{"pageNumber":"689","pageRowStart":"17200","pageSize":"25","recordCount":46666,"records":[{"id":70034872,"text":"70034872 - 2011 - Retesting of liquefaction and nonliquefaction case histories from the 1976 Tangshan earthquake","interactions":[],"lastModifiedDate":"2021-03-09T19:06:13.087255","indexId":"70034872","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2327,"text":"Journal of Geotechnical and Geoenvironmental Engineering","active":true,"publicationSubtype":{"id":10}},"title":"Retesting of liquefaction and nonliquefaction case histories from the 1976 Tangshan earthquake","docAbstract":"<p><span>A field investigation was performed to retest liquefaction and nonliquefaction sites from the 1976 Tangshan earthquake in China. These sites were carefully investigated in 1978 and 1979 by using standard penetration test (SPT) and cone penetration test (CPT) equipment; however, the CPT measurements are obsolete because of the now nonstandard cone that was used at the time. In 2007, a modern cone was mobilized to retest 18 selected sites that are particularly important because of the intense ground shaking they sustained despite their high fines content and/or because the site did not liquefy. Of the sites reinvestigated and carefully reprocessed, 13 were considered accurate representative case histories. Two of the sites that were originally investigated for liquefaction have been reinvestigated for cyclic failure of fine-grained soil and removed from consideration for liquefaction triggering. The most important outcome of these field investigations was the collection of more accurate data for three nonliquefaction sites that experienced intense ground shaking. Data for these three case histories is now included in an area of the liquefaction triggering database that was poorly populated and will help constrain the upper bound of future liquefaction triggering curves.</span></p>","language":"English","publisher":"American Society of Civil Engineers","doi":"10.1061/(ASCE)GT.1943-5606.0000406","issn":"10900241","usgsCitation":"Moss, R., Kayen, R.E., Tong, L., Liu, S., Cai, G., and Wu, J., 2011, Retesting of liquefaction and nonliquefaction case histories from the 1976 Tangshan earthquake: Journal of Geotechnical and Geoenvironmental Engineering, v. 137, no. 4, p. 334-343, https://doi.org/10.1061/(ASCE)GT.1943-5606.0000406.","productDescription":"10 p.","startPage":"334","endPage":"343","costCenters":[],"links":[{"id":501077,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://digitalcommons.calpoly.edu/cenv_fac/215","text":"External Repository"},{"id":243864,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216025,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/(ASCE)GT.1943-5606.0000406"}],"country":"China","otherGeospatial":"Tangshan","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              116.19140625,\n              38.788345355085625\n            ],\n            [\n              119.94873046875,\n              38.788345355085625\n            ],\n            [\n              119.94873046875,\n              41.36031866306708\n            ],\n            [\n              116.19140625,\n              41.36031866306708\n            ],\n            [\n              116.19140625,\n              38.788345355085625\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"137","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aac17e4b0c8380cd86b4a","contributors":{"authors":[{"text":"Moss, R.E.S.","contributorId":71362,"corporation":false,"usgs":true,"family":"Moss","given":"R.E.S.","email":"","affiliations":[],"preferred":false,"id":448099,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kayen, R. E.","contributorId":14424,"corporation":false,"usgs":true,"family":"Kayen","given":"R.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":448094,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Tong, L.-Y.","contributorId":32374,"corporation":false,"usgs":true,"family":"Tong","given":"L.-Y.","email":"","affiliations":[],"preferred":false,"id":448096,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Liu, S.-Y.","contributorId":71027,"corporation":false,"usgs":true,"family":"Liu","given":"S.-Y.","email":"","affiliations":[],"preferred":false,"id":448098,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Cai, G.-J.","contributorId":21784,"corporation":false,"usgs":true,"family":"Cai","given":"G.-J.","email":"","affiliations":[],"preferred":false,"id":448095,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Wu, J.","contributorId":56998,"corporation":false,"usgs":true,"family":"Wu","given":"J.","email":"","affiliations":[],"preferred":false,"id":448097,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70034868,"text":"70034868 - 2011 - Reconciling multiple data sources to improve accuracy of large-scale prediction of forest disease incidence","interactions":[],"lastModifiedDate":"2021-03-10T12:57:46.160131","indexId":"70034868","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1450,"text":"Ecological Applications","active":true,"publicationSubtype":{"id":10}},"title":"Reconciling multiple data sources to improve accuracy of large-scale prediction of forest disease incidence","docAbstract":"<p><span>Ecological spatial data often come from multiple sources, varying in extent and accuracy. We describe a general approach to reconciling such data sets through the use of the Bayesian hierarchical framework. This approach provides a way for the data sets to borrow strength from one another while allowing for inference on the underlying ecological process. We apply this approach to study the incidence of eastern spruce dwarf mistletoe (</span><i>Arceuthobium pusillum</i><span>) in Minnesota black spruce (</span><i>Picea mariana</i><span>). A Minnesota Department of Natural Resources operational inventory of black spruce stands in northern Minnesota found mistletoe in 11% of surveyed stands, while a small, specific‐pest survey found mistletoe in 56% of the surveyed stands. We reconcile these two surveys within a Bayesian hierarchical framework and predict that 35–59% of black spruce stands in northern Minnesota are infested with dwarf mistletoe.</span></p>","language":"English","publisher":"Ecological Society of America","doi":"10.1890/09-1549.1","issn":"10510761","usgsCitation":"Hanks, E., Hooten, M., and Baker, F., 2011, Reconciling multiple data sources to improve accuracy of large-scale prediction of forest disease incidence: Ecological Applications, v. 21, no. 4, p. 1173-1188, https://doi.org/10.1890/09-1549.1.","productDescription":"16 p.","startPage":"1173","endPage":"1188","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":243802,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Minnesota","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -97.20703125,\n              48.99463598353405\n            ],\n            [\n              -96.92138671875,\n              47.517200697839414\n            ],\n            [\n              -96.767578125,\n              46.31658418182218\n            ],\n            [\n              -92.17529296875,\n              46.08847179577592\n            ],\n            [\n              -92.1533203125,\n              46.694667307773116\n            ],\n            [\n              -90.81298828125,\n              47.56170075451973\n            ],\n            [\n              -89.56054687499999,\n              47.81315451752768\n            ],\n            [\n              -91.0546875,\n              48.40003249610685\n            ],\n            [\n              -94.482421875,\n              48.980216985374994\n            ],\n            [\n              -95.2734375,\n              49.49667452747045\n            ],\n            [\n              -97.20703125,\n              48.99463598353405\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"21","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a96a0e4b0c8380cd820de","contributors":{"authors":[{"text":"Hanks, E.M.","contributorId":104305,"corporation":false,"usgs":true,"family":"Hanks","given":"E.M.","email":"","affiliations":[],"preferred":false,"id":448073,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hooten, Mevin 0000-0002-1614-723X mhooten@usgs.gov","orcid":"https://orcid.org/0000-0002-1614-723X","contributorId":2958,"corporation":false,"usgs":true,"family":"Hooten","given":"Mevin","email":"mhooten@usgs.gov","affiliations":[{"id":12963,"text":"Colorado Cooperative Fish and Wildlife Research Unit, Fort Collins, CO","active":true,"usgs":false},{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":448071,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Baker, F.A.","contributorId":103894,"corporation":false,"usgs":true,"family":"Baker","given":"F.A.","email":"","affiliations":[],"preferred":false,"id":448072,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70034848,"text":"70034848 - 2011 - Associated terrestrial and marine fossils in the late-glacial Presumpscot Formation, southern Maine, USA, and the marine reservoir effect on radiocarbon ages","interactions":[],"lastModifiedDate":"2021-03-10T20:02:51.731819","indexId":"70034848","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3218,"text":"Quaternary Research","active":true,"publicationSubtype":{"id":10}},"title":"Associated terrestrial and marine fossils in the late-glacial Presumpscot Formation, southern Maine, USA, and the marine reservoir effect on radiocarbon ages","docAbstract":"<p><span>Excavations in the late-glacial Presumpscot Formation at Portland, Maine, uncovered tree remains and other terrestrial organics associated with marine invertebrate shells in a landslide deposit. Buds of&nbsp;</span><span class=\"italic\">Populus balsamifera</span><span>&nbsp;(balsam poplar) occurred with twigs of&nbsp;</span><span class=\"italic\">Picea glauca</span><span>&nbsp;(white spruce) in the Presumpscot clay. Tree rings in&nbsp;</span><span class=\"italic\">Picea</span><span>&nbsp;logs indicate that the trees all died during winter dormancy in the same year. Ring widths show patterns of variation indicating responses to environmental changes. Fossil mosses and insects represent a variety of species and wet to dry microsites. The late-glacial environment at the site was similar to that of today's Maine coast. Radiocarbon ages of 14 tree samples are 11,907 ± 31 to 11,650 ± 50&nbsp;</span><span class=\"sup\">14</span><span>C yr BP. Wiggle matching of dated tree-ring segments to radiocarbon calibration data sets dates the landslide occurrence at&nbsp;</span><span class=\"italic\">ca.</span><span>&nbsp;13,520 + 95/−20 cal yr BP. Ages of shells juxtaposed with the logs are 12,850 ± 65&nbsp;</span><span class=\"sup\">14</span><span>C yr BP (</span><span class=\"italic\">Mytilus edulis</span><span>) and 12,800 ± 55&nbsp;</span><span class=\"sup\">14</span><span>C yr BP (</span><span class=\"italic\">Balanus</span><span>&nbsp;sp.), indicating a marine reservoir age of about 1000 yr. Using this value to correct previously published radiocarbon ages reduces the discrepancy between the Maine deglaciation chronology and the varve-based chronology elsewhere in New England.