayToPublicDate":"2015-12-07T17:45:00","publicationYear":"2015","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2015-5166","title":"Occurrence and transport of selected constituents in streams near the Stibnite mining area, Central Idaho, 2012–14","docAbstract":"<p>Mining of stibnite (antimony sulfide), tungsten, gold, silver, and mercury near the town of Stibnite in central Idaho has left a legacy of trace element contamination in local streams. Water-quality and streamflow monitoring data from a network of five streamflow-gaging stations were used to estimate trace-element and suspended-sediment loads and flow-weighted concentrations in the Stibnite mining area between 2012 and 2014. Measured concentrations of arsenic exceeded human health-based water-quality criteria at each streamflow-gaging station, except for Meadow Creek (site 2), which was selected to represent background conditions in the study area. Measured concentrations of antimony exceeded human health-based water-quality criteria at sites 3, 4, and 5.</p>\n<p>Regression models developed using the U.S. Geological Survey LOAD ESTimation (LOADEST) program showed that concentrated sources of arsenic and antimony are present in specific reaches along Meadow Creek and the East Fork of South Fork of the Salmon River (EFSFSR) between the EFSFSR at Stibnite (site 3) and the EFSFSR above Sugar Creek (site 4). Eighty percent of the arsenic and antimony loads were attributable to discrete reaches that accounted for 25 percent of the total streamflow in the study area. Streamflow was negatively correlated with arsenic and antimony concentrations, indicating groundwater sources. Continuously monitored specific conductance, alone or combined with continuously computed streamflow, was more significant than streamflow alone as a surrogate measure of dissolved arsenic and antimony concentrations. Surrogate regression models (with coefficients of determination ranging from 0.96 to 0.65) can be used to estimate arsenic and antimony concentrations in real time at all five streamflow-gaging stations.</p>\n<p>LOADEST model simulation results indicated hysteresis in transport of suspended sediment and sediment-associated constituents. Predictor variables that account for streamflow variability reduced model bias and root mean square error when included in regression models used to estimate concentrations and loads of suspended sediment, total aluminum, total lead, and total mercury.</p>\n<p>Ninety-eight percent of the estimated total mercury load transported downstream of the study area is attributable to Sugar Creek. A maximum concentration of 26 micrograms per liter was measured in Sugar Creek during May 2013 when snowmelt runoff occurred during a single peak in the hydrograph. Monitoring and modeling results indicate sediment and sediment-associated constituent concentrations and loads increase along Meadow Creek, likely because of the inflow of the East Fork of Meadow Creek, and decrease between sites 3 and 4 because the Glory Hole is trapping sediments. Sugar Creek (site 5) accounted for most of the sediment and sediment-associated constituent loading leaving the study area because loads from the East Fork of Meadow Creek remained trapped in the Glory Hole. Additionally, total mercury was detected at all five streamflow-gaging stations, and sampled mercury concentrations exceeded Idaho ambient water-quality criteria at all five streamflow-gaging stations.</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20155166","collaboration":"Prepared in cooperation with the Idaho Department of Lands and the Midas Gold Corporation","usgsCitation":"Etheridge, A.B., 2015, Occurrence and transport of selected constituents in streams near the Stibnite mining area, central Idaho, 2012–14: U.S. Geological Survey Scientific Investigations Report 2015–5166, 47 p., https://dx.doi.org/10.3133/sir20155166.","productDescription":"Report: vii, 47 p.; Appendix B","numberOfPages":"59","onlineOnly":"Y","additionalOnlineFiles":"Y","temporalStart":"2011-10-01","temporalEnd":"2014-09-30","ipdsId":"IP-060615","costCenters":[{"id":343,"text":"Idaho Water Science Center","active":true,"usgs":true}],"links":[{"id":311962,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/sir/2015/5166/coverthb.jpg"},{"id":311964,"rank":3,"type":{"id":3,"text":"Appendix"},"url":"https://pubs.usgs.gov/sir/2015/5166/sir20155166_appendixb.xlsx","text":"Appendix B","size":"40 KB","linkFileType":{"id":3,"text":"xlsx"},"description":"SIR 2015-5166 Appendix B"},{"id":311963,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2015/5166/sir20155166.pdf","text":"Report","size":"4.3 MB","linkFileType":{"id":1,"text":"pdf"},"description":"SIR 2015-5166 PDF"}],"country":"United States","state":"Idaho","otherGeospatial":"Stibnite Mining Area","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {\n        \"stroke\": \"#555555\",\n        \"stroke-width\": 2,\n        \"stroke-opacity\": 1,\n        \"fill\": \"#555555\",\n        \"fill-opacity\": 0.5\n      },\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -115.36502838134766,\n              44.82397775537488\n            ],\n            [\n              -115.36502838134766,\n              44.98034238084973\n            ],\n            [\n              -115.20195007324217,\n              44.98034238084973\n            ],\n            [\n              -115.20195007324217,\n              44.82397775537488\n            ],\n            [\n              -115.36502838134766,\n              44.82397775537488\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","contact":"<p><a href=\"mailto:dc_id@water.usgs.gov\">Director,</a>&nbsp;Idaho Water Science Center<br />U.S. Geological Survey<br />230 Collins Road<br />Boise, Idaho 83702<br /><a href=\"http://id.water.usgs.gov\">http://id.water.usgs.gov</a></p>","tableOfContents":"<ul>\n<li>Abstract</li>\n<li>Introduction</li>\n<li>Description of Study Area</li>\n<li>Study Methods</li>\n<li>Streamflow and Water-Quality Monitoring</li>\n<li>Occurrence, Transport, and Deposition of Selected Constituents</li>\n<li>LOAD ESTimation (LOADEST) Model Results</li>\n<li>Surrogate Regression Modeling of Constituent Concentrations</li>\n<li>Areas of Further Study</li>\n<li>Summary</li>\n<li>Acknowledgments</li>\n<li>References Cited</li>\n<li>Appendix A&ndash;B</li>\n</ul>","publishingServiceCenter":{"id":12,"text":"Tacoma PSC"},"publishedDate":"2015-12-07","noUsgsAuthors":false,"publicationDate":"2015-12-07","publicationStatus":"PW","scienceBaseUri":"5666adbbe4b06a3ea36c8ae6","contributors":{"authors":[{"text":"Etheridge, Alexandra B. 0000-0003-1282-7315 aetherid@usgs.gov","orcid":"https://orcid.org/0000-0003-1282-7315","contributorId":3542,"corporation":false,"usgs":true,"family":"Etheridge","given":"Alexandra","email":"aetherid@usgs.gov","middleInitial":"B.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":343,"text":"Idaho Water Science Center","active":true,"usgs":true}],"preferred":true,"id":579836,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70159758,"text":"ds947 - 2015 - Stream geomorphic and habitat data from a baseline study of Underwood Creek, Wisconsin, 2012","interactions":[],"lastModifiedDate":"2015-12-08T12:44:38","indexId":"ds947","displayToPublicDate":"2015-12-07T11:15:00","publicationYear":"2015","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":310,"text":"Data Series","code":"DS","onlineIssn":"2327-638X","printIssn":"2327-0271","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"947","title":"Stream geomorphic and habitat data from a baseline study of Underwood Creek, Wisconsin, 2012","docAbstract":"<p>Geomorphic and habitat data were collected along Underwood Creek as part of a larger study of stream water quality conditions in the greater Milwaukee, Wisconsin, area. The data were collected to characterize baseline physical conditions in Underwood Creek prior to a potential discharge of wastewater return flow to the stream from the city of Waukesha, Wis. Geomorphic and habitat assessments were conducted in the summer and fall of 2012 by the U.S. Geological Survey (USGS) in cooperation with the Milwaukee Metropolitan Sewerage District. The assessments used a transect based, reach scale assessment at a total of eight reaches&mdash;six reaches along Underwood Creek and two reaches along the Menomonee River upstream and downstream of its confluence with Underwood Creek. The reach scale assessment was an updated version of the USGS National Water Quality Assessment Program habitat assessment integrated with an intensive geomorphic assessment. Channel cross sections and longitudinal profiles were surveyed along each of the eight reaches, and discharge and water temperature were measured. Additionally, a geomorphic river walk-through was completed along a 10 kilometer reach that spanned the individual assessment reaches and the sections of channel between them. The assessments and river walk-through described channel and bank stability, channel shape and size, sediment and riparian conditions along these areas of Underwood Creek and the Menomonee River. Since the time of the data collection, focus has turned to other Lake Michigan tributary watersheds for possible Waukesha return-flow discharges; however, the data collected for this effort remains a valuable asset for the baseline characterization, design, and prioritization of planned stream rehabilitation activities in Underwood Creek. The data files presented in this report include a variety of formats including geographic information system files, spreadsheets, photos, and scans of field forms.</p>\n<p>A subset of habitat-specific data collected during the baseline study can be retrieved through USGS BioData <a href=\"https://aquatic.biodata.usgs.gov/landing.action\">https://aquatic.biodata.usgs.gov/landing.action</a>.</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ds947","collaboration":"Prepared in cooperation with Milwaukee Metropolitan Sewerage District","usgsCitation":"Young, B.M., Fitzpatrick, F.A., and Blount, J.D., 2015, Stream geomorphic and habitat data from a baseline study of Underwood Creek, Wisconsin, 2012: U.S. Geological Survey Data Series 947, 14 p., plus data files, https://dx.doi.org/10.3133/ds947.","productDescription":"Report: v, 14 p.; 3 Tables; Figures; ReadMe; Spatial Data; Photos; Downloads Directory","numberOfPages":"24","onlineOnly":"Y","additionalOnlineFiles":"Y","ipdsId":"IP-053458","costCenters":[{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"links":[{"id":311608,"rank":8,"type":{"id":27,"text":"Table"},"url":"https://pubs.usgs.gov/ds/0947/downloads/ds947_USGS-Underwood-Creek-Site-Surveys-Cross-Sections.xlsx","text":"Underwood Creek Site Survey - Cross Section","size":"239 KB","linkFileType":{"id":3,"text":"xlsx"},"description":"DS 947"},{"id":311606,"rank":6,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/ds/0947/downloads/photos","text":"Photos","description":"DS 947","linkHelpText":"Geomorphic and Habit Assessment Site Photos (108 files, 270 MB), River Walk-Through Photos<br> (307 files, 782 MB), and picasa39-setup.exe (14.6 MB)"},{"id":311612,"rank":12,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/ds/0947/downloads","text":"Downloads","description":"DS 947","linkHelpText":"Directory includes completed field forms, data tables, figures, gis and photo data"},{"id":311610,"rank":10,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/ds/0947/downloads/ds947_USGS-UnderwoodCreekReturnFlowStudy.mpk","text":"USGS Underwood Creek - Return Flow Study (mpk)","size":"252 MB","description":"DS 947"},{"id":311604,"rank":4,"type":{"id":27,"text":"Table"},"url":"https://pubs.usgs.gov/ds/0947/downloads/data-tables/data-tables.zip","text":"Data Tables","size":"192 KB","linkFileType":{"id":6,"text":"zip"},"description":"DS 947","linkHelpText":"USGS Underwood Creek (12 files)"},{"id":311605,"rank":5,"type":{"id":23,"text":"Spatial Data"},"url":"https://pubs.usgs.gov/ds/0947/downloads/gis/gis.zip","text":"Final Geographic Information System Files","size":"193 KB","linkFileType":{"id":6,"text":"zip"},"description":"DS 947","linkHelpText":"(153 Files )"},{"id":311609,"rank":9,"type":{"id":27,"text":"Table"},"url":"https://pubs.usgs.gov/ds/0947/downloads/ds947_USGS-Underwood-Creek-Site-Surveys-Longitudinal-Profiles.xlsx","text":"Underwood Creek Site Survey - Longitudinal Profiles","size":"93.7 KB","linkFileType":{"id":3,"text":"xlsx"},"description":"DS 947"},{"id":311611,"rank":11,"type":{"id":20,"text":"Read Me"},"url":"https://pubs.usgs.gov/ds/0947/downloads/ds947_USGS-UnderwoodCreek-Readme.pdf","text":"Read Me","size":"22.5 MB","linkFileType":{"id":1,"text":"pdf"},"description":"DS 947"},{"id":311601,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/ds/0947/coverthb.jpg"},{"id":311607,"rank":7,"type":{"id":29,"text":"Figure"},"url":"https://pubs.usgs.gov/ds/0947/downloads/figures/figures.zip","text":"Location Map, Hydrograph Comparisons, and Photo Comparison","description":"DS 947","linkHelpText":"<br>Figure 1, Figure 2, and  Figure 3  (2.17 MB)"},{"id":311602,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/ds/0947/ds947.pdf","text":"Report","size":"20.2 MB","linkFileType":{"id":1,"text":"pdf"},"description":"DS 947"},{"id":311603,"rank":3,"type":{"id":2,"text":"Additional Report Piece"},"url":"https://pubs.usgs.gov/ds/0947/downloads/completed-field-forms/completed-field-forms.zip","text":"Completed Field Forms","linkFileType":{"id":6,"text":"zip"},"description":"DS 947","linkHelpText":"(12 files, 198 MB)"}],"country":"United States","state":"Wisconsin","otherGeospatial":"Underwood Creek","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -88.18897247314453,\n              43.01644634906304\n            ],\n            [\n              -88.18897247314453,\n              43.08869845638895\n            ],\n            [\n              -87.99671173095703,\n              43.08869845638895\n            ],\n            [\n              -87.99671173095703,\n              43.01644634906304\n            ],\n            [\n              -88.18897247314453,\n              43.01644634906304\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","contact":"<p>Director, Wisconsin Water Science Center<br /> U.S. Geological Survey <br /> 8505 Research Way<br /> Middleton, Wisconsin 53562-3586<br /> <a href=\"http://wi.water.usgs.gov/\">http://wi.water.usgs.gov/</a></p>","tableOfContents":"<ul>\n<li>Abstract</li>\n<li>Introduction</li>\n<li>Methods for Stream Geomorphic and Habitat Data Collection</li>\n<li>Stream Geomorphology and Habitat Data</li>\n<li>Summary</li>\n<li>Acknowledgments</li>\n<li>References Cited</li>\n</ul>","publishingServiceCenter":{"id":6,"text":"Columbus PSC"},"publishedDate":"2015-12-07","noUsgsAuthors":false,"publicationDate":"2015-12-07","publicationStatus":"PW","scienceBaseUri":"5666adbce4b06a3ea36c8aea","contributors":{"authors":[{"text":"Young, Benjamin M. byoung@usgs.gov","contributorId":5591,"corporation":false,"usgs":true,"family":"Young","given":"Benjamin","email":"byoung@usgs.gov","middleInitial":"M.","affiliations":[{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"preferred":true,"id":580350,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fitzpatrick, Faith A. 0000-0002-9748-7075 fafitzpa@usgs.gov","orcid":"https://orcid.org/0000-0002-9748-7075","contributorId":150001,"corporation":false,"usgs":true,"family":"Fitzpatrick","given":"Faith A.","email":"fafitzpa@usgs.gov","affiliations":[{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"preferred":false,"id":580349,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Blount, James D.","contributorId":150002,"corporation":false,"usgs":true,"family":"Blount","given":"James D.","affiliations":[{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"preferred":false,"id":580351,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70158994,"text":"sir20155147 - 2015 - Characterization of hydrology and water quality of Piceance Creek in the Alkali Flat area, Rio Blanco County, Colorado, March 2012","interactions":[],"lastModifiedDate":"2015-12-07T14:55:23","indexId":"sir20155147","displayToPublicDate":"2015-12-07T11:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2015-5147","title":"Characterization of hydrology and water quality of Piceance Creek in the Alkali Flat area, Rio Blanco County, Colorado, March 2012","docAbstract":"<p>Previous studies by the U.S. Geological Survey identified Alkali Flat as an area of groundwater upwelling, with increases in concentrations of total dissolved solids, and streamflow loss, but additional study was needed to better characterize these observations. The U.S. Geological Survey, in cooperation with the Bureau of Land Management, White River Field Office, conducted a study to characterize the hydrology and water quality of Piceance Creek in the Alkali Flat area of Rio Blanco County, Colorado.