{"pageNumber":"952","pageRowStart":"23775","pageSize":"25","recordCount":40807,"records":[{"id":70031370,"text":"70031370 - 2007 - Cross-calibration of the Terra MODIS, Landsat 7 ETM+ and EO-1 ALI sensors using near-simultaneous surface observation over the Railroad Valley Playa, Nevada, test site","interactions":[],"lastModifiedDate":"2024-09-17T15:06:35.171594","indexId":"70031370","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Cross-calibration of the Terra MODIS, Landsat 7 ETM+ and EO-1 ALI sensors using near-simultaneous surface observation over the Railroad Valley Playa, Nevada, test site","docAbstract":"A cross-calibration methodology has been developed using coincident image pairs from the Terra Moderate Resolution Imaging Spectroradiometer (MODIS), the Landsat 7 (L7) Enhanced Thematic Mapper Plus (ETM+) and the Earth Observing EO-1 Advanced Land Imager (ALI) to verify the absolute radiometric calibration accuracy of these sensors with respect to each other. To quantify the effects due to different spectral responses, the Relative Spectral Responses (RSR) of these sensors were studied and compared by developing a set of \"figures-of-merit.\" Seven cloud-free scenes collected over the Railroad Valley Playa, Nevada (RVPN), test site were used to conduct the cross-calibration study. This cross-calibration approach was based on image statistics from near-simultaneous observations made by different satellite sensors. Homogeneous regions of interest (ROI) were selected in the image pairs, and the mean target statistics were converted to absolute units of at-sensor reflectance. Using these reflectances, a set of cross-calibration equations were developed giving a relative gain and bias between the sensor pair.","conferenceTitle":"Earth Observing Systems XII","conferenceDate":"August 26-28, 2007","conferenceLocation":"San Diego, CA","language":"English","doi":"10.1117/12.734292","issn":"0277786X","isbn":"9780819468253","usgsCitation":"Chander, G., Angal, A., Choi, T., Meyer, D.J., Xiong, X., and Teillet, P., 2007, Cross-calibration of the Terra MODIS, Landsat 7 ETM+ and EO-1 ALI sensors using near-simultaneous surface observation over the Railroad Valley Playa, Nevada, test site, Earth Observing Systems XII, v. 6677, San Diego, CA, August 26-28, 2007, 66770Y, 12 p., https://doi.org/10.1117/12.734292.","productDescription":"66770Y, 12 p.","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":239786,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6677","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fcc1e4b0c8380cd4e400","contributors":{"authors":[{"text":"Chander, G.","contributorId":51449,"corporation":false,"usgs":true,"family":"Chander","given":"G.","affiliations":[],"preferred":false,"id":431230,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Angal, A.","contributorId":52716,"corporation":false,"usgs":true,"family":"Angal","given":"A.","affiliations":[],"preferred":false,"id":431231,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Choi, T.","contributorId":48698,"corporation":false,"usgs":true,"family":"Choi","given":"T.","affiliations":[],"preferred":false,"id":431229,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Meyer, D. J.","contributorId":46721,"corporation":false,"usgs":true,"family":"Meyer","given":"D.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":431228,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Xiong, X.","contributorId":37885,"corporation":false,"usgs":true,"family":"Xiong","given":"X.","affiliations":[],"preferred":false,"id":431227,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Teillet, P.M.","contributorId":23717,"corporation":false,"usgs":true,"family":"Teillet","given":"P.M.","email":"","affiliations":[],"preferred":false,"id":431226,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70031836,"text":"70031836 - 2007 - Pumping-induced drawdown and stream depletion in a leaky aquifer system","interactions":[],"lastModifiedDate":"2012-03-12T17:21:25","indexId":"70031836","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1861,"text":"Ground Water","active":true,"publicationSubtype":{"id":10}},"title":"Pumping-induced drawdown and stream depletion in a leaky aquifer system","docAbstract":"The impact of ground water pumping on nearby streams is often estimated using analytic models of the interconnected stream-aquifer system. A common assumption of these models is that the pumped aquifer is underlain by an impermeable formation. A new semianalytic solution for drawdown and stream depletion has been developed that does not require this assumption. This solution shows that pumping-induced flow (leakage) through an underlying aquitard can be an important recharge mechanism in many stream-aquifer systems. The relative importance of this source of recharge increases with the distance between the pumping well and the stream. The distance at which leakage becomes the primary component of the pumping-induced recharge depends on the specific properties of the aquifer, aquitard, and streambed. Even when the aquitard is orders of magnitude less transmissive than the aquifer, leakage can be an important recharge mechanism because of the large surface area over which it occurs. Failure to consider aquitard leakage can lead to large overestimations of both the drawdown produced by pumping and the contribution of stream depletion to the pumping-induced recharge. The ramifications for water resources management and water rights adjudication can be significant. A hypothetical example helps illustrate these points and demonstrates that more attention should be given to estimating the properties of aquitards underlying stream-aquifer systems. The solution presented here should serve as a relatively simple but versatile tool for practical assessments of pumping-induced stream-aquifer interactions. However, this solution should not be used for such assessments without site-specific data that indicate pumping has induced leakage through the aquitard. ?? 