</span></p>","language":"English","publisher":"Cambridge University Press","doi":"10.1016/j.yqres.2011.02.002","issn":"00335894","usgsCitation":"Thompson, W., Griggs, C., Miller, N., Nelson, R., Weddle, T., and Kilian, T., 2011, Associated terrestrial and marine fossils in the late-glacial Presumpscot Formation, southern Maine, USA, and the marine reservoir effect on radiocarbon ages: Quaternary Research, v. 75, no. 3, p. 552-565, https://doi.org/10.1016/j.yqres.2011.02.002.","productDescription":"14 p.","startPage":"552","endPage":"565","costCenters":[],"links":[{"id":243428,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215613,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.yqres.2011.02.002"}],"country":"United States","state":"Maine","city":"Portland","otherGeospatial":"Portland","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -70.4498291015625,\n              43.49676775343911\n            ],\n            [\n              -70.07217407226562,\n              43.49676775343911\n            ],\n            [\n              -70.07217407226562,\n              43.77605194348484\n            ],\n            [\n              -70.4498291015625,\n              43.77605194348484\n            ],\n            [\n              -70.4498291015625,\n              43.49676775343911\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"75","issue":"3","noUsgsAuthors":false,"publicationDate":"2017-01-20","publicationStatus":"PW","scienceBaseUri":"5059ee8de4b0c8380cd49e01","contributors":{"authors":[{"text":"Thompson, W.B.","contributorId":98326,"corporation":false,"usgs":true,"family":"Thompson","given":"W.B.","email":"","affiliations":[],"preferred":false,"id":447917,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Griggs, C.B.","contributorId":45587,"corporation":false,"usgs":true,"family":"Griggs","given":"C.B.","email":"","affiliations":[],"preferred":false,"id":447913,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Miller, N.G.","contributorId":87318,"corporation":false,"usgs":true,"family":"Miller","given":"N.G.","email":"","affiliations":[],"preferred":false,"id":447916,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Nelson, R.E.","contributorId":53881,"corporation":false,"usgs":true,"family":"Nelson","given":"R.E.","email":"","affiliations":[],"preferred":false,"id":447914,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Weddle, T.K.","contributorId":60002,"corporation":false,"usgs":true,"family":"Weddle","given":"T.K.","email":"","affiliations":[],"preferred":false,"id":447915,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Kilian, T.M.","contributorId":40090,"corporation":false,"usgs":true,"family":"Kilian","given":"T.M.","email":"","affiliations":[],"preferred":false,"id":447912,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70034847,"text":"70034847 - 2011 - From intuition to statistics in building subsurface structural models","interactions":[],"lastModifiedDate":"2012-03-12T17:21:43","indexId":"70034847","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3796,"text":"World Oil","active":true,"publicationSubtype":{"id":10}},"title":"From intuition to statistics in building subsurface structural models","docAbstract":"Experts associated with the oil and gas exploration industry suggest that combining forward trishear models with stochastic global optimization algorithms allows a quantitative assessment of the uncertainty associated with a given structural model. The methodology is applied to incompletely imaged structures related to deepwater hydrocarbon reservoirs and results are compared to prior manual palinspastic restorations and borehole data. This methodology is also useful for extending structural interpretations into other areas of limited resolution, such as subsalt in addition to extrapolating existing data into seismic data gaps. This technique can be used for rapid reservoir appraisal and potentially have other applications for seismic processing, well planning, and borehole stability analysis.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"World Oil","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"00438790","usgsCitation":"Brandenburg, J., Alpak, F., Naruk, S., and Solum, J., 2011, From intuition to statistics in building subsurface structural models: World Oil, v. 232, no. 6, p. 97-101.","startPage":"97","endPage":"101","numberOfPages":"5","costCenters":[],"links":[{"id":243427,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"232","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a13fae4b0c8380cd54859","contributors":{"authors":[{"text":"Brandenburg, J.P.","contributorId":56467,"corporation":false,"usgs":true,"family":"Brandenburg","given":"J.P.","email":"","affiliations":[],"preferred":false,"id":447910,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Alpak, F.O.","contributorId":90561,"corporation":false,"usgs":true,"family":"Alpak","given":"F.O.","email":"","affiliations":[],"preferred":false,"id":447911,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Naruk, S.","contributorId":45135,"corporation":false,"usgs":true,"family":"Naruk","given":"S.","affiliations":[],"preferred":false,"id":447909,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Solum, J.","contributorId":16228,"corporation":false,"usgs":true,"family":"Solum","given":"J.","affiliations":[],"preferred":false,"id":447908,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70034845,"text":"70034845 - 2011 - ASTER spectral analysis and lithologic mapping of the Khanneshin carbonatite volcano, Afghanistan","interactions":[],"lastModifiedDate":"2017-10-02T15:12:45","indexId":"70034845","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1820,"text":"Geosphere","active":true,"publicationSubtype":{"id":10}},"title":"ASTER spectral analysis and lithologic mapping of the Khanneshin carbonatite volcano, Afghanistan","docAbstract":"<p id=\"p-1\">Advanced Spaceborne Thermal and Reflection Radiometer (ASTER) data of the early Quaternary Khanneshin carbonatite volcano located in southern Afghanistan were used to identify carbonate rocks within the volcano and to distinguish them from Neogene ferruginous polymict sandstone and argillite. The carbonatitic rocks are characterized by diagnostic CO<sub>3</sub><span>&nbsp;</span>absorption near 11.2 μm and 2.31–2.33 μm, whereas the sandstone, argillite, and adjacent alluvial deposits exhibit intense Si-O absorption near 8.7 μm caused mainly by quartz and Al-OH absorption near 2.20 μm due to muscovite and illite.</p><p id=\"p-2\">Calcitic carbonatite was distinguished from ankeritic carbonatite in the short wave infrared (SWIR) region of the ASTER data due to a slight shift of the CO<sub>3</sub><span>&nbsp;</span>absorption feature toward 2.26 μm (ASTER band 7) in the ankeritic carbonatite spectra. Spectral assessment using ASTER SWIR data suggests that the area is covered by extensive carbonatite flows that contain calcite, ankerite, and muscovite, though some areas mapped as ankeritic carbonatite on a preexisting geologic map were not identified in the ASTER data. A contact aureole shown on the geologic map was defined using an ASTER false color composite image (R = 6, G = 3, B = 1) and a logical operator byte image. The contact aureole rocks exhibit Fe<sup>2+</sup>, Al-OH, and Fe, Mg-OH spectral absorption features at 1.65, 2.2, and 2.33 μm, respectively, which suggest that the contact aureole rocks contain muscovite, epidote, and chlorite. The contact aureole rocks were mapped using an Interactive Data Language (IDL) logical operator.</p><p id=\"p-3\">A visible through short wave infrared (VNIR-SWIR) mineral and rock-type map based on matched filter, band ratio, and logical operator analysis illustrates: (1) laterally extensive calcitic carbonatite that covers most of the crater and areas northeast of the crater; (2) ankeritic carbonatite located southeast and north of the crater and some small deposits located within the crater; (3) agglomerate that primarily covers the inside rim of the crater and a small area west of the crater; (4) a crater rim that consists mostly of epidote-chlorite-muscovite–rich metamorphosed argillite and sandstone; and (5) iron (Fe<sup>3+</sup>) and muscovite-illite–rich rocks and iron-rich eolian sands surrounding the western part of the volcano. The thermal infrared (TIR) rock-type map illustrates laterally extensive carbonatitic and mafic rocks surrounded by quartz-rich eolian and fluvial reworked sediments. In addition, the combination of VNIR, SWIR, and TIR data complement one another in that the TIR data illustrate more laterally extensive rock types and the VNIR-SWIR data distinguish more specific varieties of rocks and mineral mixtures.</p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/GES00630.1","issn":"1553040X","usgsCitation":"Mars, J., and Rowan, L.C., 2011, ASTER spectral analysis and lithologic mapping of the Khanneshin carbonatite volcano, Afghanistan: Geosphere, v. 7, no. 1, p. 276-289, https://doi.org/10.1130/GES00630.1.","productDescription":"14 p.","startPage":"276","endPage":"289","numberOfPages":"14","ipdsId":"IP-022104","costCenters":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":475075,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1130/ges00630.1","text":"Publisher Index Page"},{"id":243393,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215579,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/GES00630.1"}],"volume":"7","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e638e4b0c8380cd47274","contributors":{"authors":[{"text":"Mars, John C. jmars@usgs.gov","contributorId":127493,"corporation":false,"usgs":true,"family":"Mars","given":"John C.","email":"jmars@usgs.gov","affiliations":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":447905,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rowan, Lawrence C.","contributorId":58629,"corporation":false,"usgs":true,"family":"Rowan","given":"Lawrence","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":447904,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70034840,"text":"70034840 - 2011 - Comparison of bottom-track to global positioning system referenced discharges measured using an acoustic Doppler current profiler","interactions":[],"lastModifiedDate":"2017-12-20T13:07:41","indexId":"70034840","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Comparison of bottom-track to global positioning system referenced discharges measured using an acoustic Doppler current profiler","docAbstract":"<p>A negative bias in discharge measurements made with an acoustic Doppler current profiler (ADCP) can be caused by the movement of sediment on or near the streambed. The integration of a global positioning system (GPS) to track the movement of the ADCP can be used to avoid the systematic negative bias associated with a moving streambed. More than 500 discharge transects from 63 discharge measurements with GPS data were collected at sites throughout the US, Canada, and New Zealand with no moving bed to compare GPS and bottom-track-referenced discharges. Although the data indicated some statistical bias depending on site conditions and type of GPS data used, these biases were typically about 0.5% or less. An assessment of differential correction sources was limited by a lack of data collected in a range of different correction sources and different GPS receivers at the same sites. Despite this limitation, the data indicate that the use of Wide Area Augmentation System (WAAS) corrected positional data is acceptable for discharge measurements using GGA as the boat-velocity reference. The discharge data based on GPS-referenced boat velocities from the VTG data string, which does not require differential correction, were comparable to the discharges based on GPS-referenced boat velocities from the differentially-corrected GGA data string. Spatial variability of measure discharges referenced to GGA, VTG and bottom-tracking is higher near the channel banks. The spatial variability of VTG-referenced discharges is correlated with the spatial distribution of maximum Horizontal Dilution of Precision (HDOP) values and the spatial variability of GGA-referenced discharges is correlated with proximity to channel banks.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.jhydrol.2011.02.025","issn":"00221694","usgsCitation":"Wagner, C., and Mueller, D.S., 2011, Comparison of bottom-track to global positioning system referenced discharges measured using an acoustic Doppler current profiler: Journal of Hydrology, v. 401, no. 3-4, p. 250-258, https://doi.org/10.1016/j.jhydrol.2011.02.025.","productDescription":"9 p.","startPage":"250","endPage":"258","costCenters":[{"id":476,"text":"North Carolina Water Science Center","active":true,"usgs":true}],"links":[{"id":243801,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"401","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f853e4b0c8380cd4d015","contributors":{"authors":[{"text":"Wagner, Chad R. 0000-0002-9602-7413 cwagner@usgs.gov","orcid":"https://orcid.org/0000-0002-9602-7413","contributorId":1530,"corporation":false,"usgs":true,"family":"Wagner","given":"Chad R.","email":"cwagner@usgs.gov","affiliations":[{"id":476,"text":"North Carolina Water Science Center","active":true,"usgs":true},{"id":38131,"text":"WMA - Office of Planning and Programming","active":true,"usgs":true}],"preferred":false,"id":447888,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mueller, David S. dmueller@usgs.gov","contributorId":1499,"corporation":false,"usgs":true,"family":"Mueller","given":"David","email":"dmueller@usgs.gov","middleInitial":"S.","affiliations":[{"id":502,"text":"Office of Surface Water","active":true,"usgs":true}],"preferred":true,"id":447887,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70034821,"text":"70034821 - 2011 - Geostatistical modeling of riparian forest microclimate and its implications for sampling","interactions":[],"lastModifiedDate":"2017-11-20T11:44:54","indexId":"70034821","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1170,"text":"Canadian Journal of Forest Research","active":true,"publicationSubtype":{"id":10}},"title":"Geostatistical modeling of riparian forest microclimate and its implications for sampling","docAbstract":"Predictive models of microclimate under various site conditions in forested headwater stream - riparian areas are poorly developed, and sampling designs for characterizing underlying riparian microclimate gradients are sparse. We used riparian microclimate data collected at eight headwater streams in the Oregon Coast Range to compare ordinary kriging (OK), universal kriging (UK), and kriging with external drift (KED) for point prediction of mean maximum air temperature (Tair). Several topographic and forest structure characteristics were considered as site-specific parameters. Height above stream and distance to stream were the most important covariates in the KED models, which outperformed OK and UK in terms of root mean square error. Sample patterns were optimized based on the kriging variance and the weighted means of shortest distance criterion using the simulated annealing algorithm. The optimized sample patterns outperformed systematic sample patterns in terms of mean kriging variance mainly for small sample sizes. These findings suggest methods for increasing efficiency of microclimate monitoring in riparian areas.