</p>\n<p>Water-quality samples were collected at five springs on March 27, 2012, to determine field properties, major ions, trace elements, and stable isotopes of water. Major-ion and trace-element chemistry indicated that the springs sampled as part of this study were likely recharged by the bedrock aquifer. Isotopic values for the springs plotted close to that of groundwater from the Parachute Creek Member of the Green River Formation, and the isotopic values from both of these sources are similar to the values for Grand Mesa snow. Based on fluoride, lithium, and strontium concentrations, one spring appeared to have different source water than the other four springs. The spring also had higher concentrations of calcium, magnesium, and sulfate relative to the other four springs. Trace-element and major-ion data indicate that this spring was sourced from the Uinta Formation. It was likely the other four springs were primarily sourced from the lower part of the Parachute Creek Member of the Green River Formation as indicated by low sulfate concentrations and high fluoride, lithium, and boron concentrations.</p>\n<p>Water-quality samples were collected at 16 surface-water-quality sites on March 14, 2012, to determine field properties, major ions, and trace elements. Sodium was the dominant cation and concentrations increased steadily from upstream to downstream along the study reach. Calcium, magnesium, and potassium concentrations remained relatively stable along the study reach. Strontium concentrations were relatively stable along the study reach, whereas boron and lithium concentrations increased appreciably at site PC22031 and remained elevated to the end of the study reach.</p>\n<p>Loading profiles were used to further refine areas of spring and groundwater input and streamflow gains and losses. Although there was a minor gain in streamflow from sites PC21543 to PC21816 (58 to 59 cubic feet per second (ft<sup>3</sup>/s) during March 2014), the observed increase in dissolved solids load indicated groundwater contribution to Piceance Creek between these two sites. From sites PC22737 to PC22980, dissolved solids load decreased, which was not observed in concentration profiles and indicated that streamflow loss occurred between these two sites. Barium, boron, lithium, and strontium loads showed similar patterns to that of the major ions along the study reach and indicated similar areas of groundwater gain and loss. Boron and lithium load were not observed to decrease in a similar pattern to that of barium and strontium load which would suggest the contribution to the stream from sources with similar chemistry to that of spring sites PCSP2 through PCSP5. Sodium, chloride, and bicarbonate loads increased and decreased along the study reach in a pattern similar to that of dissolved solids load. A chemical mass balance was used to estimate the amount of groundwater and (or) spring water that contributed to the observed changes in water quality along Piceance Creek. This analysis indicated only 5 percent spring water would need to reach Piceance Creek to result in the observed changes in water quality.</p>\n<p>Instantaneous streamflow was measured from sites PC20133 to PC23721 during field reconnaissance (February 2012) and during synoptic sampling (March 2012). During both February and March, the study reach from sites PC20133 to PC23721 was a losing reach with net losses that ranged from 0.5 ft<sup>3</sup>/s (February) to 3 ft<sup>3</sup>/s (March). Observed changes in streamflow along the study reach helped to depict interactions between groundwater and surface water in the Alkali Flat area.</p>\n<p>Water-quality samples were collected at five surface-water sites in December 2010 that were sampled as part of a previous USGS study in 2000. Water-quality data collected during December 2010 showed no appreciable difference from water-quality data collected during December 2000 at the five sites.</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston VA","doi":"10.3133/sir20155147","collaboration":"Prepared in cooperation with the Bureau of Land Management, White River Field Office","usgsCitation":"Thomas, J.C., 2015, Characterization of hydrology and water quality of Piceance Creek in the Alkali Flat area, Rio Blanco County, Colorado, March 2012: U.S. Geological Survey Scientific Investigations Report 2015–5147, 23 p., https://dx.doi.org/10.3133/sir20155147.","productDescription":"iv, 23 p.","onlineOnly":"Y","additionalOnlineFiles":"N","ipdsId":"IP-065008","costCenters":[{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true}],"links":[{"id":311970,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2015/5147/sir20155147.pdf","text":"Report","size":"13.1 MB","linkFileType":{"id":1,"text":"pdf"},"description":"SIR 2015-5147"},{"id":311969,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/sir/2015/5147/coverthb.jpg"}],"country":"United States","state":"Colorado","county":"Rio Blanco County","otherGeospatial":"Alkali Flat Area","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -109,\n              39\n            ],\n            [\n              -109,\n              40.1\n            ],\n            [\n              -107.8,\n              40.1\n            ],\n            [\n              -107.8,\n              39\n            ],\n            [\n              -109,\n              39\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","contact":"<p><a href=\"http://answers.usgs.gov/cgi-bin/gsanswers?pemail=dc_co&amp;subject=Contact+the+Colorado+Water+Science+Center&amp;viewnote=Colorado+Water+Science+Center%3Cbr+/%3EDenver+Federal+Center,+MS-415%3Cbr+/%3EBuilding+53%3Cbr+/%3ELakewood,+CO+80225%3Cbr+/%3E%28303%29+236-4882&amp;note=Generated+by+gsanswers+feedback+form.\">Director</a>, Colorado Water Science Center<br /> U.S. Geological Survey<br /> Box 25046, Mail Stop 415<br /> Denver, CO 80225<br /><a href=\"http://co.water.usgs.gov/\">http://co.water.usgs.gov</a></p>","tableOfContents":"<ul>\n<li>Abstract</li>\n<li>Introduction</li>\n<li>Methods of Data Collection</li>\n<li>Characterization of Surface-Water Hydrology</li>\n<li>Characterization of Surface-Water Quality</li>\n<li>Sources of Recharge to Springs and Spring Contribution to Piceance Creek</li>\n<li>Summary</li>\n<li>References Cited</li>\n</ul>","publishingServiceCenter":{"id":2,"text":"Denver PSC"},"publishedDate":"2015-12-07","noUsgsAuthors":false,"publicationDate":"2015-12-07","publicationStatus":"PW","scienceBaseUri":"5666adafe4b06a3ea36c8ae2","contributors":{"authors":[{"text":"Thomas, Judith C. 0000-0001-7883-1419 juthomas@usgs.gov","orcid":"https://orcid.org/0000-0001-7883-1419","contributorId":1468,"corporation":false,"usgs":true,"family":"Thomas","given":"Judith","email":"juthomas@usgs.gov","middleInitial":"C.","affiliations":[{"id":36532,"text":"Central Midwest Water Science Center","active":true,"usgs":true}],"preferred":true,"id":577180,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70159881,"text":"ofr20151205 - 2015 - Hydrodynamic assessment data associated with the July 2010 line 6B spill into the Kalamazoo River, Michigan, 2012–14","interactions":[],"lastModifiedDate":"2018-01-08T12:32:18","indexId":"ofr20151205","displayToPublicDate":"2015-12-07T09:15:00","publicationYear":"2015","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2015-1205","title":"Hydrodynamic assessment data associated with the July 2010 line 6B spill into the Kalamazoo River, Michigan, 2012–14","docAbstract":"<p>Hydrodynamic-assessment data for the Kalamazoo River were collected by the U.S. Geological Survey (USGS) during 2012&ndash;14 to augment other hydrodynamic data-collection efforts by Enbridge Energy L.P. and the U.S. Environmental Protection Agency associated with the 2010 Enbridge Line 6B oil spill. Specifically, the USGS data-collection efforts were focused on additional background data needed for 2013&ndash;14 updates to Enbridge&rsquo;s 2012 hydrodynamic and sediment-transport models for simulating resuspension and deposition of submerged oil. The main data-collection activities consisted of the following along the Kalamazoo River: (1) a survey done by use of a Real-Time Network Global Navigation Satellite System, (2) water-level measurements in impounded sections, (3) velocity, discharge, and bathymetry measurements at transects and stationary points along the oil-affected reach of the river and in Morrow Delta and Lake, (4) estimates of tributary inflows, and (5) suspended-sediment concentrations and particle-size data at USGS streamgages along the Kalamazoo River. The method used to estimate bed shear stress from stationary velocity data is described. Averaged transect-based velocity data that were processed to match model grids also are included. In addition to model inputs and checks, these hydrodynamic-related data were used in submerged oil containment and recovery operations focused in impoundments and designated sediment traps. This report contains a description of the scope and methods associated with the hydrodynamic data collection and supplementary files of the USGS data that were used in modeling activities.</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20151205","collaboration":"Prepared in cooperation with the U.S. Environmental Protection Agency","usgsCitation":"Reneau, P.C., Soong, D.T., Hoard, C.J., and Fitzpatrick, F.A., 2015, Hydrodynamic-assessment data associated with the July 2010 Line 6B spill into the Kalamazoo River, Michigan, 2012–14: U.S. Geological Survey Open-File Report 2015–1205, 26 p., https://dx.doi.org/10.3133/ofr20151205.","productDescription":"Report: v, 26 p.; 4 Appendixes","numberOfPages":"36","onlineOnly":"Y","additionalOnlineFiles":"Y","ipdsId":"IP-059841","costCenters":[{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"links":[{"id":311838,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2015/1205/ofr20151205.pdf","text":"Report","size":"8.39 MB","linkFileType":{"id":1,"text":"pdf"},"description":"OFR 2015-1205"},{"id":311837,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/2015/1205/coverthb.jpg"},{"id":311868,"rank":7,"type":{"id":3,"text":"Appendix"},"url":"https://pubs.usgs.gov/of/2015/1205/downloads","text":"Report Appendixes - Downloads","size":"772 MB","description":"OFR 2015-1205"},{"id":311843,"rank":5,"type":{"id":3,"text":"Appendix"},"url":"https://pubs.usgs.gov/of/2015/1205/downloads/ofr20151205_appendixc.xlsx","text":"Appendix C - Tributary Inflows Estimates","size":"1.51 MB","linkFileType":{"id":3,"text":"xlsx"},"description":"OFR 2015-1205"},{"id":311842,"rank":4,"type":{"id":3,"text":"Appendix"},"url":"https://pubs.usgs.gov/of/2015/1205/downloads/ofr20151205_appendixb/ofr20151205_appendixb.zip","text":"Appendix B - Velocity, Discharge and Bathymetry Data","size":"225 MB","linkFileType":{"id":6,"text":"zip"},"description":"OFR 2015-1205","linkHelpText":"Downloads include raw and processed <br> data  in a variety of  formats described in text<br> B1 June 2012 data (13.4 MB)<br> B2 August 2012 data (40.0 MB) <br> B3 April 2013 data (463.0 MB)<br> B4 Model confirmation velocities (9.89 MB)"},{"id":311841,"rank":3,"type":{"id":3,"text":"Appendix"},"url":"https://pubs.usgs.gov/of/2015/1205/downloads/ofr20151205_appendixa/ofr20151205_appendixa.xlsx","text":"Appendix A - Water Level Data","size":"17.6 MB","linkFileType":{"id":3,"text":"xlsx"},"description":"OFR 2015-1205","linkHelpText":"2013-911 Kalamazoo 2013 All Stage Recorder Data"},{"id":311844,"rank":6,"type":{"id":3,"text":"Appendix"},"url":"https://pubs.usgs.gov/of/2015/1205/downloads/ofr20151205_appendixd/ofr20151205_appendixd.zip","text":"Appendix D - Suspended-Sediment Data","size":"279 KB","linkFileType":{"id":6,"text":"zip"},"description":"OFR 2015-1205"}],"country":"United States","state":"Michigan","otherGeospatial":"Kalamazoo River","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -85.60409545898438,\n              42.187829010590825\n            ],\n            [\n              -85.60409545898438,\n              42.37680737157286\n            ],\n            [\n              -84.825439453125,\n              42.37680737157286\n            ],\n            [\n              -84.825439453125,\n              42.187829010590825\n            ],\n            [\n              -85.60409545898438,\n              42.187829010590825\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","contact":"<p>Director, Wisconsin Water Science Center<br /> U.S. Geological Survey<br /> 8505 Research Way<br /> Middleton, Wisconsin 53562<br /> <a href=\"http://wi.water.usgs.gov/\">http://wi.water.usgs.gov/</a></p>","tableOfContents":"<ul>\n<li>Abstract</li>\n<li>Introduction</li>\n<li>Reference Points and Vertical Datums</li>\n<li>Water Levels</li>\n<li>Velocity, Discharge, and Bathymetry</li>\n<li>Estimates of Tributary Inflows</li>\n<li>Suspended Sediment</li>\n<li>Summary</li>\n<li>Acknowledgments</li>\n<li>References Cited</li>\n<li>Appendixes</li>\n</ul>","publishingServiceCenter":{"id":6,"text":"Columbus PSC"},"publishedDate":"2015-12-07","noUsgsAuthors":false,"publicationDate":"2015-12-07","publicationStatus":"PW","scienceBaseUri":"5666adb7e4b06a3ea36c8ae4","contributors":{"authors":[{"text":"Reneau, Paul C. 0000-0002-1335-7573 pcreneau@usgs.gov","orcid":"https://orcid.org/0000-0002-1335-7573","contributorId":4385,"corporation":false,"usgs":true,"family":"Reneau","given":"Paul","email":"pcreneau@usgs.gov","middleInitial":"C.","affiliations":[{"id":37947,"text":"Upper Midwest Water Science Center","active":true,"usgs":true}],"preferred":true,"id":580868,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Soong, David T. dsoong@usgs.gov","contributorId":150163,"corporation":false,"usgs":true,"family":"Soong","given":"David T.","email":"dsoong@usgs.gov","affiliations":[{"id":36532,"text":"Central Midwest Water Science Center","active":true,"usgs":true}],"preferred":false,"id":580869,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hoard, Christopher J. 0000-0003-2337-506X cjhoard@usgs.gov","orcid":"https://orcid.org/0000-0003-2337-506X","contributorId":191767,"corporation":false,"usgs":true,"family":"Hoard","given":"Christopher","email":"cjhoard@usgs.gov","middleInitial":"J.","affiliations":[{"id":382,"text":"Michigan Water Science Center","active":true,"usgs":true}],"preferred":false,"id":580870,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fitzpatrick, Faith A. 0000-0002-9748-7075 fafitzpa@usgs.gov","orcid":"https://orcid.org/0000-0002-9748-7075","contributorId":150164,"corporation":false,"usgs":true,"family":"Fitzpatrick","given":"Faith A.","email":"fafitzpa@usgs.gov","affiliations":[{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"preferred":false,"id":580871,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70160381,"text":"70160381 - 2015 - Regional implications of new chronostratigraphic and paleogeographic data from the Early Permian Darwin Basin, east-central California","interactions":[],"lastModifiedDate":"2015-12-21T10:08:15","indexId":"70160381","displayToPublicDate":"2015-12-07T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3481,"text":"Stratigraphy","active":true,"publicationSubtype":{"id":10}},"title":"Regional implications of new chronostratigraphic and paleogeographic data from the Early Permian Darwin Basin, east-central California","docAbstract":"<p>The Darwin Basin developed in response to episodic subsidence of the western margin of the Cordilleran continental shelf from Late Pennsylvanian (Gzhelian) to Early Permian (late Artinskian) time. Subsidence of the basin was initiated in response to continental truncation farther to the west and was later augmented by thrust emplacement of the Last Chance allochthon. This deep-water basin was filled by voluminous fine-grained siliciclastic turbidites and coarse-grained limestone-gravity-flow deposits. Most of this sediment was derived from the Bird Spring carbonate shelf and cratonal platform to the northeast or east, but some came from an offshore tectonic ridge (Conglomerate Mesa Uplift) to the west that formed at the toe of the Last Chance allochthon. At one point in the late Artinskian the influx of extrabasinal sediment was temporarily cut off, resulting in deposition of a unique black limestone that allows precise correlation throughout the basin. Deep-water sedimentation in the Darwin Basin ended by Kungurian time when complex shallow-water to continental sedimentary facies spread across the region. Major expansion of the Darwin Basin occurred soon after the middle Sakmarian emplacement of the Last Chance allochthon. This tectonic event was approximately coeval with deformation in northeastern Nevada that formed the deep-water Dry Mountain Trough. We herein interpret the two basins to have been structurally continuous. Deposition of the unique black limestone is interpreted to mark a eustatic sea level rise that also can be recognized in Lower Permian sections in east-central Nevada and central Arizona.