2006 National Ground Water Association.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ground Water","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1745-6584.2006.00272.x","issn":"0017467X","usgsCitation":"Butler, J., Zhan, X., and Zlotnik, V., 2007, Pumping-induced drawdown and stream depletion in a leaky aquifer system: Ground Water, v. 45, no. 2, p. 178-186, https://doi.org/10.1111/j.1745-6584.2006.00272.x.","startPage":"178","endPage":"186","numberOfPages":"9","costCenters":[],"links":[{"id":487033,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://digitalcommons.unl.edu/geosciencefacpub/275","text":"External Repository"},{"id":215044,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1745-6584.2006.00272.x"},{"id":242813,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"45","issue":"2","noUsgsAuthors":false,"publicationDate":"2006-11-30","publicationStatus":"PW","scienceBaseUri":"505a9038e4b0c8380cd7fbe1","contributors":{"authors":[{"text":"Butler, J.J. Jr.","contributorId":12194,"corporation":false,"usgs":true,"family":"Butler","given":"J.J.","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":433357,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Zhan, X.","contributorId":26477,"corporation":false,"usgs":true,"family":"Zhan","given":"X.","email":"","affiliations":[],"preferred":false,"id":433358,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Zlotnik, V.A.","contributorId":102660,"corporation":false,"usgs":true,"family":"Zlotnik","given":"V.A.","email":"","affiliations":[],"preferred":false,"id":433359,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031374,"text":"70031374 - 2007 - Finite-frequency traveltime tomography of San Francisco Bay region crustal velocity structure","interactions":[],"lastModifiedDate":"2023-07-20T11:16:06.730061","indexId":"70031374","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Finite-frequency traveltime tomography of San Francisco Bay region crustal velocity structure","docAbstract":"<p class=\"chapter-para\">Seismic velocity structure of the San Francisco Bay region crust is derived using measurements of finite-frequency traveltimes. A total of 57 801 relative traveltimes are measured by cross-correlation over the frequency range 0.5–1.5 Hz. From these are derived 4862 ‘summary’ traveltimes, which are used to derive 3-D<span>&nbsp;</span><i>P</i>-wave velocity structure over a 341 × 140 km<sup>2</sup><span>&nbsp;</span>area from the surface to 25 km depth. The seismic tomography is based on sensitivity kernels calculated on a spherically symmetric reference model. Robust elements of the derived<span>&nbsp;</span><i>P</i>-wave velocity structure are: a pronounced velocity contrast across the San Andreas fault in the south Bay region (west side faster); a moderate velocity contrast across the Hayward fault (west side faster); moderately low velocity crust around the Quien Sabe volcanic field and the Sacramento River delta; very low velocity crust around Lake Berryessa. These features are generally explicable with surface rock types being extrapolated to depth ∼10 km in the upper crust. Generally high mid-lower crust velocity and high inferred Poisson's ratio suggest a mafic lower crust.</p>","language":"English","publisher":"Oxford Academic","doi":"10.1111/j.1365-246X.2007.03532.x","issn":"0956540X","usgsCitation":"Pollitz, F., 2007, Finite-frequency traveltime tomography of San Francisco Bay region crustal velocity structure: Geophysical Journal International, v. 171, no. 2, p. 630-656, https://doi.org/10.1111/j.1365-246X.2007.03532.x.","productDescription":"27 p.","startPage":"630","endPage":"656","numberOfPages":"27","costCenters":[],"links":[{"id":239853,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"San Francisco Bay region","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -123.44690589033075,\n              38.695260367185796\n            ],\n            [\n              -123.44690589033075,\n              36.92551991847962\n            ],\n            [\n              -121.2505826039804,\n              36.92551991847962\n            ],\n            [\n              -121.2505826039804,\n              38.695260367185796\n            ],\n            [\n              -123.44690589033075,\n              