{"pageNumber":"942","pageRowStart":"23525","pageSize":"25","recordCount":40807,"records":[{"id":79614,"text":"ofr20061387 - 2007 - Status review of the Marbled Murrelet (Brachyramphus marmoratus) in Alaska and British Columbia","interactions":[],"lastModifiedDate":"2020-11-04T15:14:20.775367","indexId":"ofr20061387","displayToPublicDate":"2007-02-04T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2006-1387","displayTitle":"Status review of the Marbled Murrelet (<i>Brachyramphus marmoratus</i>) in Alaska and British Columbia","title":"Status review of the Marbled Murrelet (Brachyramphus marmoratus) in Alaska and British Columbia","docAbstract":"<p><span>The Marbled Murrelet (</span><i>Brachyramphus marmoratus</i><span>) is a small, diving seabird inhabiting inshore waters of the Northeastern Pacific Ocean. This species feeds on small, schooling fishes and zooplankton, and nests primarily on the moss-covered branches of large, old-growth conifers, and also, in some parts of its range, on the ground. We reviewed existing information on this species to evaluate its current status in the northern part of its range—Alaska (U.S.) and British Columbia (Canada). Within the southern part of its range (Washington, Oregon, and California, U.S.), the Marbled Murrelet was listed as a threatened species under the Endangered Species Act (ESA) in 1993, and the U.S. Fish and Wildlife Service (USFWS) needed information on the species throughout its range for ESA deliberations. We compiled published information on the conservation status, population biology, foraging ecology, population genetics, population status and trends, demography, marine and nesting habitat characteristics, threats, and ongoing conservation efforts for Marbled Murrelets in Alaska and British Columbia. We conducted a new genetic study using samples from a segment of the range that had not been included in previous studies (Washington, Oregon) and additional nuclear intron and microsatellite markers. We also analyzed available at-sea survey data from several locations for trend. To understand the reasonableness of the empirical trend data, we developed demographic models incorporating stochasticity to discern what population trends were possible by chance. The genetic studies substantially confirmed previous findings on population structure in the Marbled Murrelet. Our present work finds three populations: (1) one comprising birds in the central and western Aleutian Islands; (2) one comprising birds in central California; and (3)&nbsp;one comprising birds within the center of the range from the eastern Aleutians to northern California. Our knowledge of genetic structure within this central population is limited and it requires additional study. Compiling available abundance information, we estimated that in the recent past, Marbled Murrelets in Alaska numbered on the order of 1 million birds. We were unable to generate a similar estimate for historical population size in British Columbia. Using trend information from at-sea surveys spanning a wide geographic range in Alaska, murrelet numbers declined significantly at five of eight trend sites at annual rates of -5.4 to -12.7 percent since the early 1990s. Applying these rates of decline to the historical population estimate, the current murrelet population in Alaska is projected to be on the order of 270,000 birds. This represents an overall population decline of about 70 percent during the past 25 years. In British Columbia, available trend data indicate that murrelet populations there have experienced similar declines. We updated a recent (2002) population estimate for British Columbia, concluding that there are now between 54,000 and 92,000 murrelets in British Columbia. The rates of decline we observed are within, but at the high end of, a range of rates expected by chance. Given that declines were estimated for sites over essentially the entire northern range of the species, there is cause for concern about the species’ status. In their marine habitats, Marbled Murrelets overlap with salmon (Oncorhynchus sp.) gillnetting operations in British Columbia and in Alaska (especially in Prince William Sound and Southeast Alaska), and annual bycatch mortality is likely in the low thousands per year, although bycatch rates are difficult to measure. The species’ inshore distribution coincides with high levels of vessel traffic and makes them especially vulnerable to both chronic oil pollution and to catastrophic spills (e.g., the 1989&nbsp;</span><i>Exxon Valdez</i><span>&nbsp;oil spill [EVOS] in south-central Alaska, which is estimated to have killed 12,000 to 15,000 murrelets). In their forested nesting habitats, Marbled Murrelets have lost about 15 percent of their suitable nesting habitat in Southeast Alaska, and 33 to 49 percent in British Columbia, from industrial-scale logging within the past half century. Increased predation also may be a threat to murrelet populations, related to fragmentation and edge effects from logging and development, and recent population increases observed for some important murrelet predators, including Bald Eagles (</span><i>Haliaeetus leucocephalus</i><span>), Common Ravens (</span><i>Corvus corax</i><span>), and Steller’s Jays (</span><i>Cyanocitta stelleri</i><span>). Nesting habitat losses cannot explain the declines observed in areas where industrial logging has not occurred on a large scale (e.g., Prince William Sound) or at all (Glacier Bay). The apparent change in population size and rates of decline reported for the Marbled Murrelet are large, and we therefore considered alternative explanations and precedents for changes of similar magnitude in other marine wildlife populations in the Northeastern Pacific Ocean. The declines are likely real, and related to combined and cumulative effects from climate-related changes in the marine ecosystem (most likely the 1977 regime shift) and human activities (logging, gillnet bycatch, oil pollution). Much uncertainty about the decline could be alleviated by continuing to repeat boat surveys in Prince William Sound and lower Cook Inlet, and by repeating the boat survey of Southeast Alaska that was conducted in 1994. This survey used a statistically sound design and covered the region that has been and likely remains the center of the species’ abundance. Important questions remain to be addressed about methods for measuring population status and change, adult mortality (major sources, density dependence, seasonal concordance), and the movements of wintering populations.</span></p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20061387","usgsCitation":"Piatt, J.F., Kuletz, K., Burger, A., Hatch, S.A., Friesen, V.L., Birt, T., Arimitsu, M.L., Drew, G., Harding, A., and Bixler, K., 2007, Status review of the Marbled Murrelet (Brachyramphus marmoratus) in Alaska and British Columbia: U.S. Geological Survey Open-File Report 2006-1387, xiv, 258 p., https://doi.org/10.3133/ofr20061387.","productDescription":"xiv, 258 p.","numberOfPages":"274","costCenters":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"links":[{"id":194850,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":9237,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2006/1387/","linkFileType":{"id":5,"text":"html"}}],"country":"Canada, United States","state":"Alaska, British Columbia","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -124.98046874999999,\n              48.3416461723746\n            ],\n            [\n              -122.607421875,\n              49.095452162534826\n            ],\n            [\n              -128.583984375,\n              55.178867663281984\n            ],\n            [\n              -135.703125,\n              59.5343180010956\n            ],\n            [\n              -141.767578125,\n              60.80206374467983\n            ],\n            [\n              -151.259765625,\n              62.30879369102805\n            ],\n            [\n              -156.88476562499997,\n              59.0405546167585\n            ],\n            [\n              -168.57421875,\n              54.36775852406841\n            ],\n            [\n              -178.505859375,\n              52.16045455774706\n            ],\n            [\n              -177.45117187499997,\n              50.90303283111257\n            ],\n            [\n              -166.55273437499997,\n              52.802761415419674\n            ],\n            [\n              -152.666015625,\n              56.41390137600676\n            ],\n            [\n              -146.513671875,\n              59.355596110016315\n            ],\n            [\n              -141.064453125,\n              59.085738569819505\n            ],\n            [\n              -137.63671875,\n              57.040729838360875\n            ],\n            [\n              -133.505859375,\n              52.53627304145948\n            ],\n            [\n              -124.98046874999999,\n              48.3416461723746\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49dbe4b07f02db5e117a","contributors":{"authors":[{"text":"Piatt, John F. 0000-0002-4417-5748 jpiatt@usgs.gov","orcid":"https://orcid.org/0000-0002-4417-5748","contributorId":3025,"corporation":false,"usgs":true,"family":"Piatt","given":"John","email":"jpiatt@usgs.gov","middleInitial":"F.","affiliations":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":290380,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kuletz, K.J.","contributorId":98002,"corporation":false,"usgs":true,"family":"Kuletz","given":"K.J.","affiliations":[],"preferred":false,"id":290382,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Burger, A.E.","contributorId":56605,"corporation":false,"usgs":true,"family":"Burger","given":"A.E.","email":"","affiliations":[],"preferred":false,"id":290375,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hatch, Scott A. 0000-0002-0064-8187 shatch@usgs.gov","orcid":"https://orcid.org/0000-0002-0064-8187","contributorId":2625,"corporation":false,"usgs":true,"family":"Hatch","given":"Scott","email":"shatch@usgs.gov","middleInitial":"A.","affiliations":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"preferred":true,"id":290376,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Friesen, Vicki L.","contributorId":59407,"corporation":false,"usgs":false,"family":"Friesen","given":"Vicki","email":"","middleInitial":"L.","affiliations":[{"id":7029,"text":"Queen's University, Kingston, Ontario, Canada","active":true,"usgs":false}],"preferred":false,"id":290377,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Birt, T.P.","contributorId":82411,"corporation":false,"usgs":true,"family":"Birt","given":"T.P.","email":"","affiliations":[],"preferred":false,"id":290379,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Arimitsu, Mayumi L. 0000-0001-6982-2238 marimitsu@usgs.gov","orcid":"https://orcid.org/0000-0001-6982-2238","contributorId":140501,"corporation":false,"usgs":true,"family":"Arimitsu","given":"Mayumi","email":"marimitsu@usgs.gov","middleInitial":"L.","affiliations":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"preferred":true,"id":290373,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Drew, G.S.","contributorId":95415,"corporation":false,"usgs":true,"family":"Drew","given":"G.S.","email":"","affiliations":[],"preferred":false,"id":290381,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Harding, A.M.A.","contributorId":29088,"corporation":false,"usgs":true,"family":"Harding","given":"A.M.A.","email":"","affiliations":[],"preferred":false,"id":290374,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Bixler, K.S.","contributorId":72889,"corporation":false,"usgs":true,"family":"Bixler","given":"K.S.","email":"","affiliations":[],"preferred":false,"id":290378,"contributorType":{"id":1,"text":"Authors"},"rank":10}]}}