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Canadian Journal of Forest Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1139/x11-015","issn":"00455067","usgsCitation":"Eskelson, B., Anderson, P.D., Hagar, J., and Temesgen, H., 2011, Geostatistical modeling of riparian forest microclimate and its implications for sampling: Canadian Journal of Forest Research, v. 41, no. 5, p. 974-985, https://doi.org/10.1139/x11-015.","startPage":"974","endPage":"985","numberOfPages":"12","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":243425,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215611,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1139/x11-015"}],"volume":"41","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a28b2e4b0c8380cd5a317","contributors":{"authors":[{"text":"Eskelson, B.N.I.","contributorId":79725,"corporation":false,"usgs":true,"family":"Eskelson","given":"B.N.I.","affiliations":[],"preferred":false,"id":447799,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Anderson, P. D.","contributorId":91189,"corporation":false,"usgs":true,"family":"Anderson","given":"P.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":447800,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hagar, J.C.","contributorId":46208,"corporation":false,"usgs":true,"family":"Hagar","given":"J.C.","affiliations":[],"preferred":false,"id":447797,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Temesgen, H.","contributorId":50371,"corporation":false,"usgs":true,"family":"Temesgen","given":"H.","affiliations":[],"preferred":false,"id":447798,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70034819,"text":"70034819 - 2011 - Effects of uncertain topographic input data on two-dimensional flow modeling in a gravel-bed river","interactions":[],"lastModifiedDate":"2012-03-12T17:21:43","indexId":"70034819","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Effects of uncertain topographic input data on two-dimensional flow modeling in a gravel-bed river","docAbstract":"Many applications in river research and management rely upon two-dimensional (2D) numerical models to characterize flow fields, assess habitat conditions, and evaluate channel stability. Predictions from such models are potentially highly uncertain due to the uncertainty associated with the topographic data provided as input. This study used a spatial stochastic simulation strategy to examine the effects of topographic uncertainty on flow modeling. Many, equally likely bed elevation realizations for a simple meander bend were generated and propagated through a typical 2D model to produce distributions of water-surface elevation, depth, velocity, and boundary shear stress at each node of the model's computational grid. Ensemble summary statistics were used to characterize the uncertainty associated with these predictions and to examine the spatial structure of this uncertainty in relation to channel morphology. Simulations conditioned to different data configurations indicated that model predictions became increasingly uncertain as the spacing between surveyed cross sections increased. Model sensitivity to topographic uncertainty was greater for base flow conditions than for a higher, subbankfull flow (75% of bankfull discharge). The degree of sensitivity also varied spatially throughout the bend, with the greatest uncertainty occurring over the point bar where the flow field was influenced by topographic steering effects. Uncertain topography can therefore introduce significant uncertainty to analyses of habitat suitability and bed mobility based on flow model output. In the presence of such uncertainty, the results of these studies are most appropriately represented in probabilistic terms using distributions of model predictions derived from a series of topographic realizations. Copyright 2011 by the American Geophysical Union.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Water Resources Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2010WR009618","issn":"00431397","usgsCitation":"Legleiter, C., Kyriakidis, P., McDonald, R.R., and Nelson, J.M., 2011, Effects of uncertain topographic input data on two-dimensional flow modeling in a gravel-bed river: Water Resources Research, v. 47, no. 3, https://doi.org/10.1029/2010WR009618.","costCenters":[],"links":[{"id":243391,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215577,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2010WR009618"}],"volume":"47","issue":"3","noUsgsAuthors":false,"publicationDate":"2011-03-15","publicationStatus":"PW","scienceBaseUri":"505a081ae4b0c8380cd51996","contributors":{"authors":[{"text":"Legleiter, C.J.","contributorId":104727,"corporation":false,"usgs":true,"family":"Legleiter","given":"C.J.","affiliations":[],"preferred":false,"id":447789,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kyriakidis, P.C.","contributorId":66506,"corporation":false,"usgs":true,"family":"Kyriakidis","given":"P.C.","email":"","affiliations":[],"preferred":false,"id":447786,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McDonald, R. R.","contributorId":72810,"corporation":false,"usgs":true,"family":"McDonald","given":"R.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":447788,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Nelson, J. M.","contributorId":68687,"corporation":false,"usgs":true,"family":"Nelson","given":"J.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":447787,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70034816,"text":"70034816 - 2011 - Biogeochemical factors affecting the presence of <sup>210</sup>Po in groundwater","interactions":[],"lastModifiedDate":"2013-04-15T18:16:52","indexId":"70034816","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":835,"text":"Applied Geochemistry","active":true,"publicationSubtype":{"id":10}},"title":"Biogeochemical factors affecting the presence of <sup>210</sup>Po in groundwater","docAbstract":"The discovery of natural <sup>210</sup>Po enrichment at levels exceeding 500 mBq/L in numerous domestic wells in northern Nevada, USA, led to a geochemical investigation of the processes responsible for its mobilization. <sup>210</sup>Po activities in 63 domestic and public-supply wells ranged from below 1 mBq/L to 6590 ± 590 mBq/L, among the highest reported levels in the USA. There is little spatial or depth variability in 210Pb activity in study-area sediments and mobilization of a few percent of the <sup>210</sup>Po in the sediments would account for all of the <sup>210</sup>Po in water. Stable-isotope measurements indicate SO<sub>4</sub> reduction has occurred in all <sup>210</sup>Po contaminated wells. Sulfide species are not accumulating in the groundwater in much of Lahontan Valley, probably because of S cycling involving microbial SO<sub>4</sub> reduction, abiotic oxidation of H<sub>2</sub>S to S<sup>0</sup> by Mn(IV), followed by microbial disproportionation of S<sup>0</sup> to H<sub>2</sub>S and SO<sub>4</sub>. The high pH, Ca depletion, MnCO3 saturation, and presence of S<sup>0</sup> in Lahontan Valley groundwater may be consequences of the anaerobic S cycling. Consistent with data from naturally-enriched wells in Florida, <sup>210</sup>Po activities begin to decrease when aqueous sulfide species begin to accumulate. This may be due to formation and precipitation of PoS, however, Eh–pH diagrams suggest PoS would not be stable in study-area groundwater. An alternative explanation for the study area is that H<sub>2</sub>S accumulation begins when anaerobic S cycling stops because Mn oxides are depleted and their reduction is no longer releasing <sup>210</sup>Po. Common features of <sup>210</sup>Po-enriched groundwater were identified by comparing the radiological and geochemical data from Nevada with data from naturally-enriched wells in Finland, and Florida and Maryland in the USA. Values of pH ranged from <5 in Florida wells to >9 in Nevada wells, indicating that pH is not critical in determining whether <sup>210</sup>Po is present. Where U is present in the sediments, the data suggest <sup>210</sup>Po levels may be elevated in aquifers with (1) SO<sub>4</sub>-reducing waters with low H<sub>2</sub>S concentrations, or (2) anoxic or oxic waters with extremely high Rn activities, particularly if the water is turbid.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Applied Geochemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","publisherLocation":"Amsterdam, Netherlands","doi":"10.1016/j.apgeochem.2011.01.011","issn":"08832927","usgsCitation":"Seiler, R.L., Stillings, L., Cutler, N., Salonen, L., and Outola, I., 2011, Biogeochemical factors affecting the presence of <sup>210</sup>Po in groundwater: Applied Geochemistry, v. 26, no. 4, p. 526-539, https://doi.org/10.1016/j.apgeochem.2011.01.011.","productDescription":"14 p.","startPage":"526","endPage":"539","costCenters":[{"id":465,"text":"Nevada Water Science Center","active":true,"usgs":true}],"links":[{"id":243861,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216022,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.apgeochem.2011.01.011"}],"volume":"26","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f152e4b0c8380cd4abba","contributors":{"authors":[{"text":"Seiler, R. L.","contributorId":87546,"corporation":false,"usgs":true,"family":"Seiler","given":"R.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":447779,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stillings, L.L.","contributorId":52229,"corporation":false,"usgs":true,"family":"Stillings","given":"L.L.","email":"","affiliations":[],"preferred":false,"id":447776,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cutler, N.","contributorId":86992,"corporation":false,"usgs":true,"family":"Cutler","given":"N.","email":"","affiliations":[],"preferred":false,"id":447778,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Salonen, L.","contributorId":76568,"corporation":false,"usgs":true,"family":"Salonen","given":"L.","email":"","affiliations":[],"preferred":false,"id":447777,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Outola, I.","contributorId":21783,"corporation":false,"usgs":true,"family":"Outola","given":"I.","email":"","affiliations":[],"preferred":false,"id":447775,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70034785,"text":"70034785 - 2011 - Summary of intrinsic and extrinsic factors affecting detection probability of marsh birds","interactions":[],"lastModifiedDate":"2021-03-15T19:20:38.144917","indexId":"70034785","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3750,"text":"Wetlands","onlineIssn":"1943-6246","printIssn":"0277-5212","active":true,"publicationSubtype":{"id":10}},"title":"Summary of intrinsic and extrinsic factors affecting detection probability of marsh birds","docAbstract":"<p><span>Many species of marsh birds (rails, bitterns, grebes, etc.) rely exclusively on emergent marsh vegetation for all phases of their life cycle, and many organizations have become concerned about the status and persistence of this group of birds. Yet, marsh birds are notoriously difficult to monitor due to their secretive habits. We synthesized the published and unpublished literature and summarized the factors that influence detection probability of secretive marsh birds in North America. Marsh birds are more likely to respond to conspecific than heterospecific calls, and seasonal peak in vocalization probability varies among co-existing species. The effectiveness of morning versus evening surveys varies among species and locations. Vocalization probability appears to be positively correlated with density in breeding Virginia Rails (</span><i>Rallus limicola</i><span>), Soras (</span><i>Porzana carolina</i><span>), and Clapper Rails (</span><i>Rallus longirostris</i><span>). Movement of birds toward the broadcast source creates biases when using count data from call-broadcast surveys to estimate population density. Ambient temperature, wind speed, cloud cover, and moon phase affected detection probability in some, but not all, studies. Better estimates of detection probability are needed. We provide recommendations that would help improve future marsh bird survey efforts and a list of 14 priority information and research needs that represent gaps in our current knowledge where future resources are best directed.