{"pageNumber":"2494","pageRowStart":"62325","pageSize":"25","recordCount":184689,"records":[{"id":70030663,"text":"70030663 - 2006 - Geomorphic control of landscape carbon accumulation","interactions":[],"lastModifiedDate":"2012-03-12T17:21:01","indexId":"70030663","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2319,"text":"Journal of Geophysical Research G: Biogeosciences","active":true,"publicationSubtype":{"id":10}},"title":"Geomorphic control of landscape carbon accumulation","docAbstract":"We use the CREEP process-response model to simulate soil organic carbon accumulation in an undisturbed prairie site in Iowa. Our primary objectives are to identify spatial patterns of carbon accumulation, and explore the effect of erosion on basin-scale C accumulation. Our results point to two general findings. First, redistribution of soil carbon by erosion results in a net increase in basin-wide carbon storage relative to a noneroding environment. Landscape-average mean residence times are increased in an eroding landscape owing to the burial/preservation of otherwise labile C. Second, field observations taken along a slope transect may overlook significant intraslope variations in carbon accumulation. Spatial patterns of modeled deep C accumulation are complex. While surface carbon with its relatively short equilibration time is predictable from surface properties, deep carbon is strongly influenced by the landscape's geomorphic and climatic history, resulting in wide spatial variability. Convergence and divergence associated with upland swales and interfluves result in bimodal carbon distributions in upper and mid slopes; variability in carbon storage within modeled mid slopes was as high as simulated differences between erosional shoulders and depositional valley bottoms. The bimodality of mid-slope C variability in the model suggests that a three-dimensional sampling strategy is preferable over the traditional two-dimensional analog or \"catena\" approach. Copyright 2006 by the American Geophysical Union.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research G: Biogeosciences","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2005JG000077","issn":"01480227","usgsCitation":"Rosenbloom, N., Harden, J., Neff, J.C., and Schimel, D.S., 2006, Geomorphic control of landscape carbon accumulation: Journal of Geophysical Research G: Biogeosciences, v. 111, no. 1, https://doi.org/10.1029/2005JG000077.","costCenters":[],"links":[{"id":477455,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2005jg000077","text":"Publisher Index Page"},{"id":211877,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2005JG000077"},{"id":239250,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"111","issue":"1","noUsgsAuthors":false,"publicationDate":"2006-01-31","publicationStatus":"PW","scienceBaseUri":"505a2785e4b0c8380cd59972","contributors":{"authors":[{"text":"Rosenbloom, N.A.","contributorId":11409,"corporation":false,"usgs":true,"family":"Rosenbloom","given":"N.A.","email":"","affiliations":[],"preferred":false,"id":428117,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Harden, J.W. 0000-0002-6570-8259","orcid":"https://orcid.org/0000-0002-6570-8259","contributorId":38585,"corporation":false,"usgs":true,"family":"Harden","given":"J.W.","affiliations":[],"preferred":false,"id":428119,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Neff, J. C.","contributorId":29935,"corporation":false,"usgs":false,"family":"Neff","given":"J.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":428118,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Schimel, D. S.","contributorId":84104,"corporation":false,"usgs":true,"family":"Schimel","given":"D.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":428120,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70030406,"text":"70030406 - 2006 - Thermodynamic calculations in the system CH4-H2O and methane hydrate phase equilibria","interactions":[],"lastModifiedDate":"2012-03-12T17:21:03","indexId":"70030406","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2425,"text":"Journal of Physical Chemistry B","active":true,"publicationSubtype":{"id":10}},"title":"Thermodynamic calculations in the system CH4-H2O and methane hydrate phase equilibria","docAbstract":"Using the Gibbs function of reaction, equilibrium pressure, temperature conditions for the formation of methane clathrate hydrate have been calculated from the thermodynamic properties of phases in the system CH4-H 2O. The thermodynamic model accurately reproduces the published phase-equilibria data to within ??2 K of the observed equilibrium boundaries in the range 0.08-117 MPa and 190-307 K. The model also provides an estimate of the third-law entropy of methane hydrate at 273.15 K, 0.1 MPa of 56.2 J mol-1 K-1 for 1/n CH4??H 2O, where n is the hydrate number. Agreement between the calculated and published phase-equilibria data is optimized when the hydrate composition is fixed and independent of the pressure and temperature for the conditions modeled. ?? 2006 American Chemical Society.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Physical Chemistry B","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1021/jp055422f","issn":"15206106","usgsCitation":"Circone, S., Kirby, S.H., and Stern, L., 2006, Thermodynamic calculations in the system CH4-H2O and methane hydrate phase equilibria: Journal of Physical Chemistry B, v. 110, no. 16, p. 8232-8239, https://doi.org/10.1021/jp055422f.","startPage":"8232","endPage":"8239","numberOfPages":"8","costCenters":[],"links":[{"id":211721,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/jp055422f"},{"id":239065,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"110","issue":"16","noUsgsAuthors":false,"publicationDate":"2006-04-04","publicationStatus":"PW","scienceBaseUri":"505bb26ee4b08c986b3257d2","contributors":{"authors":[{"text":"Circone, S.","contributorId":35901,"corporation":false,"usgs":true,"family":"Circone","given":"S.","email":"","affiliations":[],"preferred":false,"id":427030,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kirby, S. H.","contributorId":51721,"corporation":false,"usgs":true,"family":"Kirby","given":"S.","middleInitial":"H.","affiliations":[],"preferred":false,"id":427032,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stern, L.A.","contributorId":38293,"corporation":false,"usgs":true,"family":"Stern","given":"L.A.","email":"","affiliations":[],"preferred":false,"id":427031,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70030630,"text":"70030630 - 2006 - Three-dimensional model for multi-component reactive transport with variable density groundwater flow","interactions":[],"lastModifiedDate":"2012-03-12T17:21:00","indexId":"70030630","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1551,"text":"Environmental Modelling and Software","active":true,"publicationSubtype":{"id":10}},"title":"Three-dimensional model for multi-component reactive transport with variable density groundwater flow","docAbstract":"PHWAT is a new model that couples a geochemical reaction model (PHREEQC-2) with a density-dependent groundwater flow and solute transport model (SEAWAT) using the split-operator approach. PHWAT was developed to simulate multi-component reactive transport in variable density groundwater flow. Fluid density in PHWAT depends not on only the concentration of a single species as in SEAWAT, but also the concentrations of other dissolved chemicals that can be subject to reactive processes. Simulation results of PHWAT and PHREEQC-2 were compared in their predictions of effluent concentration from a column experiment. Both models produced identical results, showing that PHWAT has correctly coupled the sub-packages. PHWAT was then applied to the simulation of a tank experiment in which seawater intrusion was accompanied by cation exchange. The density dependence of the intrusion and the snow-plough effect in the breakthrough curves were reflected in the model simulations, which were in good agreement with the measured breakthrough data. Comparison simulations that, in turn, excluded density effects and reactions allowed us to quantify the marked effect of ignoring these processes. Next, we explored numerical issues involved in the practical application of PHWAT using the example of a dense plume flowing into a tank containing fresh water. It was shown that PHWAT could model physically unstable flow and that numerical instabilities were suppressed. Physical instability developed in the model in accordance with the increase of the modified Rayleigh number for density-dependent flow, in agreement with previous research. ?? 2004 Elsevier Ltd. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Modelling and Software","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.envsoft.2004.11.008","issn":"13648152","usgsCitation":"Mao, X., Prommer, H., Barry, D., Langevin, C., Panteleit, B., and Li, L., 2006, Three-dimensional model for multi-component reactive transport with variable density groundwater flow: Environmental Modelling and Software, v. 21, no. 5, p. 615-628, https://doi.org/10.1016/j.envsoft.2004.11.008.","startPage":"615","endPage":"628","numberOfPages":"14","costCenters":[],"links":[{"id":487629,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://infoscience.epfl.ch/record/101311","text":"External Repository"},{"id":211906,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.envsoft.2004.11.008"},{"id":239284,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"21","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb332e4b08c986b325c48","contributors":{"authors":[{"text":"Mao, X.","contributorId":97704,"corporation":false,"usgs":true,"family":"Mao","given":"X.","email":"","affiliations":[],"preferred":false,"id":427944,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Prommer, H.","contributorId":12264,"corporation":false,"usgs":true,"family":"Prommer","given":"H.","affiliations":[],"preferred":false,"id":427940,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Barry, D.A.","contributorId":100194,"corporation":false,"usgs":true,"family":"Barry","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":427945,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Langevin, C.D.","contributorId":25976,"corporation":false,"usgs":true,"family":"Langevin","given":"C.D.","email":"","affiliations":[],"preferred":false,"id":427941,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Panteleit, B.","contributorId":70597,"corporation":false,"usgs":true,"family":"Panteleit","given":"B.","email":"","affiliations":[],"preferred":false,"id":427943,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Li, L.","contributorId":63615,"corporation":false,"usgs":true,"family":"Li","given":"L.","affiliations":[],"preferred":false,"id":427942,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70030882,"text":"70030882 - 2006 - Age calibration of carbonate rind thickness in late Pleistocene soils for surficial deposit age estimation, Southwest USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:04","indexId":"70030882","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3218,"text":"Quaternary Research","active":true,"publicationSubtype":{"id":10}},"title":"Age calibration of carbonate rind thickness in late Pleistocene soils for surficial deposit age estimation, Southwest USA","docAbstract":"Carbonate rinds have been used for cross-correlation of landforms as well as a quantitative indicator of soil age. Using the measured rind thickness of clasts found within a deposit, whose age has been independently determined, allows the construction of a calibrated surface-age proxy. Measurements were taken at sites within the Mojave Desert, the northwestern Sonoran Desert, the southern Great Basin, and the western Colorado Plateau. These sites are all within about 300 km of the intersection of the borders of the states of California, Arizona, and Nevada. In the study area, elevation varied from 200 to 1200 m, MAP was from 95 to 195 mm, and MAT was from 18.4?? to 23.3??. The calibrated proxy, while not accounting for the effects of parent material or climate on rind development, does show a strong correlation (R2 = 0.74, P < 0.05) between carbonate rind thickness and surface age for deposits of late to middle Pleistocene age. The calibrated chronosequence, rind thickness = 0.0889 + 0.0079 [surface age]), is in general valid over a large region of southwestern United States. This statistical relation suggests that parent material, climate, and elevation may not be as strong a control on carbonate accumulation as is age for younger soils.