,{"id":70159343,"text":"70159343 - 2007 - The FORE-SCE model: a practical approach for projecting land cover change using scenario-based modeling","interactions":[],"lastModifiedDate":"2015-10-22T11:52:33","indexId":"70159343","displayToPublicDate":"2007-02-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2367,"text":"Journal of Land Use Science","active":true,"publicationSubtype":{"id":10}},"title":"The FORE-SCE model: a practical approach for projecting land cover change using scenario-based modeling","docAbstract":"<p><span>A wide variety of ecological applications require spatially explicit, historic, current, and projected land use and land cover data. The U.S. Land Cover Trends project is analyzing contemporary (1973&ndash;2000) land-cover change in the conterminous United States. The newly developed FORE-SCE model used Land Cover Trends data and theoretical, statistical, and deterministic modeling techniques to project future land cover change through 2020 for multiple plausible scenarios. Projected proportions of future land use were initially developed, and then sited on the lands with the highest potential for supporting that land use and land cover using a statistically based stochastic allocation procedure. Three scenarios of 2020 land cover were mapped for the western Great Plains in the US. The model provided realistic, high-resolution, scenario-based land-cover products suitable for multiple applications, including studies of climate and weather variability, carbon dynamics, and regional&nbsp;</span><a href=\"http://hydrology.sohl@usgs.gov/\" target=\"_blank\">hydrology.</a></p>","language":"English","publisher":"Taylor & Francis","doi":"10.1080/17474230701218202","usgsCitation":"Sohl, T.L., Sayler, K., Drummond, M.A., and Loveland, T., 2007, The FORE-SCE model: a practical approach for projecting land cover change using scenario-based modeling: Journal of Land Use Science, v. 2, no. 2, p. 103-126, https://doi.org/10.1080/17474230701218202.","productDescription":"24 p.","startPage":"103","endPage":"126","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":476920,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1080/17474230701218202","text":"Publisher Index Page"},{"id":310455,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"2","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"562a08f4e4b011227bf1fde7","contributors":{"authors":[{"text":"Sohl, Terry L. 0000-0002-9771-4231 sohl@usgs.gov","orcid":"https://orcid.org/0000-0002-9771-4231","contributorId":648,"corporation":false,"usgs":true,"family":"Sohl","given":"Terry","email":"sohl@usgs.gov","middleInitial":"L.","affiliations":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true},{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":true,"id":578094,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sayler, Kristi L. 0000-0003-2514-242X sayler@usgs.gov","orcid":"https://orcid.org/0000-0003-2514-242X","contributorId":2988,"corporation":false,"usgs":true,"family":"Sayler","given":"Kristi","email":"sayler@usgs.gov","middleInitial":"L.","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":true,"id":578095,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Drummond, Mark A. 0000-0001-7420-3503 madrummond@usgs.gov","orcid":"https://orcid.org/0000-0001-7420-3503","contributorId":3053,"corporation":false,"usgs":true,"family":"Drummond","given":"Mark","email":"madrummond@usgs.gov","middleInitial":"A.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":578096,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Loveland, Thomas R. 0000-0003-3114-6646 loveland@usgs.gov","orcid":"https://orcid.org/0000-0003-3114-6646","contributorId":3005,"corporation":false,"usgs":true,"family":"Loveland","given":"Thomas R.","email":"loveland@usgs.gov","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":false,"id":578097,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70158998,"text":"70158998 - 2007 - Geometric correction and digital elevation extraction using multiple MTI datasets","interactions":[],"lastModifiedDate":"2017-12-19T13:20:53","indexId":"70158998","displayToPublicDate":"2007-02-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3052,"text":"Photogrammetric Engineering and Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"Geometric correction and digital elevation extraction using multiple MTI datasets","docAbstract":"<p>Digital Elevation Models (DEMs) are traditionally acquired from a stereo pair of aerial photographs sequentially captured by an airborne metric camera. Standard DEM extraction techniques can be naturally extended to satellite imagery, but the particular characteristics of satellite imaging can cause difficulties. The spacecraft ephemeris with respect to the ground site during image collects is the most important factor in the elevation extraction process. When the angle of separation between the stereo images is small, the extraction process typically produces measurements with low accuracy, while a large angle of separation can cause an excessive number of erroneous points in the DEM from occlusion of ground areas.<span>&nbsp;</span><br /><br />The use of three or more images registered to the same ground area can potentially reduce these problems and improve the accuracy of the extracted DEM. The pointing capability of some sensors, such as the Multispectral Thermal Imager (MTI), allows for multiple collects of the same area from different perspectives. This functionality of MTI makes it a good candidate for the implementation of a DEM extraction algorithm using multiple images for improved accuracy. Evaluation of this capability and development of algorithms to geometrically model the MTI sensor and extract DEMs from multi-look MTI imagery are described in this paper. An RMS elevation error of 6.3-meters is achieved using 11 ground test points, while the MTI band has a 5-meter ground sample distance.</p>","language":"English","publisher":"American Society for Photogrammetry and Remote Sensing","doi":"10.14358/PERS.73.2.133","usgsCitation":"Mercier, J.A., Schowengerdt, R.A., Storey, J.C., and Smith, J.L., 2007, Geometric correction and digital elevation extraction using multiple MTI datasets: Photogrammetric Engineering and Remote Sensing, v. 73, no. 2, p. 133-142, https://doi.org/10.14358/PERS.73.2.133.","productDescription":"10 p.","startPage":"133","endPage":"142","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":476918,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.14358/pers.73.2.133","text":"Publisher Index Page"},{"id":309830,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"73","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"561cd9abe4b0cdb063e584a2","contributors":{"authors":[{"text":"Mercier, Jeffrey A.","contributorId":149176,"corporation":false,"usgs":false,"family":"Mercier","given":"Jeffrey","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":577210,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schowengerdt, Robert A.","contributorId":41191,"corporation":false,"usgs":true,"family":"Schowengerdt","given":"Robert","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":577211,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Storey, James C. 0000-0002-6664-7232 storey@usgs.gov","orcid":"https://orcid.org/0000-0002-6664-7232","contributorId":5333,"corporation":false,"usgs":true,"family":"Storey","given":"James","email":"storey@usgs.gov","middleInitial":"C.","affiliations":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true},{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":true,"id":577212,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Smith, Jody L.","contributorId":86356,"corporation":false,"usgs":true,"family":"Smith","given":"Jody","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":577213,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70171373,"text":"70171373 - 2007 - Growth rates of young-of-year shovelnose sturgeon in the Upper Missouri River","interactions":[],"lastModifiedDate":"2017-08-31T09:30:58","indexId":"70171373","displayToPublicDate":"2007-01-31T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2166,"text":"Journal of Applied Ichthyology","active":true,"publicationSubtype":{"id":10}},"title":"Growth rates of young-of-year shovelnose sturgeon in the Upper Missouri River","docAbstract":"<p><span>Information on growth during the larval and young-of-year life stages in natural river environments is generally lacking for most sturgeon species. In this study, methods for estimating ages and quantifying growth were developed for field-sampled larval and young-of-year shovelnose sturgeon&nbsp;<i>Scaphirhynchus platorynchus</i><span><span>&nbsp;</span>in the upper Missouri River. First, growth was assessed by partitioning samples of young-of-year shovelnose sturgeon into cohorts, and regressing weekly increases in cohort mean length on sampling date. This method quantified relative growth because ages of the cohorts were unknown. Cohort increases in mean length among sampling dates were positively related (P&nbsp;&lt;&nbsp;0.05,<span>&nbsp;</span></span><i>r</i><sup>2</sup><span>&nbsp;&gt;&nbsp;0.59 for all cohorts) to sampling date, and yielded growth rate estimates of 0.80–2.95&nbsp;mm&nbsp;day</span><sup>−1</sup><span><span>&nbsp;</span>(2003) and 0.44–2.28&nbsp;mm&nbsp;day</span><sup>−1</sup><span><span>&nbsp;</span>(2004). Highest growth rates occurred in the largest (and earliest spawned) cohorts. Second, a method was developed to estimate cohort hatch dates, thus age on date of sampling could be determined. This method included quantification of post-hatch length increases as a function of water temperature (growth capacity; mm per thermal unit, mm&nbsp;TU</span><sup>−1</sup><span>), and summation of mean daily water temperatures to achieve the required number of thermal units that corresponded to post-hatch lengths of shovelnose sturgeon on sampling dates. For six of seven cohorts of shovelnose sturgeon analyzed, linear growth models (</span><i>r</i><sup>2</sup><span>&nbsp;≥&nbsp;0.65, P&nbsp;&lt;&nbsp;0.0001) or Gompertz growth models (</span><i>r</i><sup>2</sup><span>&nbsp;≥&nbsp;0.83, P&nbsp;&lt;&nbsp;0.0001) quantified length-at-age from hatch through 55&nbsp;days post-hatch (98–100&nbsp;mm). Comparisons of length-at-age derived from the growth models indicated that length-at-age was greater for the earlier-hatched cohorts than later-hatched cohorts. Estimated hatch dates for different cohorts were corroborated based on the dates that newly-hatched larval shovelnose sturgeon were sampled in the drift. These results provide the first quantification of growth dynamics for field-sampled age-0 shovelnose sturgeon in a natural river environment, and provide an accurate method for estimating age of wild-caught individuals. Methods of age determination used in this study have applications to sturgeons in other regions, but require additional testing and validation.</span></span></p>","language":"English","publisher":"Wiley","doi":"10.1111/j.1439-0426.2006.00821.x","usgsCitation":"Braaten, P., and Fuller, D., 2007, Growth rates of young-of-year shovelnose sturgeon in the Upper Missouri River: Journal of Applied Ichthyology, v. 23, no. 4, p. 506-515, https://doi.org/10.1111/j.1439-0426.2006.00821.x.","productDescription":"10 p.","startPage":"506","endPage":"515","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"links":[{"id":476921,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1439-0426.2006.00821.x","text":"Publisher Index Page"},{"id":321844,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"North Dakota","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -104.03640747070312,\n              48.0165684107673\n            ],\n            [\n              -104.03366088867188,\n              47.97153658265933\n            ],\n            [\n              -103.89907836914062,\n              47.94118687759183\n            ],\n            [\n              -103.72604370117186,\n              48.005543841616216\n            ],\n            [\n              -103.67385864257812,\n              48.085418575511994\n            ],\n            [\n              -103.72467041015625,\n              48.11935075227587\n            ],\n            [\n              -103.75900268554688,\n              48.090922612296744\n            ],\n            [\n              -103.74252319335938,\n              48.057889555610984\n            ],\n            [\n              -103.7933349609375,\n              48.066149807925314\n            ],\n            [\n              -103.81942749023436,\n              48.04411952285125\n            ],\n            [\n              -103.81668090820312,\n              48.00646264573117\n            ],\n            [\n              -103.89083862304688,\n              47.983487632528984\n            ],\n            [\n              -103.96087646484375,\n              47.99727386804474\n            ],\n            [\n              -104.01031494140625,\n              48.001868461482424\n            ],\n            [\n              -104.03640747070312,\n              48.0165684107673\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"23","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"57496fafe4b07e28b665cc67","contributors":{"authors":[{"text":"Braaten, P. J. pbraaten@usgs.gov","contributorId":2724,"corporation":false,"usgs":true,"family":"Braaten","given":"P. J.","email":"pbraaten@usgs.gov","affiliations":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"preferred":false,"id":630767,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fuller, D.B.","contributorId":74116,"corporation":false,"usgs":false,"family":"Fuller","given":"D.B.","email":"","affiliations":[{"id":5099,"text":"Montana Department of Fish, Wildlife, and Parks","active":true,"usgs":false}],"preferred":false,"id":630768,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70189158,"text":"70189158 - 2007 - Model calibration and issues related to validation, sensitivity analysis, post-audit, uncertainty evaluation and assessment of prediction data needs","interactions":[],"lastModifiedDate":"2018-04-02T15:35:06","indexId":"70189158","displayToPublicDate":"2007-01-31T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Model calibration and issues related to validation, sensitivity analysis, post-audit, uncertainty evaluation and assessment of prediction data needs","docAbstract":"<p><span>When simulating natural and engineered groundwater flow and transport systems, one objective is to produce a model that accurately represents important aspects of the true system. However, using direct measurements of system characteristics, such as hydraulic conductivity, to construct a model often produces simulated values that poorly match observations of the system state, such as hydraulic heads, flows and concentrations (for example,&nbsp;</span><span class=\"CitationRef\"><a href=\"https://link.springer.com/chapter/10.1007%2F978-1-4020-5729-8_9#CR10\" data-mce-href=\"https://link.springer.com/chapter/10.1007%2F978-1-4020-5729-8_9#CR10\">Barth et al., 2001</a></span><span>). This occurs because of inaccuracies in the direct measurements and because the measurements commonly characterize system properties at different scales from that of the model aspect to which they are applied. In these circumstances, the conservation of mass equations represented by flow and transport models can be used to test the applicability of the direct measurements, such as by comparing model simulated values to the system state observations. This comparison leads to calibrating the model, by adjusting the model construction and the system properties as represented by model parameter values, so that the model produces simulated values that reasonably match the observations.