</span></p>","language":"English","publisher":"Springer Link","doi":"10.1007/s13157-011-0155-x","issn":"02775212","usgsCitation":"Conway, C.J., and Gibbs, J., 2011, Summary of intrinsic and extrinsic factors affecting detection probability of marsh birds: Wetlands, v. 31, no. 2, p. 403-411, https://doi.org/10.1007/s13157-011-0155-x.","productDescription":"9 p.","startPage":"403","endPage":"411","ipdsId":"IP-025948","costCenters":[{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true}],"links":[{"id":243387,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215574,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s13157-011-0155-x"}],"volume":"31","issue":"2","noUsgsAuthors":false,"publicationDate":"2011-03-18","publicationStatus":"PW","scienceBaseUri":"505b9e91e4b08c986b31dfb9","contributors":{"authors":[{"text":"Conway, Courtney J. 0000-0003-0492-2953 cconway@usgs.gov","orcid":"https://orcid.org/0000-0003-0492-2953","contributorId":2951,"corporation":false,"usgs":true,"family":"Conway","given":"Courtney","email":"cconway@usgs.gov","middleInitial":"J.","affiliations":[{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true}],"preferred":true,"id":447612,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gibbs, J.P.","contributorId":54937,"corporation":false,"usgs":true,"family":"Gibbs","given":"J.P.","email":"","affiliations":[],"preferred":false,"id":447613,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70034759,"text":"70034759 - 2011 - Real-time monitoring of CO2 storage sites: Application to Illinois Basin-Decatur Project","interactions":[],"lastModifiedDate":"2021-04-15T11:42:16.12095","indexId":"70034759","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5215,"text":"Energy Procedia","onlineIssn":"1876-6102","active":true,"publicationSubtype":{"id":10}},"title":"Real-time monitoring of CO2 storage sites: Application to Illinois Basin-Decatur Project","docAbstract":"<p><span>Optimization of carbon dioxide (CO</span><sub>2</sub><span>) storage operations for efficiency and safety requires use of monitoring techniques and implementation of control protocols. The monitoring techniques consist of permanent sensors and tools deployed for measurement campaigns. Large amounts of data are thus generated. These data must be managed and integrated for interpretation at different time scales. A fast interpretation loop involves combining continuous measurements from permanent sensors as they are collected to enable a rapid response to detected events; a slower loop requires combining large datasets gathered over longer operational periods from all techniques. The purpose of this paper is twofold. First, it presents an analysis of the monitoring objectives to be performed in the slow and fast interpretation loops. Second, it describes the implementation of the fast interpretation loop with a real-time monitoring system at the Illinois Basin–Decatur Project (IBDP) in Illinois, USA.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.egypro.2011.02.548","issn":"18766102","usgsCitation":"Picard, G., Berard, T., Chabora, E., Marsteller, S., Greenberg, S., Finley, R., Rinck, U., Greenaway, R., Champagnon, C., and Davard, J., 2011, Real-time monitoring of CO2 storage sites: Application to Illinois Basin-Decatur Project: Energy Procedia, v. 4, p. 5594-5598, https://doi.org/10.1016/j.egypro.2011.02.548.","productDescription":"5 p.","startPage":"5594","endPage":"5598","numberOfPages":"5","costCenters":[],"links":[{"id":487837,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1016/j.egypro.2011.02.548","text":"Publisher Index Page"},{"id":243486,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a95a8e4b0c8380cd81b64","contributors":{"authors":[{"text":"Picard, G.","contributorId":28094,"corporation":false,"usgs":true,"family":"Picard","given":"G.","email":"","affiliations":[],"preferred":false,"id":447449,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Berard, T.","contributorId":74588,"corporation":false,"usgs":true,"family":"Berard","given":"T.","email":"","affiliations":[],"preferred":false,"id":447454,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Chabora, E.","contributorId":73841,"corporation":false,"usgs":true,"family":"Chabora","given":"E.","email":"","affiliations":[],"preferred":false,"id":447453,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Marsteller, S.","contributorId":27288,"corporation":false,"usgs":true,"family":"Marsteller","given":"S.","email":"","affiliations":[],"preferred":false,"id":447448,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Greenberg, S.","contributorId":79925,"corporation":false,"usgs":true,"family":"Greenberg","given":"S.","email":"","affiliations":[],"preferred":false,"id":447456,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Finley, R.J.","contributorId":70984,"corporation":false,"usgs":true,"family":"Finley","given":"R.J.","email":"","affiliations":[],"preferred":false,"id":447452,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Rinck, U.","contributorId":87389,"corporation":false,"usgs":true,"family":"Rinck","given":"U.","email":"","affiliations":[],"preferred":false,"id":447457,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Greenaway, R.","contributorId":77383,"corporation":false,"usgs":true,"family":"Greenaway","given":"R.","email":"","affiliations":[],"preferred":false,"id":447455,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Champagnon, C.","contributorId":66087,"corporation":false,"usgs":true,"family":"Champagnon","given":"C.","email":"","affiliations":[],"preferred":false,"id":447450,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Davard, J.","contributorId":66508,"corporation":false,"usgs":true,"family":"Davard","given":"J.","email":"","affiliations":[],"preferred":false,"id":447451,"contributorType":{"id":1,"text":"Authors"},"rank":10}]}}
,{"id":70034757,"text":"70034757 - 2011 - Infrasound from the 2007 fissure eruptions of Kīlauea Volcano, Hawai'i","interactions":[],"lastModifiedDate":"2018-10-30T09:37:06","indexId":"70034757","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"Infrasound from the 2007 fissure eruptions of Kīlauea Volcano, Hawai'i","docAbstract":"Varied acoustic signals were recorded at Kīlauea Volcano in mid-2007, coincident with dramatic changes in the volcano's activity. Prior to this time period, Pu'u 'Ō'ō crater produced near-continuous infrasonic tremor and was the primary source of degassing and lava effusion at Kīlauea. Collapse and draining of Pu'u 'Ō'ō  crater in mid-June produced impulsive infrasonic signals and fluctuations in infrasonic tremor. Fissure eruptions on 19 June and 21 July were clearly located spatially and temporally using infrasound arrays. The 19 June eruption from a fissure approximately mid-way between Kīlauea's summit and Pu'u 'O'o produced infrasound for ~30 minutes-the only observed geophysical signal associated with the fissure opening. The infrasound signal from the 21 July eruption just east of Pu'u 'Ō'ō  shows a clear azimuthal progression over time, indicative of fissure propagation over 12.9 hours. The total fissure propagation rate is relatively slow at 164 m/hr, although the fissure system ruptured discontinuously. Individual fissure rupture times are estimated using the acoustic data combined with visual observations.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geophysical Research Letters","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2010GL046422","issn":"00948276","usgsCitation":"Fee, D., Garces, M., Orr, T., and Poland, M.P., 2011, Infrasound from the 2007 fissure eruptions of Kīlauea Volcano, Hawai'i: Geophysical Research Letters, v. 38, 5 p.; L06309, https://doi.org/10.1029/2010GL046422.","productDescription":"5 p.; L06309","costCenters":[{"id":336,"text":"Hawaiian Volcano Observatory","active":false,"usgs":true}],"links":[{"id":475169,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2010gl046422","text":"Publisher Index Page"},{"id":215635,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2010GL046422"},{"id":243452,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Hawai'i","otherGeospatial":"Kilauea Volcano","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -155.05,19.58 ], [ -155.05,19.76 ], [ -155.03,19.76 ], [ -155.03,19.58 ], [ -155.05,19.58 ] ] ] } } ] }","volume":"38","noUsgsAuthors":false,"publicationDate":"2011-03-30","publicationStatus":"PW","scienceBaseUri":"505a3bcae4b0c8380cd62839","contributors":{"authors":[{"text":"Fee, D.","contributorId":23353,"corporation":false,"usgs":true,"family":"Fee","given":"D.","email":"","affiliations":[],"preferred":false,"id":447441,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Garces, M.","contributorId":42406,"corporation":false,"usgs":true,"family":"Garces","given":"M.","email":"","affiliations":[],"preferred":false,"id":447443,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Orr, Tim R. 0000-0003-1157-7588","orcid":"https://orcid.org/0000-0003-1157-7588","contributorId":26365,"corporation":false,"usgs":true,"family":"Orr","given":"Tim R.","affiliations":[{"id":336,"text":"Hawaiian Volcano Observatory","active":false,"usgs":true}],"preferred":true,"id":447442,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Poland, Michael P. 0000-0001-5240-6123 mpoland@usgs.gov","orcid":"https://orcid.org/0000-0001-5240-6123","contributorId":146118,"corporation":false,"usgs":true,"family":"Poland","given":"Michael","email":"mpoland@usgs.gov","middleInitial":"P.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":447444,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70034733,"text":"70034733 - 2011 - Statistical models of temperature in the Sacramento-San Joaquin delta under climate-change scenarios and ecological implications","interactions":[],"lastModifiedDate":"2018-06-08T13:44:54","indexId":"70034733","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1584,"text":"Estuaries and Coasts","active":true,"publicationSubtype":{"id":10}},"title":"Statistical models of temperature in the Sacramento-San Joaquin delta under climate-change scenarios and ecological implications","docAbstract":"<p><span>Changes in water temperatures caused by climate change in California’s Sacramento–San Joaquin Delta will affect the ecosystem through physiological rates of fishes and invertebrates. This study presents statistical models that can be used to forecast water temperature within the Delta as a response to atmospheric conditions. The daily average model performed well (</span><i class=\"EmphasisTypeItalic \">R</i><span><span>&nbsp;</span></span><sup>2</sup><span>values greater than 0.93 during verification periods) for all stations within the Delta and San Francisco Bay provided there was at least 1&nbsp;year of calibration data. To provide long-term projections of Delta water temperature, we forced the model with downscaled data from climate scenarios. Based on these projections, the ecological implications for the delta smelt, a key species, were assessed based on temperature thresholds. The model forecasts increases in the number of days above temperatures causing high mortality (especially along the Sacramento River) and a shift in thermal conditions for spawning to earlier in the year.