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Quaternary Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.yqres.2005.06.003","issn":"00335894","usgsCitation":"Amoroso, L., 2006, Age calibration of carbonate rind thickness in late Pleistocene soils for surficial deposit age estimation, Southwest USA: Quaternary Research, v. 65, no. 1, p. 172-178, https://doi.org/10.1016/j.yqres.2005.06.003.","startPage":"172","endPage":"178","numberOfPages":"7","costCenters":[],"links":[{"id":211635,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.yqres.2005.06.003"},{"id":238962,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"65","issue":"1","noUsgsAuthors":false,"publicationDate":"2017-01-20","publicationStatus":"PW","scienceBaseUri":"5059e8e5e4b0c8380cd47f5f","contributors":{"authors":[{"text":"Amoroso, L.","contributorId":68933,"corporation":false,"usgs":true,"family":"Amoroso","given":"L.","email":"","affiliations":[],"preferred":false,"id":429071,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70028983,"text":"70028983 - 2006 - Debris flow deposition and reworking by the Colorado River in Grand Canyon, Arizona","interactions":[],"lastModifiedDate":"2020-12-02T15:07:16.789333","indexId":"70028983","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","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":"Debris flow deposition and reworking by the Colorado River in Grand Canyon, Arizona","docAbstract":"<p><span id=\"_mce_caret\" data-mce-bogus=\"1\" data-mce-type=\"format-caret\"><span class=\"paraNumber\"><span></span></span></span><span>Flow regulation by large dams affects downstream flow competence and channel maintenance. Debris flows from 740 tributaries in Grand Canyon, Arizona, transport coarse‐grained sediment onto debris fans adjacent to the Colorado River. These debris fans constrict the river to form rapids and are reworked during river flows that entrain particles and transport them downstream. Beginning in 1963, flood control operations of Glen Canyon Dam limited the potential for reworking of aggraded debris fans. We analyzed change in debris fans at the mouths of 75‐Mile and Monument Creeks using photogrammetry of aerial photography taken from 1965 to 2000 and supplemented with ground surveys performed from 1987 to 2005. Our results quantify the debris fan aggradation that resulted from debris flows from 1984 to 2003. Volume, area, and river constriction increased at both debris fans. Profiles of the two debris fans show that net aggradation occurred in the middle of debris fans at stages above maximum dam releases, and surface shape shifted from concave to convex. Dam releases above power plant capacity partially reworked both debris fans, although reworking removed much less sediment than what was added by debris flow deposition. Large dam releases would be required to create additional reworking to limit the rate of debris fan aggradation in Grand Canyon.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2005WR004847","usgsCitation":"Yanites, B.J., Webb, R., Griffiths, P.G., and Magirl, C.S., 2006, Debris flow deposition and reworking by the Colorado River in Grand Canyon, Arizona: Water Resources Research, v. 42, no. 11, W11411, 16 p., https://doi.org/10.1029/2005WR004847.","productDescription":"W11411, 16 p.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":622,"text":"Washington Water Science Center","active":true,"usgs":true},{"id":49157,"text":"Rocky Mountain Regional Office","active":true,"usgs":true}],"links":[{"id":477578,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2005wr004847","text":"Publisher Index Page"},{"id":236628,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona","otherGeospatial":"Colorado River, Grand Canyon","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -113.93920898437499,\n              35.782170703266075\n            ],\n            [\n              -109.083251953125,\n              35.782170703266075\n            ],\n            [\n              -109.083251953125,\n              36.932330061503144\n            ],\n            [\n              -113.93920898437499,\n              36.932330061503144\n            ],\n            [\n              -113.93920898437499,\n              35.782170703266075\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"42","issue":"11","noUsgsAuthors":false,"publicationDate":"2006-11-18","publicationStatus":"PW","scienceBaseUri":"5059fdefe4b0c8380cd4ea0a","contributors":{"authors":[{"text":"Yanites, Brian J.","contributorId":28792,"corporation":false,"usgs":false,"family":"Yanites","given":"Brian","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":420836,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Webb, Robert H. rhwebb@usgs.gov","contributorId":1573,"corporation":false,"usgs":false,"family":"Webb","given":"Robert H.","email":"rhwebb@usgs.gov","affiliations":[{"id":12625,"text":"School of Natural Resources and the Environment, University of Arizona, Tucson, AZ, 85721, USA","active":true,"usgs":false}],"preferred":false,"id":420835,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Griffiths, Peter G. 0000-0002-8663-8907 pggriffi@usgs.gov","orcid":"https://orcid.org/0000-0002-8663-8907","contributorId":187,"corporation":false,"usgs":true,"family":"Griffiths","given":"Peter","email":"pggriffi@usgs.gov","middleInitial":"G.","affiliations":[],"preferred":true,"id":420838,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Magirl, Christopher S. 0000-0002-9922-6549 magirl@usgs.gov","orcid":"https://orcid.org/0000-0002-9922-6549","contributorId":1822,"corporation":false,"usgs":true,"family":"Magirl","given":"Christopher","email":"magirl@usgs.gov","middleInitial":"S.","affiliations":[{"id":128,"text":"Arizona Water Science Center","active":true,"usgs":true},{"id":622,"text":"Washington Water Science Center","active":true,"usgs":true}],"preferred":true,"id":420837,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70030876,"text":"70030876 - 2006 - A preliminary environmental site investigation for a bridge over the Mississippi River at Moline, Illinois","interactions":[],"lastModifiedDate":"2012-03-12T17:21:19","indexId":"70030876","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"A preliminary environmental site investigation for a bridge over the Mississippi River at Moline, Illinois","docAbstract":"The Illinois State Geological Survey completed a preliminary environmental site assessment along the alignment of Interstate 74 (I-74) and its bridge over the Mississippi River for the Illinois Department of Transportation (IDOT) in 2002. The objective of the study was to determine if any of the parcels proposed for acquisition or on which soil excavation was intended were sufficiently contaminated to require additional investigation by a commercial environmental consultant under contract to IDOT and to identify potential natural hazards that might have an impact on the proposed construction project. VOC were detected at 13 of 37 sites tested for VOC. These sites included an elevator manufacturer, former foundries, former and active machine shops, former and active gasoline stations, and a former automobile dealer. PAH above TACO Tier 1 residential standards were detected on an island in the Mississippi River. PCB was detected at a former foundry and a control box for a railroad. Magnetic anomalies that might indicate the presence of UST were detected in a park that formerly had been the site of a city garage, adjacent to a parking lot that formerly contained an automobile dealer, and at the sites of three former gasoline stations. These studies helped IDOT to save millions of dollars in highway construction projects. This is an abstract of a paper presented in Contaminated Soils, Sediments and Water: Success and Challenges (Massachusetts Fall 2005).","largerWorkTitle":"Contaminated Soils, Sediments and Water: Success and Challenges","conferenceTitle":"Contaminated Soils, Sediments and Water: Success and Challenges","conferenceLocation":"MA","language":"English","doi":"10.1007/0-387-28324-2_31","isbn":"0387283226","usgsCitation":"Trask, C., 2006, A preliminary environmental site investigation for a bridge over the Mississippi River at Moline, Illinois, <i>in</i> Contaminated Soils, Sediments and Water: Success and Challenges, MA, p. 445-470, https://doi.org/10.1007/0-387-28324-2_31.","startPage":"445","endPage":"470","numberOfPages":"26","costCenters":[],"links":[{"id":211558,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/0-387-28324-2_31"},{"id":238863,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e4f3e4b0c8380cd46a37","contributors":{"editors":[{"text":"Calabrese E.J.Kostecki P.T.Dragun J.","contributorId":128334,"corporation":true,"usgs":false,"organization":"Calabrese E.J.Kostecki P.T.Dragun J.","id":536655,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Trask, C.B.","contributorId":100608,"corporation":false,"usgs":true,"family":"Trask","given":"C.B.","email":"","affiliations":[],"preferred":false,"id":429046,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70030399,"text":"70030399 - 2006 - Real-time monitoring and massive inversion of source parameters of very long period seismic signals: An application to Stromboli Volcano, Italy","interactions":[],"lastModifiedDate":"2019-03-26T10:16:57","indexId":"70030399","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","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":"Real-time monitoring and massive inversion of source parameters of very long period seismic signals: An application to Stromboli Volcano, Italy","docAbstract":"<p><span>We present a comprehensive processing tool for the real‐time analysis of the source mechanism of very long period (VLP) seismic data based on waveform inversions performed in the frequency domain for a point source. A search for the source providing the best‐fitting solution is conducted over a three‐dimensional grid of assumed source locations, in which the Green's functions associated with each point source are calculated by finite differences using the reciprocal relation between source and receiver. Tests performed on 62 nodes of a Linux cluster indicate that the waveform inversion and search for the best‐fitting signal over 100,000 point sources require roughly 30 s of processing time for a 2‐min‐long record. The procedure is applied to post‐processing of a data archive and to continuous automatic inversion of real‐time data at Stromboli, providing insights into different modes of degassing at this volcano.