</p>","language":"English","publisher":"Micropaleontology Press Foundation, Inc.","usgsCitation":"Stevens, C., Stone, P., and Magginetti, R.T., 2015, Regional implications of new chronostratigraphic and paleogeographic data from the Early Permian Darwin Basin, east-central California: Stratigraphy, v. 12, p. 149-166.","productDescription":"18 p.","startPage":"149","endPage":"166","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-051976","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":312580,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":312579,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://www.micropress.org/microaccess/stratigraphy/issue-319/article-1944"}],"country":"United States","state":"California","otherGeospatial":"Darwin Basin","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -117.04833984375001,\n              36.85325222344018\n            ],\n            [\n              -118.817138671875,\n              36.74768773190056\n            ],\n            [\n              -118.58642578124999,\n              35.55904339525896\n            ],\n            [\n              -116.79565429687499,\n              35.764343479667176\n            ],\n            [\n              -117.04833984375001,\n              36.85325222344018\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"12","publishingServiceCenter":{"id":14,"text":"Menlo Park PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"567930d1e4b0da412f4fb58a","contributors":{"authors":[{"text":"Stevens, Calvin H.","contributorId":59848,"corporation":false,"usgs":true,"family":"Stevens","given":"Calvin H.","affiliations":[],"preferred":false,"id":582772,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stone, Paul 0000-0002-1439-0156 pastone@usgs.gov","orcid":"https://orcid.org/0000-0002-1439-0156","contributorId":273,"corporation":false,"usgs":true,"family":"Stone","given":"Paul","email":"pastone@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":582771,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Magginetti, Robert T.","contributorId":8532,"corporation":false,"usgs":true,"family":"Magginetti","given":"Robert","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":582773,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70160382,"text":"70160382 - 2015 - Stratigraphy and paleogeographic significance of a Late Pennsylvanian to Early Permian channeled slope sequence in the Darwin Basin, southern Darwin Hills, east-central California","interactions":[],"lastModifiedDate":"2015-12-21T11:14:29","indexId":"70160382","displayToPublicDate":"2015-12-07T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3481,"text":"Stratigraphy","active":true,"publicationSubtype":{"id":10}},"title":"Stratigraphy and paleogeographic significance of a Late Pennsylvanian to Early Permian channeled slope sequence in the Darwin Basin, southern Darwin Hills, east-central California","docAbstract":"<p>The complex stratigraphy of late Paleozoic rocks in the southern Darwin Hills consists of regionally extensive Mississippian and Early to Middle Pennsylvanian rocks overlain by latest Pennsylvanian to Early Permian rocks, herein called the Darwin Hills sequence. Deposition of this latter sequence marked the beginning of the Darwin Basin. In Mississippian time, a carbonate platform prograded westward over slightly older slope deposits. In the Late Mississippian this platform was exposed to erosion and siliciclastic sediments were deposited. In Early to Middle Pennsylvanian time the area subsided, forming a west-facing ramp that was subjected to deformation and erosion in Middle or early Late Pennsylvanian time. Later this area was tilted westward and deep-water sediments were deposited on this slope. In latest Pennsylvanian to earliest Permian time, a major channel was cut through the older Pennsylvanian rocks and into the Upper Mississippian strata. This channel was gradually filled with increasingly finer grained, deep-water sediment as the area evolved into a basin floor by Early Permian (Sakmarian) time. Expansion of the Darwin Basin in Artinskian time led to a second phase of deposition represented by strata of the regionally extensive Darwin Canyon Formation. The geology in this small area thus documents tectonic events occurring during the early development of the Darwin Basin.</p>","language":"English","publisher":"Micropaleontology Press","collaboration":"San Jose State University","usgsCitation":"Stevens, C., Stone, P., Magginetti, R.T., and Ritter, S.M., 2015, Stratigraphy and paleogeographic significance of a Late Pennsylvanian to Early Permian channeled slope sequence in the Darwin Basin, southern Darwin Hills, east-central California: Stratigraphy, v. 12, no. 2, p. 185-196.","productDescription":"12 p.","startPage":"185","endPage":"196","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-069648","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":312604,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":312601,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://www.micropress.org/microaccess/stratigraphy/issue-319/article-1946","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"California","otherGeospatial":"Argus Range, Death Valley, Inyo Mountains","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -118.5,\n              35.5\n            ],\n            [\n              -118.5,\n              37.5\n            ],\n            [\n              -116.5,\n              37.5\n            ],\n            [\n              -116.5,\n              35.5\n            ],\n            [\n              -118.5,\n              35.5\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"12","issue":"2","publishingServiceCenter":{"id":14,"text":"Menlo Park PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"567930d4e4b0da412f4fb5a0","contributors":{"authors":[{"text":"Stevens, Calvin H.","contributorId":59848,"corporation":false,"usgs":true,"family":"Stevens","given":"Calvin H.","affiliations":[],"preferred":false,"id":582775,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stone, Paul 0000-0002-1439-0156 pastone@usgs.gov","orcid":"https://orcid.org/0000-0002-1439-0156","contributorId":273,"corporation":false,"usgs":true,"family":"Stone","given":"Paul","email":"pastone@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":582774,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Magginetti, Robert T.","contributorId":8532,"corporation":false,"usgs":true,"family":"Magginetti","given":"Robert","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":582776,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ritter, Scott M.","contributorId":150726,"corporation":false,"usgs":false,"family":"Ritter","given":"Scott","email":"","middleInitial":"M.","affiliations":[{"id":6681,"text":"Brigham Young University","active":true,"usgs":false}],"preferred":false,"id":582777,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70191891,"text":"70191891 - 2015 - Underwater videography outperforms above-water videography and in-person surveys for monitoring the spawning of Devils Hole Pupfish","interactions":[],"lastModifiedDate":"2017-10-18T16:30:19","indexId":"70191891","displayToPublicDate":"2015-12-04T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2886,"text":"North American Journal of Fisheries Management","active":true,"publicationSubtype":{"id":10}},"title":"Underwater videography outperforms above-water videography and in-person surveys for monitoring the spawning of Devils Hole Pupfish","docAbstract":"<p><span>The monitoring of threatened and endangered fishes in remote environments continues to challenge fisheries biologists. The endangered Devils Hole Pupfish&nbsp;</span><i>Cyprinodon diabolis</i><span>, which is confined to a single warm spring in Death Valley National Park, California–Nevada, has recently experienced record declines, spurring renewed conservation and recovery efforts. In February–December 2010, we investigated the timing and frequency of spawning in the species' native habitat by using three survey methods: underwater videography, above-water videography, and in-person surveys. Videography methods incorporated fixed-position, solar-powered cameras to record continuous footage of a shallow rock shelf that Devils Hole Pupfish use for spawning. In-person surveys were conducted from a platform placed above the water's surface. The underwater camera recorded more overall spawning throughout the year (mean ± SE = 0.35 ± 0.06 events/sample) than the above-water camera (0.11 ± 0.03 events/sample). Underwater videography also recorded more peak-season spawning (March: 0.83 ± 0.18 events/sample; April: 2.39 ± 0.47 events/sample) than above-water videography (March: 0.21 ± 0.10 events/sample; April: 0.9 ± 0.32 events/sample). Although the overall number of spawning events per sample did not differ significantly between underwater videography and in-person surveys, underwater videography provided a larger data set with much less variability than data from in-person surveys. Fixed videography was more cost efficient than in-person surveys (\\$1.31 versus \\$605 per collected data-hour), and underwater videography provided more usable data than above-water videography. Furthermore, video data collection was possible even under adverse conditions, such as the extreme temperatures of the region, and could be maintained successfully with few study site visits. Our results suggest that self-contained underwater cameras can be efficient tools for monitoring remote and sensitive aquatic ecosystems.</span></p>","language":"English","publisher":"Informa UK Limited","doi":"10.1080/02755947.2015.1094155","usgsCitation":"Chaudoin, A.L., Feuerbacher, O., Bonar, S.A., and Barrett, P.J., 2015, Underwater videography outperforms above-water videography and in-person surveys for monitoring the spawning of Devils Hole Pupfish: North American Journal of Fisheries Management, v. 35, no. 6, p. 1252-1262, https://doi.org/10.1080/02755947.2015.1094155.","productDescription":"11 p.","startPage":"1252","endPage":"1262","ipdsId":"IP-069027","costCenters":[{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true}],"links":[{"id":346915,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Nevada","otherGeospatial":"Ash Meadows National Wildlife Refuge","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -116.29220902919769,\n              36.42484356033192\n            ],\n            [\n              -116.29077136516571,\n              36.42484356033192\n            ],\n            [\n              -116.29077136516571,\n              36.42601761391104\n            ],\n            [\n              -116.29220902919769,\n              36.42601761391104\n            ],\n            [\n              -116.29220902919769,\n              36.42484356033192\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"35","issue":"6","publishingServiceCenter":{"id":12,"text":"Tacoma PSC"},"noUsgsAuthors":false,"publicationDate":"2015-12-04","publicationStatus":"PW","scienceBaseUri":"59e8683ae4b05fe04cd4d222","contributors":{"authors":[{"text":"Chaudoin, Ambre L.","contributorId":197535,"corporation":false,"usgs":false,"family":"Chaudoin","given":"Ambre","email":"","middleInitial":"L.","affiliations":[{"id":127,"text":"Arizona Cooperative Fish and Wildlife Research Unit","active":false,"usgs":true}],"preferred":false,"id":713691,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Feuerbacher, Olin","contributorId":187760,"corporation":false,"usgs":false,"family":"Feuerbacher","given":"Olin","affiliations":[],"preferred":false,"id":713692,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bonar, Scott A. 0000-0003-3532-4067 sbonar@usgs.gov","orcid":"https://orcid.org/0000-0003-3532-4067","contributorId":3712,"corporation":false,"usgs":true,"family":"Bonar","given":"Scott","email":"sbonar@usgs.gov","middleInitial":"A.","affiliations":[{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true}],"preferred":true,"id":713549,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Barrett, Paul J.","contributorId":187761,"corporation":false,"usgs":false,"family":"Barrett","given":"Paul","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":713693,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70159920,"text":"70159920 - 2015 - Paleoreconstruction of organic carbon inputs to an oxbow lake in the Mississippi River watershed: Effects of dam construction and land use change on regional inputs","interactions":[],"lastModifiedDate":"2015-12-03T15:54:03","indexId":"70159920","displayToPublicDate":"2015-12-03T16:45:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"Paleoreconstruction of organic carbon inputs to an oxbow lake in the Mississippi River watershed: Effects of dam construction and land use change on regional inputs","docAbstract":"<p><span>We use a dated sediment core from Lake Whittington (USA) in the lower Mississippi River to reconstruct linkages in the carbon cycling and fluvial sediment dynamics over the past 80&thinsp;years. Organic carbon (OC) sources were characterized using bulk (&delta;</span><span>13</span><span>C, ramped pyrolysis-oxidation (PyrOx)&nbsp;</span><sup><span>14</span></sup><span>C, &delta;</span><sup><span>15</span></sup><span>N, and TN:OC ratios) and compound-specific (lignin phenols and fatty acids, including &delta;</span><sup><span>13</span></sup><span>C and&nbsp;</span><sup><span>14</span></sup><span>C of the fatty acids) analyses. Damming of the Missouri River in the 1950s, other hydrological modifications to the river, and soil conservation measures resulted in reduced net OC export, in spite of increasing OC concentrations. Decreasing &delta;</span><sup><span>13</span></sup><span>C values coincided with increases in &delta;</span><sup><span>15</span></sup><span>N, TN:OC ratios, long-chain fatty acids, and lignin-phenol concentrations, suggesting increased inputs of soil-derived OC dominated by C</span><span>3</span><span>&nbsp;vegetation, mainly resulting from changes in farming practices and crop distribution. However, ramped PyrOx&nbsp;</span><sup><span>14</span></sup><span>C showed no discernible differences downcore in thermochemical stability, indicating a limited impact on soil OC turnover.