</span></p>","language":"English","publisher":"Springer","doi":"10.1007/s12237-010-9369-z","issn":"15592723","usgsCitation":"Wagner, R., Stacey, M., Brown, L.R., and Dettinger, M., 2011, Statistical models of temperature in the Sacramento-San Joaquin delta under climate-change scenarios and ecological implications: Estuaries and Coasts, v. 34, no. 3, p. 544-556, https://doi.org/10.1007/s12237-010-9369-z.","productDescription":"13 p.","startPage":"544","endPage":"556","numberOfPages":"13","costCenters":[{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true}],"links":[{"id":475211,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1007/s12237-010-9369-z","text":"Publisher Index Page"},{"id":243578,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"34","issue":"3","noUsgsAuthors":false,"publicationDate":"2011-02-01","publicationStatus":"PW","scienceBaseUri":"505b9705e4b08c986b31b834","contributors":{"authors":[{"text":"Wagner, R.W.","contributorId":48784,"corporation":false,"usgs":true,"family":"Wagner","given":"R.W.","email":"","affiliations":[],"preferred":false,"id":447273,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stacey, Mark T.","contributorId":94531,"corporation":false,"usgs":false,"family":"Stacey","given":"Mark T.","affiliations":[{"id":12776,"text":"Department of Civil and Environmental Engineering,  University of California, Berkeley, California, USA","active":true,"usgs":false}],"preferred":false,"id":447274,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brown, Larry R. 0000-0001-6702-4531 lrbrown@usgs.gov","orcid":"https://orcid.org/0000-0001-6702-4531","contributorId":1717,"corporation":false,"usgs":true,"family":"Brown","given":"Larry","email":"lrbrown@usgs.gov","middleInitial":"R.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":447275,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Dettinger, Michael D. 0000-0002-7509-7332 mddettin@usgs.gov","orcid":"https://orcid.org/0000-0002-7509-7332","contributorId":146383,"corporation":false,"usgs":true,"family":"Dettinger","given":"Michael D.","email":"mddettin@usgs.gov","affiliations":[],"preferred":false,"id":447276,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70034731,"text":"70034731 - 2011 - The use of historical imagery in the remediation of an urban hazardous waste site","interactions":[],"lastModifiedDate":"2021-04-14T20:19:38.915352","indexId":"70034731","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"The use of historical imagery in the remediation of an urban hazardous waste site","docAbstract":"<p>The information derived from the interpretation of historical aerial photographs is perhaps the most basic multitemporal application of remote-sensing data. Aerial photographs dating back to the early 20th century can be extremely valuable sources of historical landscape activity. In this application, imagery from 1918 to 1927 provided a wealth of information about chemical weapons testing, storage, handling, and disposal of these hazardous materials. When analyzed by a trained photo-analyst, the 1918 aerial photographs resulted in 42 features of potential interest. When compared with current remedial activities and known areas of contamination, 33 of 42 or 78.5% of the features were spatially correlated with areas of known contamination or other remedial hazardous waste cleanup activity.</p>","largerWorkTitle":"IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing","language":"English","publisher":"The Institute of Electrical and Electronics Engineers","doi":"10.1109/JSTARS.2010.2049254","usgsCitation":"Slonecker, E., 2011, The use of historical imagery in the remediation of an urban hazardous waste site, <i>in</i> IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, v. 4, no. 2, p. 281-291, https://doi.org/10.1109/JSTARS.2010.2049254.","startPage":"281","endPage":"291","numberOfPages":"11","costCenters":[],"links":[{"id":243549,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215727,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1109/JSTARS.2010.2049254"}],"volume":"4","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb189e4b08c986b325326","contributors":{"authors":[{"text":"Slonecker, E.T.","contributorId":41132,"corporation":false,"usgs":true,"family":"Slonecker","given":"E.T.","email":"","affiliations":[],"preferred":false,"id":447268,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70034729,"text":"70034729 - 2011 - A simple and effective method for filling gaps in Landsat ETM+ SLC-off images","interactions":[],"lastModifiedDate":"2018-02-21T15:33:06","indexId":"70034729","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3254,"text":"Remote Sensing of Environment","printIssn":"0034-4257","active":true,"publicationSubtype":{"id":10}},"title":"A simple and effective method for filling gaps in Landsat ETM+ SLC-off images","docAbstract":"The scan-line corrector (SLC) of the Landsat 7 Enhanced Thematic Mapper Plus (ETM+) sensor failed in 2003, resulting in about 22% of the pixels per scene not being scanned. The SLC failure has seriously limited the scientific applications of ETM+ data. While there have been a number of methods developed to fill in the data gaps, each method has shortcomings, especially for heterogeneous landscapes. Based on the assumption that the same-class neighboring pixels around the un-scanned pixels have similar spectral characteristics, and that these neighboring and un-scanned pixels exhibit similar patterns of spectral differences between dates, we developed a simple and effective method to interpolate the values of the pixels within the gaps. We refer to this method as the Neighborhood Similar Pixel Interpolator (NSPI). Simulated and actual SLC-off ETM+ images were used to assess the performance of the NSPI. Results indicate that NSPI can restore the value of un-scanned pixels very accurately, and that it works especially well in heterogeneous regions. In addition, it can work well even if there is a relatively long time interval or significant spectral changes between the input and target image. The filled images appear reasonably spatially continuous without obvious striping patterns. Supervised classification using the maximum likelihood algorithm was done on both gap-filled simulated SLC-off data and the original \"gap free\" data set, and it was found that classification results, including accuracies, were very comparable. This indicates that gap-filled products generated by NSPI will have relevance to the user community for various land cover applications. In addition, the simple principle and high computational efficiency of NSPI will enable processing large volumes of SLC-off ETM+ data.","language":"English","publisher":"Elsevier","publisherLocation":"Amsterdam, Netherlands","doi":"10.1016/j.rse.2010.12.010","issn":"00344257","usgsCitation":"Chen, J., Zhu, X., Vogelmann, J., Gao, F., and Jin, S., 2011, A simple and effective method for filling gaps in Landsat ETM+ SLC-off images: Remote Sensing of Environment, v. 115, no. 4, p. 1053-1064, https://doi.org/10.1016/j.rse.2010.12.010.","productDescription":"12 p.","startPage":"1053","endPage":"1064","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":243518,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215697,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.rse.2010.12.010"}],"volume":"115","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e58ae4b0c8380cd46df1","contributors":{"authors":[{"text":"Chen, Jin","contributorId":202654,"corporation":false,"usgs":false,"family":"Chen","given":"Jin","email":"","affiliations":[],"preferred":false,"id":447245,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Zhu, Xiaolin","contributorId":202655,"corporation":false,"usgs":false,"family":"Zhu","given":"Xiaolin","email":"","affiliations":[],"preferred":false,"id":447242,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Vogelmann, James E. 0000-0002-0804-5823 vogel@usgs.gov","orcid":"https://orcid.org/0000-0002-0804-5823","contributorId":649,"corporation":false,"usgs":true,"family":"Vogelmann","given":"James E.","email":"vogel@usgs.gov","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":false,"id":447241,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gao, Feng 0000-0002-1865-2846","orcid":"https://orcid.org/0000-0002-1865-2846","contributorId":70671,"corporation":false,"usgs":false,"family":"Gao","given":"Feng","email":"","affiliations":[{"id":6622,"text":"US Department of Agriculture","active":true,"usgs":false}],"preferred":false,"id":447244,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Jin, Suming 0000-0001-9919-8077 sjin@usgs.gov","orcid":"https://orcid.org/0000-0001-9919-8077","contributorId":4397,"corporation":false,"usgs":true,"family":"Jin","given":"Suming","email":"sjin@usgs.gov","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true},{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"preferred":true,"id":447243,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70034726,"text":"70034726 - 2011 - Fundamental studies on kinetic isotope effect (KIE) of hydrogen isotope fractionation in natural gas systems","interactions":[],"lastModifiedDate":"2021-04-14T11:39:27.797137","indexId":"70034726","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1759,"text":"Geochimica et Cosmochimica Acta","active":true,"publicationSubtype":{"id":10}},"title":"Fundamental studies on kinetic isotope effect (KIE) of hydrogen isotope fractionation in natural gas systems","docAbstract":"<p><span>Based on&nbsp;quantum chemistry&nbsp;calculations for normal octane homolytic cracking, a kinetic&nbsp;hydrogen isotope&nbsp;fractionation model for methane, ethane, and&nbsp;propane&nbsp;formation is proposed. The activation energy differences between D-substitute and non-substituted methane, ethane, and propane are 318.6, 281.7, and 280.2</span><span>&nbsp;</span><span>cal/mol, respectively. In order to determine the effect of the entropy contribution for hydrogen isotopic substitution, a transition state for ethane bond rupture was determined based on density function theory (DFT) calculations. The kinetic&nbsp;isotope effect&nbsp;(KIE) associated with bond rupture in D and H substituted ethane results in a frequency factor ratio of 1.07. Based on the proposed&nbsp;mathematical model&nbsp;of hydrogen isotope fractionation, one can potentially quantify natural gas&nbsp;thermal maturity&nbsp;from measured hydrogen isotope values. Calculated gas maturity values determined by the proposed mathematical model using δD values in ethane from several basins in the world are in close agreement with similar predictions based on the δ</span><sup>13</sup><span>C composition of ethane. However, gas maturity values calculated from field data of methane and propane using both hydrogen and carbon kinetic isotopic models do not agree as closely. It is possible that δD values in methane may be affected by microbial mixing and that propane values might be more susceptible to hydrogen exchange with water or to analytical errors. Although the model used in this study is quite preliminary, the results demonstrate that kinetic isotope fractionation effects in hydrogen may be useful in quantitative models of natural gas generation, and that δD values in ethane might be more suitable for modeling than comparable values in methane and propane.