</span></p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Groundwater: Resource Evaluation, Augmentation, Contamination, Restoration, Modeling and Management","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English ","publisher":"Springer Netherlands","doi":"10.1007/978-1-4020-5729-8_9","usgsCitation":"Tiedeman, C.R., and Hill, M.C., 2007, Model calibration and issues related to validation, sensitivity analysis, post-audit, uncertainty evaluation and assessment of prediction data needs, chap. <i>of</i> Groundwater: Resource Evaluation, Augmentation, Contamination, Restoration, Modeling and Management, p. 237-282, https://doi.org/10.1007/978-1-4020-5729-8_9.","productDescription":"46 p. ","startPage":"237","endPage":"282","costCenters":[{"id":493,"text":"Office of Ground Water","active":true,"usgs":true}],"links":[{"id":343284,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"595ca915e4b0d1f9f054ca18","contributors":{"authors":[{"text":"Tiedeman, Claire R. 0000-0002-0128-3685 tiedeman@usgs.gov","orcid":"https://orcid.org/0000-0002-0128-3685","contributorId":196777,"corporation":false,"usgs":true,"family":"Tiedeman","given":"Claire","email":"tiedeman@usgs.gov","middleInitial":"R.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":703267,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hill, Mary C. mchill@usgs.gov","contributorId":974,"corporation":false,"usgs":true,"family":"Hill","given":"Mary","email":"mchill@usgs.gov","middleInitial":"C.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":703268,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":79603,"text":"ofr20071023 - 2007 - Summary of Survival Data from Juvenile Coho Salmon in the Klamath River, Northern California, 2006","interactions":[],"lastModifiedDate":"2012-02-02T00:14:20","indexId":"ofr20071023","displayToPublicDate":"2007-01-30T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-1023","title":"Summary of Survival Data from Juvenile Coho Salmon in the Klamath River, Northern California, 2006","docAbstract":"Little is known about the survival of ESA-listed juvenile coho salmon during their seaward migration in the lower Klamath River. In 2006, the Bureau of Reclamation funded a study to estimate the survival of radio-tagged juvenile coho salmon in the Klamath River downstream of Iron Gate Dam. A series of models were evaluated to determine if survival varied between hatchery and wild fish and among several river reaches between the dam river kilometer 33, a total distance of 276 kilometers. The results from 2006, the first year of study, indicated little support for differences in survival between hatchery and wild fish and lower survival in the most upstream reach than in those farther downstream. This document is a brief summary of survival results to date.","language":"ENGLISH","doi":"10.3133/ofr20071023","collaboration":"Prepared in cooperation with the Bureau of Reclamation","usgsCitation":"Beeman, J.W., 2007, Summary of Survival Data from Juvenile Coho Salmon in the Klamath River, Northern California, 2006: U.S. Geological Survey Open-File Report 2007-1023, iv, 6 p., https://doi.org/10.3133/ofr20071023.","productDescription":"iv, 6 p.","numberOfPages":"10","temporalStart":"2006-01-01","temporalEnd":"2006-12-31","costCenters":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"links":[{"id":194644,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":9225,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2007/1023/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b00e4b07f02db6983d3","contributors":{"authors":[{"text":"Beeman, John W. jbeeman@usgs.gov","contributorId":2646,"corporation":false,"usgs":true,"family":"Beeman","given":"John","email":"jbeeman@usgs.gov","middleInitial":"W.","affiliations":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"preferred":true,"id":290340,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":79600,"text":"sir20065316 - 2007 - Geostatistical Modeling of Sediment Abundance in a Heterogeneous Basalt Aquifer at the Idaho National Laboratory, Idaho","interactions":[],"lastModifiedDate":"2012-03-08T17:16:19","indexId":"sir20065316","displayToPublicDate":"2007-01-29T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2006-5316","title":"Geostatistical Modeling of Sediment Abundance in a Heterogeneous Basalt Aquifer at the Idaho National Laboratory, Idaho","docAbstract":"The spatial distribution of sediment in the eastern Snake River Plain aquifer was evaluated and modeled to improve the parameterization of hydraulic conductivity (K) for a subregional-scale ground-water flow model being developed by the U.S. Geological Survey. The aquifer is hosted within a layered series of permeable basalts within which intercalated beds of fine-grained sediment constitute local confining units. These sediments have K values as much as six orders of magnitude lower than the most permeable basalt, and previous flow-model calibrations have shown that hydraulic conductivity is sensitive to the proportion of intercalated sediment.\r\n\r\nStratigraphic data in the form of sediment thicknesses from 333 boreholes in and around the Idaho National Laboratory were evaluated as grouped subsets of lithologic units (composite units) corresponding to their relative time-stratigraphic position. The results indicate that median sediment abundances of the stratigraphic units below the water table are statistically invariant (stationary) in a spatial sense and provide evidence of stationarity across geologic time, as well. Based on these results, the borehole data were kriged as two-dimensional spatial data sets representing the sediment content of the layers that discretize the ground-water flow model in the uppermost 300 feet of the aquifer.\r\n\r\nMultiple indicator kriging (mIK) was used to model the geographic distribution of median sediment abundance within each layer by defining the local cumulative frequency distribution (CFD) of sediment via indicator variograms defined at multiple thresholds. The mIK approach is superior to ordinary kriging because it provides a statistically best estimate of sediment abundance (the local median) drawn from the distribution of local borehole data, independent of any assumption of normality. A methodology is proposed for delineating and constraining the assignment of hydraulic conductivity zones for parameter estimation, based on the locally estimated CFDs and relative kriging uncertainty. A kriging-based methodology improves the spatial resolution of hydraulic property zones that can be considered during parameter estimation and should improve calibration performance and sensitivity by more accurately reflecting the nuances of sediment distribution within the aquifer.\r\n\r\n","language":"ENGLISH","doi":"10.3133/sir20065316","collaboration":"Prepared in cooperation with the U.S. Department of Energy","usgsCitation":"Welhan, J.A., Farabaugh, R.L., Merrick, M.J., and Anderson, S.R., 2007, Geostatistical Modeling of Sediment Abundance in a Heterogeneous Basalt Aquifer at the Idaho National Laboratory, Idaho: U.S. Geological Survey Scientific Investigations Report 2006-5316, vi, 32 p., https://doi.org/10.3133/sir20065316.","productDescription":"vi, 32 p.","numberOfPages":"38","costCenters":[{"id":343,"text":"Idaho Water Science Center","active":true,"usgs":true}],"links":[{"id":192529,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":9221,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2006/5316/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac7e4b07f02db67b3a0","contributors":{"authors":[{"text":"Welhan, John A.","contributorId":12128,"corporation":false,"usgs":true,"family":"Welhan","given":"John","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":290333,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Farabaugh, Renee L.","contributorId":92361,"corporation":false,"usgs":true,"family":"Farabaugh","given":"Renee","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":290335,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Merrick, Melissa J.","contributorId":80368,"corporation":false,"usgs":true,"family":"Merrick","given":"Melissa","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":290334,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Anderson, Steven R.","contributorId":6532,"corporation":false,"usgs":true,"family":"Anderson","given":"Steven","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":290332,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70068817,"text":"ofr20071047SRP010 - 2007 - Holocene oceanographic and climatic variability of the Vega Drift deduced through foraminiferal interpretation","interactions":[],"lastModifiedDate":"2014-01-13T13:42:59","indexId":"ofr20071047SRP010","displayToPublicDate":"2007-01-23T13:34:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-1047-SRP-010","title":"Holocene oceanographic and climatic variability of the Vega Drift deduced through foraminiferal interpretation","docAbstract":"A sediment sequence recovered from the Vega Drift, Antarctica was analyzed for benthic foraminifera to \ndetermine Holocene oceanographic and climatic variability of the northern Antarctic Peninsula margin. Core \nNBP0003-JPC38, collected during cruise 00-03 of the R.V. Nathaniel B. Palmer recovered 20.53 meters of Holocene \nglacio-marine sediments. Samples were collected every 4 cm for foraminiferal analyses. The data were analyzed using \nprincipal component and cluster analyses. Results of these analyses show significant stratigraphic changes in the \nbenthic foraminiferal record of the Vega Drift. \nThree assemblages characterize the core, including the Miliammina arenacea, Textulariawiesneri, and Stainforthia\nfusiformis assemblages. Most agglutinated forms tend to decrease downcore, and comparisons to modern analogues \nimply post-depositional disintegration, while calcareous taxa indicate non-corrosive bottom waters. The lower to \nmiddle Holocene Vega Drift sediments are characterized by the calcareous S. fusiformis assemblage and glacial plume \nsediments. This assemblage is characterized by calcareous forms including Globocassidulina biora, G. subglobosa, and \nNonionella iridea. The planktic species Neogloboquadrina pachyderma is associated with the S. fusiformis assemblage. \nThe S. fusiformis assemblage is faunally similar to assemblages described in fjords of the western Antarctic Peninsula \nand indicates non-corrosive bottom water. Sediments of the mid to upper Holocene interval are characterized by the T. \nwiesneri and M. arenacea assemblages and indicate the presence of Hyper Saline Shelf Water. These assemblages are \nsimilar to modern assemblages directly to the south in the Prince Gustav Channel. The upper Holocene is marked by \nseveral small intervals with taxonomic characteristics similar to the S. fusiformis assemblage, indicating periodic \nintroduction of non-corrosive bottom water to the Vega Drift","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP010","usgsCitation":"Szymcek, P., Ishman, S.E., Domack, E.W., and Leventer, A., 2007, Holocene oceanographic and climatic variability of the Vega Drift deduced through foraminiferal interpretation: U.S. Geological Survey Open-File Report 2007-1047-SRP-010, Text: 4 p.; Plate: 36 p., https://doi.org/10.3133/ofr20071047SRP010.","productDescription":"Text: 4 p.; Plate: 36 p.","additionalOnlineFiles":"Y","costCenters":[],"links":[{"id":280898,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP010.JPG"},{"id":280896,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp010/of2007-1047srp010_text.pdf"},{"id":280897,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp010/of2007-1047srp010_plate1.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd60b2e4b0b290850fd180","contributors":{"authors":[{"text":"Szymcek, Phillip","contributorId":53693,"corporation":false,"usgs":true,"family":"Szymcek","given":"Phillip","email":"","affiliations":[],"preferred":false,"id":488147,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ishman, Scott E.","contributorId":102468,"corporation":false,"usgs":true,"family":"Ishman","given":"Scott","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":488149,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Domack, Eugene W.","contributorId":27783,"corporation":false,"usgs":true,"family":"Domack","given":"Eugene","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":488146,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Leventer, Amy","contributorId":80580,"corporation":false,"usgs":true,"family":"Leventer","given":"Amy","email":"","affiliations":[],"preferred":false,"id":488148,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70068782,"text":"ofr20071047SRP007 - 2007 - Sm-Nd and U-Pb isotopic constraints for crustal evolution during Late Neoproterozic from rocks of the Schirmacher Oasis, East Antarctica: geodynamic development coeval with the East African Orogeny","interactions":[],"lastModifiedDate":"2014-01-13T12:56:23","indexId":"ofr20071047SRP007","displayToPublicDate":"2007-01-23T12:45:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-1047-SRP-007","title":"Sm-Nd and U-Pb isotopic constraints for crustal evolution during Late Neoproterozic from rocks of the Schirmacher Oasis, East Antarctica: geodynamic development coeval with the East African Orogeny","docAbstract":"Recent post-750 Ma continental reconstructions constrain models for East African Orogeny formation and \nalso the scattered remnants of ~640 Ma granulites, whose genesis is controversial. One such Neoproterozoic granulite \nbelt is the Schirmacher Oasis in East Antarctica, isolated from the distinctly younger Pan-African orogen to the south in \nthe central Droning Maud Land. To ascertain the duration of granulite-facies events in these remnants, garnet Sm-Nd \nand monazite and titanite U-Pb IDTIMS geochronology was carried out on a range of metamorphic rocks. Garnet \nformation ages from a websterite enclave and gabbro were 660±48 Ma and 587±9 Ma respectively, and those from Stype granites were 598±4 Ma and 577±4 Ma. Monazites from metapelite and metaquartzite yielded lower intercept UPb ages of 629±3 Ma and 639±5 Ma, respectively. U-Pb titanite age from calcsilicate gneiss was 580±5 Ma. These \nindicate peak metamorphism to have occurred between 640 and 630 Ma, followed by near isobaric cooling to ~580 Ma. \nThough an origin as an exotic terrane from the East African Orogen cannot be discounted, from the present data there is \na greater likelihood that Mesoproterozoic microplate collision between Maud orogen and a northerly Lurio-Nampula \nblock resulted in formation of these granulite belt(s).","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP007","usgsCitation":"Ravikant, V., Laux, J., and Pimentel, M., 2007, Sm-Nd and U-Pb isotopic constraints for crustal evolution during Late Neoproterozic from rocks of the Schirmacher Oasis, East Antarctica: geodynamic development coeval with the East African Orogeny: U.S. Geological Survey Open-File Report 2007-1047-SRP-007, 5 p., https://doi.org/10.3133/ofr20071047SRP007.","productDescription":"5 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":280882,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP007.JPG"},{"id":280881,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp007/of2007-1047srp007.