38.695260367185796\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"171","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a1030e4b0c8380cd53b7e","contributors":{"authors":[{"text":"Pollitz, F. F.","contributorId":108280,"corporation":false,"usgs":true,"family":"Pollitz","given":"F. F.","affiliations":[],"preferred":false,"id":431246,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70031808,"text":"70031808 - 2007 - Why the sacramento delta area differs from other parts of the great valley: numerical modeling of thermal structure and thermal subsidence of forearc basins","interactions":[],"lastModifiedDate":"2014-09-09T10:49:37","indexId":"70031808","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2125,"text":"Izvestiya, Physics of the Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Why the sacramento delta area differs from other parts of the great valley: numerical modeling of thermal structure and thermal subsidence of forearc basins","docAbstract":"<p>Data on present-day heat flow, subsidence history, and paleotemperature for the Sacramento Delta region, California, have been employed to constrain a numerical model of tectonic subsidence and thermal evolution of forearc basins. The model assumes an oceanic basement with an initial thermal profile dependent on its age subjected to refrigeration caused by a subducting slab. Subsidence in the Sacramento Delta region appears to be close to that expected for a forearc basin underlain by normal oceanic lithosphere of age 150 Ma, demonstrating that effects from both the initial thermal profile and the subduction process are necessary and sufficient. Subsidence at the eastern and northern borders of the Sacramento Valley is considerably less, approximating subsidence expected from the dynamics of the subduction zone alone. These results, together with other geophysical data, show that Sacramento Delta lithosphere, being thinner and having undergone deeper subsidence, must differ from lithosphere of the transitional type under other parts of the Sacramento Valley. Thermal modeling allows evaluation of the rheological properties of the lithosphere. Strength diagrams based on our thermal model show that, even under relatively slow deformation (10<sup>−17</sup> s<sup>−1</sup>), the upper part of the delta crystalline crust (down to 20–22 km) can fail in brittle fashion, which is in agreement with deeper earthquake occurrence. Hypocentral depths of earthquakes under the Sacramento Delta region extend to nearly 20 km, whereas, in the Coast Ranges to the west, depths are typically less than 12–15 km. The greater width of the seismogenic zone in this area raises the possibility that, for fault segments of comparable length, earthquakes of somewhat greater magnitude might occur than in the Coast Ranges to the west.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Izvestiya, Physics of the Solid Earth","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Springer","doi":"10.1134/S1069351307010089","issn":"10693513","usgsCitation":"Mikhailov, V., Parsons, T., Simpson, R., Timoshkina, E., and Williams, C., 2007, Why the sacramento delta area differs from other parts of the great valley: numerical modeling of thermal structure and thermal subsidence of forearc basins: Izvestiya, Physics of the Solid Earth, v. 43, no. 1, p. 75-90, https://doi.org/10.1134/S1069351307010089.","productDescription":"16 p.","startPage":"75","endPage":"90","numberOfPages":"16","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":212254,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1134/S1069351307010089"},{"id":239714,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Great Valley","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -122.0,36.0 ], [ -122.0,40.0 ], [ -120.0,40.0 ], [ -120.0,36.0 ], [ -122.0,36.0 ] ] ] } } ] }","volume":"43","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bd0a6e4b08c986b32efa7","contributors":{"authors":[{"text":"Mikhailov, V.O.","contributorId":101455,"corporation":false,"usgs":true,"family":"Mikhailov","given":"V.O.","email":"","affiliations":[],"preferred":false,"id":433216,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Parsons, T.","contributorId":48288,"corporation":false,"usgs":true,"family":"Parsons","given":"T.","email":"","affiliations":[],"preferred":false,"id":433213,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Simpson, R.W.","contributorId":76738,"corporation":false,"usgs":true,"family":"Simpson","given":"R.W.","email":"","affiliations":[],"preferred":false,"id":433214,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Timoshkina, E.P.","contributorId":79295,"corporation":false,"usgs":true,"family":"Timoshkina","given":"E.P.","email":"","affiliations":[],"preferred":false,"id":433215,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Williams, C.","contributorId":10514,"corporation":false,"usgs":true,"family":"Williams","given":"C.","affiliations":[],"preferred":false,"id":433212,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70031803,"text":"70031803 - 2007 - Individual dietary specialization and dive behaviour in the California sea otter: Using archival time-depth data to detect alternative foraging strategies","interactions":[],"lastModifiedDate":"2012-03-12T17:21:06","indexId":"70031803","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1371,"text":"Deep-Sea Research Part II: Topical Studies in Oceanography","active":true,"publicationSubtype":{"id":10}},"title":"Individual