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.gca.2011.02.016","issn":"00167037","usgsCitation":"Ni, Y., Ma, Q., Ellis, G., Dai, J., Katz, B., Zhang, S., and Tang, Y., 2011, Fundamental studies on kinetic isotope effect (KIE) of hydrogen isotope fractionation in natural gas systems: Geochimica et Cosmochimica Acta, v. 75, no. 10, p. 2696-2707, https://doi.org/10.1016/j.gca.2011.02.016.","productDescription":"12 p.","startPage":"2696","endPage":"2707","costCenters":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"links":[{"id":243451,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"75","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a1419e4b0c8380cd548e7","contributors":{"authors":[{"text":"Ni, Y.","contributorId":49204,"corporation":false,"usgs":true,"family":"Ni","given":"Y.","email":"","affiliations":[],"preferred":false,"id":447222,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ma, Q.","contributorId":78450,"corporation":false,"usgs":true,"family":"Ma","given":"Q.","email":"","affiliations":[],"preferred":false,"id":447224,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ellis, G.S. 0000-0003-4519-3320","orcid":"https://orcid.org/0000-0003-4519-3320","contributorId":91064,"corporation":false,"usgs":true,"family":"Ellis","given":"G.S.","affiliations":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":447225,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Dai, J.","contributorId":21781,"corporation":false,"usgs":true,"family":"Dai","given":"J.","email":"","affiliations":[],"preferred":false,"id":447220,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Katz, Brian","contributorId":33484,"corporation":false,"usgs":true,"family":"Katz","given":"Brian","affiliations":[],"preferred":false,"id":447221,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Zhang, S.","contributorId":51064,"corporation":false,"usgs":true,"family":"Zhang","given":"S.","email":"","affiliations":[],"preferred":false,"id":447223,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Tang, Y.","contributorId":104199,"corporation":false,"usgs":true,"family":"Tang","given":"Y.","affiliations":[],"preferred":false,"id":447226,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70034703,"text":"70034703 - 2011 - Testing earthquake source inversion methodologies","interactions":[],"lastModifiedDate":"2013-03-05T10:30:24","indexId":"70034703","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1578,"text":"Eos, Transactions, American Geophysical Union","onlineIssn":"2324-9250","printIssn":"0096-394","active":true,"publicationSubtype":{"id":10}},"title":"Testing earthquake source inversion methodologies","docAbstract":"Source Inversion Validation Workshop; Palm Springs, California, 11-12 September 2010; Nowadays earthquake source inversions are routinely performed after large earthquakes and represent a key connection between recorded seismic and geodetic data and the complex rupture process at depth. The resulting earthquake source models quantify the spatiotemporal evolution of ruptures. They are also used to provide a rapid assessment of the severity of an earthquake and to estimate losses. However, because of uncertainties in the data, assumed fault geometry and velocity structure, and chosen rupture parameterization, it is not clear which features of these source models are robust. Improved understanding of the uncertainty and reliability of earthquake source inversions will allow the scientific community to use the robust features of kinematic inversions to more thoroughly investigate the complexity of the rupture process and to better constrain other earthquakerelated computations, such as ground motion simulations and static stress change calculations.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Eos, Transactions American Geophysical Union","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"AGU","publisherLocation":"Washington, D.C.","doi":"10.1029/2011EO090007","issn":"00963941","usgsCitation":"Page, M., Mai, P., and Schorlemmer, D., 2011, Testing earthquake source inversion methodologies: Eos, Transactions, American Geophysical Union, v. 92, no. 9, p. 75-75, https://doi.org/10.1029/2011EO090007.","productDescription":"1 p.","startPage":"75","endPage":"75","costCenters":[],"links":[{"id":243609,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215784,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2011EO090007"}],"volume":"92","issue":"9","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba5c3e4b08c986b320c6d","contributors":{"authors":[{"text":"Page, M.","contributorId":67649,"corporation":false,"usgs":true,"family":"Page","given":"M.","email":"","affiliations":[],"preferred":false,"id":447117,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mai, P.M.","contributorId":32712,"corporation":false,"usgs":true,"family":"Mai","given":"P.M.","email":"","affiliations":[],"preferred":false,"id":447116,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Schorlemmer, D.","contributorId":30468,"corporation":false,"usgs":true,"family":"Schorlemmer","given":"D.","affiliations":[],"preferred":false,"id":447115,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70034680,"text":"70034680 - 2011 - Occupancy and abundance of wintering birds in a dynamic agricultural landscape","interactions":[],"lastModifiedDate":"2021-04-13T20:08:40.437726","indexId":"70034680","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Occupancy and abundance of wintering birds in a dynamic agricultural landscape","docAbstract":"<p><span>Effective monitoring programs are designed to track changes in the distribution, occurrence, and abundance of species. We developed an extension of Royle and Kéry's (2007) single species model to estimate simultaneously temporal changes in probabilities of detection, occupancy, colonization, extinction, and species turnover using data on calling anuran amphibians, collected from 2002 to 2006 in the Lower Mississippi Alluvial Valley of Louisiana, USA. During our 5‐year study, estimates of occurrence probabilities declined for all 12 species detected. These declines occurred primarily in conjunction with variation in estimates of local extinction probabilities (cajun chorus frog [</span><i>Pseudacris fouquettei</i><span>], spring peeper [</span><i>P. crucifer</i><span>], northern cricket frog [</span><i>Acris crepitans</i><span>], Cope's gray treefrog [</span><i>Hyla chrysoscelis</i><span>], green treefrog [</span><i>H. cinerea</i><span>], squirrel treefrog [</span><i>H. squirella</i><span>], southern leopard frog [</span><i>Lithobates sphenocephalus</i><span>], bronze frog [</span><i>L. clamitans</i><span>], American bullfrog [</span><i>L. catesbeianus</i><span>], and Fowler's toad [</span><i>Anaxyrus fowleri</i><span>]). For 2 species (eastern narrow‐mouthed toad [</span><i>Gastrophryne carolinensis</i><span>] and Gulf Coast toad [</span><i>Incilius nebulifer</i><span>]), declines in occupancy appeared to be a consequence of both increased local extinction and decreased colonization events. The eastern narrow‐mouthed toad experienced a 2.5‐fold increase in estimates of occupancy in 2004, possibly because of the high amount of rainfall received during that year, along with a decrease in extinction and increase in colonization of new sites between 2003 and 2004. Our model can be incorporated into monitoring programs to estimate simultaneously the occupancy dynamics for multiple species that show similar responses to ecological conditions. It will likely be an important asset for those monitoring programs that employ the same methods to sample assemblages of ecologically similar species, including those that are rare. By combining information from multiple species to decrease the variance on estimates of individual species, our results are advantageous compared to single‐species models. This feature enables managers and researchers to use an entire community, rather than just one species, as an ecological indicator in monitoring programs.</span></p>","language":"English","publisher":"The Wildlife Society","doi":"10.1002/jwmg.98","issn":"0022541X","usgsCitation":"Miller, M., Pearlstine, E., Dorazio, R., and Mazzotti, F., 2011, Occupancy and abundance of wintering birds in a dynamic agricultural landscape: Journal of Wildlife Management, v. 75, no. 4, p. 751-761, https://doi.org/10.1002/jwmg.98.","productDescription":"11 p.","startPage":"751","endPage":"761","costCenters":[],"links":[{"id":243760,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215924,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/jwmg.97"}],"volume":"75","issue":"4","noUsgsAuthors":false,"publicationDate":"2011-05-25","publicationStatus":"PW","scienceBaseUri":"505a6b17e4b0c8380cd744f2","contributors":{"authors":[{"text":"Miller, M.W.","contributorId":57012,"corporation":false,"usgs":true,"family":"Miller","given":"M.W.","email":"","affiliations":[],"preferred":false,"id":447017,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pearlstine, E.V.","contributorId":15857,"corporation":false,"usgs":true,"family":"Pearlstine","given":"E.V.","email":"","affiliations":[],"preferred":false,"id":447015,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dorazio, Robert 0000-0003-2663-0468 bob_dorazio@usgs.gov","orcid":"https://orcid.org/0000-0003-2663-0468","contributorId":172151,"corporation":false,"usgs":true,"family":"Dorazio","given":"Robert","email":"bob_dorazio@usgs.gov","affiliations":[{"id":5051,"text":"FLWSC-Orlando","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":447016,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mazzotti, F.J.","contributorId":10136,"corporation":false,"usgs":true,"family":"Mazzotti","given":"F.J.","email":"","affiliations":[],"preferred":false,"id":447014,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70034678,"text":"70034678 - 2011 - Potential effects of alpha-recoil on uranium-series dating of calcrete","interactions":[],"lastModifiedDate":"2013-07-26T12:53:12","indexId":"70034678","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1213,"text":"Chemical Geology","active":true,"publicationSubtype":{"id":10}},"title":"Potential effects of alpha-recoil on uranium-series dating of calcrete","docAbstract":"Evaluation of paleosol ages in the vicinity of Yucca Mountain, Nevada, at the time the site of a proposed high-level nuclear waste repository, is important for fault-displacement hazard assessment. Uranium-series isotope data were obtained for surface and subsurface calcrete samples from trenches and boreholes in Midway Valley, Nevada, adjacent to Yucca Mountain. <sup>230</sup>Th/U ages of 33 surface samples range from 1.3 to 423 thousand years (ka) and the back-calculated <sup>234</sup>U/<sup>238</sup>U initial activity ratios (AR) are relatively constant with a mean value of 1.54 ± 0.15 (1σ), which is consistent with the closed-system behavior. Subsurface calcrete samples are too old to be dated by the <sup>230</sup>Th/U method. U-Pb data for post-pedogenic botryoidal opal from a subsurface calcrete sample show that these subsurface calcrete samples are older than ~ 1.65 million years (Ma), old enough to have attained secular equilibrium had their U-Th systems remained closed. However, subsurface calcrete samples show U-series disequilibrium indicating open-system behavior of <sup>238</sup>U daughter isotopes, in contrast with the surface calcrete, where open-system behavior is not evident. Data for 21 subsurface calcrete samples yielded calculable <sup>234</sup>U/<sup>238</sup>U model ages ranging from 130 to 1875 ka (assuming an initial AR of 1.54 ± 0.15, the mean value calculated for the surface calcrete samples). A simple model describing continuous α-recoil loss predicts that the <sup>234</sup>U/<sup>238</sup>U and <sup>230</sup>Th/<sup>238</sup>U ARs reach steady-state values ~ 2 Ma after calcrete formation. Potential effects of open-system behavior on <sup>230</sup>Th/U ages and initial <sup>234</sup>U/<sup>238</sup>U ARs for younger surface calcrete were estimated using data for old subsurface calcrete samples with the <sup>234</sup>U loss and assuming that the total time of water-rock interaction is the only difference between these soils. The difference between the conventional closed-system and open-system ages may exceed errors of the calculated conventional ages for samples older than ~ 250 ka, but is negligible for younger soils.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Chemical Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.chemgeo.2011.01.013","issn":"00092541","usgsCitation":"Neymark, L., 2011, Potential effects of alpha-recoil on uranium-series dating of calcrete: Chemical Geology, v. 282, no. 3-4, p. 98-112, https://doi.org/10.1016/j.chemgeo.2011.01.013.","productDescription":"15 p.","startPage":"98","endPage":"112","costCenters":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":215895,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.chemgeo.2011.01.013"},{"id":243730,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"282","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7ec9e4b0c8380cd7a74d","contributors":{"authors":[{"text":"Neymark, L.A. 0000-0003-4190-0278","orcid":"https://orcid.org/0000-0003-4190-0278","contributorId":56673,"corporation":false,"usgs":true,"family":"Neymark","given":"L.A.","affiliations":[],"preferred":false,"id":447009,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70034676,"text":"70034676 - 2011 - Comparative phylogeography of a coevolved community: Concerted population expansions in Joshua trees and four Yucca moths","interactions":[],"lastModifiedDate":"2012-03-12T17:21:40","indexId":"70034676","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2980,"text":"PLoS ONE","active":true,"publicationSubtype":{"id":10}},"title":"Comparative phylogeography of a coevolved community: Concerted population expansions in Joshua trees and four Yucca moths","docAbstract":"Comparative phylogeographic studies have had mixed success in identifying common phylogeographic patterns among co-distributed organisms. Whereas some have found broadly similar patterns across a diverse array of taxa, others have found that the histories of different species are more idiosyncratic than congruent. The variation in the results of comparative phylogeographic studies could indicate that the extent to which sympatrically-distributed organisms share common biogeographic histories varies depending on the strength and specificity of ecological interactions between them. To test this hypothesis, we examined demographic and phylogeographic patterns in a highly specialized, coevolved community - Joshua trees (Yucca brevifolia) and their associated yucca moths. This tightly-integrated, mutually interdependent community is known to have experienced significant range changes at the end of the last glacial period, so there is a strong a priori expectation that these organisms will show common signatures of demographic and distributional changes over time. Using a database of >5000 GPS records for Joshua trees, and multi-locus DNA sequence data from the Joshua tree and four species of yucca moth, we combined paleaodistribution modeling with coalescent-based analyses of demographic and phylgeographic history. We extensively evaluated the power of our methods to infer past population size and distributional changes by evaluating the effect of different inference procedures on our results, comparing our palaeodistribution models to Pleistocene-aged packrat midden records, and simulating DNA sequence data under a variety of alternative demographic histories. Together the results indicate that these organisms have shared a common history of population expansion, and that these expansions were broadly coincident in time. However, contrary to our expectations, none of our analyses indicated significant range or population size reductions at the end of the last glacial period, and the inferred demographic changes substantially predate Holocene climate changes.