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd7312e4b0b29085108b87","contributors":{"authors":[{"text":"Ravikant, V.","contributorId":6367,"corporation":false,"usgs":true,"family":"Ravikant","given":"V.","email":"","affiliations":[],"preferred":false,"id":488126,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Laux, J.H.","contributorId":79013,"corporation":false,"usgs":true,"family":"Laux","given":"J.H.","email":"","affiliations":[],"preferred":false,"id":488127,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Pimentel, M.M.","contributorId":99460,"corporation":false,"usgs":true,"family":"Pimentel","given":"M.M.","email":"","affiliations":[],"preferred":false,"id":488128,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70207960,"text":"70207960 - 2007 - Surface-exposure ages of Front Range moraines that may have formed during the Younger Dryas, 8.2 cal ka, and Little Ice Age events","interactions":[],"lastModifiedDate":"2020-01-21T12:13:49","indexId":"70207960","displayToPublicDate":"2007-01-21T12:04:24","publicationYear":"2007","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":"Surface-exposure ages of Front Range moraines that may have formed during the Younger Dryas, 8.2 cal ka, and Little Ice Age events","docAbstract":"<p><span>Surface-exposure (</span><sup>10</sup><span>Be) ages have been obtained on boulders from three post-Pinedale&nbsp;<a title=\"Learn more about Glacial Drift from ScienceDirect's AI-generated Topic Pages\" href=\"https://www.sciencedirect.com/topics/earth-and-planetary-sciences/glacial-drift\" data-mce-href=\"https://www.sciencedirect.com/topics/earth-and-planetary-sciences/glacial-drift\">end-moraine</a>&nbsp;complexes in the Front Range, Colorado. Boulder rounding appears related to the cirque-to-moraine transport distance at each site with subrounded boulders being typical of the 2-km-long Chicago Lakes Glacier, subangular boulders being typical of the 1-km-long Butler Gulch Glacier, and angular boulders being typical of the few-hundred-m-long Isabelle Glacier. Surface-exposure ages of angular boulders from the Isabelle Glacier moraine, which formed during the&nbsp;<a title=\"Learn more about Little Ice Age from ScienceDirect's AI-generated Topic Pages\" href=\"https://www.sciencedirect.com/topics/earth-and-planetary-sciences/little-ice-age\" data-mce-href=\"https://www.sciencedirect.com/topics/earth-and-planetary-sciences/little-ice-age\">Little Ice Age</a>&nbsp;(LIA) according to previous lichenometric dating, indicate cosmogenic inheritance values ranging from 0 to ∼3.0&nbsp;</span><sup>10</sup><span>Be</span><span>&nbsp;</span><span>ka.</span><a class=\"workspace-trigger\" name=\"bfn1\" href=\"https://www.sciencedirect.com/science/article/pii/S0277379107000650?via%3Dihub#fn1\" data-mce-href=\"https://www.sciencedirect.com/science/article/pii/S0277379107000650?via%3Dihub#fn1\"><sup>1</sup></a><span>&nbsp;Subangular boulders from the Butler Gulch end moraine yielded surface-exposure ages ranging from 5 to 10.2&nbsp;</span><sup>10</sup><span>Be</span><span>&nbsp;</span><span>ka. We suggest that this moraine was deposited during the 8.2</span><span>&nbsp;</span><span>cal</span><span>&nbsp;</span><span>ka event, which has been associated with&nbsp;<a title=\"Learn more about Outburst from ScienceDirect's AI-generated Topic Pages\" href=\"https://www.sciencedirect.com/topics/earth-and-planetary-sciences/outburst\" data-mce-href=\"https://www.sciencedirect.com/topics/earth-and-planetary-sciences/outburst\">outburst</a>&nbsp;floods from Lake Agassiz and Lake Ojibway, and that the large age range associated with the Butler Gulch end moraine is caused by cosmogenic shielding of and(or)&nbsp;<a title=\"Learn more about Spalling from ScienceDirect's AI-generated Topic Pages\" href=\"https://www.sciencedirect.com/topics/earth-and-planetary-sciences/spalling\" data-mce-href=\"https://www.sciencedirect.com/topics/earth-and-planetary-sciences/spalling\">spalling</a>&nbsp;from boulders that have ages in the younger part of the range and by cosmogenic inheritance in boulders that have ages in the older part of the range. The surface-exposure ages of eight of nine subrounded boulders from the Chicago Lakes area fall within the 13.0–11.7&nbsp;</span><sup>10</sup><span>Be</span><span>&nbsp;</span><span>ka age range, and appear to have been deposited during the&nbsp;<a title=\"Learn more about Younger Dryas from ScienceDirect's AI-generated Topic Pages\" href=\"https://www.sciencedirect.com/topics/earth-and-planetary-sciences/younger-dryas\" data-mce-href=\"https://www.sciencedirect.com/topics/earth-and-planetary-sciences/younger-dryas\">Younger Dryas</a>&nbsp;interval. The general lack of inheritance in the eight samples probably stems from the fact that only a few thousand years intervened between the retreat of the Pinedale glacier and the advance of the Chicago Lakes glacier; in addition,&nbsp;<a title=\"Learn more about Bedrock from ScienceDirect's AI-generated Topic Pages\" href=\"https://www.sciencedirect.com/topics/earth-and-planetary-sciences/bedrock\" data-mce-href=\"https://www.sciencedirect.com/topics/earth-and-planetary-sciences/bedrock\">bedrock</a>&nbsp;in the Chicago Lakes&nbsp;<a title=\"Learn more about Cirque from ScienceDirect's AI-generated Topic Pages\" href=\"https://www.sciencedirect.com/topics/earth-and-planetary-sciences/cirque\" data-mce-href=\"https://www.sciencedirect.com/topics/earth-and-planetary-sciences/cirque\">cirque</a>&nbsp;area may have remained covered with snow and ice during that interval, thus partially shielding the bedrock from cosmogenic radiation.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.quascirev.2007.02.015","usgsCitation":"Benson, L., Madole, R.F., Kubik, P., and McDonald, R.R., 2007, Surface-exposure ages of Front Range moraines that may have formed during the Younger Dryas, 8.2 cal ka, and Little Ice Age events: Quaternary Science Reviews, v. 26, no. 11-12, p. 1638-1649, https://doi.org/10.1016/j.quascirev.2007.02.015.","productDescription":"12 p.","startPage":"1638","endPage":"1649","costCenters":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true},{"id":37778,"text":"WMA - Integrated Modeling and Prediction Division","active":true,"usgs":true}],"links":[{"id":371415,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Colorado","otherGeospatial":"Buffalo Pass, La Poudre Pass, Sky Pond, Blue Lake, Isabelle Glacier, Caribou Lake, Arapaho Pass, Fourth of July valley, Butler Gulch, and Chicago Lakes.","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -107.68798828125,\n              38.51378825951165\n            ],\n            [\n              -104.2822265625,\n              38.51378825951165\n            ],\n            [\n              -104.2822265625,\n              40.697299008636755\n            ],\n            [\n              -107.68798828125,\n              40.697299008636755\n            ],\n            [\n              -107.68798828125,\n              38.51378825951165\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"26","issue":"11-12","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Benson, Larry","contributorId":13531,"corporation":false,"usgs":true,"family":"Benson","given":"Larry","affiliations":[],"preferred":false,"id":779916,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Madole, Richard F. 0000-0002-9081-570X madole@usgs.gov","orcid":"https://orcid.org/0000-0002-9081-570X","contributorId":1340,"corporation":false,"usgs":true,"family":"Madole","given":"Richard","email":"madole@usgs.gov","middleInitial":"F.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":779917,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kubik, P.","contributorId":92047,"corporation":false,"usgs":true,"family":"Kubik","given":"P.","email":"","affiliations":[],"preferred":false,"id":779918,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"McDonald, Richard R. 0000-0002-0703-0638 rmcd@usgs.gov","orcid":"https://orcid.org/0000-0002-0703-0638","contributorId":2428,"corporation":false,"usgs":true,"family":"McDonald","given":"Richard","email":"rmcd@usgs.gov","middleInitial":"R.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":37778,"text":"WMA - Integrated Modeling and Prediction Division","active":true,"usgs":true}],"preferred":true,"id":779919,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70074344,"text":"ofr20071047SRP022 - 2007 - Lithospheric structure across the Transantarctic Mountains constrained by an analysis of gravity and thermal structure","interactions":[],"lastModifiedDate":"2014-01-29T11:50:41","indexId":"ofr20071047SRP022","displayToPublicDate":"2007-01-18T11:14:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-1047-SRP-022","title":"Lithospheric structure across the Transantarctic Mountains constrained by an analysis of gravity and thermal structure","docAbstract":"The Transantarctic Mountains demarcate the boundary between the highly extended lithosphere of the West\nAntarctic Rift System and the Proterozoic East Antarctic Craton. Although the last stage of relief development was in\nthe Eocene, the TAM retain peak elevations in excess of 4500 m. This combination of old age and high relief are\ndifficult to reconcile, and the mechanism(s) responsible for uplift and support of this mountain range remain elusive and\ncontroversial. Recent seismic studies provide key constraints on the crustal structure. Here we constrain the lithospheric\nstructure across this boundary by forward modeling of the gravity based on a density structure that reflects the thermal\nstructure. Our results show that the observed very-long wavelength (>500km) gravity anomaly can be modeled by a\nWest Antarctic lithosphere ~60 km thick, and an East Antarctic lithosphere ~250 km thick. In addition, the gravity\nanomaly associated with the TAM can be modeled by including the thermal effects of heat producing elements\nconcentrated in the crust.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP022","usgsCitation":"Huerta, A.D., 2007, Lithospheric structure across the Transantarctic Mountains constrained by an analysis of gravity and thermal structure: U.S. Geological Survey Open-File Report 2007-1047-SRP-022, 4 p., https://doi.org/10.3133/ofr20071047SRP022.","productDescription":"4 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":281653,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP022.png"},{"id":281652,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp022/of2007-1047srp022.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 180.0,-90.0 ], [ 180.0,-60.0 ], [ -180.0,-60.0 ], [ -180.0,-90.0 ], [ 180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd64cfe4b0b290850ffb0d","contributors":{"authors":[{"text":"Huerta, Audrey D.","contributorId":72300,"corporation":false,"usgs":true,"family":"Huerta","given":"Audrey","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":489536,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70065939,"text":"ofr20071047SRP001 - 2007 - Advances through collaboration: sharing seismic reflection data via the Antarctic Seismic Data Library System for Cooperative Research (SDLS)","interactions":[],"lastModifiedDate":"2014-01-07T14:09:02","indexId":"ofr20071047SRP001","displayToPublicDate":"2007-01-17T13:44:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-1047-SRP-001","title":"Advances through collaboration: sharing seismic reflection data via the Antarctic Seismic Data Library System for Cooperative Research (SDLS)","docAbstract":"The Antarctic Seismic Data Library System for Cooperative Research (SDLS) has served for the past 16 \nyears under the auspices of the Antarctic Treaty (ATCM Recommendation XVI-12) as a role model for collaboration \nand equitable sharing of Antarctic multichannel seismic reflection (MCS) data for geoscience studies. During this \nperiod, collaboration in MCS studies has advanced deciphering the seismic stratigraphy and structure of Antarctica’s \ncontinental margin more rapidly than previously. MCS data compilations provided the geologic framework for scientific \ndrilling at several Antarctic locations and for high-resolution seismic and sampling studies to decipher Cenozoic \ndepositional paleoenvironments. The SDLS successes come from cooperation of National Antarctic Programs and \nindividual investigators in “on-time” submissions of their MCS data. Most do, but some do not. The SDLS \ncommunity has an International Polar Year (IPY) goal of all overdue MCS data being sent to the SDLS by end of IPY. \nThe community science objective is to compile all Antarctic MCS data to derive a unified seismic stratigraphy for the \ncontinental margin – a stratigraphy to be used with drilling data to derive Cenozoic circum-Antarctic paleobathymetry \nmaps and local-to-regional scale paleoenvironmental histories.