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2005GL024703","issn":"00948276","usgsCitation":"Auger, E., D’Auria, L., Martini, M., Chouet, B., and Dawson, P., 2006, Real-time monitoring and massive inversion of source parameters of very long period seismic signals: An application to Stromboli Volcano, Italy: Geophysical Research Letters, v. 33, no. 4, 5 p., https://doi.org/10.1029/2005GL024703.","productDescription":"5 p.","costCenters":[{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":486867,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2005gl024703","text":"Publisher Index Page"},{"id":239515,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Italy","otherGeospatial":"Stromboli volcano","volume":"33","issue":"4","noUsgsAuthors":false,"publicationDate":"2006-02-22","publicationStatus":"PW","scienceBaseUri":"505a95a7e4b0c8380cd81b5b","contributors":{"authors":[{"text":"Auger, E.","contributorId":71844,"corporation":false,"usgs":true,"family":"Auger","given":"E.","email":"","affiliations":[],"preferred":false,"id":427011,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"D’Auria, L.","contributorId":28821,"corporation":false,"usgs":true,"family":"D’Auria","given":"L.","email":"","affiliations":[],"preferred":false,"id":427008,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Martini, M.","contributorId":24909,"corporation":false,"usgs":true,"family":"Martini","given":"M.","email":"","affiliations":[],"preferred":false,"id":427007,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Chouet, B.","contributorId":68465,"corporation":false,"usgs":true,"family":"Chouet","given":"B.","affiliations":[],"preferred":false,"id":427010,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Dawson, P. 0000-0003-4065-0588","orcid":"https://orcid.org/0000-0003-4065-0588","contributorId":49529,"corporation":false,"usgs":true,"family":"Dawson","given":"P.","affiliations":[],"preferred":false,"id":427009,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70030217,"text":"70030217 - 2006 - State summaries: Utah","interactions":[],"lastModifiedDate":"2012-03-12T17:21:02","indexId":"70030217","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2755,"text":"Mining Engineering","active":true,"publicationSubtype":{"id":10}},"title":"State summaries: Utah","docAbstract":"The value of Utah's mineral production in 2005 was estimated to be a record $3.58 billion. This was $1.26 billion higher than the revised value of $2.32 billion for 2004. All major industry segments gained in value in 2005. In the value of nonfuel mineral production, Utah ranked fourth. The outlook for 2006 is cautiously optimistic. The value of mineral production is projected to increase slightly in 2006 due to increased production of most base and precious metals, coal and most major industrial minerals.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Mining Engineering","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"00265187","usgsCitation":"Bon, R., and Krahulec, K., 2006, State summaries: Utah: Mining Engineering, v. 58, no. 5, p. 116-122.","startPage":"116","endPage":"122","numberOfPages":"7","costCenters":[],"links":[{"id":239364,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"58","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b96d9e4b08c986b31b74f","contributors":{"authors":[{"text":"Bon, R.L.","contributorId":26880,"corporation":false,"usgs":true,"family":"Bon","given":"R.L.","email":"","affiliations":[],"preferred":false,"id":426170,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Krahulec, K.A.","contributorId":42429,"corporation":false,"usgs":true,"family":"Krahulec","given":"K.A.","affiliations":[],"preferred":false,"id":426171,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70030698,"text":"70030698 - 2006 - Storage and transit time of chemicals in thick unsaturated zones under rangeland and irrigated cropland, High Plains, United States","interactions":[],"lastModifiedDate":"2018-10-29T08:08:48","indexId":"70030698","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","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":"Storage and transit time of chemicals in thick unsaturated zones under rangeland and irrigated cropland, High Plains, United States","docAbstract":"<p><span>In 2000-2002, three rangeland and six irrigated sites were instrumented to assess the storage and transit time of chemicals in thick (15 to 50 m) unsaturated zones (UZ) in the High Plains. These processes are likely to influence relations between land use and groundwater quality, yet they have not been documented systematically in the High Plains. Land use and climate were important controls on the size of subsoil chloride, nitrate, and pesticide compound reservoirs. The reservoirs under irrigated cropland generally were larger than those under rangeland because more chemicals were applied to cropland than to rangeland. In some cases, chloride and nitrate reservoirs under rangeland were larger than those under cropland, presumably because of long‐term evaporative concentration near the base of the root zone. Natural salts mobilized by irrigation return flow accounted for as much as 60 and 80% of the nitrate and chloride reservoirs, respectively, under some cropland, as indicated by detailed chemical profiles and isotopic tracers (</span><sup>15</sup><span>N,<span>&nbsp;</span></span><sup>18</sup><span>O in nitrate and<span>&nbsp;</span></span><sup>2</sup><span>H,<span>&nbsp;</span></span><sup>3</sup><span>H,<span>&nbsp;</span></span><sup>18</sup><span>O in water). Advective chemical transit times in the UZ under cropland ranged from about 50 to 375 years, longer than any of the instrumented fields had been irrigated, yet agrichemicals were detected at the water table at four of the six sites. The data provide evidence for the existence of slow and fast paths for water movement in the UZ, with larger subsoil chemical reservoirs occurring in areas dominated by slow paths. Implications of these findings with respect to water quality in the aquifer are significant because they indicate that the amount of chemical mass reaching the aquifer could increase with time as chemicals that still reside under irrigated fields reach the water table.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2005WR004417","usgsCitation":"McMahon, P., Dennehy, K., Bruce, B.W., Böhlke, J., Michel, R.L., Gurdak, J., and Hurlbut, D., 2006, Storage and transit time of chemicals in thick unsaturated zones under rangeland and irrigated cropland, High Plains, United States: Water Resources Research, v. 42, no. 3, W03413; 18 p., https://doi.org/10.1029/2005WR004417.","productDescription":"W03413; 18 p.","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":239184,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"42","issue":"3","noUsgsAuthors":false,"publicationDate":"2006-03-14","publicationStatus":"PW","scienceBaseUri":"505b986ce4b08c986b31c019","contributors":{"authors":[{"text":"McMahon, P.B. 0000-0001-7452-2379","orcid":"https://orcid.org/0000-0001-7452-2379","contributorId":10762,"corporation":false,"usgs":true,"family":"McMahon","given":"P.B.","affiliations":[],"preferred":false,"id":428249,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dennehy, K.F.","contributorId":41841,"corporation":false,"usgs":true,"family":"Dennehy","given":"K.F.","affiliations":[],"preferred":false,"id":428253,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bruce, B. W.","contributorId":19577,"corporation":false,"usgs":true,"family":"Bruce","given":"B.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":428250,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Böhlke, J.K. 0000-0001-5693-6455","orcid":"https://orcid.org/0000-0001-5693-6455","contributorId":96696,"corporation":false,"usgs":true,"family":"Böhlke","given":"J.K.","affiliations":[],"preferred":false,"id":428255,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Michel, R. L.","contributorId":86375,"corporation":false,"usgs":true,"family":"Michel","given":"R.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":428254,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Gurdak, J.J.","contributorId":35119,"corporation":false,"usgs":true,"family":"Gurdak","given":"J.J.","email":"","affiliations":[],"preferred":false,"id":428252,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Hurlbut, D.B.","contributorId":32597,"corporation":false,"usgs":true,"family":"Hurlbut","given":"D.B.","email":"","affiliations":[],"preferred":false,"id":428251,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70030699,"text":"70030699 - 2006 - Geochemical patterns of arsenic-enriched ground water in fractured, crystalline bedrock, Northport, Maine, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:01","indexId":"70030699","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":835,"text":"Applied Geochemistry","active":true,"publicationSubtype":{"id":10}},"title":"Geochemical patterns of arsenic-enriched ground water in fractured, crystalline bedrock, Northport, Maine, USA","docAbstract":"High mean As concentrations of up to 26.6 ??mol/L (1990 ??g/L) occur in ground water collected from a fractured-bedrock system composed of sulfidic schist with granitic to dioritic intrusions. Sulfides in the bedrock are the primary source of the As in the ground water, but the presence of arsenopyrite in rock core retrieved from a borehole with As concentrations in the ground water barely above the detection limit of 2.0 ??mol/L, shows that there are complicating factors. Chemical analyses of water from 35 bedrock wells throughout a small watershed reveal spatial clustering of wells with high As concentrations. Stiff diagrams and box plots distinguish three distinct types; calcium-bicarbonate-dominated water with low As concentrations (CaHCO 3 type), sodium-bicarbonate-dominated water with moderately high As concentrations (NaHCO3 type), and calcium-bicarbonate-dominated water with very high As concentrations (High-As type). It is proposed that differences in recharge area and ground-water evolution, and possible bedrock composition difference are responsible for the chemical distinctions within the watershed. Lack of correlation of As concentrations with pH indicates that desorption of As is an insignificant control on As concentration. Correlations of As concentrations with Fe and redox parameters indicates that reductive dissolution of Fe(III) oxyhydroxides may play a role in the occurrence of high As concentrations in the NaHCO3 and High-As type water. The oxidation of sulfide minerals occurs within the ground-water system and is ultimately responsible for the existence of As in the ground water, but there is no correlation between As and SO4 concentrations, probably due to precipitation of Fe(III) oxyhydroxides and adsorption of As under oxidizing conditions. Crown Copyright ?? 2006 Published by Elsevier Ltd. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Applied Geochemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.apgeochem.2005.12.001","issn":"08832927","usgsCitation":"Lipfert, G., Reeve, A., Sidle, W., and Marvinney, R., 2006, Geochemical patterns of arsenic-enriched ground water in fractured, crystalline bedrock, Northport, Maine, USA: Applied Geochemistry, v. 21, no. 3, p. 528-545, https://doi.org/10.1016/j.apgeochem.2005.12.001.","startPage":"528","endPage":"545","numberOfPages":"18","costCenters":[],"links":[{"id":211820,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.apgeochem.2005.12.001"},{"id":239185,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"21","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a168be4b0c8380cd551b4","contributors":{"authors":[{"text":"Lipfert, G.","contributorId":53135,"corporation":false,"usgs":true,"family":"Lipfert","given":"G.","email":"","affiliations":[],"preferred":false,"id":428256,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Reeve, A.S.","contributorId":64446,"corporation":false,"usgs":true,"family":"Reeve","given":"A.S.","email":"","affiliations":[],"preferred":false,"id":428258,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sidle, W.C.","contributorId":93911,"corporation":false,"usgs":true,"family":"Sidle","given":"W.C.","email":"","affiliations":[],"preferred":false,"id":428259,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Marvinney, R.","contributorId":63220,"corporation":false,"usgs":true,"family":"Marvinney","given":"R.","email":"","affiliations":[],"preferred":false,"id":428257,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70030215,"text":"70030215 - 2006 - Speciation of volatile arsenic at geothermal features in Yellowstone National Park","interactions":[],"lastModifiedDate":"2021-05-28T15:43:38.639607","indexId":"70030215","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1759,"text":"Geochimica et Cosmochimica Acta","active":true,"publicationSubtype":{"id":10}},"title":"Speciation of volatile arsenic at geothermal features in Yellowstone National Park","docAbstract":"<div id=\"abstracts\" class=\"Abstracts\"><div id=\"aep-abstract-id13\" class=\"abstract author\" lang=\"en\"><div id=\"aep-abstract-sec-id14\"><p>Geothermal features in the Yellowstone National Park contain up to several milligram per liter of aqueous arsenic. Part of this arsenic is volatilized and released into the atmosphere. Total volatile arsenic concentrations of 0.5–200&nbsp;mg/m<sup>3</sup><span>&nbsp;</span>at the surface of the hot springs were found to exceed the previously assumed nanogram per cubic meter range of background concentrations by orders of magnitude. Speciation of the volatile arsenic was performed using solid-phase micro-extraction fibers with analysis by GC–MS. The arsenic species most frequently identified in the samples is (CH<sub>3</sub>)<sub>2</sub>AsCl, followed by (CH<sub>3</sub>)<sub>3</sub>As, (CH<sub>3</sub>)<sub>2</sub>AsSCH<sub>3</sub>, and CH<sub>3</sub>AsCl<sub>2</sub><span>&nbsp;</span>in decreasing order of frequency. This report contains the first documented occurrence of chloro- and thioarsines in a natural environment. Toxicity, mobility, and degradation products are unknown.</p></div></div></div>","language":"English","publisher":"Elsevier","doi":"10.1016/j.gca.2006.02.019","issn":"00167037","usgsCitation":"Planer-Friedrich, B., Lehr, C., Matschullat, J., Merkel, B., Nordstrom, D.K., and Sandstrom, M.W., 2006, Speciation of volatile arsenic at geothermal features in Yellowstone National Park: Geochimica et Cosmochimica Acta, v. 70, no. 10, p. 2480-2491, https://doi.org/10.1016/j.gca.2006.02.019.","productDescription":"12 p.","startPage":"2480","endPage":"2491","costCenters":[{"id":452,"text":"National Water Quality Laboratory","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":239362,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211969,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.gca.2006.02.019"}],"country":"United States","state":"Idaho, Montana, Wyoming","otherGeospatial":"Yellowstone National Park","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -111.18713378906249,\n              44.04811573082351\n            ],\n            [\n              -109.58862304687499,\n              44.04811573082351\n            ],\n            [\n              -109.58862304687499,\n              45.158800738352106\n            ],\n            [\n              -111.18713378906249,\n              45.158800738352106\n            ],\n            [\n              -111.18713378906249,\n              44.04811573082351\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"70","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b94eee4b08c986b31acc7","contributors":{"authors":[{"text":"Planer-Friedrich, B.","contributorId":87749,"corporation":false,"usgs":true,"family":"Planer-Friedrich","given":"B.","email":"","affiliations":[],"preferred":false,"id":426161,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lehr, C.","contributorId":103871,"corporation":false,"usgs":true,"family":"Lehr","given":"C.","email":"","affiliations":[],"preferred":false,"id":426164,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Matschullat, J.","contributorId":79293,"corporation":false,"usgs":true,"family":"Matschullat","given":"J.","email":"","affiliations":[],"preferred":false,"id":426160,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Merkel, B.J.","contributorId":103471,"corporation":false,"usgs":true,"family":"Merkel","given":"B.J.","email":"","affiliations":[],"preferred":false,"id":426163,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Nordstrom, D. Kirk 0000-0003-3283-5136 dkn@usgs.gov","orcid":"https://orcid.org/0000-0003-3283-5136","contributorId":749,"corporation":false,"usgs":true,"family":"Nordstrom","given":"D.","email":"dkn@usgs.gov","middleInitial":"Kirk","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":false,"id":426162,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Sandstrom, Mark W. 0000-0003-0006-5675 sandstro@usgs.gov","orcid":"https://orcid.org/0000-0003-0006-5675","contributorId":706,"corporation":false,"usgs":true,"family":"Sandstrom","given":"Mark","email":"sandstro@usgs.gov","middleInitial":"W.","affiliations":[{"id":452,"text":"National Water Quality Laboratory","active":true,"usgs":true},{"id":503,"text":"Office of Water Quality","active":true,"usgs":true},{"id":37464,"text":"WMA - Laboratory & Analytical Services Division","active":true,"usgs":true},{"id":5046,"text":"Branch of Analytical Serv (NWQL)","active":true,"usgs":true}],"preferred":true,"id":426159,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70030400,"text":"70030400 - 2006 - Large rock avalanches triggered by the M 7.9 Denali Fault, Alaska, earthquake of 3 November 2002","interactions":[],"lastModifiedDate":"2012-03-12T17:21:12","indexId":"70030400","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1517,"text":"Engineering Geology","active":true,"publicationSubtype":{"id":10}},"title":"Large rock avalanches triggered by the M 7.9 Denali Fault, Alaska, earthquake of 3 November 2002","docAbstract":"The moment magnitude (M) 7.9 Denali Fault, Alaska, earthquake of 3 November 2002 triggered thousands of landslides, primarily rock falls and rock slides, that ranged in volume from rock falls of a few cubic meters to rock avalanches having volumes as great as 20 ?? 106 m3. The pattern of landsliding was unusual: the number and concentration of triggered slides was much less than expected for an earthquake of this magnitude, and the landslides were concentrated in a narrow zone about 30-km wide that straddled the fault-rupture zone over its entire 300-km length. Despite the overall sparse landslide concentration, the earthquake triggered several large rock avalanches that clustered along the western third of the rupture zone where acceleration levels and ground-shaking frequencies are thought to have been the highest. Inferences about near-field strong-shaking characteristics drawn from interpretation of the landslide distribution are strikingly consistent with results of recent inversion modeling that indicate that high-frequency energy generation was greatest in the western part of the fault-rupture zone and decreased markedly to the east. ?? 2005 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Engineering Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.enggeo.2005.06.029","issn":"00137952","usgsCitation":"Jibson, R., Harp, E.L., Schulz, W., and Keefer, D.K., 2006, Large rock avalanches triggered by the M 7.9 Denali Fault, Alaska, earthquake of 3 November 2002: Engineering Geology, v. 83, no. 1-3, p. 144-160, https://doi.org/10.1016/j.enggeo.2005.06.029.","startPage":"144","endPage":"160","numberOfPages":"17","costCenters":[],"links":[{"id":212095,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.enggeo.2005.06.029"},{"id":239516,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"83","issue":"1-3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4481e4b0c8380cd66b79","contributors":{"authors":[{"text":"Jibson, R.W.","contributorId":8467,"corporation":false,"usgs":true,"family":"Jibson","given":"R.W.","email":"","affiliations":[],"preferred":false,"id":427013,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Harp, E. L.","contributorId":59026,"corporation":false,"usgs":true,"family":"Harp","given":"E.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":427015,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Schulz, W.","contributorId":6641,"corporation":false,"usgs":true,"family":"Schulz","given":"W.","email":"","affiliations":[],"preferred":false,"id":427012,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Keefer, D. K.","contributorId":21176,"corporation":false,"usgs":true,"family":"Keefer","given":"D.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":427014,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70030216,"text":"70030216 - 2006 - The potential for chromium to affect the fertilization process of Chinook salmon (<i>Oncorhynchus tshawytscha</i>) in the Hanford Reach of the Columbia River, Washington, USA","interactions":[],"lastModifiedDate":"2017-02-01T11:11:28","indexId":"70030216","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":887,"text":"Archives of Environmental Contamination and Toxicology","active":true,"publicationSubtype":{"id":10}},"title":"The potential for chromium to affect the fertilization process of Chinook salmon (<i>Oncorhynchus tshawytscha</i>) in the Hanford Reach of the Columbia River, Washington, USA","docAbstract":"<p>The Hanford Nuclear Reservation in south central Washington was claimed by the federal government as a site for the production of plutonium. During the course of production and operation of the facilities at Hanford, radionuclides and chromium were discharged directly into the river and also contaminated the groundwater. This study was designed to assess the effects of chromium (Cr) on Chinook salmon (Oncorhynchus tshawytscha) fertilization under exposure conditions similar to those of the Hanford Reach of the Columbia River. Chinook salmon gametes were exposed to aqueous Cr concentrations ranging from 0 to 266 μg Cr l−1. The current ambient water-quality criteria (AWQC) established for the protection of aquatic life (United States Environmental Protection Agency [USEPA] 1986) is 11 μg Cr l−1. Cr has been measured in pore water from bottom sediments of the Columbia River at concentrations &gt;600 μg Cr l−1. Under exposure conditions designed to closely mimic events that occur in the river, the fertilization of Chinook salmon eggs was not affected by concentrations of Cr ranging from 11 to 266 μg Cr l−1. Data suggest that the instantaneous nature of fertilization likely limits the potential effects of Cr on fertilization success. As a result, the current AWQC of 11 μg Cr l−1 is most likely protective of Chinook salmon fertilization.