</span></p>","language":"English","publisher":"AGU","doi":"10.1002/2015GL065595","usgsCitation":"Bianchi, T.S., Galy, V., Rosenheim, B.E., Shields, M., Cui, X., and Van Metre, P., 2015, Paleoreconstruction of organic carbon inputs to an oxbow lake in the Mississippi River watershed: Effects of dam construction and land use change on regional inputs: Geophysical Research Letters, v. 42, no. 19, p. 7983-7991, https://doi.org/10.1002/2015GL065595.","productDescription":"9 p.","startPage":"7983","endPage":"7991","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-066306","costCenters":[{"id":451,"text":"National Water Quality Assessment Program","active":true,"usgs":true}],"links":[{"id":471580,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1002/2015gl065595","text":"Publisher Index Page"},{"id":311893,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Mississippi","otherGeospatial":"Lake Whittington","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -91.15837097167967,\n              33.65420905128059\n            ],\n            [\n              -91.15837097167967,\n              33.72334023851457\n            ],\n            [\n              -91.02739334106445,\n              33.72334023851457\n            ],\n            [\n              -91.02739334106445,\n              33.65420905128059\n            ],\n            [\n              -91.15837097167967,\n              33.65420905128059\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"42","issue":"19","publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationDate":"2015-10-10","publicationStatus":"PW","scienceBaseUri":"566167b9e4b06a3ea36c5663","contributors":{"authors":[{"text":"Bianchi, Thomas S.","contributorId":150225,"corporation":false,"usgs":false,"family":"Bianchi","given":"Thomas","email":"","middleInitial":"S.","affiliations":[{"id":17943,"text":"Univ of Florida","active":true,"usgs":false}],"preferred":false,"id":581051,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Galy, Valier","contributorId":150226,"corporation":false,"usgs":false,"family":"Galy","given":"Valier","email":"","affiliations":[{"id":6706,"text":"Woods Hole Oceanographic Institution,","active":true,"usgs":false}],"preferred":false,"id":581052,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rosenheim, Brad E.","contributorId":150227,"corporation":false,"usgs":false,"family":"Rosenheim","given":"Brad","email":"","middleInitial":"E.","affiliations":[{"id":12607,"text":"Univ of South florida, School of Geosciences, Tampa FL","active":true,"usgs":false}],"preferred":false,"id":581053,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Shields, Michael","contributorId":150228,"corporation":false,"usgs":false,"family":"Shields","given":"Michael","email":"","affiliations":[{"id":17943,"text":"Univ of Florida","active":true,"usgs":false}],"preferred":false,"id":581054,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Cui, Xingquan","contributorId":150229,"corporation":false,"usgs":false,"family":"Cui","given":"Xingquan","email":"","affiliations":[{"id":17943,"text":"Univ of Florida","active":true,"usgs":false}],"preferred":false,"id":581055,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Van Metre, Peter C. pcvanmet@usgs.gov","contributorId":486,"corporation":false,"usgs":true,"family":"Van Metre","given":"Peter C.","email":"pcvanmet@usgs.gov","affiliations":[{"id":583,"text":"Texas Water Science Center","active":true,"usgs":true}],"preferred":false,"id":581050,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70159909,"text":"70159909 - 2015 - Coral 13C/12C records of vertical seafloor displacement during megathrust earthquakes west of Sumatra","interactions":[],"lastModifiedDate":"2018-10-24T16:48:05","indexId":"70159909","displayToPublicDate":"2015-12-03T15:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1427,"text":"Earth and Planetary Science Letters","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Coral <sup>13</sup>C/<sup>12</sup>C records of vertical seafloor displacement during megathrust earthquakes west of Sumatra","title":"Coral 13C/12C records of vertical seafloor displacement during megathrust earthquakes west of Sumatra","docAbstract":"<p><span>The recent surge of megathrust earthquakes and tsunami disasters has highlighted the need for a comprehensive understanding of earthquake cycles along convergent plate boundaries. Space geodesy has been used to document recent crustal deformation patterns with unprecedented precision, however the production of long paleogeodetic records of vertical seafloor motion is still a major challenge. Here we show that carbon isotope ratios (</span><span id=\"mmlsi1\" class=\"mathmlsrc\"><a class=\"mathImg\" title=\"View the MathML source\" data-mathurl=\"/science?_ob=MathURL&amp;_method=retrieve&amp;_eid=1-s2.0-S0012821X15006287&amp;_mathId=si1.gif&amp;_user=111111111&amp;_pii=S0012821X15006287&amp;_rdoc=1&amp;_issn=0012821X&amp;md5=a895b0af021f862f20cb2e5b3eb01c5b\"><img class=\"imgLazyJSB inlineImage\" title=\"View the MathML source\" src=\"http://ars.els-cdn.com/content/image/1-s2.0-S0012821X15006287-si1.gif\" alt=\"View the MathML source\" width=\"29\" height=\"13\" data-inlimgeid=\"1-s2.0-S0012821X15006287-si1.gif\" data-loaded=\"true\" /></a></span><span>) in the skeletons of massive&nbsp;</span><i>Porites &nbsp;</i><span>&nbsp;corals from west Sumatra record abrupt changes in light exposure resulting from coseismic seafloor displacements. Validation of the method is based on the coral&nbsp;</span><span id=\"mmlsi1\" class=\"mathmlsrc\"><a class=\"mathImg\" title=\"View the MathML source\" data-mathurl=\"/science?_ob=MathURL&amp;_method=retrieve&amp;_eid=1-s2.0-S0012821X15006287&amp;_mathId=si1.gif&amp;_user=111111111&amp;_pii=S0012821X15006287&amp;_rdoc=1&amp;_issn=0012821X&amp;md5=a895b0af021f862f20cb2e5b3eb01c5b\"><img class=\"imgLazyJSB inlineImage\" title=\"View the MathML source\" src=\"http://ars.els-cdn.com/content/image/1-s2.0-S0012821X15006287-si1.gif\" alt=\"View the MathML source\" width=\"29\" height=\"13\" data-inlimgeid=\"1-s2.0-S0012821X15006287-si1.gif\" data-loaded=\"true\" /></a></span><span>&nbsp;response to uplift (and subsidence) produced by the March 2005&nbsp;</span><span id=\"mmlsi2\" class=\"mathmlsrc\"><span class=\"formulatext stixSupport mathImg\" title=\"Click to view the MathML source\" data-mathurl=\"/science?_ob=MathURL&amp;_method=retrieve&amp;_eid=1-s2.0-S0012821X15006287&amp;_mathId=si2.gif&amp;_user=111111111&amp;_pii=S0012821X15006287&amp;_rdoc=1&amp;_issn=0012821X&amp;md5=0b65fcc7c138727c831ce277435865be\">M<sub>w</sub></span></span><span>&nbsp;8.6 Nias&ndash;Simeulue earthquake, and uplift further south around Sipora Island during a&nbsp;</span><span id=\"mmlsi11\" class=\"mathmlsrc\"><span class=\"formulatext stixSupport mathImg\" title=\"Click to view the MathML source\" data-mathurl=\"/science?_ob=MathURL&amp;_method=retrieve&amp;_eid=1-s2.0-S0012821X15006287&amp;_mathId=si11.gif&amp;_user=111111111&amp;_pii=S0012821X15006287&amp;_rdoc=1&amp;_issn=0012821X&amp;md5=22e405fc108333bc9fcc3cdaecbe9e19\">M&sim;8.4</span></span><span>&nbsp;megathrust earthquake in February 1797. At Nias, the average step-change in coral&nbsp;</span><span id=\"mmlsi1\" class=\"mathmlsrc\"><a class=\"mathImg\" title=\"View the MathML source\" data-mathurl=\"/science?_ob=MathURL&amp;_method=retrieve&amp;_eid=1-s2.0-S0012821X15006287&amp;_mathId=si1.gif&amp;_user=111111111&amp;_pii=S0012821X15006287&amp;_rdoc=1&amp;_issn=0012821X&amp;md5=a895b0af021f862f20cb2e5b3eb01c5b\"><img class=\"imgLazyJSB inlineImage\" title=\"View the MathML source\" src=\"http://ars.els-cdn.com/content/image/1-s2.0-S0012821X15006287-si1.gif\" alt=\"View the MathML source\" width=\"29\" height=\"13\" data-inlimgeid=\"1-s2.0-S0012821X15006287-si1.gif\" data-loaded=\"true\" /></a></span><span>&nbsp;was&nbsp;</span><span id=\"mmlsi34\" class=\"mathmlsrc\"><span class=\"formulatext stixSupport mathImg\" title=\"Click to view the MathML source\" data-mathurl=\"/science?_ob=MathURL&amp;_method=retrieve&amp;_eid=1-s2.0-S0012821X15006287&amp;_mathId=si34.gif&amp;_user=111111111&amp;_pii=S0012821X15006287&amp;_rdoc=1&amp;_issn=0012821X&amp;md5=5a526a4e54bb7fa2cadff965757fab6f\">0.6&plusmn;0.1&permil;/m</span></span><span>&nbsp;for coseismic displacements of +1.8 m and &minus;0.4 m in 2005. At Sipora, a distinct change in&nbsp;</span><i>Porites &nbsp;</i><span>microatoll growth morphology marks coseismic uplift of 0.7 m in 1797. In this shallow water setting, with a steep light attenuation gradient, the step-change in microatoll&nbsp;</span><span id=\"mmlsi1\" class=\"mathmlsrc\"><a class=\"mathImg\" title=\"View the MathML source\" data-mathurl=\"/science?_ob=MathURL&amp;_method=retrieve&amp;_eid=1-s2.0-S0012821X15006287&amp;_mathId=si1.gif&amp;_user=111111111&amp;_pii=S0012821X15006287&amp;_rdoc=1&amp;_issn=0012821X&amp;md5=a895b0af021f862f20cb2e5b3eb01c5b\"><img class=\"imgLazyJSB inlineImage\" title=\"View the MathML source\" src=\"http://ars.els-cdn.com/content/image/1-s2.0-S0012821X15006287-si1.gif\" alt=\"View the MathML source\" width=\"29\" height=\"13\" data-inlimgeid=\"1-s2.0-S0012821X15006287-si1.gif\" data-loaded=\"true\" /></a></span><span>&nbsp;is</span><span id=\"mmlsi36\" class=\"mathmlsrc\"><span class=\"formulatext stixSupport mathImg\" title=\"Click to view the MathML source\" data-mathurl=\"/science?_ob=MathURL&amp;_method=retrieve&amp;_eid=1-s2.0-S0012821X15006287&amp;_mathId=si36.gif&amp;_user=111111111&amp;_pii=S0012821X15006287&amp;_rdoc=1&amp;_issn=0012821X&amp;md5=9b8788cdb3071d2b4bb9eb36440b1c01\">2.3&permil;/m</span></span><span>, nearly four times greater than for the Nias&nbsp;</span><i>Porites &nbsp;</i><span>. Considering the natural variability in coral skeletal&nbsp;</span><span id=\"mmlsi1\" class=\"mathmlsrc\"><a class=\"mathImg\" title=\"View the MathML source\" data-mathurl=\"/science?_ob=MathURL&amp;_method=retrieve&amp;_eid=1-s2.0-S0012821X15006287&amp;_mathId=si1.gif&amp;_user=111111111&amp;_pii=S0012821X15006287&amp;_rdoc=1&amp;_issn=0012821X&amp;md5=a895b0af021f862f20cb2e5b3eb01c5b\"><img class=\"imgLazyJSB inlineImage\" title=\"View the MathML source\" src=\"http://ars.els-cdn.com/content/image/1-s2.0-S0012821X15006287-si1.gif\" alt=\"View the MathML source\" width=\"29\" height=\"13\" data-inlimgeid=\"1-s2.0-S0012821X15006287-si1.gif\" data-loaded=\"true\" /></a></span><span>, we show that the lower detection limit of the method is around 0.2 m of vertical seafloor motion. Analysis of vertical displacement for well-documented earthquakes suggests this sensitivity equates to shallow events exceeding</span><span id=\"mmlsi40\" class=\"mathmlsrc\"><span class=\"formulatext stixSupport mathImg\" title=\"Click to view the MathML source\" data-mathurl=\"/science?_ob=MathURL&amp;_method=retrieve&amp;_eid=1-s2.0-S0012821X15006287&amp;_mathId=si40.gif&amp;_user=111111111&amp;_pii=S0012821X15006287&amp;_rdoc=1&amp;_issn=0012821X&amp;md5=5f37e1c74f9fc1b89d8b319f7873f8db\">M<sub>w</sub>&sim;7.2</span></span><span>&nbsp;in central megathrust and back-arc thrust fault settings. Our findings indicate that the coral&nbsp;</span><span id=\"mmlsi8\" class=\"mathmlsrc\"><a class=\"mathImg\" title=\"View the MathML source\" data-mathurl=\"/science?_ob=MathURL&amp;_method=retrieve&amp;_eid=1-s2.0-S0012821X15006287&amp;_mathId=si8.gif&amp;_user=111111111&amp;_pii=S0012821X15006287&amp;_rdoc=1&amp;_issn=0012821X&amp;md5=b70e0a030d246b0f45d2bbfbb8223784\"><img class=\"imgLazyJSB inlineImage\" title=\"View the MathML source\" src=\"http://ars.els-cdn.com/content/image/1-s2.0-S0012821X15006287-si8.gif\" alt=\"View the MathML source\" width=\"48\" height=\"16\" data-inlimgeid=\"1-s2.0-S0012821X15006287-si8.gif\" data-loaded=\"true\" /></a></span><span>&nbsp;paleogeodesy technique could be applied to convergent tectonic margins throughout the tropical western Pacific and eastern Indian oceans, which host prolific coral reefs, and some of the world's greatest earthquake catastrophes. While our focus here is the link between coral&nbsp;</span><span id=\"mmlsi1\" class=\"mathmlsrc\"><a class=\"mathImg\" title=\"View the MathML source\" data-mathurl=\"/science?_ob=MathURL&amp;_method=retrieve&amp;_eid=1-s2.0-S0012821X15006287&amp;_mathId=si1.gif&amp;_user=111111111&amp;_pii=S0012821X15006287&amp;_rdoc=1&amp;_issn=0012821X&amp;md5=a895b0af021f862f20cb2e5b3eb01c5b\"><img class=\"imgLazyJSB inlineImage\" title=\"View the MathML source\" src=\"http://ars.els-cdn.com/content/image/1-s2.0-S0012821X15006287-si1.gif\" alt=\"View the MathML source\" width=\"29\" height=\"13\" data-inlimgeid=\"1-s2.0-S0012821X15006287-si1.gif\" data-loaded=\"true\" /></a></span><span>, light exposure and coseismic crustal deformation, the same principles could be used to characterize interseismic strain during earthquake cycles over the last several millennia.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.epsl.2015.10.002","usgsCitation":"Gagan, M.K., Sosdian, S.M., Scott-Gagan, H., Sieh, K., Hantoro, W.S., Natawidjaja, D.H., Briggs, R.W., Suwargadi, B.W., and Rifai, H., 2015, Coral 13C/12C records of vertical seafloor displacement during megathrust earthquakes west of Sumatra: Earth and Planetary Science Letters, v. 432, p. 461-471, https://doi.org/10.1016/j.epsl.2015.10.002.","productDescription":"11 p.","startPage":"461","endPage":"471","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-069679","costCenters":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"links":[{"id":311886,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Indonesia","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              95.4052734375,\n              -4.696879026871413\n            ],\n            [\n              102.0849609375,\n              -4.696879026871413\n            ],\n            [\n              102.0849609375,\n              3.1076061013287033\n            ],\n            [\n              95.4052734375,\n              3.1076061013287033\n            ],\n            [\n              95.4052734375,\n              -4.696879026871413\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"432","publishingServiceCenter":{"id":2,"text":"Denver PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"566167b7e4b06a3ea36c5659","contributors":{"authors":[{"text":"Gagan, Michael K.","contributorId":150200,"corporation":false,"usgs":false,"family":"Gagan","given":"Michael","email":"","middleInitial":"K.","affiliations":[{"id":17939,"text":"The Australian National University","active":true,"usgs":false}],"preferred":false,"id":581095,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sosdian, Sindia M.","contributorId":150201,"corporation":false,"usgs":false,"family":"Sosdian","given":"Sindia","email":"","middleInitial":"M.","affiliations":[{"id":17940,"text":"Cardiff University","active":true,"usgs":false}],"preferred":false,"id":581096,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Scott-Gagan, Heather","contributorId":150202,"corporation":false,"usgs":false,"family":"Scott-Gagan","given":"Heather","email":"","affiliations":[{"id":17939,"text":"The Australian National University","active":true,"usgs":false}],"preferred":false,"id":581097,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sieh, Kerry","contributorId":7280,"corporation":false,"usgs":true,"family":"Sieh","given":"Kerry","affiliations":[],"preferred":false,"id":581098,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hantoro, Wahyoe S.","contributorId":150203,"corporation":false,"usgs":false,"family":"Hantoro","given":"Wahyoe","email":"","middleInitial":"S.","affiliations":[{"id":17941,"text":"Indonesian Institute of Sciences","active":true,"usgs":false}],"preferred":false,"id":581099,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Natawidjaja, Danny H.","contributorId":150204,"corporation":false,"usgs":false,"family":"Natawidjaja","given":"Danny","email":"","middleInitial":"H.","affiliations":[{"id":17941,"text":"Indonesian Institute of Sciences","active":true,"usgs":false}],"preferred":false,"id":581100,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Briggs, Richard W. 0000-0001-8108-0046 rbriggs@usgs.gov","orcid":"https://orcid.org/0000-0001-8108-0046","contributorId":4136,"corporation":false,"usgs":true,"family":"Briggs","given":"Richard","email":"rbriggs@usgs.gov","middleInitial":"W.","affiliations":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"preferred":true,"id":581101,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Suwargadi, Bambang W.","contributorId":150205,"corporation":false,"usgs":false,"family":"Suwargadi","given":"Bambang","email":"","middleInitial":"W.","affiliations":[{"id":17941,"text":"Indonesian Institute of Sciences","active":true,"usgs":false}],"preferred":false,"id":581102,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Rifai, Hamdi","contributorId":150206,"corporation":false,"usgs":false,"family":"Rifai","given":"Hamdi","affiliations":[{"id":17942,"text":"State University of Padang","active":true,"usgs":false}],"preferred":false,"id":581103,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}}