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP001","usgsCitation":"Wardell, N., Childs, J., and Cooper, A.K., 2007, Advances through collaboration: sharing seismic reflection data via the Antarctic Seismic Data Library System for Cooperative Research (SDLS): U.S. Geological Survey Open-File Report 2007-1047-SRP-001, Text: 4 p.; Plate: 1 PDF poster, https://doi.org/10.3133/ofr20071047SRP001.","productDescription":"Text: 4 p.; Plate: 1 PDF poster","additionalOnlineFiles":"Y","costCenters":[],"links":[{"id":280663,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP001.JPG"},{"id":280660,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp001/of2007-1047srp001_text.pdf"},{"id":280659,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp001/of2007-1047srp001_plate1.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 180.0,-90.0 ], [ 180.0,-60.0 ], [ -180.0,-60.0 ], [ -180.0,-90.0 ], [ 180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd4b3ae4b0b290850f03ed","contributors":{"authors":[{"text":"Wardell, N.","contributorId":71093,"corporation":false,"usgs":true,"family":"Wardell","given":"N.","email":"","affiliations":[],"preferred":false,"id":487937,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Childs, J.R.","contributorId":63011,"corporation":false,"usgs":true,"family":"Childs","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":487936,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cooper, A. K.","contributorId":50149,"corporation":false,"usgs":true,"family":"Cooper","given":"A.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":487935,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70074265,"text":"ofr20071047SRP019 - 2007 - Paleocene and Maastrichtian calcareous nannofossils from clasts in Pleistocene  glaciomarine muds from the northern James Ross Basin, western Weddell Sea,  Antarctica","interactions":[],"lastModifiedDate":"2014-01-29T08:24:34","indexId":"ofr20071047SRP019","displayToPublicDate":"2007-01-17T11:18:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-1047-SRP-019","title":"Paleocene and Maastrichtian calcareous nannofossils from clasts in Pleistocene  glaciomarine muds from the northern James Ross Basin, western Weddell Sea,  Antarctica","docAbstract":"Site NBP0602A-9, drilled during the SHALDRIL II cruise of the RV/IB Nathaniel B. Palmer, includes two \nholes located in the northern James Ross Basin in the western Weddell Sea, very close to the eastern margin of the \nAntarctic Peninsula. Sediment from both holes consists of very dark grey, pebbly, sandy mud, grading to very dark \ngreenish grey, pebbly, silty mud in the lower 2.5 m of the second hole. In addition to abundant pebbles found \nthroughout the cores, both holes contain numerous sedimentary clasts. Biostratigraphic analysis of diatom assemblages \nfrom the glaciomarine muds yields rare to few, poorly preserved diatoms. The mixed assemblage consists mostly of \nextant species, but also includes reworked taxa that range to the Miocene. The absence of Rouxia spp., however, \nsuggests the sediment is late Pleistocene in age. The sedimentary clasts, on the other hand, are nearly barren of diatoms, \nbut contain rare, moderately to well-preserved calcareous nannofossils. The clasts contain three distinct assemblages. \nTwo clasts are assigned an early Maastrichtian age based on the presence of Biscutum magnum and Nephrolithus \ncorystus, while one clast yields a late Maastrichtian age based on the presence of Nephrolithus frequens. These samples \nalso contain other characteristic Late Cretaceous species, including Biscutum notaculum, Cribrosphaerella daniae, \nEiffellithus gorkae, Kamptnerius magnificus, and Prediscosphaera bukryi. Two samples yield an early Paleocene \nassemblage dominated by Hornibrookina teuriensis. The Maastrichtian assemblages are similar to those found in the \nLópez de Bertodano Formation on Seymour and Snow Hill Islands, making it the likely source area for the Cretaceous \nclast material. Although no calcareous nannofossils have been reported from Paleocene formations on these islands, the \noccurrence of calcareous foraminifers suggests other calcareous plankton may be present; thus the Paleocene clasts \nlikely also originated from the Seymour Island area.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP019","usgsCitation":"Kulhanek, D., 2007, Paleocene and Maastrichtian calcareous nannofossils from clasts in Pleistocene  glaciomarine muds from the northern James Ross Basin, western Weddell Sea,  Antarctica: U.S. Geological Survey Open-File Report 2007-1047-SRP-019, 5 p., https://doi.org/10.3133/ofr20071047SRP019.","productDescription":"5 p.","costCenters":[],"links":[{"id":281634,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP019.png"},{"id":281605,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp019/of2007-1047srp019.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 180.0,-90.0 ], [ 180.0,-60.0 ], [ -180.0,-60.0 ], [ -180.0,-90.0 ], [ 180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd6a76e4b0b2908510344f","contributors":{"authors":[{"text":"Kulhanek, D.K.","contributorId":66172,"corporation":false,"usgs":true,"family":"Kulhanek","given":"D.K.","email":"","affiliations":[],"preferred":false,"id":489461,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70068750,"text":"ofr20071047SRP004 - 2007 - The Ellsworth Mountains: critical and enduringly enigmatic","interactions":[],"lastModifiedDate":"2014-01-13T11:48:59","indexId":"ofr20071047SRP004","displayToPublicDate":"2007-01-16T11:22:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-1047-SRP-004","title":"The Ellsworth Mountains: critical and enduringly enigmatic","docAbstract":"The Ellsworth Mountains, first mapped under the leadership of Campbell Craddock, pose critical geological \nenigmas, solved and unsolved. The isolation of the mountains, their abrupt structural terminations and Paleozoic \nstratigraphic affinities are explained by rotation from the cratonic margin during Gondwanaland breakup. The \nmechanism remains obscure. The absence of intense folding associated with the Cambro-Ordovician Ross orogeny can \nbe ascribed to local extension along a subducting margin. Yet tantalizing questions regarding possible Precambrian \nconnections to Laurentia remain, and the cause of the post-Permian Gondwanide folding is controversial.\nThe elevation (~5000m) is high for an early Mesozoic fold belt. Thermal uplift could have been initiated during \nJurassic-Cretaceous block rotation and Weddell Sea opening and continued into the Cenozoic. The history of glaciation \nprovides input for models of ice loading and unloading. Measurements of present-day uplift test these models and help \nassess change in the mass of the ice sheet and hence in global sea level.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP004","usgsCitation":"Dalziel, I., 2007, The Ellsworth Mountains: critical and enduringly enigmatic: U.S. Geological Survey Open-File Report 2007-1047-SRP-004, 5 p., https://doi.org/10.3133/ofr20071047SRP004.","productDescription":"5 p.","costCenters":[],"links":[{"id":280869,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP004.JPG"},{"id":280867,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp004/of2007-1047srp004.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd76e8e4b0b2908510b33d","contributors":{"authors":[{"text":"Dalziel, I.W.D.","contributorId":44070,"corporation":false,"usgs":true,"family":"Dalziel","given":"I.W.D.","email":"","affiliations":[],"preferred":false,"id":488110,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":79554,"text":"fs20063125 - 2007 - Earthquake hazard in the heart of the homeland","interactions":[{"subject":{"id":40021,"text":"fs13102 - 2002 - Earthquake Hazard in the Heart of the Homeland","indexId":"fs13102","publicationYear":"2002","noYear":false,"title":"Earthquake Hazard in the Heart of the Homeland"},"predicate":"SUPERSEDED_BY","object":{"id":79554,"text":"fs20063125 - 2007 - Earthquake hazard in the heart of the homeland","indexId":"fs20063125","publicationYear":"2007","noYear":false,"title":"Earthquake hazard in the heart of the homeland"},"id":1}],"lastModifiedDate":"2019-07-17T16:14:18","indexId":"fs20063125","displayToPublicDate":"2007-01-13T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2006-3125","title":"Earthquake hazard in the heart of the homeland","docAbstract":"Evidence that earthquakes threaten the Mississippi, Ohio, and Wabash River valleys of the Central United States abounds. In fact, several of the largest historical earthquakes to strike the continental United States occurred in the winter of 1811-1812 along the New Madrid seismic zone, which stretches from just west of Memphis, Tenn., into southern Illinois. Several times in the past century, moderate earthquakes have been widely felt in the Wabash Valley seismic zone along the southern border of Illinois and Indiana. Throughout the region, between 150 and 200 earthquakes are recorded annually by a network of monitoring instruments, although most are too small to be felt by people. Geologic evidence for prehistoric earthquakes throughout the region has been mounting since the late 1970s. But how significant is the threat? How likely are large earthquakes and, more importantly, what is the chance that the shaking they cause will be damaging?\r\n","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/fs20063125","usgsCitation":"Gomberg, J., and Schweig, E., 2007, Earthquake hazard in the heart of the homeland (Version 1.0): U.S. Geological Survey Fact Sheet 2006-3125, 4 p., https://doi.org/10.3133/fs20063125.","productDescription":"4 p.","numberOfPages":"4","costCenters":[{"id":234,"text":"Earthquake Hazards Program","active":true,"usgs":true},{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true},{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"links":[{"id":123128,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/fs_2006_3125.jpg"},{"id":9171,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/fs/2006/3125/","linkFileType":{"id":5,"text":"html"}}],"edition":"Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a54e4b07f02db62c332","contributors":{"authors":[{"text":"Gomberg, Joan","contributorId":77919,"corporation":false,"usgs":true,"family":"Gomberg","given":"Joan","affiliations":[],"preferred":false,"id":290210,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schweig, Eugene","contributorId":21942,"corporation":false,"usgs":true,"family":"Schweig","given":"Eugene","affiliations":[],"preferred":false,"id":290209,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":79557,"text":"sir20055222 - 2007 - Hydrogeology of the Coconino Plateau and adjacent areas, Coconino and Yavapai Counties, Arizona","interactions":[],"lastModifiedDate":"2016-06-23T15:38:10","indexId":"sir20055222","displayToPublicDate":"2007-01-13T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2005-5222","title":"Hydrogeology of the Coconino Plateau and adjacent areas, Coconino and Yavapai Counties, Arizona","docAbstract":"<p>Two large, regional ground-water flow systems occur in the Coconino Plateau and adjacent areas: the C aquifer and the Redwall-Muav aquifer. The C aquifer occurs mainly in the eastern and southern parts of the 10,300-square-mile Coconino Plateau study area, and the Redwall-Muav aquifer underlies the entire study area. The C aquifer is a water-table aquifer for most of its occurrence with depths to water that range from a few hundred feet to more than 1,500 feet. In the western part of the Coconino Plateau study area, the C aquifer is dry except for small localized perched water-bearing zones decoupled from the C aquifer to the east. The Redwall-Muav aquifer underlies the C aquifer and ranges from at least 3,000 feet below land surface in the western part of the Coconino Plateau study area to more than 3,200 feet below land surface in the eastern part of the study area. The Redwall-Muav aquifer is a confined aquifer for most of its occurrence with hydraulic heads of several hundred to more than 500 feet above the top of the aquifer in the western part of the study area and more than 2,000 feet above the top of the aquifer in the eastern part of the study area near Flagstaff. In the eastern and northeast parts of the area, the C aquifer and the Redwall-Muav aquifer are in partial hydraulic connection through faults and other fractures. The water discharging from the two aquifers on the Coconino Plateau study area is generally of good quality for most intended uses. Water from sites in the lower Little Colorado River Canyon had high concentrations of most trace elements relative to other springs, rivers, and streams in the study area. Concentrations of barium, arsenic, uranium, and lead, and gross alpha radioactivity were greater than U.S. Environmental Protection Agency Maximum Contaminant Levels for drinking water at some sites. Ground water discharging to most springs, streams, and wells on the Coconino Plateau and in adjacent areas is a calcium magnesium bicarbonate type and has low concentrations of the major dissolved constituents. Ground water discharging from the Redwall-Muav aquifer to springs in the lower Little Colorado River Canyon is a mixture of water from the C aquifer and the Redwall-Muav aquifer and is a sodium chloride type with high concentrations of most major dissolved constituents. Concentrations of sulfate and chloride in ground water discharging from the Redwall-Muav aquifer at springs near the south rim of Grand Canyon increase toward the west. Water samples from the Verde River above Mormon Pocket had higher concentrations of most dissolved constituents than samples from springs that discharge from the Redwall-Muav aquifer at Mormon Pocket and