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"PLoS ONE","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1371/journal.pone.0025628","issn":"19326203","usgsCitation":"Smith, C., Tank, S., Godsoe, W., Levenick, J., Strand, E., Esque, T., and Pellmyr, O., 2011, Comparative phylogeography of a coevolved community: Concerted population expansions in Joshua trees and four Yucca moths: PLoS ONE, v. 6, no. 10, https://doi.org/10.1371/journal.pone.0025628.","costCenters":[],"links":[{"id":475189,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1371/journal.pone.0025628","text":"Publisher Index Page"},{"id":215866,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1371/journal.pone.0025628"},{"id":243698,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6","issue":"10","noUsgsAuthors":false,"publicationDate":"2011-10-18","publicationStatus":"PW","scienceBaseUri":"5059f822e4b0c8380cd4ced7","contributors":{"authors":[{"text":"Smith, C.I.","contributorId":41670,"corporation":false,"usgs":true,"family":"Smith","given":"C.I.","email":"","affiliations":[],"preferred":false,"id":446999,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Tank, S.","contributorId":84179,"corporation":false,"usgs":true,"family":"Tank","given":"S.","email":"","affiliations":[],"preferred":false,"id":447001,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Godsoe, W.","contributorId":7106,"corporation":false,"usgs":true,"family":"Godsoe","given":"W.","affiliations":[],"preferred":false,"id":446997,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Levenick, J.","contributorId":59265,"corporation":false,"usgs":true,"family":"Levenick","given":"J.","affiliations":[],"preferred":false,"id":447000,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Strand, Espen","contributorId":91280,"corporation":false,"usgs":true,"family":"Strand","given":"Espen","email":"","affiliations":[],"preferred":false,"id":447002,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Esque, T.","contributorId":19893,"corporation":false,"usgs":true,"family":"Esque","given":"T.","affiliations":[],"preferred":false,"id":446998,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Pellmyr, O.","contributorId":98970,"corporation":false,"usgs":true,"family":"Pellmyr","given":"O.","affiliations":[],"preferred":false,"id":447003,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70034662,"text":"70034662 - 2011 - A distribution-based parameterization for improved tomographic imaging of solute plumes","interactions":[],"lastModifiedDate":"2020-01-11T10:07:06","indexId":"70034662","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1803,"text":"Geophysical Journal International","active":true,"publicationSubtype":{"id":10}},"title":"A distribution-based parameterization for improved tomographic imaging of solute plumes","docAbstract":"<p><span>Difference geophysical tomography (e.g. radar, resistivity and seismic) is used increasingly for imaging fluid flow and mass transport associated with natural and engineered hydrologic phenomena, including tracer experiments,&nbsp;</span><i>in situ</i><span>&nbsp;remediation and aquifer storage and recovery. Tomographic data are collected over time, inverted and differenced against a background image to produce ‘snapshots’ revealing changes to the system; these snapshots readily provide qualitative information on the location and morphology of plumes of injected tracer, remedial amendment or stored water. In principle, geometric moments (i.e. total mass, centres of mass, spread, etc.) calculated from difference tomograms can provide further quantitative insight into the rates of advection, dispersion and mass transfer; however, recent work has shown that moments calculated from tomograms are commonly biased, as they are strongly affected by the subjective choice of regularization criteria. Conventional approaches to regularization (Tikhonov) and parametrization (image pixels) result in tomograms which are subject to artefacts such as smearing or pixel estimates taking on the sign opposite to that expected for the plume under study. Here, we demonstrate a novel parametrization for imaging plumes associated with hydrologic phenomena. Capitalizing on the mathematical analogy between moment-based descriptors of plumes and the moment-based parameters of probability distributions, we design an inverse problem that (1) is overdetermined and computationally efficient because the image is described by only a few parameters, (2) produces tomograms consistent with expected plume behaviour (e.g. changes of one sign relative to the background image), (3) yields parameter estimates that are readily interpreted for plume morphology and offer direct insight into hydrologic processes and (4) requires comparatively few data to achieve reasonable model estimates. We demonstrate the approach in a series of numerical examples based on straight-ray difference-attenuation radar monitoring of the transport of an ionic tracer, and show that the methodology outlined here is particularly effective when limited data are available.</span></p>","language":"English","publisher":"Oxford Academic","doi":"10.1111/j.1365-246X.2011.05131.x","issn":"0956540X","usgsCitation":"Pidlisecky, A., Singha, K., and Day-Lewis, F., 2011, A distribution-based parameterization for improved tomographic imaging of solute plumes: Geophysical Journal International, v. 187, no. 1, p. 214-224, https://doi.org/10.1111/j.1365-246X.2011.05131.x.","productDescription":"11 p.","startPage":"214","endPage":"224","numberOfPages":"11","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":475438,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1365-246x.2011.05131.x","text":"Publisher Index Page"},{"id":243480,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"187","issue":"1","noUsgsAuthors":false,"publicationDate":"2011-08-19","publicationStatus":"PW","scienceBaseUri":"5059e3c3e4b0c8380cd461ec","contributors":{"authors":[{"text":"Pidlisecky, Adam","contributorId":94877,"corporation":false,"usgs":true,"family":"Pidlisecky","given":"Adam","email":"","affiliations":[],"preferred":false,"id":446926,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Singha, K.","contributorId":51431,"corporation":false,"usgs":true,"family":"Singha","given":"K.","affiliations":[],"preferred":false,"id":446925,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Day-Lewis, F. D. 0000-0003-3526-886X","orcid":"https://orcid.org/0000-0003-3526-886X","contributorId":35773,"corporation":false,"usgs":true,"family":"Day-Lewis","given":"F. D.","affiliations":[],"preferred":false,"id":446924,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70034659,"text":"70034659 - 2011 - Algal bioassessment metrics for wadeable streams and rivers of Maine, USA","interactions":[],"lastModifiedDate":"2021-04-14T15:33:29.101115","indexId":"70034659","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1699,"text":"Freshwater Science","active":true,"publicationSubtype":{"id":10}},"title":"Algal bioassessment metrics for wadeable streams and rivers of Maine, USA","docAbstract":"<p><span>Many state water-quality agencies use biological assessment methods based on lotic fish and macroinvertebrate communities, but relatively few states have incorporated algal multimetric indices into monitoring programs. Algae are good indicators for monitoring water quality because they are sensitive to many environmental stressors. We evaluated benthic algal community attributes along a landuse gradient affecting wadeable streams and rivers in Maine, USA, to identify potential bioassessment metrics. We collected epilithic algal samples from 193 locations across the state. We computed weighted-average optima for common taxa for total P, total N, specific conductance, % impervious cover, and % developed watershed, which included all land use that is no longer forest or wetland. We assigned Maine stream tolerance values and categories (sensitive, intermediate, tolerant) to taxa based on their optima and responses to watershed disturbance. We evaluated performance of algal community metrics used in multimetric indices from other regions and novel metrics based on Maine data. Metrics specific to Maine data, such as the relative richness of species characterized as being sensitive in Maine, were more correlated with % developed watershed than most metrics used in other regions. Few community-structure attributes (e.g., species richness) were useful metrics in Maine. Performance of algal bioassessment models would be improved if metrics were evaluated with attributes of local data before inclusion in multimetric indices or statistical models.</span></p>","language":"English","publisher":"University of Chicago Press","doi":"10.1899/10-162.1","issn":"08873593","usgsCitation":"Danielson, T.J., Loftin, C., Tsomides, L., DiFranco, J.L., and Connors, B., 2011, Algal bioassessment metrics for wadeable streams and rivers of Maine, USA: Freshwater Science, v. 30, no. 4, p. 1033-1048, https://doi.org/10.1899/10-162.1.","productDescription":"16 p.","startPage":"1033","endPage":"1048","numberOfPages":"16","ipdsId":"IP-025908","costCenters":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true}],"links":[{"id":243413,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215599,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1899/10-162.1"}],"country":"United 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Leonidas","contributorId":195762,"corporation":false,"usgs":false,"family":"Tsomides","given":"Leonidas","email":"","affiliations":[],"preferred":false,"id":446900,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"DiFranco, Jeanne L.","contributorId":195763,"corporation":false,"usgs":false,"family":"DiFranco","given":"Jeanne","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":446898,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Connors, Beth","contributorId":195764,"corporation":false,"usgs":false,"family":"Connors","given":"Beth","email":"","affiliations":[],"preferred":false,"id":446902,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70034653,"text":"70034653 - 2011 - Simultaneous speciation of arsenic, selenium, and chromium: Species stability, sample preservation, and analysis of ash and soil leachates","interactions":[],"lastModifiedDate":"2021-04-15T11:54:12.104638","indexId":"70034653","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":764,"text":"Analytical and Bioanalytical Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Simultaneous speciation of arsenic, selenium, and chromium: Species stability, sample preservation, and analysis of ash and soil leachates","docAbstract":"<p><span>An analytical method using high-performance liquid chromatography separation with inductively coupled plasma mass spectrometry (ICP-MS) detection previously developed for the determination of Cr(III) and Cr(VI) has been adapted to allow the determination of As(III), As(V), Se(IV), Se(VI), Cr(III), and Cr(VI) under the same chromatographic conditions. Using this method, all six inorganic species can be determined in less than 3&nbsp;min. A dynamic reaction cell (DRC)–ICP-MS system was used to detect the species eluted from the chromatographic column in order to reduce interferences. A variety of reaction cell gases and conditions may be utilized with the DRC–ICP-MS, and final selection of conditions is determined by data quality objectives. Results indicated all starting standards, reagents, and sample vials should be thoroughly tested for contamination. Tests on species stability indicated that refrigeration at 10&nbsp;°C was preferential to freezing for most species, particularly when all species were present, and that sample solutions and extracts should be analyzed as soon as possible to eliminate species instability and interconversion effects. A variety of environmental and geological samples, including waters and deionized water [leachates] and simulated biological leachates from soils and wildfire ashes have been analyzed using this method. Analytical spikes performed on each sample were used to evaluate data quality. Speciation analyses were conducted on deionized water leachates and simulated lung fluid leachates of ash and soils impacted by wildfires. These results show that, for leachates containing high levels of total Cr, the majority of the chromium was present in the hexavalent Cr(VI) form. In general, total and hexavalent chromium levels for samples taken from burned residential areas were higher than those obtained from non-residential forested areas. Arsenic, when found, was generally in the more oxidized As(V) form. Selenium (IV) and (VI) were present, but typically at low levels.