,{"id":70159917,"text":"70159917 - 2015 - Classification of ephemeral, intermittent, and perennial stream reaches using a TOPMODEL-based approach","interactions":[],"lastModifiedDate":"2019-06-03T13:22:56","indexId":"70159917","displayToPublicDate":"2015-12-03T14:30:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2529,"text":"Journal of the American Water Resources Association","active":true,"publicationSubtype":{"id":10}},"title":"Classification of ephemeral, intermittent, and perennial stream reaches using a TOPMODEL-based approach","docAbstract":"<p><span>Whether a waterway is temporary or permanent influences regulatory protection guidelines, however, classification can be subjective due to a combination of factors, including time of year, antecedent moisture conditions, and previous experience of the field investigator. Our objective was to develop a standardized protocol using publicly&nbsp;available spatial information to classify ephemeral, intermittent, and perennial streams. Our hypothesis was that field observations of flow along the stream channel could be compared to results from a hydrologic model, providing an objective method of how these stream reaches can be identified. Flow-state sensors were placed at ephemeral, intermittent, and perennial stream reaches from May to December 2011 in the Appalachian coal basin of eastern Kentucky. This observed flow record was then used to calibrate the simulated saturation deficit in each channel reach based on the topographic wetness index used by TOPMODEL. Saturation deficit values were categorized as flow or no-flow days, and the simulated record of streamflow was compared to the observed record. The hydrologic model was more accurate for simulating flow during the spring and fall seasons. However, the model effectively identified stream reaches as intermittent and perennial in each of the two basins.</span></p>","language":"English","publisher":"Wiley","doi":"10.1111/1752-1688.12352","usgsCitation":"Williamson, T., Agouridis, C.T., Barton, C.D., Villines, J.A., and Lant, J.G., 2015, Classification of ephemeral, intermittent, and perennial stream reaches using a TOPMODEL-based approach: Journal of the American Water Resources Association, v. 51, no. 6, p. 1739-1759, https://doi.org/10.1111/1752-1688.12352.","productDescription":"21 p.","startPage":"1739","endPage":"1759","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-051282","costCenters":[{"id":354,"text":"Kentucky Water Science Center","active":true,"usgs":true}],"links":[{"id":311879,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"51","issue":"6","publishingServiceCenter":{"id":6,"text":"Columbus PSC"},"noUsgsAuthors":false,"publicationDate":"2015-09-18","publicationStatus":"PW","scienceBaseUri":"566167b7e4b06a3ea36c5655","contributors":{"authors":[{"text":"Williamson, Tanja N. tnwillia@usgs.gov","contributorId":452,"corporation":false,"usgs":true,"family":"Williamson","given":"Tanja N.","email":"tnwillia@usgs.gov","affiliations":[{"id":354,"text":"Kentucky Water Science Center","active":true,"usgs":true}],"preferred":false,"id":581038,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Agouridis, Carmen T. 0000-0001-9580-6143","orcid":"https://orcid.org/0000-0001-9580-6143","contributorId":150223,"corporation":false,"usgs":false,"family":"Agouridis","given":"Carmen","email":"","middleInitial":"T.","affiliations":[{"id":12425,"text":"University of Kentucky","active":true,"usgs":false}],"preferred":false,"id":581040,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Barton, Christopher D.","contributorId":150222,"corporation":false,"usgs":false,"family":"Barton","given":"Christopher","email":"","middleInitial":"D.","affiliations":[{"id":12425,"text":"University of Kentucky","active":true,"usgs":false}],"preferred":false,"id":581039,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Villines, Jonathan A.","contributorId":150224,"corporation":false,"usgs":false,"family":"Villines","given":"Jonathan","email":"","middleInitial":"A.","affiliations":[{"id":12425,"text":"University of Kentucky","active":true,"usgs":false}],"preferred":false,"id":581041,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Lant, Jeremiah G. 0000-0001-6688-4820 jlant@usgs.gov","orcid":"https://orcid.org/0000-0001-6688-4820","contributorId":4912,"corporation":false,"usgs":true,"family":"Lant","given":"Jeremiah","email":"jlant@usgs.gov","middleInitial":"G.","affiliations":[{"id":354,"text":"Kentucky Water Science Center","active":true,"usgs":true},{"id":27231,"text":"Indiana-Kentucky Water Science Center","active":true,"usgs":true}],"preferred":true,"id":581042,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70159003,"text":"sir20155151 - 2015 - Regression Equations for Monthly and Annual Mean and Selected Percentile Streamflows for Ungaged Rivers in Maine","interactions":[],"lastModifiedDate":"2015-12-31T10:46:01","indexId":"sir20155151","displayToPublicDate":"2015-12-03T12:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2015-5151","title":"Regression Equations for Monthly and Annual Mean and Selected Percentile Streamflows for Ungaged Rivers in Maine","docAbstract":"<p>In an effort to delineate hydrologic conditions in Maine, the U.S. Geological Survey, in cooperation with the Maine Department of Transportation, used streamflow data to develop dependent variables for 130 regression equations for estimating monthly and annual mean and 1, 5, 10, 25, 50, 75, 90, 95, and 99 percentile streamflows for ungaged, unregulated rivers in Maine. Daily streamflow data from 24 rural unregulated basins with drainage areas between 14.9 and 1,419 square miles in Maine and northern New Hampshire were used in the derivation of the equations. Streamflow data collected from October 1, 1982, through September 30, 2012, were used to derive the dependent variables for this study to represent current [2015] hydrologic conditions in Maine and northern New Hampshire. Weighted least squares regression techniques were used to derive the final coefficients and measures of uncertainty for the regression equations. Eight basin characteristics serve as the explanatory variables: drainage area, distance from the coast, mean and maximum basin elevation, mean basin slope, mean basin percentage of hydrologic soil group A, fraction of sand and gravel aquifers, and percentage of open water.</p>\n<p>The largest average errors of prediction are associated with regression equations for the lowest streamflows derived for months during which the lowest streamflows of the year occur (such as the 5 and 1 monthly percentiles for August and September). The regression equations have been derived on the basis of streamflow and basin characteristics data for unregulated, rural drainage basins without substantial streamflow or drainage modifications (for example, diversions and (or) regulation by dams or reservoirs, tile drainage, irrigation, channelization, and impervious paved surfaces), therefore using the equations for regulated or urbanized basins with substantial streamflow or drainage modifications will yield results of unknown error. Input basin characteristics derived using techniques or datasets other than those documented in this report or using values outside the ranges used to develop these regression equations also will yield results of unknown error.</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20155151","collaboration":"Prepared in cooperation with the Maine Department of Transportation","usgsCitation":"Dudley, R.W., 2015, Regression equations for monthly and annual mean and selected percentile streamflows for ungaged rivers in Maine (ver. 1.1, December 21, 2015): U.S. Geological Survey Scientific Investigations Report 2015–5151, 35 p., https://dx.doi.org/10.3133/sir20155151.","productDescription":"viii, 35 p.","numberOfPages":"48","onlineOnly":"Y","additionalOnlineFiles":"N","ipdsId":"IP-066284","costCenters":[{"id":371,"text":"Maine Water Science 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 \"}}]}","edition":"Version 1: Originally posted December 3, 2015; Version 1.1: December 21, 2015","contact":"<p><a href=\"dc_nweng@usgs.gov\">Director</a>, New England Water Science Center<br /> U.S. Geological Survey<br /> 196 Whitten Road<br /> Augusta, ME 04330</p>\n<p>Or visit our Web site at:<br /> <a href=\"http://newengland.water.usgs.gov\">http://newengland.water.usgs.gov</a></p>","tableOfContents":"<ul>\n<li>Acknowledgments</li>\n<li>Abstract</li>\n<li>Introduction</li>\n<li>Data Used For This Study</li>\n<li>Regression Analyses</li>\n<li>Regression Equations</li>\n<li>Summary</li>\n<li>References Cited</li>\n<li>Appendix 1</li>\n</ul>","publishingServiceCenter":{"id":11,"text":"Pembroke PSC"},"publishedDate":"2015-12-03","revisedDate":"2015-12-21","noUsgsAuthors":false,"publicationDate":"2015-12-03","publicationStatus":"PW","scienceBaseUri":"566167b9e4b06a3ea36c5665","contributors":{"authors":[{"text":"Dudley, Robert W. 0000-0002-0934-0568 rwdudley@usgs.gov","orcid":"https://orcid.org/0000-0002-0934-0568","contributorId":2223,"corporation":false,"usgs":true,"family":"Dudley","given":"Robert","email":"rwdudley@usgs.gov","middleInitial":"W.","affiliations":[{"id":371,"text":"Maine Water Science Center","active":true,"usgs":true},{"id":466,"text":"New England Water Science Center","active":true,"usgs":true}],"preferred":true,"id":577237,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70159903,"text":"70159903 - 2015 - Uranium-series ages of fossil corals from Mallorca, Spain: The \"Neotyrrhenian\" high stand of the Mediterranean Sea revisited","interactions":[],"lastModifiedDate":"2018-02-08T12:50:18","indexId":"70159903","displayToPublicDate":"2015-12-03T11:15:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2996,"text":"Palaeogeography, Palaeoclimatology, Palaeoecology","printIssn":"0031-0182","active":true,"publicationSubtype":{"id":10}},"title":"Uranium-series ages of fossil corals from Mallorca, Spain: The \"Neotyrrhenian\" high stand of the Mediterranean Sea revisited","docAbstract":"<p id=\"sp0005\">The emergent marine deposits of the Mediterranean basin have been recognized as an important record of Quaternary sea level history for more than a century. Previous workers identified what have been interpreted to be two separate high stands of sea in the late Quaternary, namely the &ldquo;Eutyrrhenian&rdquo; (thought to be ~&nbsp;120&nbsp;ka) and the &ldquo;Neotyrrhenian&rdquo; (thought to be either ~&nbsp;100&nbsp;ka or ~&nbsp;80&nbsp;ka). On Mallorca, Spain, both of these named deposits lie close to present sea level, implying paleo-sea levels slightly above present during both marine isotope stages (MIS) 5.5/5e and either 5.3/5c or 5.1/5a. If these interpretations are correct, they conflict, at least in part, with sea level records from far-field localities.</p>\n<p id=\"sp0010\">We analyzed corals from the Neotyrrhenian beds on Mallorca, which gave U-series ages from ~&nbsp;126&nbsp;ka to ~&nbsp;118&nbsp;ka. These ages are consistent with previously published amino acid data that show that the Neotyrrhenian and Eutyrrhenian deposits are not significantly different in age. A fossil molluscan fauna from the Neotyrrhenian deposits on Mallorca has a warm-water paleozoogeographic aspect, with nine southward-ranging species and four extralimital southern species. When compared with sea surface temperatures obtained from planktonic foraminifera and alkenones from ODP core 977 in the nearby Alboran Sea, the only time period that shows comparable warmth is MIS 5.5/5e, consistent with the U-series ages of corals from the Neotyrrhenian deposits. We propose that the Neotyrrhenian deposits are a beachrock facies of the same age as the Eutyrrhenian deposits. This interpretation is consistent with the differences in physical sedimentology of the two deposits, explains the U-series and amino acid data indicating the same age, is consistent with the very slight elevation difference of the Neotyrrhenian and Eutyrrhenian beds, and explains the similar, though not identical paleozoogeographic aspects of their fossil faunas.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.palaeo.2015.06.043","usgsCitation":"Muhs, D., Simmons, K., and Porat, N., 2015, Uranium-series ages of fossil corals from Mallorca, Spain: The \"Neotyrrhenian\" high stand of the Mediterranean Sea revisited: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 438, p. 408-424, https://doi.org/10.1016/j.palaeo.2015.06.043.","productDescription":"17 p.","startPage":"408","endPage":"424","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-061716","costCenters":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"links":[{"id":471581,"rank":0,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://hdl.handle.net/10553/17947","text":"External Repository"},{"id":311854,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Spain","state":"Mallorca","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              2.142333984375,\n              39.14710270770074\n            ],\n            [\n              2.142333984375,\n              40.111688665595956\n            ],\n            [\n              3.515625,\n              40.111688665595956\n            ],\n            [\n              3.515625,\n              39.14710270770074\n            ],\n            [\n              2.142333984375,\n              39.14710270770074\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"438","publishingServiceCenter":{"id":2,"text":"Denver PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"566167bae4b06a3ea36c5669","contributors":{"authors":[{"text":"Muhs, Daniel R. dmuhs@usgs.gov","contributorId":140959,"corporation":false,"usgs":true,"family":"Muhs","given":"Daniel R.","email":"dmuhs@usgs.gov","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":false,"id":580965,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Simmons, Kathleen R. ksimmons@usgs.gov","contributorId":140955,"corporation":false,"usgs":true,"family":"Simmons","given":"Kathleen R.","email":"ksimmons@usgs.gov","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":false,"id":580973,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Porat, Naomi","contributorId":13886,"corporation":false,"usgs":true,"family":"Porat","given":"Naomi","affiliations":[],"preferred":false,"id":580974,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70159537,"text":"ofr20151211 - 2015 - California State Waters Map Series — Offshore of Fort Ross, California","interactions":[],"lastModifiedDate":"2022-04-18T21:34:02.125304","indexId":"ofr20151211","displayToPublicDate":"2015-12-03T08:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2015-1211","title":"California State Waters Map Series — Offshore of Fort Ross, California","docAbstract":"<h1>Introduction</h1>\n<p>In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within the 3-nautical-mile limit of California&rsquo;s State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration, interpretation, and visualization of swath sonar data, acoustic backscatter, seafloor video, seafloor photography, high-resolution seismic-reflection profiles, and bottom-sediment sampling data. The map products display seafloor morphology and character, identify potential marine benthic habitats, and illustrate both the surficial seafloor geology and shallow subsurface geology.</p>\n<p>The Offshore of Fort Ross map area is located in northern California, on the Pacific coast of Sonoma County, about 90 km north of San Francisco and 60 km south of Point Arena. The onshore part of the map area is largely undeveloped, used primarily for grazing and recreation; the small town of Jenner (population, 136), located at the mouth of the Russian River, is the largest cultural center. The coast and shoreline are rugged and scenic, characterized by rocky promontories, kelp-rich coves, and nearshore rocks and sea stacks. U.S. Highway 1 extends along the coast through the map area, crossing the Russian River and passing through Sonoma Coast State Park and Fort Ross State Historic Park.</p>\n<p>The Offshore of Fort Ross map area is cut by the northwest-striking San Andreas Fault, the right-lateral transform boundary between the North American and Pacific plates. The fault intersects the shoreline a few kilometers south of Fort Ross at Timber Gulch, and it juxtaposes Jurassic, Cretaceous, Paleocene, and Eocene rocks of the Franciscan Complex to the northeast and Tertiary sedimentary rocks to the southwest. In this area, the San Andreas Fault has an estimated slip rate of 17 to 24 mm/yr. The devastating great 1906 California earthquake (M7.8) is thought to have nucleated on the San Andreas Fault offshore of San Francisco, about 90 km to the south, with the rupture extending northward through the Offshore of Fort Ross map area to the south flank of Cape Mendocino. Approximately 3.6 m of lateral offset occurred at Timber Gulch during this event.