in Sycamore Canyon. Water-chemistry data from C aquifer wells and springs in the Flagstaff area indicate that ground-water ages in the aquifer range from 7,000 years to modern and that samples were a mix of younger and older waters. Ground-water ages for the Redwall-Muav aquifer are estimated to range from 22,600 to 7,500 years, and low tritium values indicate that this water is older than water discharging from the C aquifer. Tritium and carbon-14 results indicate that ground water discharging at most springs and streams is a mixture of young and old ground waters, likely resulting from multiple flow paths and multiple recharge areas. Ground-water withdrawals in the study area increased from about 4,000 acre-feet per year prior to 1975, to about 20,000 acre-feet per year in 2003. About two-thirds of the water withdrawn is from the C aquifer and about one-third is from the Redwall-Muav aquifer. In the study area, most development of the C aquifer has occurred near Flagstaff. Development of the Redwall-Muav aquifer is more extensive in Verde Valley where water-bearing zones of the aquifer are closer to land surface. In recent years, however, development of the Redwall-Muav aquifer in the study area has increased in response to population growth and the atten</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/sir20055222","collaboration":"Prepared in cooperation with the Arizona Department of Water Resources","usgsCitation":"Bills, D., Flynn, M., and Monroe, S.A., 2007, Hydrogeology of the Coconino Plateau and adjacent areas, Coconino and Yavapai Counties, Arizona (Version 1.0: Originally posted 2007; Version 1.1: March 2016): U.S. Geological Survey Scientific Investigations Report 2005-5222, Report: xi, 101 p.; 4 Plates: 30.88 x 31.88 inches or smaller, https://doi.org/10.3133/sir20055222.","productDescription":"Report: xi, 101 p.; 4 Plates: 30.88 x 31.88 inches or smaller","numberOfPages":"107","onlineOnly":"Y","additionalOnlineFiles":"Y","costCenters":[{"id":128,"text":"Arizona Water Science Center","active":true,"usgs":true}],"links":[{"id":318944,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2005/5222/sir2005-5222_text.pdf","text":"Report","size":"7.9 MB","linkFileType":{"id":1,"text":"pdf"},"description":"SIR 2015-5222 Report"},{"id":318945,"rank":4,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/sir/2005/5222/sir2005-5222_plate1.pdf","text":"Plate 1","size":"9.2 MB","linkFileType":{"id":1,"text":"pdf"},"description":"SIR 2005-5222 Plate 1"},{"id":9173,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2005/5222/","linkFileType":{"id":5,"text":"html"}},{"id":318946,"rank":5,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/sir/2005/5222/sir2005-5222_plate2.pdf","text":"Plate 2","size":"18.2 MB","linkFileType":{"id":1,"text":"pdf"},"description":"SIR 2005-5222 Plate 2"},{"id":318947,"rank":6,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/sir/2005/5222/sir2005-5222_plate3.pdf","text":"Plate 3","size":"17.8 MB","linkFileType":{"id":1,"text":"pdf"},"description":"SIR 2005-5222 Plate 3"},{"id":318948,"rank":7,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/sir/2005/5222/sir2005-5222_plate4.pdf","text":"Plate 4","size":"17.8 MB","linkFileType":{"id":1,"text":"pdf"},"description":"SIR 2005-5222 Plate 4"},{"id":318949,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/sir/2005/5222/coverthb.jpg"}],"geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -113.25,34.5 ], [ -113.25,36.75 ], [ -111,36.75 ], [ -111,34.5 ], [ -113.25,34.5 ] ] ] } } ] }","edition":"Version 1.0: Originally posted 2007; Version 1.1: March 2016","contact":"<p><a href=\"mailto:dc_az@usgs.gov\">Director</a>, Arizona Water Science Center<br /> U.S. Geological Survey<br /> 520 N. Park Avenue<br /> Tucson, AZ 85719<br /> <a href=\"http://az.water.usgs.gov\" target=\"blank\">http://az.water.usgs.gov</a></p>","tableOfContents":"<ul>\n<li>Abstract</li>\n<li>Introduction</li>\n<li>Hydrogeology</li>\n<li>Water Chemistry</li>\n<li>Conceptual Model of the Ground-Water Flow Systems</li>\n<li>Considerations for Additional Data Collection and Monitoring</li>\n<li>Summary and Conclusions</li>\n<li>References Cited</li>\n<li>Supplemental Data</li>\n</ul>","revisedDate":"2016-03-17","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae1e4b07f02db688820","contributors":{"authors":[{"text":"Bills, Donald J. djbills@usgs.gov","contributorId":4180,"corporation":false,"usgs":true,"family":"Bills","given":"Donald J.","email":"djbills@usgs.gov","affiliations":[{"id":128,"text":"Arizona Water Science Center","active":true,"usgs":true}],"preferred":false,"id":290223,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Flynn, Marilyn E. meflynn@usgs.gov","contributorId":1039,"corporation":false,"usgs":true,"family":"Flynn","given":"Marilyn E.","email":"meflynn@usgs.gov","affiliations":[{"id":128,"text":"Arizona Water Science Center","active":true,"usgs":true}],"preferred":true,"id":290222,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Monroe, Stephen A.","contributorId":103313,"corporation":false,"usgs":true,"family":"Monroe","given":"Stephen","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":290224,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70207770,"text":"70207770 - 2007 - Corrigendum to “Age model for a continuous, ca 250-ka Quaternary lacustrine record from Bear Lake, Utah–Idaho” [Quaternary Science Reviews 25 (2006) 2271–2282]","interactions":[],"lastModifiedDate":"2020-06-15T15:46:57.080547","indexId":"70207770","displayToPublicDate":"2007-01-09T15:45:24","publicationYear":"2007","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":"Corrigendum to “Age model for a continuous, ca 250-ka Quaternary lacustrine record from Bear Lake, Utah–Idaho” [Quaternary Science Reviews 25 (2006) 2271–2282]","docAbstract":"<p>No abstract available.&nbsp;</p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.quascirev.2007.02.006","usgsCitation":"Colman, S., Kaufman, D.S., Heil, C., King, J., Dean, W.E., Rosenbaum, J.G., Forester, R.M., Bishcoff, J., Perkins, M.E., and McGeehin, J., 2007, Corrigendum to “Age model for a continuous, ca 250-ka Quaternary lacustrine record from Bear Lake, Utah–Idaho” [Quaternary Science Reviews 25 (2006) 2271–2282]: Quaternary Science Reviews, v. 26, no. 7-8, p. 1192-1192, https://doi.org/10.1016/j.quascirev.2007.02.006.","productDescription":"1 p.","startPage":"1192","endPage":"1192","costCenters":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true},{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true}],"links":[{"id":476928,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://digitalcommons.uri.edu/gsofacpubs/1710","text":"Publisher Index Page"},{"id":371129,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"26","issue":"7-8","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Colman, S.M.","contributorId":32851,"corporation":false,"usgs":true,"family":"Colman","given":"S.M.","email":"","affiliations":[],"preferred":false,"id":779254,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kaufman, D. S.","contributorId":18006,"corporation":false,"usgs":false,"family":"Kaufman","given":"D.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":779255,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Heil, C.","contributorId":68954,"corporation":false,"usgs":true,"family":"Heil","given":"C.","email":"","affiliations":[],"preferred":false,"id":779256,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"King, J.W.","contributorId":19265,"corporation":false,"usgs":true,"family":"King","given":"J.W.","email":"","affiliations":[],"preferred":false,"id":779257,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Dean, Walter E. dean@usgs.gov","contributorId":1801,"corporation":false,"usgs":true,"family":"Dean","given":"Walter","email":"dean@usgs.gov","middleInitial":"E.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":779258,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Rosenbaum, Joseph G. jrosenbaum@usgs.gov","contributorId":1524,"corporation":false,"usgs":true,"family":"Rosenbaum","given":"Joseph","email":"jrosenbaum@usgs.gov","middleInitial":"G.","affiliations":[],"preferred":true,"id":779259,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Forester, R. M.","contributorId":76332,"corporation":false,"usgs":true,"family":"Forester","given":"R.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":779260,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Bishcoff, J.L.","contributorId":221633,"corporation":false,"usgs":false,"family":"Bishcoff","given":"J.L.","email":"","affiliations":[],"preferred":false,"id":779261,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Perkins, M. E.","contributorId":92707,"corporation":false,"usgs":true,"family":"Perkins","given":"M.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":779262,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"McGeehin, John mcgeehin@usgs.gov","contributorId":167455,"corporation":false,"usgs":true,"family":"McGeehin","given":"John","email":"mcgeehin@usgs.gov","affiliations":[{"id":242,"text":"Eastern Geographic Science Center","active":true,"usgs":true},{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"preferred":true,"id":779263,"contributorType":{"id":1,"text":"Authors"},"rank":10}]}}
,{"id":70065938,"text":"ofr20071047KP11 - 2007 - Antarctica and global paleogeography: from Rodinia, rhrough Gondwanaland and Pangea, to the birth of the Southern Ocean and the opening of gateways","interactions":[],"lastModifiedDate":"2014-01-07T13:38:04","indexId":"ofr20071047KP11","displayToPublicDate":"2007-01-02T13:24:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-1047-KP-11","title":"Antarctica and global paleogeography: from Rodinia, rhrough Gondwanaland and Pangea, to the birth of the Southern Ocean and the opening of gateways","docAbstract":"Neoproterozoic Rodinia reconstructions associate East Antarctica (EANT) with cratonic Western Australia. By further \nlinking EANT to both Gondwana and Pangea with relative \nplate circuits, a Synthetic Apparent Polar Wander (SAPW) \npath for EANT is calculated. This path predicts that EANT \nwas located at tropical to subtropical southerly latitudes from \nca. 1 Ga to 420 Ma. Around 400 Ma and again at 320 Ma, \nEANT underwent southward drift. Ca. 250 Ma Antarctica \nvoyaged briefly north but headed south again ca. 200 Ma. \nSince 75 Ma EANT became surrounded by spreading centers \nand has remained extremely stable. Although paleomagnetic \ndata of the blocks that embrace West Antarctica are sparse, \nwe attempt to model their complex kinematics since the \nMesozoic. Together with the SAPW path and a revised \ncircum-Antarctic seafloor spreading history we construct a \nseries of new paleogeographic maps.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"National Academies Press","publisherLocation":"Washington, DC","doi":"10.3133/ofr20071047KP11","usgsCitation":"Torsvik, T., Gaina, C., and Redfield, T., 2007, Antarctica and global paleogeography: from Rodinia, rhrough Gondwanaland and Pangea, to the birth of the Southern Ocean and the opening of gateways: U.S. Geological Survey Open-File Report 2007-1047-KP-11, 16 p., https://doi.org/10.3133/ofr20071047KP11.","productDescription":"16 p.","startPage":"125","endPage":"140","costCenters":[],"links":[{"id":280658,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047KP11.JPG"},{"id":280657,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/kp/kp11/of2007-1047kp11.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 180.0,-90.0 ], [ 180.0,-60.0 ], [ -180.0,-60.0 ], [ -180.0,-90.0 ], [ 180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd4d73e4b0b290850f1830","contributors":{"authors":[{"text":"Torsvik, T.H.","contributorId":59342,"corporation":false,"usgs":true,"family":"Torsvik","given":"T.H.","email":"","affiliations":[],"preferred":false,"id":487932,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gaina, C.","contributorId":71389,"corporation":false,"usgs":true,"family":"Gaina","given":"C.","email":"","affiliations":[],"preferred":false,"id":487933,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Redfield, T.F.","contributorId":102278,"corporation":false,"usgs":true,"family":"Redfield","given":"T.F.","email":"","affiliations":[],"preferred":false,"id":487934,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70121119,"text":"70121119 - 2007 - Magnetic character of a large continental transform: an aeromagnetic survey of the Dead Sea Fault","interactions":[],"lastModifiedDate":"2017-11-18T10:20:06","indexId":"70121119","displayToPublicDate":"2007-01-01T16:11:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1757,"text":"Geochemistry, Geophysics, Geosystems","active":true,"publicationSubtype":{"id":10}},"title":"Magnetic character of a large continental transform: an aeromagnetic survey of the Dead Sea Fault","docAbstract":"<p>New high-resolution airborne magnetic (HRAM) data along a 120-km-long section of the Dead Sea Transform in southern Jordan and Israel shed light on the shallow structure of the fault zone and on the kinematics of the plate boundary. Despite infrequent seismic activity and only intermittent surface exposure, the fault is delineated clearly on a map of the first vertical derivative of the magnetic intensity, indicating that the source of the magnetic anomaly is shallow. The fault is manifested by a 10–20 nT negative anomaly in areas where the fault cuts through magnetic basement and by a <5 nT positive anomaly in other areas. Modeling suggests that the shallow fault is several hundred meters wide, in agreement with other geophysical and geological observations. A magnetic expression is observed only along the active trace of the fault and may reflect alteration of magnetic minerals due to fault zone processes or groundwater flow. The general lack of surface expression of the fault may reflect the absence of surface rupture during earthquakes. The magnetic data also indicate that unlike the San Andreas Fault, the location of this part of the plate boundary was stable throughout its history. Magnetic anomalies also support a total left-lateral offset of 105–110 km along the plate boundary, as suggested by others. Finally, despite previous suggestions of transtensional motion along the Dead Sea Transform, we did not identify any igneous intrusions related to the activity of this fault segment.