</p>","language":"English","publisher":"Springer","doi":"10.1007/s00244-005-0010-2","issn":"00904341","usgsCitation":"Farag, A., Harper, D., Cleveland, L., Brumbaugh, W.G., and Little, E.E., 2006, The potential for chromium to affect the fertilization process of Chinook salmon (<i>Oncorhynchus tshawytscha</i>) in the Hanford Reach of the Columbia River, Washington, USA: Archives of Environmental Contamination and Toxicology, v. 50, no. 4, p. 575-579, https://doi.org/10.1007/s00244-005-0010-2.","productDescription":"5 p.","startPage":"575","endPage":"579","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"links":[{"id":239363,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211970,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s00244-005-0010-2"}],"country":"United States","state":"Oregon","otherGeospatial":"Hanford Reach","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -119.80590820312499,\n              46.66074749832071\n            ],\n            [\n              -119.8553466796875,\n              46.59661864884465\n            ],\n            [\n              -119.61914062499999,\n              46.63435070293566\n            ],\n            [\n              -119.5147705078125,\n              46.66074749832071\n            ],\n            [\n              -119.39941406249999,\n              46.54752767224308\n            ],\n            [\n              -119.3280029296875,\n              46.46813299215554\n            ],\n            [\n              -119.26208496093751,\n              46.58529390583601\n            ],\n            [\n              -119.41589355468749,\n              46.71350244599995\n            ],\n            [\n              -119.5037841796875,\n              46.74738913515841\n            ],\n            [\n              -119.72900390625001,\n              46.68336307047754\n            ],\n            [\n              -119.80590820312499,\n              46.66074749832071\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"50","issue":"4","noUsgsAuthors":false,"publicationDate":"2006-02-01","publicationStatus":"PW","scienceBaseUri":"505baeaee4b08c986b32427d","contributors":{"authors":[{"text":"Farag, A.M.","contributorId":106273,"corporation":false,"usgs":true,"family":"Farag","given":"A.M.","email":"","affiliations":[],"preferred":false,"id":426168,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Harper, D.D.","contributorId":82526,"corporation":false,"usgs":true,"family":"Harper","given":"D.D.","email":"","affiliations":[],"preferred":false,"id":426167,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cleveland, L.","contributorId":82084,"corporation":false,"usgs":true,"family":"Cleveland","given":"L.","email":"","affiliations":[],"preferred":false,"id":426166,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Brumbaugh, W. G.","contributorId":106441,"corporation":false,"usgs":true,"family":"Brumbaugh","given":"W.","email":"","middleInitial":"G.","affiliations":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"preferred":false,"id":426169,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Little, E. E.","contributorId":13187,"corporation":false,"usgs":true,"family":"Little","given":"E.","email":"","middleInitial":"E.","affiliations":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"preferred":false,"id":426165,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70030662,"text":"70030662 - 2006 - Puhimau thermal area: a window into the upper east rift zone of Kilauea Volcano, Hawaii?","interactions":[],"lastModifiedDate":"2019-04-08T11:30:28","indexId":"70030662","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3208,"text":"Pure and Applied Geophysics","active":true,"publicationSubtype":{"id":10}},"title":"Puhimau thermal area: a window into the upper east rift zone of Kilauea Volcano, Hawaii?","docAbstract":"<p class=\"Para\">We report the results of two soil CO<sub>2</sub> efflux surveys by the closed chamber circulation method at the Puhimau thermal area in the upper East Rift Zone (ERZ) of Kilauea&nbsp;volcano, Hawaii. The surveys were undertaken in 1996 and 1998 to constrain how much CO<sub>2</sub> might be reaching the ERZ after degassing beneath the summit caldera and whether the Puhimau thermal area might be a significant contributor to the overall CO<sub>2</sub> budget of Kilauea. The area was revisited in 2001 to determine the effects of surface disturbance on efflux values by the collar emplacement technique utilized in the earlier surveys. Utilizing a cutoff value of 50 g m<sup>−2</sup> d<sup>−1</sup> for the surrounding forest background efflux, the CO<sub>2</sub> emission rates for the anomaly at Puhimau thermal area were 27 t d<sup>−1</sup> in 1996 and 17 t d<sup>−1</sup> in 1998. Water vapor was removed before analysis in all cases in order to obtain CO<sub>2</sub> values on a dry air basis and mitigate the effect of water vapor dilution on the measurements. It is clear that Puhimau thermal area is not a significant contributor to Kilauea's&nbsp;CO<sub>2</sub> output and that most of Kilauea's&nbsp;CO<sub>2</sub> (8500 t d<sup>−1</sup>) is degassed at the summit, leaving only magma with its remaining stored volatiles, such as SO<sub>2</sub>, for injection down the ERZ. Because of the low CO<sub>2</sub> emission rate and the presence of a shallow water table in the upper ERZ that effectively scrubs SO<sub>2</sub> and other acid gases, Puhimau thermal area currently does not appear to be generally well suited for observing temporal changes in degassing at&nbsp;Kilauea.</p>","language":"English","publisher":"Springer","doi":"10.1007/s00024-006-0036-z","issn":"00334553","usgsCitation":"McGee, K., Sutton, A.J., Elias, T., Doukas, M., and Gerlach, T., 2006, Puhimau thermal area: a window into the upper east rift zone of Kilauea Volcano, Hawaii?: Pure and Applied Geophysics, v. 163, no. 4, p. 837-851, https://doi.org/10.1007/s00024-006-0036-z.","productDescription":"15 p.","startPage":"837","endPage":"851","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":239218,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Hawaii","otherGeospatial":"Kilauea volcano","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -155.34530639648438,\n              19.24632927300332\n            ],\n            [\n              -155.34530639648438,\n              19.449759112405612\n            ],\n            [\n              -154.85504150390625,\n              19.449759112405612\n            ],\n            [\n              -154.85504150390625,\n              19.24632927300332\n            ],\n            [\n              -155.34530639648438,\n              19.24632927300332\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"163","issue":"4","noUsgsAuthors":false,"publicationDate":"2006-03-28","publicationStatus":"PW","scienceBaseUri":"505a9022e4b0c8380cd7fb5b","contributors":{"authors":[{"text":"McGee, K.A.","contributorId":6059,"corporation":false,"usgs":true,"family":"McGee","given":"K.A.","email":"","affiliations":[],"preferred":false,"id":428112,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sutton, A. J. 0000-0003-1902-3977","orcid":"https://orcid.org/0000-0003-1902-3977","contributorId":28983,"corporation":false,"usgs":true,"family":"Sutton","given":"A.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":428114,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Elias, T. 0000-0002-9592-4518","orcid":"https://orcid.org/0000-0002-9592-4518","contributorId":71195,"corporation":false,"usgs":true,"family":"Elias","given":"T.","affiliations":[],"preferred":false,"id":428116,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Doukas, M.P.","contributorId":28615,"corporation":false,"usgs":true,"family":"Doukas","given":"M.P.","email":"","affiliations":[],"preferred":false,"id":428113,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Gerlach, T.M.","contributorId":38713,"corporation":false,"usgs":true,"family":"Gerlach","given":"T.M.","email":"","affiliations":[],"preferred":false,"id":428115,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70029027,"text":"70029027 - 2006 - Statistical modeling of storm-level Kp occurrences","interactions":[],"lastModifiedDate":"2018-10-29T11:41:51","indexId":"70029027","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","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":"Statistical modeling of storm-level Kp occurrences","docAbstract":"We consider the statistical modeling of the occurrence in time of large Kp magnetic storms as a Poisson process, testing whether or not relatively rare, large Kp events can be considered to arise from a stochastic, sequential, and memoryless process. For a Poisson process, the wait times between successive events occur statistically with an exponential density function. Fitting an exponential function to the durations between successive large Kp events forms the basis of our analysis. Defining these wait times by calculating the differences between times when Kp exceeds a certain value, such as Kp ??? 5, we find the wait-time distribution is not exponential. Because large storms often have several periods with large Kp values, their occurrence in time is not memoryless; short duration wait times are not independent of each other and are often clumped together in time. If we remove same-storm large Kp occurrences, the resulting wait times are very nearly exponentially distributed and the storm arrival process can be characterized as Poisson. Fittings are performed on wait time data for Kp ??? 5, 6, 7, and 8. The mean wait times between storms exceeding such Kp thresholds are 7.12, 16.55, 42.22, and 121.40 days respectively.","language":"English","publisher":"AGU","doi":"10.1029/2006GL026687","issn":"00948276","usgsCitation":"Remick, K., and Love, J.J., 2006, Statistical modeling of storm-level Kp occurrences: Geophysical Research Letters, v. 33, no. 16, Article L16102; 4 p., https://doi.org/10.1029/2006GL026687.","productDescription":"Article L16102; 4 p.","costCenters":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"links":[{"id":477533,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2006gl026687","text":"Publisher Index Page"},{"id":236285,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":209625,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2006GL026687"}],"volume":"33","issue":"16","noUsgsAuthors":false,"publicationDate":"2006-08-22","publicationStatus":"PW","scienceBaseUri":"505b9734e4b08c986b31b946","contributors":{"authors":[{"text":"Remick, K.J.","contributorId":78139,"corporation":false,"usgs":true,"family":"Remick","given":"K.J.","email":"","affiliations":[],"preferred":false,"id":421015,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Love, Jeffrey J. 0000-0002-3324-0348 jlove@usgs.gov","orcid":"https://orcid.org/0000-0002-3324-0348","contributorId":760,"corporation":false,"usgs":true,"family":"Love","given":"Jeffrey","email":"jlove@usgs.gov","middleInitial":"J.","affiliations":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"preferred":true,"id":421014,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70030683,"text":"70030683 - 2006 - Effects of Chinese mineral strategies on the U.S. minerals industry","interactions":[],"lastModifiedDate":"2012-03-12T17:21:15","indexId":"70030683","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2755,"text":"Mining Engineering","active":true,"publicationSubtype":{"id":10}},"title":"Effects of Chinese mineral strategies on the U.S. minerals industry","docAbstract":"For more than two decades now, China has been undergoing rapid economic growth and industrialization. The industrialization and urbanization of the once rural, farming nation is leading to increased consumption of mineral commodities to build infrastructure and to make into consumer goods. This increased consumption has led to higher mineral prices, lower stocks and, in some cases, temporary shortages of minerals. Chinese mineral producers and manufacturers are responding by building capacity, restructuring and modernizing industrial sectors and establishing international network that compete with those of the United States and other nations.