</p>\n<p>The San Andreas Fault has an important influence on coastal geomorphology. The coastline in the northern part of the map area, southwest of the onshore San Andreas Fault, is characterized by steep shoreline bluffs and as many as four uplifted, relatively flat marine terraces that range in elevation from about 15 to 100 m. Northeast of the San Andreas Fault, about 12 km of coastline is marked by steep, landslide-prone cliffs that commonly are 200 to 300 m high.</p>\n<p>The mouth of the Russian River and its estuary cut through the steep coastal topography in the southern part of the Offshore of Fort Ross map area. The Russian River drains a large watershed (3,470 km<sup>2</sup>), and it has an annual discharge of about 2 km<sup>3</sup> (1,600,000 acre-feet) and an annual sediment load of about 900,000 metric tons. The map area is part of the Russian River littoral cell, in which the predominant longshore drift is to the south. Small pocket beaches are most common along the shoreline, but longer linear beaches are present near the mouth of the Russian River.</p>\n<p>The seafloor in the north half of the map area is characterized by rocky outcrops of Tertiary sedimentary rocks. The rugged nearshore zone and the inner shelf area (to water depths of about 50 m) typically slopes gently seaward, whereas the smooth midshelf area within California&rsquo;s State Waters (about 50 to 85 m deep) is relatively flat. In contrast, the nearshore to midshelf area in the south half of the map area, which lies directly offshore of the mouth of the Russian River, has a more uniform, relatively flat slope. Shallow-marine and shelf sediments were deposited in the last about 21,000 years during the sea-level rise that followed the Last Glacial Maximum (LGM). Sea level was about 125 m lower than present during the LGM, at which time the entire Offshore of Fort Ross map area was emergent and the shoreline was about 20 km west of its present location.</p>\n<p>Circulation over the continental shelf in the map area (and in the broader northern California region) is dominated by the southward-flowing California Current, the eastern limb of the North Pacific Gyre. Associated upwelling brings cool, nutrient-rich waters to the surface, resulting in high biological productivity. The current flow generally is southeastward during the spring and summer; however, during the fall and winter, the otherwise persistent northwest winds are sometimes weak or absent, causing the California Current to move farther offshore and the Davidson Current, a weaker, northward-flowing countercurrent, to become active.</p>\n<p>Throughout the year, this part of the northern California coast is exposed to four wave climate regimes: the north Pacific swell, the southern swell, northwest wind waves, and local wind waves. The north Pacific swell dominates in winter months (typically November through March). During summer months, the largest waves come from the southern swell, generated by storms in the south Pacific and offshore of Central America. Northwest wind waves affect the coast throughout the year, whereas local wind waves are most common from October to April.</p>\n<p>Potential marine benthic habitat types in the Offshore of Fort Ross map area include unconsolidated continental-shelf sediments, mixed continental-shelf substrate, and hard continental-shelf substrate. Rocky shelf outcrops and rubble are considered the primary habitat type for rockfish and lingcod, both of which are recreationally and commercially important species.</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20151211","usgsCitation":"Johnson, S.Y., Dartnell, P., Golden, N.E., Hartwell, S.R., Erdey, M.D., Greene, H.G., Cochrane, G.R., Kvitek, R.G., Manson, M.W., Endris, C.A., Dieter, B.E., Watt, J.T., Krigsman, L.M., Sliter, R.W., Lowe, E.N., and Chin, J.L. (S.Y. Johnson and S.A. Cochran, eds.), 2015, California State Waters Map Series — Offshore of Fort Ross, California: U.S. Geological Survey Open-File Report 2015–1211, pamphlet 37 p., 10 sheets, scale 1:24,000, https://dx.doi.org/10.3133/ofr20151211.","productDescription":"Pamphlet: iv, 37 p.; 10 Sheets: 47.0 x 36.0 inches or smaller; Data Catalog; Metadata","numberOfPages":"41","onlineOnly":"Y","additionalOnlineFiles":"Y","ipdsId":"IP-056321","costCenters":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":399011,"rank":21,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_103728.htm"},{"id":311811,"rank":11,"type":{"id":26,"text":"Sheet"},"url":"https://pubs.usgs.gov/of/2015/1211/ofr20151211_sheet9.pdf","text":"Sheet 9","linkFileType":{"id":1,"text":"pdf"},"description":"OFR 2015-1211 Sheet 9 PDF","linkHelpText":"Local (Offshore of Fort Ross Map Area) and Regional (Offshore from Salt Point to Drakes Bay) Shallow-Subsurface Geology and Structure, California By Samuel Y. Johnson, Stephen R. Hartwell, Janet T. Watt, and Ray W. Sliter"},{"id":311810,"rank":10,"type":{"id":26,"text":"Sheet"},"url":"https://pubs.usgs.gov/of/2015/1211/ofr20151211_sheet8.pdf","text":"Sheet 8","linkFileType":{"id":1,"text":"pdf"},"description":"OFR 2015-1211 Sheet 8 PDF","linkHelpText":"Seismic-Reflection Profiles, Offshore of Fort Ross Map Area, California by Samuel Y. Johnson, Ray W. Sliter, Stephen R. Hartwell, and John L. Chin"},{"id":311809,"rank":9,"type":{"id":26,"text":"Sheet"},"url":"https://pubs.usgs.gov/of/2015/1211/ofr20151211_sheet7.pdf","text":"Sheet 7","linkFileType":{"id":1,"text":"pdf"},"description":"OFR 2015-1211 Sheet 7 PDF","linkHelpText":"Potential Marine Benthic Habitats, Offshore of Fort Ross Map Area, California By Bryan E. Dieter, H. Gary Greene, Charles A. Endris, Mercedes D. Erdey, and Erik N. Lowe"},{"id":311819,"rank":17,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/of/2015/1088/","text":"Open-File Report 2015–1088","linkHelpText":"<em>California State Waters Map Series—Offshore of Tomales Point, California</em>, by Samuel Y. Johnson and others."},{"id":311818,"rank":16,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/of/2015/1041/","text":"Open-File Report 2015–1041","linkHelpText":"<em>California State Waters Map Series—Drakes Bay and Vicinity, California</em>, by Janet T. Watt and others."},{"id":311817,"rank":15,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/ds/781/","text":"Data Series 781","linkHelpText":"California State Waters Map Series Data Catalog"},{"id":311816,"rank":14,"type":{"id":16,"text":"Metadata"},"url":"https://pubs.usgs.gov/of/2015/1211/ofr20151211_metadata.html","linkFileType":{"id":5,"text":"html"}},{"id":311815,"rank":13,"type":{"id":28,"text":"Dataset"},"url":"https://pubs.usgs.gov/ds/781/OffshoreFortRoss/data_catalog_OffshoreFortRoss.html","text":"Data Catalog","linkFileType":{"id":5,"text":"html"},"linkHelpText":"The GIS data layers for this map are accessible from “Data Catalog—Offshore Fort Ross, California,” which is part of California State Waters Map Series Data Catalog. Each GIS data file is listed with a brief description, a small image, and links to the metadata files and the downloadable data files."},{"id":311812,"rank":12,"type":{"id":26,"text":"Sheet"},"url":"https://pubs.usgs.gov/of/2015/1211/ofr20151211_sheet10.pdf","text":"Sheet 10","linkFileType":{"id":1,"text":"pdf"},"description":"OFR 2015-1211 Sheet 10 PDF","linkHelpText":"Offshore and Onshore Geology and Geomorphology, Offshore of Fort Ross Map Area, California By Samuel Y. Johnson, Stephen R. Hartwell, and Michael W. Manson"},{"id":311808,"rank":8,"type":{"id":26,"text":"Sheet"},"url":"https://pubs.usgs.gov/of/2015/1211/ofr20151211_sheet6.pdf","text":"Sheet 6","linkFileType":{"id":1,"text":"pdf"},"description":"OFR 2015-1211 Sheet 6 PDF","linkHelpText":"Ground-Truth Studies, Offshore of Fort Ross Map Area, California By Nadine E. Golden, Guy R. Cochrane, and Lisa M. Krigsman"},{"id":311807,"rank":7,"type":{"id":26,"text":"Sheet"},"url":"https://pubs.usgs.gov/of/2015/1211/ofr20151211_sheet5.pdf","text":"Sheet 5","linkFileType":{"id":1,"text":"pdf"},"description":"OFR 2015-1211 Sheet 5 PDF","linkHelpText":"Seafloor Character, Offshore of Fort Ross Map Area, California By Mercedes D. Erdey and Guy R. Cochrane"},{"id":311803,"rank":3,"type":{"id":26,"text":"Sheet"},"url":"https://pubs.usgs.gov/of/2015/1211/ofr20151211_sheet1.pdf","text":"Sheet 1","linkFileType":{"id":1,"text":"pdf"},"description":"OFR 2015-1211 Sheet 1 PDF","linkHelpText":"Colored Shaded-Relief Bathymetry, Offshore of Fort Ross Map Area, California By Peter Dartnell and Rikk G. Kvitek"},{"id":311801,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/2015/1211/coverthb.jpg"},{"id":311802,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2015/1211/ofr20151211_pamphlet.pdf","text":"Pamphlet","linkFileType":{"id":1,"text":"pdf"},"description":"OFR 2015-1211 Pamphlet PDF"},{"id":311806,"rank":6,"type":{"id":26,"text":"Sheet"},"url":"https://pubs.usgs.gov/of/2015/1211/ofr20151211_sheet4.pdf","text":"Sheet 4","linkFileType":{"id":1,"text":"pdf"},"description":"OFR 2015-1211 Sheet 4 PDF","linkHelpText":"Data Integration and Visualization, Offshore of Fort Ross Map Area, California By Peter Dartnell"},{"id":311805,"rank":5,"type":{"id":26,"text":"Sheet"},"url":"https://pubs.usgs.gov/of/2015/1211/ofr20151211_sheet3.pdf","text":"Sheet 3","linkFileType":{"id":1,"text":"pdf"},"description":"OFR 2015-1211 Sheet 3 PDF","linkHelpText":"Acoustic Backscatter, Offshore of Fort Ross Map Area, California By Peter Dartnell, Mercedes D. Erdey, and Rikk G. Kvitek"},{"id":311804,"rank":4,"type":{"id":26,"text":"Sheet"},"url":"https://pubs.usgs.gov/of/2015/1211/ofr20151211_sheet2.pdf","text":"Sheet 2","linkFileType":{"id":1,"text":"pdf"},"description":"OFR 2015-1211 Sheet 2 PDF","linkHelpText":"Shaded-Relief Bathymetry, Offshore of Fort Ross Map Area, California By Peter Dartnell and Rikk G. Kvitek"},{"id":311820,"rank":18,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/ofr20151140","text":"Open-File Report 2015–1140","linkHelpText":"<em>California State Waters Map Series—Offshore of Bodega Head, California</em>, by Samuel Y. Johnson and others."},{"id":311821,"rank":19,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/of/2015/1098/","text":"Open-File Report 2015–1098","linkHelpText":"<em>California State Waters Map Series—Offshore of Salt Point, California</em>, by Samuel Y. Johnson and others."},{"id":311822,"rank":20,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/of/2015/1114/","text":"Open-File Report 2015–1114","linkHelpText":"<em>California State Waters Map Series—Offshore of Point Reyes and Vicinity, California</em>, by Janet T. Watt and others."}],"scale":"24000","country":"United States","state":"California","otherGeospatial":"Fort Ross","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -123.3056,\n              38.3967\n            ],\n            [\n              -123.3056,\n              38.5558\n            ],\n            [\n              -123.1028,\n              38.5558\n            ],\n            [\n              -123.1028,\n              38.3967\n            ],\n            [\n              -123.3056,\n              38.3967\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","contact":"<p><a href=\"http://walrus.wr.usgs.gov/infobank/programs/html/staff2html/staff.html\" target=\"_blank\" data-mce-href=\"http://walrus.wr.usgs.gov/infobank/programs/html/staff2html/staff.html\">Contact Information</a><br>Pacific Coastal &amp; Marine Science Center<br>U.S. Geological Survey<br>Pacific Science Center<br>2885 Mission St.<br>Santa Cruz, CA 95060<br><a href=\"http://walrus.wr.usgs.gov/\" target=\"_blank\" data-mce-href=\"http://walrus.wr.usgs.gov/\">http://walrus.wr.usgs.gov/</a></p>","tableOfContents":"<ul>\n<li>Chapter 1. Introduction</li>\n<li>Chapter 2. Bathymetry and Backscatter-Intensity Maps of the Offshore of Fort Ross Map Area</li>\n<li>Chapter 3. Data Integration and Visualization for the Offshore of Fort Ross Map Area</li>\n<li>Chapter 4. Seafloor-Character Map of the Offshore of Fort Ross Map Area</li>\n<li>Chapter 5. Ground-Truth Studies for the Offshore of Fort Ross Map Area</li>\n<li>Chapter 6. Potential Marine Benthic Habitats of the Offshore of Fort Ross Map Area</li>\n<li>Chapter 7. Subsurface Geology and Structure of the Offshore of Fort Ross Map Area and the Salt Point to Drakes Bay Region</li>\n<li>Chapter 8. Geologic and Geomorphic Map of the Offshore of Fort Ross Map Area</li>\n</ul>","publishingServiceCenter":{"id":14,"text":"Menlo Park PSC"},"publishedDate":"2015-12-03","noUsgsAuthors":false,"publicationDate":"2015-12-03","publicationStatus":"PW","scienceBaseUri":"566167b4e4b06a3ea36c5651","contributors":{"editors":[{"text":"Johnson, Samuel Y. 0000-0001-7972-9977 sjohnson@usgs.gov","orcid":"https://orcid.org/0000-0001-7972-9977","contributorId":2607,"corporation":false,"usgs":true,"family":"Johnson","given":"Samuel","email":"sjohnson@usgs.gov","middleInitial":"Y.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":580877,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Cochran, Susan A. 0000-0002-2442-8787 scochran@usgs.gov","orcid":"https://orcid.org/0000-0002-2442-8787","contributorId":2062,"corporation":false,"usgs":true,"family":"Cochran","given":"Susan A.","email":"scochran@usgs.gov","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":580878,"contributorType":{"id":2,"text":"Editors"},"rank":2}],"authors":[{"text":"Johnson, Samuel Y. 0000-0001-7972-9977 sjohnson@usgs.gov","orcid":"https://orcid.org/0000-0001-7972-9977","contributorId":2607,"corporation":false,"usgs":true,"family":"Johnson","given":"Samuel","email":"sjohnson@usgs.gov","middleInitial":"Y.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":579459,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dartnell, Peter 0000-0002-9554-729X pdartnell@usgs.gov","orcid":"https://orcid.org/0000-0002-9554-729X","contributorId":2688,"corporation":false,"usgs":true,"family":"Dartnell","given":"Peter","email":"pdartnell@usgs.gov","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":579460,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Golden, Nadine E. ngolden@usgs.gov","contributorId":1980,"corporation":false,"usgs":true,"family":"Golden","given":"Nadine E.","email":"ngolden@usgs.gov","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":579461,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hartwell, Stephen R. 0000-0002-3522-7526 shartwell@usgs.gov","orcid":"https://orcid.org/0000-0002-3522-7526","contributorId":4995,"corporation":false,"usgs":true,"family":"Hartwell","given":"Stephen","email":"shartwell@usgs.gov","middleInitial":"R.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":579462,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Erdey, Mercedes D. merdey@usgs.gov","contributorId":5411,"corporation":false,"usgs":true,"family":"Erdey","given":"Mercedes","email":"merdey@usgs.gov","middleInitial":"D.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":579463,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Greene, H. Gary","contributorId":78669,"corporation":false,"usgs":true,"family":"Greene","given":"H. Gary","affiliations":[],"preferred":false,"id":579464,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Cochrane, Guy R. 0000-0002-8094-4583 gcochrane@usgs.gov","orcid":"https://orcid.org/0000-0002-8094-4583","contributorId":2870,"corporation":false,"usgs":true,"family":"Cochrane","given":"Guy","email":"gcochrane@usgs.gov","middleInitial":"R.","affiliations":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":579465,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Kvitek, Rikk G.","contributorId":107804,"corporation":false,"usgs":true,"family":"Kvitek","given":"Rikk","email":"","middleInitial":"G.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":579466,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Manson, Michael W.","contributorId":50447,"corporation":false,"usgs":true,"family":"Manson","given":"Michael","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":579467,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Endris, Charles A.","contributorId":87875,"corporation":false,"usgs":true,"family":"Endris","given":"Charles","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":579468,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Dieter, Bryan E.","contributorId":21859,"corporation":false,"usgs":true,"family":"Dieter","given":"Bryan E.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":579469,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Watt, Janet 0000-0002-4759-3814 jwatt@usgs.gov","orcid":"https://orcid.org/0000-0002-4759-3814","contributorId":146222,"corporation":false,"usgs":true,"family":"Watt","given":"Janet","email":"jwatt@usgs.gov","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":579470,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Krigsman, Lisa M.","contributorId":43642,"corporation":false,"usgs":true,"family":"Krigsman","given":"Lisa M.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":579471,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Sliter, Ray W. 0000-0003-0337-3454 rsliter@usgs.gov","orcid":"https://orcid.org/0000-0003-0337-3454","contributorId":1992,"corporation":false,"usgs":true,"family":"Sliter","given":"Ray","email":"rsliter@usgs.gov","middleInitial":"W.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":579472,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Lowe, Erik N. eriklowe@usgs.gov","contributorId":5288,"corporation":false,"usgs":true,"family":"Lowe","given":"Erik","email":"eriklowe@usgs.gov","middleInitial":"N.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":579473,"contributorType":{"id":1,"text":"Authors"},"rank":15},{"text":"Chin, John L.","contributorId":98291,"corporation":false,"usgs":true,"family":"Chin","given":"John L.","affiliations":[],"preferred":false,"id":579474,"contributorType":{"id":1,"text":"Authors"},"rank":16}]}}