</p>","language":"English","publisher":"Wiley","doi":"10.1029/2007GC001582","usgsCitation":"ten Brink, U., Rybakov, M., Al-Zoubi, A.S., and Rotstein, Y., 2007, Magnetic character of a large continental transform: an aeromagnetic survey of the Dead Sea Fault: Geochemistry, Geophysics, Geosystems, v. 8, no. 7, Q07005; 13 p., https://doi.org/10.1029/2007GC001582.","productDescription":"Q07005; 13 p.","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":476930,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2007gc001582","text":"Publisher Index Page"},{"id":292587,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Israel, Jordan","otherGeospatial":"Dead Sea Fault","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 35.0,29.666667 ], [ 35.0,30.333333 ], [ 35.333333,30.333333 ], [ 35.333333,29.666667 ], [ 35.0,29.666667 ] ] ] } } ] }","volume":"8","issue":"7","noUsgsAuthors":false,"publicationDate":"2007-07-13","publicationStatus":"PW","scienceBaseUri":"53f464cce4b073ff773a7d28","contributors":{"authors":[{"text":"ten Brink, Uri S. 0000-0001-6858-3001 utenbrink@usgs.gov","orcid":"https://orcid.org/0000-0001-6858-3001","contributorId":127560,"corporation":false,"usgs":true,"family":"ten Brink","given":"Uri S.","email":"utenbrink@usgs.gov","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true},{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"preferred":false,"id":498809,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rybakov, Michael","contributorId":27102,"corporation":false,"usgs":true,"family":"Rybakov","given":"Michael","email":"","affiliations":[],"preferred":false,"id":498808,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Al-Zoubi, Abdallah S.","contributorId":98647,"corporation":false,"usgs":true,"family":"Al-Zoubi","given":"Abdallah","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":498810,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Rotstein, Yair","contributorId":98648,"corporation":false,"usgs":true,"family":"Rotstein","given":"Yair","email":"","affiliations":[],"preferred":false,"id":498811,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70100321,"text":"ofr20071047SRP079 - 2007 - Analysis of the dinoflagellate cyst genus Impletosphaeridium as a marker of sea- ice conditions off Seymour Island: An ecomorphological approach","interactions":[],"lastModifiedDate":"2014-03-31T16:30:06","indexId":"ofr20071047SRP079","displayToPublicDate":"2007-01-01T16:03:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-1047-SRP-079","title":"Analysis of the dinoflagellate cyst genus Impletosphaeridium as a marker of sea- ice conditions off Seymour Island: An ecomorphological approach","docAbstract":"A unique reworked palynological assemblage composed of 32 to 100% (average of 63%) in\nImpletosphaeridium spp., was found during the study of sixteen samples recovered from piston cores taken off Seymour Island, Antarctica, during a pre-SHALDRIL study. One of the common Impletosphaeridium species recovered, I.\nlorum, was previously found in Seymour Island’s La Meseta Formation. Two questions we asked are: “What is the age\nof this high abundance of Impletosphaeridium spp., providing that they come from a unique source?”, and second “What is the environmental significance of such a high relative abundance?” The samples are likely to have been derived from sediments ranging from Eocene to Miocene in age, as this is the range for most of the Impletosphaeridium\nspecies. The environmental significance of this high abundance is a difficult question, not only because the genus is extinct, but also because these species are poorly known. To try to understand the ecological significance, we used the hypothesis that the morphology of a dinocyst is linked to environmental sea-surface parameters, and looked at extant species with a similar morphology. The extant dinoflagellate cysts of Echinidinium spp, Islandinium cezare, Islandinium minutum, and Pentapharsodinium dalei were selected for their morphological similarity with Impletosphaeridium. Modern ecological parameters for the extant species listed above were derived from the DinoDatabase (940 modern sea-surface samples from around the world). The database showed that these species are all\nindicators of sea-ice cover, with a minimum of 8 months for Echinidinium spp., ~ 5 months for Islandinium cezare, and\nfrom 1 to 12 months for Pentapharsodinium dalei and Islandinium minutum. If our morphologic-similarity hypothesis is correct, and if this high abundance is indeed indicative of a paleo-environmental condition, then it is most likely to have been associated with ephemeral sea-ice development off Seymour Island, sometime between the Eocene and the\nMiocene.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP079","usgsCitation":"Warny, S., Anderson, J., Londeix, L., and Bart, P., 2007, Analysis of the dinoflagellate cyst genus Impletosphaeridium as a marker of sea- ice conditions off Seymour Island: An ecomorphological approach: U.S. Geological Survey Open-File Report 2007-1047-SRP-079, 4 p., https://doi.org/10.3133/ofr20071047SRP079.","productDescription":"4 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":285163,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP079.JPG"},{"id":285162,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp079/of2007-1047srp079.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53558fc7e4b0120853e8be3a","contributors":{"authors":[{"text":"Warny, S.","contributorId":56975,"corporation":false,"usgs":true,"family":"Warny","given":"S.","email":"","affiliations":[],"preferred":false,"id":492177,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Anderson, J.B.","contributorId":93965,"corporation":false,"usgs":true,"family":"Anderson","given":"J.B.","email":"","affiliations":[],"preferred":false,"id":492180,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Londeix, L.","contributorId":59350,"corporation":false,"usgs":true,"family":"Londeix","given":"L.","email":"","affiliations":[],"preferred":false,"id":492178,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bart, P.J.","contributorId":81803,"corporation":false,"usgs":true,"family":"Bart","given":"P.J.","email":"","affiliations":[],"preferred":false,"id":492179,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70120718,"text":"70120718 - 2007 - Heavy-mineral provenance in an estuarine environment, Willapa Bay, Washington, USA: palaeogeographic implications and estuarine evolution","interactions":[],"lastModifiedDate":"2014-08-15T15:51:12","indexId":"70120718","displayToPublicDate":"2007-01-01T15:45:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1386,"text":"Developments in Sedimentology","active":true,"publicationSubtype":{"id":10}},"title":"Heavy-mineral provenance in an estuarine environment, Willapa Bay, Washington, USA: palaeogeographic implications and estuarine evolution","docAbstract":"<p>Modern sediments from representative localities in Willapa Bay, Washington, comprise two principal heavy-mineral suites. One contains approximately equivalent amounts of hornblende, orthopyroxene, and clinopyroxene; this is derived from the Columbia River, which discharges into the Pacific Ocean a short distance south of the bay. The other suite, dominated by clinopyroxene, is restricted to sands of rivers flowing into the bay from the east. The heavy-mineral distributions within the bay suggest that sand discharged from the Columbia River, borne north by longshore transport and carried into the bay by tidal currents, accounts for nearly all of the sand within the interior of Willapa Bay today.</p>\n<br>\n<p>Pleistocene deposits on the east side of the bay contain three heavy-mineral assemblages, two of which are identical to the modern assemblages described above. These assemblages reflect the relative influence of tidal and fluvial processes on the Late Pleistocene deposits (100,000–200,000 BP. Amino acid racemization in Quaternary shell deposits at Willapa Bay, Washington. Geochimica et Cosmochimica Acta 43, 1505–1520). They are also consistent with those processes inferred on the basis of sedimentary structures and stratigraphic relations in about two-thirds of the samples examined. Anomalies can be explained by recycling of sand from older deposits. The persistence of the two heavy-mineral suites suggests that the pattern of estuarine sedimentation in Late Pleistocene deposits closely resembled that of the modern bay.</p>\n<br>\n<p>The third heavy-mineral suite is enriched in epidote and occurs in a few older Pleistocene units. On the north side of the bay, the association of this suite with southwest-directed foresets in cross-bedded gravel indicates derivation from the northeast, perhaps from an area of glacial outwash. The presence of this suite in ancient estuarine sands exposed on the northeast side of the bay suggests that input from this northerly source may have intermittently dominated Willapa Bay deposition in the past.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Developments in Sedimentology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/S0070-4571(07)58023-4","usgsCitation":"Luepke Bynum, G., 2007, Heavy-mineral provenance in an estuarine environment, Willapa Bay, Washington, USA: palaeogeographic implications and estuarine evolution: Developments in Sedimentology, v. 58, p. 587-605, https://doi.org/10.1016/S0070-4571(07)58023-4.","productDescription":"19 p.","startPage":"587","endPage":"605","numberOfPages":"19","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":292338,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":292336,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S0070-4571(07)58023-4"}],"country":"United States","state":"Washington","otherGeospatial":"Willapa Bay","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -124.0,46.0 ], [ -124.0,47.0 ], [ -123.5,47.0 ], [ -123.5,46.0 ], [ -124.0,46.0 ] ] ] } } ] }","volume":"58","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53ef1ed3e4b0bfa1f993ef84","contributors":{"authors":[{"text":"Luepke Bynum, Gretchen","contributorId":52088,"corporation":false,"usgs":true,"family":"Luepke Bynum","given":"Gretchen","email":"","affiliations":[],"preferred":false,"id":498429,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70120716,"text":"70120716 - 2007 - Predicting longshore gradients in longshore transport: the CERC formula compared to Delft3D","interactions":[],"lastModifiedDate":"2017-09-14T13:55:21","indexId":"70120716","displayToPublicDate":"2007-01-01T15:30:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Predicting longshore gradients in longshore transport: the CERC formula compared to Delft3D","docAbstract":"The prediction of longshore transport gradients is critical for forecasting shoreline change. We employ simple test cases consisting of shoreface pits at varying distances from the shoreline to compare the longshore transport gradients predicted by the CERC formula against results derived from the process-based model Delft3D. Results show that while in some cases the two approaches give very similar results, in many cases the results diverge greatly. Although neither approach is validated with field data here, the Delft3D-based transport gradients provide much more consistent predictions of erosional and accretionary zones as the pit location varies across the shoreface.","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Coastal engineering 2006: Proceedings of the 30th international conference","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"Coastal Engineering 2006","conferenceDate":"September 3-8, 2006","conferenceLocation":"San Diego, California, USA","language":"English","publisher":"World Scientific","doi":"10.1142/9789812709554_0284","usgsCitation":"List, J., Hanes, D.M., and Ruggiero, P., 2007, Predicting longshore gradients in longshore transport: the CERC formula compared to Delft3D, <i>in</i> Coastal engineering 2006: Proceedings of the 30th international conference, v. 4, San Diego, California, USA, September 3-8, 2006, p. 3370-3380, https://doi.org/10.1142/9789812709554_0284.","productDescription":"11 p.","startPage":"3370","endPage":"3380","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":292332,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"4","noUsgsAuthors":false,"publicationDate":"2012-06-07","publicationStatus":"PW","scienceBaseUri":"53ef1ed6e4b0bfa1f993efe6","contributors":{"authors":[{"text":"List, Jeffrey H. jlist@usgs.gov","contributorId":2416,"corporation":false,"usgs":true,"family":"List","given":"Jeffrey H.","email":"jlist@usgs.gov","affiliations":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"preferred":false,"id":498421,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hanes, Daniel M.","contributorId":96360,"corporation":false,"usgs":true,"family":"Hanes","given":"Daniel","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":498423,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ruggiero, Peter","contributorId":15709,"corporation":false,"usgs":false,"family":"Ruggiero","given":"Peter","affiliations":[{"id":6680,"text":"Oregon State University","active":true,"usgs":false}],"preferred":false,"id":498422,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70047537,"text":"sir20075289B - 2007 - Tectonic setting and metallogenesis of volcanogenic massive sulfide deposits in the Bonnifield Mining District, Northern Alaska Range: Chapter B