</span></p>","language":"English","publisher":"Springer","doi":"10.1007/s00216-011-5275-x","issn":"16182642","usgsCitation":"Wolf, R., Morman, S., Hageman, P., Hoefen, T., and Plumlee, G., 2011, Simultaneous speciation of arsenic, selenium, and chromium: Species stability, sample preservation, and analysis of ash and soil leachates: Analytical and Bioanalytical Chemistry, v. 401, no. 9, p. 2733-2745, https://doi.org/10.1007/s00216-011-5275-x.","productDescription":"13 p.","startPage":"2733","endPage":"2745","numberOfPages":"13","costCenters":[],"links":[{"id":243850,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"401","issue":"9","noUsgsAuthors":false,"publicationDate":"2011-08-12","publicationStatus":"PW","scienceBaseUri":"505b90d6e4b08c986b31969e","contributors":{"authors":[{"text":"Wolf, R.E.","contributorId":11827,"corporation":false,"usgs":true,"family":"Wolf","given":"R.E.","email":"","affiliations":[],"preferred":false,"id":446873,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Morman, S.A.","contributorId":74982,"corporation":false,"usgs":true,"family":"Morman","given":"S.A.","affiliations":[],"preferred":false,"id":446876,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hageman, P.  L. 0000-0002-3440-2150","orcid":"https://orcid.org/0000-0002-3440-2150","contributorId":27459,"corporation":false,"usgs":true,"family":"Hageman","given":"P.  L.","affiliations":[],"preferred":false,"id":446875,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hoefen, T.M. 0000-0002-3083-5987","orcid":"https://orcid.org/0000-0002-3083-5987","contributorId":18143,"corporation":false,"usgs":true,"family":"Hoefen","given":"T.M.","affiliations":[],"preferred":false,"id":446874,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Plumlee, G.S.","contributorId":80698,"corporation":false,"usgs":true,"family":"Plumlee","given":"G.S.","email":"","affiliations":[],"preferred":false,"id":446877,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70034650,"text":"70034650 - 2011 - Sex-related differences in habitat associations of wintering American Kestrels in California's Central Valley","interactions":[],"lastModifiedDate":"2021-04-14T16:45:27.655447","indexId":"70034650","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2442,"text":"Journal of Raptor Research","active":true,"publicationSubtype":{"id":10}},"title":"Sex-related differences in habitat associations of wintering American Kestrels in California's Central Valley","docAbstract":"<p><span>We used roadside survey data collected from 19 routes over three consecutive winters from 2007–08 to 2009–10 to compare habitat associations of male and female American Kestrels (</span><span class=\"genus-species\">Falco sparverius</span><span>) in the Central Valley of California to determine if segregation by sex was evident across this region. As a species, American Kestrels showed positive associations with alfalfa and other forage crops like hay and winter wheat, as well as grassland, irrigated pasture, and rice. Habitat associations of females were similar, with female densities in all these habitats except rice significantly higher than average. Male American Kestrels showed a positive association only with grassland and were present at densities well below those of females in alfalfa, other forage crops, and grassland. Males were present in higher densities than females in most habitats with negative associations for the species, such as orchards, urbanized areas, and oak savannah. The ratio of females to males for each route was positively correlated with the overall density of American Kestrels on that route. Our findings that females seem to occupy higher quality habitats in winter are consistent with observations from elsewhere in North America.</span></p>","language":"English","publisher":"BioOne","doi":"10.3356/JRR-10-66.1","issn":"08921016","usgsCitation":"Pandolfino, E., Herzog, M., and Smith, Z., 2011, Sex-related differences in habitat associations of wintering American Kestrels in California's Central Valley: Journal of Raptor Research, v. 45, no. 3, p. 236-243, https://doi.org/10.3356/JRR-10-66.1.","productDescription":"8 p.","startPage":"236","endPage":"243","costCenters":[],"links":[{"id":475446,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.3356/jrr-10-66.1","text":"Publisher Index Page"},{"id":243789,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215952,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.3356/JRR-10-66.1"}],"country":"United States","state":"California","otherGeospatial":"Central Valley","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -120.234375,\n              35.782170703266075\n            ],\n            [\n              -117.42187500000001,\n              33.65120829920497\n            ],\n            [\n              -116.806640625,\n              33.063924198120645\n            ],\n            [\n              -115.04882812499999,\n              34.23451236236987\n            ],\n            [\n              -119.970703125,\n              37.996162679728116\n            ],\n            [\n              -121.55273437499999,\n              40.27952566881291\n            ],\n            [\n              -122.431640625,\n              40.91351257612758\n            ],\n            [\n              -123.31054687499999,\n              40.51379915504413\n            ],\n            [\n              -121.59667968749999,\n              37.020098201368114\n            ],\n            [\n              -120.234375,\n              35.782170703266075\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"45","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8dafe4b08c986b3184d9","contributors":{"authors":[{"text":"Pandolfino, E.R.","contributorId":65299,"corporation":false,"usgs":true,"family":"Pandolfino","given":"E.R.","affiliations":[],"preferred":false,"id":446865,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Herzog, M.P.","contributorId":37865,"corporation":false,"usgs":true,"family":"Herzog","given":"M.P.","email":"","affiliations":[],"preferred":false,"id":446863,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Smith, Z.","contributorId":53192,"corporation":false,"usgs":true,"family":"Smith","given":"Z.","email":"","affiliations":[],"preferred":false,"id":446864,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70034647,"text":"70034647 - 2011 - Growth rates of rainbow smelt in Lake Champlain: Effects of density and diet","interactions":[],"lastModifiedDate":"2021-04-14T16:48:35.176951","indexId":"70034647","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1471,"text":"Ecology of Freshwater Fish","active":true,"publicationSubtype":{"id":10}},"title":"Growth rates of rainbow smelt in Lake Champlain: Effects of density and diet","docAbstract":"<p><span>We estimated the densities of rainbow smelt (</span><i>Osmerus mordax</i><span>) using hydroacoustics and obtained specimens for diet analysis and groundtruthed acoustics data from mid‐water trawl sampling in four areas of Lake Champlain, USA–Canada. Densities of rainbow smelt cohorts alternated during the 2‐year study; age‐0 rainbow smelt were very abundant in 2001 (up to 6 fish per m</span><sup>2</sup><span>) and age‐1 and older were abundant (up to 1.2 fish per m</span><sup>2</sup><span>) in 2002. Growth rates and densities varied among areas and years. We used model selection on eight area–year‐specific variables to investigate biologically plausible predictors of rainbow smelt growth rates. The best supported model of growth rates of age‐0 smelt indicated a negative relationship with age‐0 density, likely associated with intraspecific competition for zooplankton. The next best‐fit model had age‐1 density as a predictor of age‐0 growth. The best supported models (</span><i>N </i><span>= 4) of growth rates of age‐1 fish indicated a positive relationship with availability of age‐0 smelt and resulting levels of cannibalism. Other plausible models were contained variants of these parameters. Cannibalistic rainbow smelt consumed younger conspecifics that were up to 53% of their length. Prediction of population dynamics for rainbow smelt requires an understanding of the relationship between density and growth as age‐0 fish outgrow their main predators (adult smelt) by autumn in years with fast growth rates, but not in years with slow growth rates.</span></p>","language":"English","publisher":"Wiley","doi":"10.1111/j.1600-0633.2010.00472.x","issn":"09066691","usgsCitation":"Stritzel, T.J., Parrish, D., Parker-Stetter, S.L., Rudstam, L.G., and Sullivan, P., 2011, Growth rates of rainbow smelt in Lake Champlain: Effects of density and diet: Ecology of Freshwater Fish, v. 20, no. 4, p. 503-512, https://doi.org/10.1111/j.1600-0633.2010.00472.x.","productDescription":"10p.","startPage":"503","endPage":"512","numberOfPages":"10","costCenters":[],"links":[{"id":243758,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215922,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1600-0633.2010.00472.x"}],"country":"United States","state":"New York, Vermont","otherGeospatial":"Lake Champlain","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -73.8446044921875,\n              43.401056495052906\n            ],\n            [\n              -72.94921875,\n              43.401056495052906\n            ],\n            [\n              -72.94921875,\n              45.34056313889858\n            ],\n            [\n              -73.8446044921875,\n              45.34056313889858\n            ],\n            [\n              -73.8446044921875,\n              43.401056495052906\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"20","issue":"4","noUsgsAuthors":false,"publicationDate":"2010-11-24","publicationStatus":"PW","scienceBaseUri":"505a2e06e4b0c8380cd5c233","contributors":{"authors":[{"text":"Stritzel, Thomson J.L.","contributorId":30024,"corporation":false,"usgs":true,"family":"Stritzel","given":"Thomson","email":"","middleInitial":"J.L.","affiliations":[],"preferred":false,"id":446850,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Parrish, D.L.","contributorId":15144,"corporation":false,"usgs":true,"family":"Parrish","given":"D.L.","email":"","affiliations":[],"preferred":false,"id":446848,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Parker-Stetter, S. L.","contributorId":98136,"corporation":false,"usgs":true,"family":"Parker-Stetter","given":"S.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":446852,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Rudstam, L. G.","contributorId":24720,"corporation":false,"usgs":true,"family":"Rudstam","given":"L.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":446849,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Sullivan, P.J.","contributorId":38762,"corporation":false,"usgs":true,"family":"Sullivan","given":"P.J.","email":"","affiliations":[],"preferred":false,"id":446851,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
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