,{"id":70193079,"text":"70193079 - 2015 - Variability within nearshore ecosystems of the Gulf of Alaska","interactions":[],"lastModifiedDate":"2017-12-21T10:21:20","indexId":"70193079","displayToPublicDate":"2015-12-03T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":9,"text":"Other Report"},"title":"Variability within nearshore ecosystems of the Gulf of Alaska","docAbstract":"<p>Nearshore marine habitats, which represent the interface among air, land and sea, form a critical component of the Gulf of Alaska (GOA) ecosystem. As an interface, the nearshore facilitates transfer of water, nutrients and biota between terrestrial and oceanic systems, creating zones of high productivity. The nearshore provides a variety of ecosystem services, including (1) nursery grounds for a wide variety of marine invertebrates and fishes (e.g., crabs, salmon, and herring), (2) nesting and pupping habitats for many pelagic marine predators (e.g., sea bird nesting colonies and pinniped rookeries), (3) important feeding habitats for high trophic level pelagic predators (e.g., killer whales), (4) habitat for resident nearshore species (including sea otters, harbor seals, shorebirds, sea ducks, nearshore fishes, and marine invertebrates), many of which are important sources of commercial and subsistence harvests, and (5) recreational, commercial and subsistence opportunities for human populations (Figure 1-1). The canopy forming kelps and eel grass beds found in the nearshore provide primary production and structure to nursery habitats, and also can dissipate wave energy thus reducing coastal erosion, and serve as a carbon “sink” capable of storing substantial amounts of atmospheric CO<sub>2</sub> (Wilmers et al. 2012). </p>","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Quantifying temporal and spatial ecosystem variability across the northern Gulf of Alaska to understand mechanisms of change. 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,{"id":70160391,"text":"70160391 - 2015 - Early Permian conodont fauna and stratigraphy of the Garden Valley Formation, Eureka County, Nevada","interactions":[],"lastModifiedDate":"2015-12-21T11:03:54","indexId":"70160391","displayToPublicDate":"2015-12-03T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3481,"text":"Stratigraphy","active":true,"publicationSubtype":{"id":10}},"title":"Early Permian conodont fauna and stratigraphy of the Garden Valley Formation, Eureka County, Nevada","docAbstract":"<p>The lower Part of the Garden Valley Formation yields two distinct conodont faunas. One of late Asselian age dominated by M<i>esogondolella</i> and <i>Streptognathodus</i> and one of Artinskian age dominated by <i>Sweetognathus</i> with <i>Mesogondolella</i>. The Asselian fauna contains the same species as those found in the type area of the Asselian in the southern Urals including <i>Mesogondolella dentiseparata</i>, described for the first time outside of the Urals. Apparatuses for <i>Sweetognathus whitei</i>, <i>Diplognathodus stevensi</i>, and I<i>dioprioniodus</i> sp. are described. The Garden Valley Formation represents a marine pro-delta basin and platform, and marine and shore fan delta complex deposition. The fan-delta complex was most likely deposited from late Artinskian to lateWordian. The Garden Valley Formation records tremendous swings in depositional setting from shallow-water to basin to shore.</p>","language":"English","publisher":"Micropaleontology Press","usgsCitation":"Wardlaw, B.R., Gallegos, D.M., Chernykh, V.V., and Snyder, W.S., 2015, Early Permian conodont fauna and stratigraphy of the Garden Valley Formation, Eureka County, Nevada: Stratigraphy, v. 12, no. 2, p. 197-215.","productDescription":"19 p.","startPage":"197","endPage":"215","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-039095","costCenters":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"links":[{"id":312593,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":312591,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://www.micropress.org/microaccess/stratigraphy/issue-319/article-1948","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Nevada","county":"Eureka County","otherGeospatial":"Sulphur Springs Range","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -116.3,\n              39.3\n            ],\n            [\n              -116.3,\n              41\n            ],\n            [\n              -115.9,\n              41\n            ],\n            [\n              -115.9,\n              39.3\n            ],\n            [\n              -116.3,\n              39.3\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"12","issue":"2","publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"567930c5e4b0da412f4fb550","contributors":{"authors":[{"text":"Wardlaw, Bruce R. bwardlaw@usgs.gov","contributorId":266,"corporation":false,"usgs":true,"family":"Wardlaw","given":"Bruce","email":"bwardlaw@usgs.gov","middleInitial":"R.","affiliations":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"preferred":true,"id":582814,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gallegos, Dora M.","contributorId":150734,"corporation":false,"usgs":false,"family":"Gallegos","given":"Dora","email":"","middleInitial":"M.","affiliations":[{"id":18082,"text":"Albertson College of Idaho","active":true,"usgs":false}],"preferred":false,"id":582816,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Chernykh, Valery V.","contributorId":150733,"corporation":false,"usgs":false,"family":"Chernykh","given":"Valery","email":"","middleInitial":"V.","affiliations":[{"id":18081,"text":"Rusian Academy of Science","active":true,"usgs":false}],"preferred":false,"id":582815,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Snyder, Walter S.","contributorId":150735,"corporation":false,"usgs":false,"family":"Snyder","given":"Walter","email":"","middleInitial":"S.","affiliations":[{"id":18083,"text":"Boise State Univ.","active":true,"usgs":false}],"preferred":false,"id":582817,"contributorType":{"id":1,"text":"Authors"},"rank":13}]}}
,{"id":70160532,"text":"70160532 - 2015 - Biodegradability of dissolved organic carbon in permafrost soils and aquatic systems: a meta-analysis","interactions":[],"lastModifiedDate":"2015-12-22T13:11:17","indexId":"70160532","displayToPublicDate":"2015-12-03T00:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1011,"text":"Biogeosciences","active":true,"publicationSubtype":{"id":10}},"title":"Biodegradability of dissolved organic carbon in permafrost soils and aquatic systems: a meta-analysis","docAbstract":"<p><span>As Arctic regions warm and frozen soils thaw, the large organic carbon pool stored in permafrost becomes increasingly vulnerable to decomposition or transport. The transfer of newly mobilized carbon to the atmosphere and its potential influence upon climate change will largely depend on the degradability of carbon delivered to aquatic ecosystems. Dissolved organic carbon (DOC) is a key regulator of aquatic metabolism, yet knowledge of the mechanistic controls on DOC biodegradability is currently poor due to a scarcity of long-term data sets, limited spatial coverage of available data, and methodological diversity. Here, we performed parallel biodegradable DOC (BDOC) experiments at six Arctic sites (16 experiments) using a standardized incubation protocol to examine the effect of methodological differences commonly used in the literature. We also synthesized results from 14 aquatic and soil leachate BDOC studies from across the circum-arctic permafrost region to examine pan-arctic trends in BDOC.</span><br /><br /><span>An increasing extent of permafrost across the landscape resulted in higher DOC losses in both soil and aquatic systems. We hypothesize that the unique composition of (yedoma) permafrost-derived DOC combined with limited prior microbial processing due to low soil temperature and relatively short flow path lengths and transport times, contributed to a higher overall terrestrial and freshwater DOC loss. Additionally, we found that the fraction of BDOC decreased moving down the fluvial network in continuous permafrost regions, i.e. from streams to large rivers, suggesting that highly biodegradable DOC is lost in headwater streams. We also observed a seasonal (January&ndash;December) decrease in BDOC in large streams and rivers, but saw no apparent change in smaller streams or soil leachates. We attribute this seasonal change to a combination of factors including shifts in carbon source, changing DOC residence time related to increasing thaw-depth, increasing water temperatures later in the summer, as well as decreasing hydrologic connectivity between soils and surface water as the thaw season progresses. Our results suggest that future climate warming-induced shifts of continuous permafrost into discontinuous permafrost regions could affect the degradation potential of thaw-released DOC, the amount of BDOC, as well as its variability throughout the Arctic summer. We lastly recommend a standardized BDOC protocol to facilitate the comparison of future work and improve our knowledge of processing and transport of DOC in a changing Arctic.</span></p>","language":"English","publisher":"Copernicus on behalf of the European Geosciences Union","doi":"10.5194/bg-12-6915-2015","usgsCitation":"Vonk, J.E., Tank, S.E., Paul J. 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,{"id":70157081,"text":"70157081 - 2015 - Evaluating predictors of local dabbling duck abundance during migration: Managing the spectrum of conditions faced by migrants","interactions":[],"lastModifiedDate":"2015-12-21T15:31:10","indexId":"70157081","displayToPublicDate":"2015-12-01T16:30:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3764,"text":"Wildfowl","onlineIssn":"2052-6458","printIssn":"0954-6324","active":true,"publicationSubtype":{"id":10}},"title":"Evaluating predictors of local dabbling duck abundance during migration: Managing the spectrum of conditions faced by migrants","docAbstract":"<p>The development of robust modelling techniques to derive inferences from large-scale migratory bird monitoring data at appropriate scales has direct relevance to their management. The Integrated Waterbird Management and Monitoring programme (IWMM) represents one of the few attempts to monitor migrating waterbirds across entire flyways using targeted local surveys. This dataset included 13,208,785 waterfowl (eight <i>Anas</i> species) counted during 28,000 surveys at nearly 1,000 locations across the eastern United States between autumn 2010 and spring 2013 and was used to evaluate potential predictors of waterfowl abundance at the wetland scale. Mixed-effects, log-linear models of local abundance were built for the Atlantic and Mississippi flyways during spring and autumn migration to identify factors relating to habitat structure, forage availability, and migration timing that influence target dabbling duck species abundance. Results indicated that migrating dabbling ducks responded differently to environmental factors. While the factors identified demonstrated a high degree of importance, they were inconsistent across species, flyways and seasons. Furthermore, the direction and magnitude of the importance of each covariate group considered here varied across species. Given our results, actionable policy recommendations are likely to be most effective if they consider species-level variation within targeted taxonomic units and across management areas. The methods implemented here can easily be applied to other contexts, and serve as a novel investigation into local-level population patterns using data from broad-scale monitoring programmes.</p>","language":"English","publisher":"Wildfowl & Wetlands Trust","publisherLocation":"Slimbridge","collaboration":"The Nature Conservancy; U.S. Fish and Wildlife Service","usgsCitation":"Aagaard, K., Crimmins, S.M., Thogmartin, W.E., Tavernia, B., and Lyons, J., 2015, Evaluating predictors of local dabbling duck abundance during migration: Managing the spectrum of conditions faced by migrants: Wildfowl, v. 65, p. 100-120.","productDescription":"21 p.","startPage":"100","endPage":"120","numberOfPages":"21","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-066133","costCenters":[{"id":606,"text":"Upper Midwest Environmental Sciences 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E.","affiliations":[],"preferred":false,"id":571574,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70159863,"text":"70159863 - 2015 - Depth, ice thickness, and ice-out timing cause divergent hydrologic responses among Arctic lakes","interactions":[],"lastModifiedDate":"2018-02-04T13:30:21","indexId":"70159863","displayToPublicDate":"2015-12-01T15:30:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Depth, ice thickness, and ice-out timing cause divergent hydrologic responses among Arctic lakes","docAbstract":"<p><span>Lakes are prevalent in the Arctic and thus play a key role in regional hydrology. Since many Arctic lakes are shallow and ice grows thick (historically 2-m or greater), seasonal ice commonly freezes to the lake bed (bedfast ice) by winter's end. Bedfast ice fundamentally alters lake energy balance and melt-out processes compared to deeper lakes that exceed the maximum ice thickness (floating ice) and maintain perennial liquid water below floating ice. Our analysis of lakes in northern Alaska indicated that ice-out of bedfast ice lakes occurred on average 17 days earlier (22-June) than ice-out on adjacent floating ice lakes (9-July). Earlier ice-free conditions in bedfast ice lakes caused higher open-water evaporation, 28% on average, relative to floating ice lakes and this divergence increased in lakes closer to the coast and in cooler summers. Water isotopes (</span><span>18</span><span>O and&nbsp;</span><span>2</span><span>H) indicated similar differences in evaporation between these lake types. Our analysis suggests that ice regimes created by the combination of lake depth relative to ice thickness and associated ice-out timing currently cause a strong hydrologic divergence among Arctic lakes. Thus understanding the distribution and dynamics of lakes by ice regime is essential for predicting regional hydrology. An observed regime shift in lakes to floating ice conditions due to thinner ice growth may initially offset lake drying because of lower evaporative loss from this lake type. This potential negative feedback caused by winter processes occurs in spite of an overall projected increase in evapotranspiration as the Arctic climate warms.