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Mining Engineering","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"00265187","usgsCitation":"McCartan, L., Menzie, W., Morse, D., Papp, J., Plunkert, P., and Tse, P., 2006, Effects of Chinese mineral strategies on the U.S. minerals industry: Mining Engineering, v. 58, no. 3, p. 37-42.","startPage":"37","endPage":"42","numberOfPages":"6","costCenters":[],"links":[{"id":239533,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"58","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0649e4b0c8380cd511b0","contributors":{"authors":[{"text":"McCartan, L.","contributorId":55153,"corporation":false,"usgs":true,"family":"McCartan","given":"L.","affiliations":[],"preferred":false,"id":428204,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Menzie, W. D.","contributorId":52916,"corporation":false,"usgs":true,"family":"Menzie","given":"W. D.","affiliations":[],"preferred":false,"id":428203,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Morse, D.E.","contributorId":15780,"corporation":false,"usgs":true,"family":"Morse","given":"D.E.","email":"","affiliations":[],"preferred":false,"id":428201,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Papp, J.F.","contributorId":48604,"corporation":false,"usgs":true,"family":"Papp","given":"J.F.","email":"","affiliations":[],"preferred":false,"id":428202,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Plunkert, P.A.","contributorId":75733,"corporation":false,"usgs":true,"family":"Plunkert","given":"P.A.","affiliations":[],"preferred":false,"id":428206,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Tse, P.-K.","contributorId":70599,"corporation":false,"usgs":true,"family":"Tse","given":"P.-K.","affiliations":[],"preferred":false,"id":428205,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70030936,"text":"70030936 - 2006 - Methanogenic calcite, 13C-depleted bivalve shells, and gas hydrate from a mud volcano offshore southern California","interactions":[],"lastModifiedDate":"2012-03-12T17:21:15","indexId":"70030936","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Methanogenic calcite, 13C-depleted bivalve shells, and gas hydrate from a mud volcano offshore southern California","docAbstract":"Methane and hydrogen sulfide vent from a cold seep above a shallowly buried methane hydrate in a mud volcano located 24 km offshore southern California in?? 800 m of water. Bivalves, authigenic calcite, and methane hydrate were recovered in a 2.1 m piston core. Aragonite shells of two bivalve species are unusually depleted in 13C (to -91??? ??13C), the most 13C-depleted shells of marine macrofauna yet discovered. Carbon isotopes for both living and dead specimens indicate that they used, in part, carbon derived from anaerobically oxidized methane to construct their shells. The ??13C values are highly variable, but most are within the range -12??? to -91???. This variability may be diagnostic for identifying cold-seep-hydrate systems in the geologic record. Authigenic calcite is abundant in the cores down to ???1.5 m subbottom, the top of the methane hydrate. The calcite is depleted in 13C (??13C = -46??? to -58???), indicating that carbon produced by anaerobically oxidized methane is the main source of the calcite. Methane sources include a geologic hydrocarbon reservoir from Miocene source rocks, and biogenic and thermogenic degradation of organic matter in basin sediments. Oxygen isotopes indicate that most calcite formed out of isotopic equilibrium with ambient bottom water, under the influence of gas hydrate dissociation and strong methane flux. High metal content in the mud volcano sediment indicates leaching of basement rocks by fluid circulating along an underlying fault, which also allows for a high flux of fossil methane. ?? 2006 Geological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/G22098.1","issn":"00917613","usgsCitation":"Hein, J., Normark, W.R., McIntyre, B., Lorenson, T., and Powell, C., 2006, Methanogenic calcite, 13C-depleted bivalve shells, and gas hydrate from a mud volcano offshore southern California: Geology, v. 34, no. 2, p. 109-112, https://doi.org/10.1130/G22098.1.","startPage":"109","endPage":"112","numberOfPages":"4","costCenters":[],"links":[{"id":211475,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/G22098.1"},{"id":238770,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"34","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5542e4b0c8380cd6d187","contributors":{"authors":[{"text":"Hein, J.R. 0000-0002-5321-899X","orcid":"https://orcid.org/0000-0002-5321-899X","contributorId":61429,"corporation":false,"usgs":true,"family":"Hein","given":"J.R.","affiliations":[],"preferred":false,"id":429295,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Normark, W. R.","contributorId":87137,"corporation":false,"usgs":true,"family":"Normark","given":"W.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":429297,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McIntyre, B.R.","contributorId":80485,"corporation":false,"usgs":true,"family":"McIntyre","given":"B.R.","email":"","affiliations":[],"preferred":false,"id":429296,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lorenson, T.D.","contributorId":7715,"corporation":false,"usgs":true,"family":"Lorenson","given":"T.D.","email":"","affiliations":[],"preferred":false,"id":429294,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Powell, C.L. II","contributorId":93520,"corporation":false,"usgs":true,"family":"Powell","given":"C.L.","suffix":"II","email":"","affiliations":[],"preferred":false,"id":429298,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70030643,"text":"70030643 - 2006 - Last glacial maximum and Holocene lake levels of Owens Lake, eastern California, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:14","indexId":"70030643","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3219,"text":"Quaternary Science Reviews","active":true,"publicationSubtype":{"id":10}},"title":"Last glacial maximum and Holocene lake levels of Owens Lake, eastern California, USA","docAbstract":"Stratigraphic investigations of fluvio-deltaic and lacustrine sediments exposed in stream cuts, quarry walls, and deep trenches east of the Sierra Nevada in Owens Valley near Lone Pine, California have enabled the reconstruction of pluvial Owens Lake level oscillations. Age control for these sediments is from 22 radiocarbon (14C) dates and the identification and stratigraphic correlation of a tephra, which when plotted as a function of age versus altitude, define numerous oscillations in the level of pluvial Owens Lake during the latest Pleistocene and early Holocene. We have constructed a lake-level altitude curve for the time interval ???27,000 cal yr BP to present that is based on the integration of this new stratigraphic analysis with published surface stratigraphic data and subsurface core data. Pluvial Owens Lake regressed from its latest Pleistocene highstands from ???27,000 to ???15,300 cal yr BP, as recorded by ???15 m of down cutting of the sill from the altitudes of ???1160 to 1145 m. By ???11,600 cal yr BP, the lake had dropped ???45 m from the 1145 m sill. This lowstand was followed by an early Holocene transgression that attained a highstand near 1135 m before dropping to 1120 m at 7860-7650 cal yr BP that had not been recognized in earlier studies. The lake then lowered another ???30 m to shallow and near desiccation levels between ???6850 and 4300 cal yr BP. Fluvial cut-and-fill relations north of Lone Pine and well-preserved shoreline features at ???1108 m indicate a minor lake-level rise after 4300 cal yr BP, followed by alkaline and shallow conditions during the latest Holocene. The new latest Quaternary lake-level record of pluvial Owens Lake offers insight to the hydrologic balance along the east side of the southern Sierra Nevada and will assist regional paleoclimatic models for the western Basin and Range. ?? 2005 Elsevier Ltd. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Quaternary Science Reviews","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.quascirev.2005.10.014","issn":"02773791","usgsCitation":"Bacon, S., Burke, R.M., Pezzopane, S., and Jayko, A.S., 2006, Last glacial maximum and Holocene lake levels of Owens Lake, eastern California, USA: Quaternary Science Reviews, v. 25, no. 11-12, p. 1264-1282, https://doi.org/10.1016/j.quascirev.2005.10.014.","startPage":"1264","endPage":"1282","numberOfPages":"19","costCenters":[],"links":[{"id":212078,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.quascirev.2005.10.014"},{"id":239496,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"25","issue":"11-12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a44bae4b0c8380cd66d22","contributors":{"authors":[{"text":"Bacon, S.N.","contributorId":41636,"corporation":false,"usgs":true,"family":"Bacon","given":"S.N.","email":"","affiliations":[],"preferred":false,"id":428007,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Burke, R. M.","contributorId":37793,"corporation":false,"usgs":true,"family":"Burke","given":"R.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":428006,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Pezzopane, S.K.","contributorId":21575,"corporation":false,"usgs":true,"family":"Pezzopane","given":"S.K.","affiliations":[],"preferred":false,"id":428005,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jayko, A. S. 0000-0002-7378-0330","orcid":"https://orcid.org/0000-0002-7378-0330","contributorId":18011,"corporation":false,"usgs":true,"family":"Jayko","given":"A.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":428004,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031167,"text":"70031167 - 2006 - An improved model for the calculation of CO2 solubility in aqueous solutions containing Na+, K+, Ca2+, Mg2+, Cl-, and SO42-","interactions":[],"lastModifiedDate":"2012-03-12T17:21:18","indexId":"70031167","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2662,"text":"Marine Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"An improved model for the calculation of CO2 solubility in aqueous solutions containing Na+, K+, Ca2+, Mg2+, Cl-, and SO42-","docAbstract":"An improved model is presented for the calculation of the solubility of carbon dioxide in aqueous solutions containing Na+, K+, Ca2+, Mg2+, Cl-, and SO42- in a wide temperature-pressure-ionic strength range (from 273 to 533 K, from 0 to 2000 bar, and from 0 to 4.5 molality of salts) with experimental accuracy. The improvements over the previous model [Duan, Z. and Sun, R., 2003. An improved model calculating CO2 solubility in pure water and aqueous NaCl solutions from 273 to 533K and from 0 to 2000 bar. Chemical Geology, 193: 257-271] include: (1) By developing a non-iterative equation to replace the original equation of state in the calculation of CO 2 fugacity coefficients, the new model is at least twenty times computationally faster and can be easily adapted to numerical reaction-flow simulator for such applications as CO2 sequestration and (2) By fitting to the new solubility data, the new model improved the accuracy below 288 K from 6% to about 3% of uncertainty but still retains the high accuracy of the original model above 288 K. We comprehensively evaluate all experimental CO2 solubility data. Compared with these data, this model not only reproduces all the reliable data used for the parameterization but also predicts the data that were not used in the parameterization. In order to facilitate the application to CO2 sequestration, we also predicted CO2 solubility in seawater at two-phase coexistence (vapor-liquid or liquid-liquid) and at three-phase coexistence (CO2 hydrate-liquid water-vapor CO2 [or liquid CO2]). The improved model is programmed and can be downloaded from the website http://www.geochem-model.org/programs.htm. ?? 