in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>","interactions":[],"lastModifiedDate":"2018-10-22T10:57:48","indexId":"sir20075289B","displayToPublicDate":"2007-01-01T15:21:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-5289","chapter":"B","title":"Tectonic setting and metallogenesis of volcanogenic massive sulfide deposits in the Bonnifield Mining District, Northern Alaska Range: Chapter B in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>","docAbstract":"This paper summarizes the results of field and laboratory investigations, including whole-rock geochemistry and \nradiogenic isotopes, of outcrop and drill core samples from \nvolcanogenic massive sulfide (VMS) deposits and associated \nmetaigneous rocks in the Wood River area of the Bonnifield \nmining district, northern Alaska Range (see fig. 1 of Editors’ \nPreface and Overview). U-Pb zircon igneous crystallization \nages from felsic rocks indicate a prolonged period of Late \nDevonian to Early Mississippian (373&plusmn;3 to 357&plusmn;4 million \nyears before present, or Ma) magmatism. This magmatism \noccurred in a basinal setting along the ancient Pacific margin \nof North America. The siliceous and carbonaceous compositions of metasedimentary rocks, Precambrian model ages \nbased on U-Pb dating of zircon and neodymium ages, and \nfor some units, radiogenic neodymium isotopic compositions and whole-rock trace-element ratios similar to those of \ncontinental crust are evidence for this setting. Red Mountain \n(also known as Dry Creek) and WTF, two of the largest \nVMS deposits, are hosted in peralkaline metarhyolite of the \nMystic Creek Member of the Totatlanika Schist. The Mystic \nCreek Member is distinctive in having high concentrations of \nhigh-field-strength elements (HFSE) and rare-earth elements \n(REE), indicative of formation in a within-plate (extensional) \nsetting. Mystic Creek metarhyolite is associated with alkalic, \nwithin-plate basalt of the Chute Creek Member; neodymium \nisotopic data indicate an enriched mantle component for both \nmembers of this bimodal (rhyolite-basalt) suite. Anderson \nMountain, the other significant VMS deposit, is hosted by \nthe Wood River assemblage. Metaigneous rocks in the Wood \nRiver assemblage span a wide compositional range, including \nandesitic rocks, which are characteristic of arc volcanism. Our \ndata suggest that the Mystic Creek Member likely formed in \nan extensional, back-arc basin that was associated with an outboard continental-margin volcanic arc that included rocks of the Wood River assemblage. We suggest that elevated HFSE \nand REE trace-element contents of metavolcanic rocks, whose \nmajor-element composition may have been altered, are an \nimportant prospecting tool for rocks of VMS deposit potential \nin east-central Alaska.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project (Scientific Investigations Report 2007-5289)","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20075289B","collaboration":"This report is Chapter B in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>.  For more information, see: <a href=\"http://pubs.usgs.gov/sir/2007/5289/\" target=\"_blank\">Scientific Investigation Report 2007-5289</a>.","usgsCitation":"Dusel-Bacon, C., Aleinikoff, J.N., Premo, W.R., Paradis, S., and Lohr-Schmidt, I., 2007, Tectonic setting and metallogenesis of volcanogenic massive sulfide deposits in the Bonnifield Mining District, Northern Alaska Range: Chapter B in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>: U.S. Geological Survey Scientific Investigations Report 2007-5289, iii, 7 p., https://doi.org/10.3133/sir20075289B.","productDescription":"iii, 7 p.","numberOfPages":"12","costCenters":[{"id":244,"text":"Eastern Mineral Resources Science Center","active":false,"usgs":true},{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":276243,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sir20075289b.png"},{"id":276241,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2007/5289/"},{"id":276242,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2007/5289/SIR2007-5289-B.pdf"}],"country":"Canada;United States","state":"Alaska;Yukon","otherGeospatial":"Tintina Gold Province","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -163.0,59.0 ], [ -163.0,67.0 ], [ -126.0,67.0 ], [ -126.0,59.0 ], [ -163.0,59.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5204bdf0e4b0403aa6262a93","contributors":{"editors":[{"text":"Gough, Larry P. lgough@usgs.gov","contributorId":1230,"corporation":false,"usgs":true,"family":"Gough","given":"Larry","email":"lgough@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":509557,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Day, Warren C. 0000-0002-9278-2120 wday@usgs.gov","orcid":"https://orcid.org/0000-0002-9278-2120","contributorId":1308,"corporation":false,"usgs":true,"family":"Day","given":"Warren","email":"wday@usgs.gov","middleInitial":"C.","affiliations":[{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true}],"preferred":true,"id":509558,"contributorType":{"id":2,"text":"Editors"},"rank":2}],"authors":[{"text":"Dusel-Bacon, Cynthia 0000-0001-8481-739X cdusel@usgs.gov","orcid":"https://orcid.org/0000-0001-8481-739X","contributorId":2797,"corporation":false,"usgs":true,"family":"Dusel-Bacon","given":"Cynthia","email":"cdusel@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":482298,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Aleinikoff, John N. 0000-0003-3494-6841 jaleinikoff@usgs.gov","orcid":"https://orcid.org/0000-0003-3494-6841","contributorId":1478,"corporation":false,"usgs":true,"family":"Aleinikoff","given":"John","email":"jaleinikoff@usgs.gov","middleInitial":"N.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":482296,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Premo, Wayne R. 0000-0001-9904-4801 wpremo@usgs.gov","orcid":"https://orcid.org/0000-0001-9904-4801","contributorId":1697,"corporation":false,"usgs":true,"family":"Premo","given":"Wayne","email":"wpremo@usgs.gov","middleInitial":"R.","affiliations":[],"preferred":true,"id":482297,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Paradis, Suzanne","contributorId":31666,"corporation":false,"usgs":true,"family":"Paradis","given":"Suzanne","email":"","affiliations":[],"preferred":false,"id":482299,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Lohr-Schmidt, Ilana","contributorId":93370,"corporation":false,"usgs":true,"family":"Lohr-Schmidt","given":"Ilana","email":"","affiliations":[],"preferred":false,"id":482300,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70120281,"text":"70120281 - 2007 - Monitoring and modeling nearshore dredge disposal for indirect beach nourishment, Ocean Beach, San Francisco","interactions":[],"lastModifiedDate":"2014-08-13T15:28:18","indexId":"70120281","displayToPublicDate":"2007-01-01T15:19:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Monitoring and modeling nearshore dredge disposal for indirect beach nourishment, Ocean Beach, San Francisco","docAbstract":"<p>Nearshore dredge disposal was performed during the summer of 2005 at Ocean Beach, San Francisco, CA, a high energy tidal and wave environment. This trial run was an attempt to provide a buffer to a reach of coastline where wave attack during the winter months has had a severe impact on existing sewage infrastructure. Although the subsequent beach response was inconclusive, after one year the peak of the disposal mound had migrated ~100 m toward the shore, providing evidence that annual dredge disposal at this site could be beneficial over the long-term by at the very least providing: 1) additional wave dissipation during storms 2) compatible sediment to feed nearshore bars, 3) sediment cover on an exposed sewage outfall pipe, and 4) a viable alternative to the shoaling offshore disposal site. Numerical modeling suggests that despite the strong tidal currents in the region, wave forcing is the dominant factor moving the sediment slowly toward shore, and placing sediment at just slightly shallower depths (e.g. < 8 m vs. > 9 m) in the future would have a more immediate impact.</p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Coastal engineering 2006: proceedings of the 30th international conference: San Diego, California, USA, 3-8 September 2006","largerWorkSubtype":{"id":12,"text":"Conference publication"},"language":"English","publisher":"World Scientific","doi":"10.1142/9789812709554_0352","usgsCitation":"Barnard, P., Hanes, D.M., Lescinski, J., and Elias, E., 2007, Monitoring and modeling nearshore dredge disposal for indirect beach nourishment, Ocean Beach, San Francisco, <i>in</i> Coastal engineering 2006: proceedings of the 30th international conference: San Diego, California, USA, 3-8 September 2006, v. 4, p. 4192-4204, https://doi.org/10.1142/9789812709554_0352.","productDescription":"13 p.","startPage":"4192","endPage":"4204","numberOfPages":"13","costCenters":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":292115,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":292114,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1142/9789812709554_0352"}],"country":"United States","state":"California","city":"San Francisco","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -122.596909,37.693335 ], [ -122.596909,37.929771 ], [ -122.327915,37.929771 ], [ -122.327915,37.693335 ], [ -122.596909,37.693335 ] ] ] } } ] }","volume":"4","noUsgsAuthors":false,"publicationDate":"2012-06-07","publicationStatus":"PW","scienceBaseUri":"53ec7bcee4b02bf5a7674073","contributors":{"authors":[{"text":"Barnard, Patrick L.","contributorId":54936,"corporation":false,"usgs":true,"family":"Barnard","given":"Patrick L.","affiliations":[],"preferred":false,"id":498093,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hanes, Daniel M.","contributorId":96360,"corporation":false,"usgs":true,"family":"Hanes","given":"Daniel","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":498094,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lescinski, Jamie","contributorId":35371,"corporation":false,"usgs":true,"family":"Lescinski","given":"Jamie","affiliations":[],"preferred":false,"id":498091,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Elias, Edwin","contributorId":50615,"corporation":false,"usgs":true,"family":"Elias","given":"Edwin","affiliations":[],"preferred":false,"id":498092,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70100462,"text":"ofr20071047SRP084 - 2007 - Differences in ice retreat across Pine Island Bay, West Antarctica, since the Last Glacial Maximum: Indications from multichannel seismic reflection data","interactions":[],"lastModifiedDate":"2014-04-01T15:45:20","indexId":"ofr20071047SRP084","displayToPublicDate":"2007-01-01T15:19:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-1047-SRP-084","title":"Differences in ice retreat across Pine Island Bay, West Antarctica, since the Last Glacial Maximum: Indications from multichannel seismic reflection data","docAbstract":"An understanding of the glacial history of Pine Island Bay (PIB) is essential for refining models of the future \nstability of the West Antarctic Ice Sheet (WAIS). New multichannel seismic reflection data from inner PIB are \ninterpreted in context of previously published reconstructions for the retreat history in this area since the Last Glacial \nMaximum. Differences in the behavior of the ice sheet during deglaciation are shown to exist for the western and \neastern parts of PIB. While we can identify only a thin veneer of sedimentary deposits in western PIB, eastern PIB \nshows sedimentary layers ≤ 400 msTWT. This is interpreted as a result of differences in ice retreat: a fast ice retreat in \nwestern PIB accompanied by rapid basal melting led to production of large meltwater streams, a slower ice retreat in \neastern PIB is most probably the result of smaller drainage basins resulting in less meltwater production.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP084","usgsCitation":"Uenzelmann-Neben, G., Gohl, K., Larter, R., and Schluter, P., 2007, Differences in ice retreat across Pine Island Bay, West Antarctica, since the Last Glacial Maximum: Indications from multichannel seismic reflection data: U.S. Geological Survey Open-File Report 2007-1047-SRP-084, Report: 4 p.; Plate 1: 11.69 inches x 8.27 inches; Plate 2: 16.54 inches x 11.69 inches, https://doi.org/10.3133/ofr20071047SRP084.","productDescription":"Report: 4 p.; Plate 1: 11.69 inches x 8.27 inches; Plate 2: 16.54 inches x 11.69 inches","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":285265,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP084.JPG"},{"id":285261,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp084/of2007-1047srp084_plate1.pdf"},{"id":285262,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp084/of2007-1047srp084_plate2.pdf"},{"id":285263,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp084/of2007-1047srp084.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53559003e4b0120853e8bebe","contributors":{"authors":[{"text":"Uenzelmann-Neben, G.","contributorId":22682,"corporation":false,"usgs":true,"family":"Uenzelmann-Neben","given":"G.","email":"","affiliations":[],"preferred":false,"id":492233,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gohl, K.","contributorId":53285,"corporation":false,"usgs":true,"family":"Gohl","given":"K.","email":"","affiliations":[],"preferred":false,"id":492234,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Larter, R.D.","contributorId":8765,"corporation":false,"usgs":true,"family":"Larter","given":"R.D.","email":"","affiliations":[],"preferred":false,"id":492232,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Schluter, P.","contributorId":102384,"corporation":false,"usgs":true,"family":"Schluter","given":"P.","email":"","affiliations":[],"preferred":false,"id":492235,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
]}