</span></p>","language":"English","publisher":"AGU","doi":"10.1002/2015WR017362","usgsCitation":"Arp, C.D., Jones, B.M., Liljedahl, A.K., Hinkel, K., and Welker, J.A., 2015, Depth, ice thickness, and ice-out timing cause divergent hydrologic responses among Arctic lakes: Water Resources Research, v. 51, no. 12, p. 9379-9401, https://doi.org/10.1002/2015WR017362.","productDescription":"23 p.","startPage":"9379","endPage":"9401","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-064849","costCenters":[{"id":118,"text":"Alaska Science Center Geography","active":true,"usgs":true}],"links":[{"id":471586,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1002/2015wr017362","text":"Publisher Index Page"},{"id":311769,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -158.18115234375,\n              68.4072675680943\n            ],\n            [\n              -158.18115234375,\n              72.22210088942214\n            ],\n            [\n              -147.8759765625,\n              72.22210088942214\n            ],\n            [\n              -147.8759765625,\n              68.4072675680943\n            ],\n            [\n              -158.18115234375,\n              68.4072675680943\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"51","issue":"12","publishingServiceCenter":{"id":12,"text":"Tacoma PSC"},"noUsgsAuthors":false,"publicationDate":"2015-12-07","publicationStatus":"PW","scienceBaseUri":"565ec4afe4b071e7ea54440b","contributors":{"authors":[{"text":"Arp, Christopher D.","contributorId":17330,"corporation":false,"usgs":false,"family":"Arp","given":"Christopher","email":"","middleInitial":"D.","affiliations":[{"id":6752,"text":"University of Alaska Fairbanks","active":true,"usgs":false}],"preferred":false,"id":580787,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jones, Benjamin M. 0000-0002-1517-4711 bjones@usgs.gov","orcid":"https://orcid.org/0000-0002-1517-4711","contributorId":2286,"corporation":false,"usgs":true,"family":"Jones","given":"Benjamin","email":"bjones@usgs.gov","middleInitial":"M.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":118,"text":"Alaska Science Center Geography","active":true,"usgs":true}],"preferred":true,"id":580786,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Liljedahl, Anna K. 0000-0001-7114-6443","orcid":"https://orcid.org/0000-0001-7114-6443","contributorId":150135,"corporation":false,"usgs":false,"family":"Liljedahl","given":"Anna","email":"","middleInitial":"K.","affiliations":[{"id":6695,"text":"UAF","active":true,"usgs":false}],"preferred":false,"id":580788,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hinkel, Kenneth M.","contributorId":64170,"corporation":false,"usgs":true,"family":"Hinkel","given":"Kenneth M.","affiliations":[],"preferred":false,"id":580789,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Welker, Jeffery A.","contributorId":150136,"corporation":false,"usgs":false,"family":"Welker","given":"Jeffery","email":"","middleInitial":"A.","affiliations":[{"id":12492,"text":"UAA Alaska Natural Heritage Program & Biological Sciences Department","active":true,"usgs":false}],"preferred":false,"id":580790,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70160657,"text":"70160657 - 2015 - Non-invasive flow path characterization in a mining-impacted wetland","interactions":[],"lastModifiedDate":"2018-09-04T15:29:32","indexId":"70160657","displayToPublicDate":"2015-12-01T15:00:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2233,"text":"Journal of Contaminant Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Non-invasive flow path characterization in a mining-impacted wetland","docAbstract":"<p>Time-lapse electrical resistivity (ER) was used to capture the dilution of a seasonal pulse of acid mine drainage (AMD) contamination in the subsurface of a wetland downgradient of the abandoned Pennsylvania mine workings in central Colorado. Data were collected monthly from mid-July to late October of 2013, with an additional dataset collected in June of 2014. Inversion of the ER data shows the development through time of multiple resistive anomalies in the subsurface, which corroborating data suggest are driven by changes in total dissolved solids (TDS) localized in preferential flow pathways. Sensitivity analyses on a synthetic model of the site suggest that the anomalies would need to be at least several meters in diameter to be adequately resolved by the inversions. The existence of preferential flow paths would have a critical impact on the extent of attenuation mechanisms at the site, and their further characterization could be used to parameterize reactive transport models in developing quantitative predictions of remediation strategies.</p>","language":"English","publisher":"Elsevier","publisherLocation":"New York","doi":"10.1016/j.jconhyd.2015.10.002","usgsCitation":"Bethune, J., Randell, J., Runkel, R.L., and Singha, K., 2015, Non-invasive flow path characterization in a mining-impacted wetland: Journal of Contaminant Hydrology, v. 183, p. 29-39, https://doi.org/10.1016/j.jconhyd.2015.10.002.","productDescription":"11 p.","startPage":"29","endPage":"39","numberOfPages":"11","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-066981","costCenters":[{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":471587,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1016/j.jconhyd.2015.10.002","text":"Publisher Index Page"},{"id":312932,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Colorado","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -106.24603271484375,\n              39.257778150283336\n            ],\n            [\n              -106.24603271484375,\n              39.85915479295669\n            ],\n            [\n              -105.08697509765625,\n              39.85915479295669\n            ],\n            [\n              -105.08697509765625,\n              39.257778150283336\n            ],\n            [\n              -106.24603271484375,\n              39.257778150283336\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"183","publishingServiceCenter":{"id":2,"text":"Denver PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56826b46e4b0a04ef4925b88","contributors":{"authors":[{"text":"Bethune, James","contributorId":150889,"corporation":false,"usgs":false,"family":"Bethune","given":"James","email":"","affiliations":[{"id":6606,"text":"Colorado School of Mines","active":true,"usgs":false}],"preferred":false,"id":583484,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Randell, Jackie","contributorId":150890,"corporation":false,"usgs":false,"family":"Randell","given":"Jackie","email":"","affiliations":[{"id":6606,"text":"Colorado School of Mines","active":true,"usgs":false}],"preferred":false,"id":583485,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Runkel, Robert L. 0000-0003-3220-481X runkel@usgs.gov","orcid":"https://orcid.org/0000-0003-3220-481X","contributorId":685,"corporation":false,"usgs":true,"family":"Runkel","given":"Robert","email":"runkel@usgs.gov","middleInitial":"L.","affiliations":[{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true}],"preferred":true,"id":583483,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Singha, Kamini","contributorId":76733,"corporation":false,"usgs":true,"family":"Singha","given":"Kamini","affiliations":[],"preferred":false,"id":583486,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70160877,"text":"70160877 - 2015 - A new record of the late Pleistocene coral <i>Pocillopora palmata</i> from the Dry Tortugas, Florida reef tract, USA","interactions":[],"lastModifiedDate":"2016-01-04T13:31:13","indexId":"70160877","displayToPublicDate":"2015-12-01T14:30:00","publicationYear":"2015","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3000,"text":"Palaios","active":true,"publicationSubtype":{"id":10}},"title":"A new record of the late Pleistocene coral <i>Pocillopora palmata</i> from the Dry Tortugas, Florida reef tract, USA","docAbstract":"<p>Pocilloporid corals dominated shallow-water environments in the Caribbean during much of the Cenozoic; however, the regional diversity of this family declined over the last 15 My, culminating with the extinction of its final member, <i>Pocillopora palmata</i>, during the latest Pleistocene. Here we present a new record of <i>P. palmata</i> from Dry Tortugas National Park in the Florida Keys and infer its likely age. Although most existing records of <i>P. palmata</i> are from the sub-aerial reef deposits of MIS5e (&sim; 125 ka), the presently submerged reef in the Dry Tortugas was too deep (&gt; 18 m) during this period to support significant reef growth. In contrast, the maximum water depth during MIS5a (&sim; 82 ka) was only &sim; 5.6 m, which would have been ideal for <i>P. palmata</i>. Diagenetic alteration prevented direct dating of the samples; however, the similarity between the depths of the Pleistocene bedrock in the Dry Tortugas and other reefs in the Florida Keys, which have been previously dated to MIS5a, support the conclusion that <i>P. palmata</i> likely grew in the Dry Tortugas during this period. Our study provides important new information on the history of <i>P. palmata</i>, but it also highlights the vital need for more comprehensive studies of the Quaternary history of Caribbean reef development. With modern reef degradation already driving yet another restructuring of Caribbean coral assemblages, insights from past extinctions may prove critical in determining the prognosis of Caribbean reefs in the future.</p>","language":"English","publisher":"Society for Sedimentary Geology (SEPM)","publisherLocation":"Tulsa, OK","doi":"10.2110/palo.2015.030","collaboration":"Ilsa B. Kuffner (USGS), Hai Cheng (U. Minnesota), and R. Lawrence Edwards (U. Minnesota)","usgsCitation":"Toth, L., Kuffner, I.B., Cheng, H., and Edwards, R.L., 2015, A new record of the late Pleistocene coral <i>Pocillopora palmata</i> from the Dry Tortugas, Florida reef tract, USA: Palaios, v. 30, no. 12, p. 827-835, https://doi.org/10.2110/palo.2015.030.","productDescription":"9 p.","startPage":"827","endPage":"835","numberOfPages":"9","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-065691","costCenters":[{"id":574,"text":"St. Petersburg Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":313208,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Florida","otherGeospatial":"Dry Tortugas National Park","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -82.8618049621582,\n              24.631023880670345\n            ],\n            [\n              -82.86755561828613,\n              24.633286469281998\n            ],\n            [\n              -82.8742504119873,\n              24.633754585948758\n            ],\n            [\n              -82.88128852844238,\n              24.63110190164926\n            ],\n            [\n              -82.8823184967041,\n              24.62610846080021\n            ],\n            [\n              -82.88008689880371,\n              24.621114820458505\n            ],\n            [\n              -82.86961555480957,\n              24.620958765983687\n            ],\n            [\n              -82.86043167114258,\n              24.619944407149372\n            ],\n            [\n              -82.85313606262206,\n              24.623299562653035\n            ],\n            [\n              -82.85511016845702,\n              24.627590909374685\n            ],\n            [\n              -82.8618049621582,\n              24.631023880670345\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"30","issue":"12","publishingServiceCenter":{"id":8,"text":"Raleigh PSC"},"noUsgsAuthors":false,"publicationDate":"2015-12-28","publicationStatus":"PW","scienceBaseUri":"568ba5bee4b0e7594ee77644","contributors":{"authors":[{"text":"Toth, Lauren T. ltoth@usgs.gov","contributorId":151036,"corporation":false,"usgs":true,"family":"Toth","given":"Lauren T.","email":"ltoth@usgs.gov","affiliations":[{"id":574,"text":"St. Petersburg Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":584128,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kuffner, Ilsa B. 0000-0001-8804-7847 ikuffner@usgs.gov","orcid":"https://orcid.org/0000-0001-8804-7847","contributorId":3105,"corporation":false,"usgs":true,"family":"Kuffner","given":"Ilsa","email":"ikuffner@usgs.gov","middleInitial":"B.","affiliations":[{"id":574,"text":"St. Petersburg Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":584129,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cheng, Hai","contributorId":85896,"corporation":false,"usgs":true,"family":"Cheng","given":"Hai","affiliations":[],"preferred":false,"id":584130,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Edwards, R. 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,{"id":70159819,"text":"fs20153080 - 2015 - U.S. Geological Survey National Water Census: Colorado River Basin Geographic Focus Area Study","interactions":[],"lastModifiedDate":"2016-04-12T13:28:19","indexId":"fs20153080","displayToPublicDate":"2015-12-01T13:30:00","publicationYear":"2015","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2015-3080","title":"U.S. Geological Survey National Water Census: Colorado River Basin Geographic Focus Area Study","docAbstract":"<h1>Introduction</h1>\n<p>The U.S. Geological Survey&rsquo;s (USGS) concept of a national census (or accounting) of water resources has evolved over the last several decades as the Nation has experienced increasing concern over water availability for multiple competing uses. The implementation of a USGS National Water Census was described in the USGS 2007 science strategy document that identified the highest priority science topics for the decade 2007&ndash;17. In 2009, the SECURE Water Act (Public Law 111&ndash;11, subtitle&nbsp;F) authorized the USGS to create a Water Availability and Use Assess&shy;ment Program for the Nation, and in 2012, the Department of the Interior WaterSMART initiative provided funding to begin implementation of the USGS National Water Census (NWC).</p>\n<p>Generally, the USGS NWC approaches water-availability assessment in terms of a &ldquo;water budget.&rdquo; The water-budget approach seeks to better quantify the inflows and outflows of water, as well as the change in storage volume, both nationally and at a regional scale and, by doing so, provides critical information to managers and stakeholders responsible for making water-availability decisions. The NWC has two primary components: Topical Studies and Geographic Focus Area Studies. Topical Studies do research on methods that can provide nationwide estimates of particular water-budget components at the subwatershed scale. Some examples of NWC Topical Studies include estimation of streamflow at ungaged locations; periodic quantification of evapotranspiration; and water use related to development of unconventional oil and gas. These efforts are planned to include additional topics in the future. Geographic Focus Area Studies (FASs) assess water availability and use within a defined geographic area, typically a surface-water drainage basin, to increase the understanding of factors affecting water availability in the region. In the FASs, local stakeholder input helps the USGS identify what components of the water budget are in most need of additional understanding or quantification. Focus Area Studies are planned as 3-year efforts and, typically, three FASs are ongoing in different parts of the country at any given time.</p>\n<p>The Colorado River Basin (CRB) and the Delaware and Apalachicola-Chattahoochee-Flint (ACF) River Basins were selected by the Department of the Interior for the first round of FASs because of the perceived water shortages in the basins and potential conflicts over water supply and allocations. After gathering input from numerous stakeholders in the CRB, the USGS determined that surface&shy;-water resources in the basin were already being closely monitored and that the most important scientific contribution could be made by helping to improve estimates of four water&shy;-budget components: evapotranspiration losses, snowpack hydrodynamics, water&shy;-use information, and the relative importance of groundwater discharge in supporting streamflow across the basin. The purpose of this fact sheet is to provide a brief summary of the CRB FAS results as the study nears completion. Although some project results are still in the later stages of review and publication, this fact sheet provides an overall description of the work completed and cites the publications in which additional information can be found.</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/fs20153080","usgsCitation":"Bruce, B.W., Clow, D.W.,  Maupin, M.A., Miller, M.P., Senay, G.B., Sexstone, G.A., and Susong, D.D., 2015, U.S. Geological Survey National Water Census—Colorado River Basin Geographic Focus Area Study: U.S. Geological Survey Fact Sheet 2015–3080, 4 p., https://dx.doi.org/10.3133/fs20153080.","productDescription":"4 p.","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-070751","costCenters":[{"id":5078,"text":"Southwest Regional Director's 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