2005 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Marine Chemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.marchem.2005.09.001","issn":"03044203","usgsCitation":"Duan, Z., Sun, R., Zhu, C., and Chou, I., 2006, An improved model for the calculation of CO2 solubility in aqueous solutions containing Na+, K+, Ca2+, Mg2+, Cl-, and SO42-: Marine Chemistry, v. 98, no. 2-4, p. 131-139, https://doi.org/10.1016/j.marchem.2005.09.001.","startPage":"131","endPage":"139","numberOfPages":"9","costCenters":[],"links":[{"id":211407,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.marchem.2005.09.001"},{"id":238690,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"98","issue":"2-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ea72e4b0c8380cd4887b","contributors":{"authors":[{"text":"Duan, Zhenhao","contributorId":71302,"corporation":false,"usgs":true,"family":"Duan","given":"Zhenhao","email":"","affiliations":[],"preferred":false,"id":430339,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sun, R.","contributorId":10137,"corporation":false,"usgs":true,"family":"Sun","given":"R.","affiliations":[],"preferred":false,"id":430337,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Zhu, Chen","contributorId":6244,"corporation":false,"usgs":true,"family":"Zhu","given":"Chen","email":"","affiliations":[],"preferred":false,"id":430336,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Chou, I.-M. 0000-0001-5233-6479","orcid":"https://orcid.org/0000-0001-5233-6479","contributorId":44283,"corporation":false,"usgs":true,"family":"Chou","given":"I.-M.","affiliations":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":430338,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70030670,"text":"70030670 - 2006 - Design and application of an electromagnetic vibrator seismic source","interactions":[],"lastModifiedDate":"2017-11-06T11:04:31","indexId":"70030670","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3928,"text":"Journal of Environmental & Engineering Geophysics","printIssn":"1083-1363","active":true,"publicationSubtype":{"id":10}},"title":"Design and application of an electromagnetic vibrator seismic source","docAbstract":"Vibrational seismic sources frequently provide a higher-frequency seismic wavelet (and therefore better resolution) than other sources, and can provide a superior signal-to-noise ratio in many settings. However, they are often prohibitively expensive for lower-budget shallow surveys. In order to address this problem, I designed and built a simple but effective vibrator source for about one thousand dollars. The \"EMvibe\" is an inexpensive electromagnetic vibrator that can be built with easy-to-machine parts and off-the-shelf electronics. It can repeatably produce pulse and frequency-sweep signals in the range of 5 to 650 Hz, and provides sufficient energy for recording at offsets up to 20 m. Analysis of frequency spectra show that the EMvibe provides a broader frequency range than the sledgehammer at offsets up to ??? 10 m in data collected at a site with soft sediments in the upper several meters. The EMvibe offers a high-resolution alternative to the sledgehammer for shallow surveys. It is well-suited to teaching applications, and to surveys requiring a precisely-repeatable source signature.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Environmental and Engineering Geophysics","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2113/JEEG11.1.9","issn":"10831363","usgsCitation":"Haines, S., 2006, Design and application of an electromagnetic vibrator seismic source: Journal of Environmental & Engineering Geophysics, v. 11, no. 1, p. 9-15, https://doi.org/10.2113/JEEG11.1.9.","startPage":"9","endPage":"15","numberOfPages":"7","costCenters":[],"links":[{"id":239323,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211938,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2113/JEEG11.1.9"}],"volume":"11","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ff33e4b0c8380cd4f089","contributors":{"authors":[{"text":"Haines, S.S. 0000-0003-2611-8165","orcid":"https://orcid.org/0000-0003-2611-8165","contributorId":33402,"corporation":false,"usgs":true,"family":"Haines","given":"S.S.","affiliations":[],"preferred":false,"id":428138,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70030885,"text":"70030885 - 2006 - Estimation of elastic moduli in a compressible Gibson half-space by inverting Rayleigh-wave phase velocity","interactions":[],"lastModifiedDate":"2012-03-12T17:21:03","indexId":"70030885","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3503,"text":"Surveys in Geophysics","active":true,"publicationSubtype":{"id":10}},"title":"Estimation of elastic moduli in a compressible Gibson half-space by inverting Rayleigh-wave phase velocity","docAbstract":"A Gibson half-space model (a non-layered Earth model) has the shear modulus varying linearly with depth in an inhomogeneous elastic half-space. In a half-space of sedimentary granular soil under a geostatic state of initial stress, the density and the Poisson's ratio do not vary considerably with depth. In such an Earth body, the dynamic shear modulus is the parameter that mainly affects the dispersion of propagating waves. We have estimated shear-wave velocities in the compressible Gibson half-space by inverting Rayleigh-wave phase velocities. An analytical dispersion law of Rayleigh-type waves in a compressible Gibson half-space is given in an algebraic form, which makes our inversion process extremely simple and fast. The convergence of the weighted damping solution is guaranteed through selection of the damping factor using the Levenberg-Marquardt method. Calculation efficiency is achieved by reconstructing a weighted damping solution using singular value decomposition techniques. The main advantage of this algorithm is that only three parameters define the compressible Gibson half-space model. Theoretically, to determine the model by the inversion, only three Rayleigh-wave phase velocities at different frequencies are required. This is useful in practice where Rayleigh-wave energy is only developed in a limited frequency range or at certain frequencies as data acquired at manmade structures such as dams and levees. Two real examples are presented and verified by borehole S-wave velocity measurements. The results of these real examples are also compared with the results of the layered-Earth model. ?? Springer 2006.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Surveys in Geophysics","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10712-005-7261-3","issn":"01693298","usgsCitation":"Xia, J., Xu, Y., Miller, R., and Chen, C., 2006, Estimation of elastic moduli in a compressible Gibson half-space by inverting Rayleigh-wave phase velocity: Surveys in Geophysics, v. 27, no. 1, p. 1-17, https://doi.org/10.1007/s10712-005-7261-3.","startPage":"1","endPage":"17","numberOfPages":"17","costCenters":[],"links":[{"id":211664,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10712-005-7261-3"},{"id":238998,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"27","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0b86e4b0c8380cd5276f","contributors":{"authors":[{"text":"Xia, J.","contributorId":63513,"corporation":false,"usgs":true,"family":"Xia","given":"J.","email":"","affiliations":[],"preferred":false,"id":429085,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Xu, Y.","contributorId":47816,"corporation":false,"usgs":true,"family":"Xu","given":"Y.","email":"","affiliations":[],"preferred":false,"id":429084,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Miller, R. D.","contributorId":92693,"corporation":false,"usgs":true,"family":"Miller","given":"R. D.","affiliations":[],"preferred":false,"id":429086,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Chen, C.","contributorId":98490,"corporation":false,"usgs":true,"family":"Chen","given":"C.","email":"","affiliations":[],"preferred":false,"id":429087,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70030684,"text":"70030684 - 2006 - Timing of late Holocene surface rupture of the Wairau Fault, Marlborough, New Zealand","interactions":[],"lastModifiedDate":"2013-02-23T21:40:03","indexId":"70030684","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2869,"text":"New Zealand Journal of Geology and Geophysics","active":true,"publicationSubtype":{"id":10}},"title":"Timing of late Holocene surface rupture of the Wairau Fault, Marlborough, New Zealand","docAbstract":"Three trenches excavated across the central portion of the right-lateral strike-slip Wairau Fault in South Island, New Zealand, exposed a complex set of fault strands that have displaced a sequence of late Holocene alluvial and colluvial deposits. Abundant charcoal fragments provide age control for various stratigraphic horizons dating back to c. 5610 yr ago. Faulting relations from the Wadsworth trench show that the most recent surface rupture event occurred at least 1290 yr and at most 2740 yr ago. Drowned trees in landslide-dammed Lake Chalice, in combination with charcoal from the base of an unfaulted colluvial wedge at Wadsworth trench, suggest a narrower time bracket for this event of 1811-2301 cal. yr BP. The penultimate faulting event occurred between c. 2370 and 3380 yr, and possibly near 2680 ?? 60 cal. yr BP, when data from both the Wadsworth and Dillon trenches are combined. Two older events have been recognised from Dillon trench but remain poorly dated. A probable elapsed time of at least 1811 yr since the last surface rupture, and an average slip rate estimate for the Wairau Fault of 3-5 mm/yr, suggests that at least 5.4 m and up to 11.5 m of elastic shear strain has accumulated since the last rupture. This is near to or greater than the single-event displacement estimates of 5-7 m. The average recurrence interval for surface rupture of the fault determined from the trench data is 1150-1400 yr. Although the uncertainties in the timing of faulting events and variability in inter-event times remain high, the time elapsed since the last event is in the order of 1-2 times the average recurrence interval, implying that the Wairau Fault is near the end of its interseismic period. ?? The Royal Society of New Zealand 2006.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"New Zealand Journal of Geology and Geophysics","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Taylor and Francis","doi":"10.1080/00288306.2006.9515156","issn":"00288306","usgsCitation":"Zachariasen, J., Berryman, K., Langridge, R., Prentice, C., Rymer, M., Stirling, M., and Villamor, P., 2006, Timing of late Holocene surface rupture of the Wairau Fault, Marlborough, New Zealand: New Zealand Journal of Geology and Geophysics, v. 49, no. 1, p. 159-174, https://doi.org/10.1080/00288306.2006.9515156.","startPage":"159","endPage":"174","numberOfPages":"16","costCenters":[],"links":[{"id":268056,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/00288306.2006.9515156"},{"id":239534,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"49","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb3f1e4b08c986b3260a1","contributors":{"authors":[{"text":"Zachariasen, J.","contributorId":80834,"corporation":false,"usgs":true,"family":"Zachariasen","given":"J.","affiliations":[],"preferred":false,"id":428210,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Berryman, K.","contributorId":101847,"corporation":false,"usgs":true,"family":"Berryman","given":"K.","email":"","affiliations":[],"preferred":false,"id":428213,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Langridge, Rob","contributorId":89695,"corporation":false,"usgs":true,"family":"Langridge","given":"Rob","email":"","affiliations":[],"preferred":false,"id":428212,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Prentice, C.","contributorId":33107,"corporation":false,"usgs":true,"family":"Prentice","given":"C.","email":"","affiliations":[],"preferred":false,"id":428208,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Rymer, M.","contributorId":73819,"corporation":false,"usgs":true,"family":"Rymer","given":"M.","affiliations":[],"preferred":false,"id":428209,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Stirling, M.","contributorId":26869,"corporation":false,"usgs":true,"family":"Stirling","given":"M.","email":"","affiliations":[],"preferred":false,"id":428207,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Villamor, P.","contributorId":81310,"corporation":false,"usgs":true,"family":"Villamor","given":"P.","affiliations":[],"preferred":false,"id":428211,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70030935,"text":"70030935 - 2006 - In situ study of mass transfer in aqueous solutions under high pressures via Raman spectroscopy: A new method for the determination of diffusion coefficients of methane in water near hydrate formation conditions","interactions":[],"lastModifiedDate":"2012-03-12T17:21:15","indexId":"70030935","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":847,"text":"Applied Spectroscopy","active":true,"publicationSubtype":{"id":10}},"title":"In situ study of mass transfer in aqueous solutions under high pressures via Raman spectroscopy: A new method for the determination of diffusion coefficients of methane in water near hydrate formation conditions","docAbstract":"A new method was developed for in situ study of the diffusive transfer of methane in aqueous solution under high pressures near hydrate formation conditions within an optical capillary cell. Time-dependent Raman spectra of the solution at several different spots along the one-dimensional diffusion path were collected and thus the varying composition profile of the solution was monitored. Diffusion coefficients were estimated by the least squares method based on the variations in methane concentration data in space and time in the cell. The measured diffusion coefficients of methane in water at the liquid (L)-vapor (V) stable region and L-V metastable region are close to previously reported values determined at lower pressure and similar temperature. This in situ monitoring method was demonstrated to be suitable for the study of mass transfer in aqueous solution under high pressure and at various temperature conditions and will be applied to the study of nucleation and dissolution kinetics of methane hydrate in a hydrate-water system where the interaction of methane and water would be more complicated than that presented here for the L-V metastable condition. ?? 2006 Society for Applied Spectroscopy.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Applied Spectroscopy","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1366/000370206776023278","issn":"00037028","usgsCitation":"Lu, W., Chou, I., Burruss, R., and Yang, M., 2006, In situ study of mass transfer in aqueous solutions under high pressures via Raman spectroscopy: A new method for the determination of diffusion coefficients of methane in water near hydrate formation conditions: Applied Spectroscopy, v. 60, no. 2, p. 122-129, https://doi.org/10.1366/000370206776023278.","startPage":"122","endPage":"129","numberOfPages":"8","costCenters":[],"links":[{"id":211446,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1366/000370206776023278"},{"id":238737,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"60","issue":"2","noUsgsAuthors":false,"publicationDate":"2006-02-01","publicationStatus":"PW","scienceBaseUri":"505a39aee4b0c8380cd619e5","contributors":{"authors":[{"text":"Lu, W.J.","contributorId":74195,"corporation":false,"usgs":true,"family":"Lu","given":"W.J.","email":"","affiliations":[],"preferred":false,"id":429291,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Chou, I.-M. 0000-0001-5233-6479","orcid":"https://orcid.org/0000-0001-5233-6479","contributorId":44283,"corporation":false,"usgs":true,"family":"Chou","given":"I.-M.","affiliations":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":429290,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Burruss, R.C. 0000-0001-6827-804X","orcid":"https://orcid.org/0000-0001-6827-804X","contributorId":99574,"corporation":false,"usgs":true,"family":"Burruss","given":"R.C.","affiliations":[],"preferred":false,"id":429292,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Yang, M.Z.","contributorId":101870,"corporation":false,"usgs":true,"family":"Yang","given":"M.Z.","email":"","affiliations":[],"preferred":false,"id":429293,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70030656,"text":"70030656 - 2006 - When landscaping goes bad: The incipient invasion of Mahonia bealei in the southeastern United States","interactions":[],"lastModifiedDate":"2018-01-12T12:15:47","indexId":"70030656","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1018,"text":"Biological Invasions","active":true,"publicationSubtype":{"id":10}},"title":"When landscaping goes bad: The incipient invasion of Mahonia bealei in the southeastern United States","docAbstract":"Woodlots are forest islands embedded within an urban matrix, and often represent the only natural areas remaining in suburban areas. Woodlots represent critical conservation areas for native plants, and are important habitat for wildlife in urban areas. Invasion by non-indigenous (NIS) plants can alter ecological structure and function, and may be especially severe in remnant forests where NIS propagule pressure is high. Woody shrubs in the Family Berberidaceae have been well documented as invaders of the forest-urban matrix in North America. Mahonia bealei (Berberidaceae) is a clonal shrub native to China, and is a popular ornamental in the Southeastern United States. Mahoni bealei is listed as \"present\" on some local and state floras, but almost nothing is known regarding its invasion potential in the United States. We sampled 15 woodlots in Clemson, South Carolina, to assess the invasion of M. bealei and other woody non-indigenous species (NIS). M. bealei invaded 87% of the woodlots surveyed and species richness of NIS on these woodlots varied from 5 to 14. Stepwise-multiple regression indicated that less canopy cover and older M. bealei predicted greater abundance of M. bealei , and that not all subdivisions were equally invaded (P < 0.0001; r 2 = 0.88). The impact of M. bealei on native flora and fauna may be considerable, and it is likely to continue to spread in the Southeastern United States. M. bealei should be recognized as an aggressive invader in the Southeastern United States, with the potential for negative impacts on native flora and fauna. ?? Springer 2006.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Biological Invasions","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10530-004-2896-4","issn":"13873547","usgsCitation":"Allen, C.R., Garmestani, A., LaBram, J., Peck, A., and Prevost, L., 2006, When landscaping goes bad: The incipient invasion of Mahonia bealei in the southeastern United States: Biological Invasions, v. 8, no. 2, p. 169-176, https://doi.org/10.1007/s10530-004-2896-4.","startPage":"169","endPage":"176","numberOfPages":"8","costCenters":[],"links":[{"id":239114,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211762,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10530-004-2896-4"}],"volume":"8","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bd053e4b08c986b32edc2","contributors":{"authors":[{"text":"Allen, Craig R. 0000-0001-8655-8272 allencr@usgs.gov","orcid":"https://orcid.org/0000-0001-8655-8272","contributorId":1979,"corporation":false,"usgs":true,"family":"Allen","given":"Craig","email":"allencr@usgs.gov","middleInitial":"R.","affiliations":[{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true},{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"preferred":true,"id":428059,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Garmestani, A.S.","contributorId":86882,"corporation":false,"usgs":true,"family":"Garmestani","given":"A.S.","email":"","affiliations":[],"preferred":false,"id":428058,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"LaBram, J.A.","contributorId":101081,"corporation":false,"usgs":true,"family":"LaBram","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":428060,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Peck, A.E.","contributorId":13432,"corporation":false,"usgs":true,"family":"Peck","given":"A.E.","email":"","affiliations":[],"preferred":false,"id":428056,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Prevost, L.B.","contributorId":20544,"corporation":false,"usgs":true,"family":"Prevost","given":"L.B.","email":"","affiliations":[],"preferred":false,"id":428057,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70030652,"text":"70030652 - 2006 - The vertical hydraulic conductivity of an aquitard at two spatial scales","interactions":[],"lastModifiedDate":"2012-03-12T17:21:14","indexId":"70030652","displayToPublicDate":"2006-01-01T00:00:00","publicationYear":"2006","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1861,"text":"Ground Water","active":true,"publicationSubtype":{"id":10}},"title":"The vertical hydraulic conductivity of an aquitard at two spatial scales","docAbstract":"Aquitards protect underlying aquifers from contaminants and limit recharge to those aquifers. Understanding the mechanisms and quantity of ground water flow across aquitards to underlying aquifers is essential for ground water planning and assessment. We present results of laboratory testing for shale hydraulic conductivities, a methodology for determining the vertical hydraulic conductivity (Kv) of aquitards at regional scales and demonstrate the importance of discrete flow pathways across aquitards. A regional shale aquitard in southeastern Wisconsin, the Maquoketa Formation, was studied to define the role that an aquitard plays in a regional ground water flow system. Calibration of a regional ground water flow model for southeastern Wisconsin using both predevelopment steady-state and transient targets suggested that the regional Kv of the Maquoketa Formation is 1.8 ?? 10 -11 m/s. The core-scale measurements of the Kv of the Maquoketa Formation range from 1.8 ?? 10-14 to 4.1 ?? 10-12 m/s. Flow through some additional pathways in the shale, potential fractures or open boreholes, can explain the apparent increase of the regional-scale Kv. Based on well logs, erosional windows or high-conductivity zones seem unlikely pathways. Fractures cutting through the entire thickness of the shale spaced 5 km apart with an aperture of 50 microns could provide enough flow across the aquitard to match that provided by an equivalent bulk Kv of 1.8 ?? 10-11 m/s. In a similar fashion, only 50 wells of 0.1 m radius open to aquifers above and below the shale and evenly spaced 10 km apart across southeastern Wisconsin can match the model Kv. Copyright ?? 2005 National Ground Water Association.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ground Water","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1745-6584.2005.00125.x","issn":"0017467X","usgsCitation":"Hart, D., Bradbury, K.R., and Feinstein, D.T., 2006, The vertical hydraulic conductivity of an aquitard at two spatial scales: Ground Water, v. 44, no. 2, p. 201-211, https://doi.org/10.1111/j.1745-6584.2005.00125.x.","startPage":"201","endPage":"211","numberOfPages":"11","costCenters":[],"links":[{"id":239602,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212161,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1745-6584.2005.00125.x"}],"volume":"44","issue":"2","noUsgsAuthors":false,"publicationDate":"2005-11-09","publicationStatus":"PW","scienceBaseUri":"505bb1bae4b08c986b3253c3","contributors":{"authors":[{"text":"Hart, D.J.","contributorId":92492,"corporation":false,"usgs":true,"family":"Hart","given":"D.J.","email":"","affiliations":[],"preferred":false,"id":428043,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bradbury, K. R.","contributorId":86070,"corporation":false,"usgs":true,"family":"Bradbury","given":"K.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":428042,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Feinstein, D. T.","contributorId":47328,"corporation":false,"usgs":true,"family":"Feinstein","given":"D.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":428041,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
]}