dietary specialization and dive behaviour in the California sea otter: Using archival time-depth data to detect alternative foraging strategies","docAbstract":"The existence of individual prey specializations has been reported for an ever-growing number of taxa, and has important ramifications for our understanding of predator-prey dynamics. We use the California sea otter population as a case study to validate the use of archival time-depth data to detect and measure differences in foraging behaviour and diet. We collected observational foraging data from radio-tagged sea otters that had been equipped with Mk9 time depth recorders (TDRs, Wildlife Computers, Redmond, WA). After recapturing the study animals and retrieving the TDRs it was possible to compare the two data types, by matching individual dives from the TDR record with observational data and thus examining behavioural correlates of capture success and prey species. Individuals varied with respect to prey selection, aggregating into one of three distinct dietary specializations. A number of TDR-derived parameters, particularly dive depth and post-dive surface interval, differed predictably between specialist types. A combination of six dive parameters was particularly useful for discriminating between specialist types, and when incorporated into a multivariate cluster analysis, these six parameters resulted in classification of 13 adult female sea otters into three clusters that corresponded almost perfectly to the diet-based classification (1 out of 13 animals was misclassified). Thus based solely on quantifiable traits of time-depth data that have been collected over an appropriate period (in this case 1 year per animal), it was possible to assign female sea otters to diet type with >90% accuracy. TDR data can thus be used as a tool to measure the degree of individual specialization in sea otter populations, a conclusion that will likely apply to other diving marine vertebrates as well. Our ultimate goals must be both to understand the causes of individual specialization, and to incorporate such variation into models of population- and community-level food web dynamics. ?? 2007 Elsevier Ltd. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Deep-Sea Research Part II: Topical Studies in Oceanography","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.dsr2.2006.11.012","issn":"09670645","usgsCitation":"Tinker, M.T., Costa, D., Estes, J.A., and Wieringa, N., 2007, Individual dietary specialization and dive behaviour in the California sea otter: Using archival time-depth data to detect alternative foraging strategies: Deep-Sea Research Part II: Topical Studies in Oceanography, v. 54, no. 3-4, p. 330-342, https://doi.org/10.1016/j.dsr2.2006.11.012.","startPage":"330","endPage":"342","numberOfPages":"13","costCenters":[],"links":[{"id":212642,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.dsr2.2006.11.012"},{"id":240158,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"54","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3a9ce4b0c8380cd61e05","contributors":{"authors":[{"text":"Tinker, M. T. 0000-0002-3314-839X","orcid":"https://orcid.org/0000-0002-3314-839X","contributorId":54152,"corporation":false,"usgs":false,"family":"Tinker","given":"M.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":433197,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Costa, D.P.","contributorId":29210,"corporation":false,"usgs":true,"family":"Costa","given":"D.P.","affiliations":[],"preferred":false,"id":433195,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Estes, J. A.","contributorId":53319,"corporation":false,"usgs":true,"family":"Estes","given":"J.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":433196,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wieringa, N.","contributorId":99372,"corporation":false,"usgs":true,"family":"Wieringa","given":"N.","email":"","affiliations":[],"preferred":false,"id":433198,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031378,"text":"70031378 - 2007 - Postearthquake relaxation and aftershock accumulation linearly related after the 2003 M 6.5 Chengkung, Taiwan, and the 2004 M 6.0 Parkfield, California, earthquakes","interactions":[],"lastModifiedDate":"2023-07-24T11:08:50.253038","indexId":"70031378","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"Postearthquake relaxation and aftershock accumulation linearly related after the 2003 M 6.5 Chengkung, Taiwan, and the 2004 M 6.0 Parkfield, California, earthquakes","docAbstract":"<div id=\"16137073\" class=\"article-section-wrapper js-article-section js-content-section  \" data-section-parent-id=\"0\"><p>We treat both the number of earthquakes and the deformation following a mainshock as the superposition of a steady background accumulation and the postearthquake process. The preseismic displacement and seismicity rates<span>&nbsp;</span><i>r<sub>u</sub></i><span>&nbsp;</span>and<span>&nbsp;</span><i>r<sub>E</sub></i><span>&nbsp;</span>are used as estimates of the background rates. Let<span>&nbsp;</span><i>t</i><span>&nbsp;</span>be the time after the mainshock,<span>&nbsp;</span><i>u</i>(<i>t</i>) +<span>&nbsp;</span><i>u</i><sub>0</sub><span>&nbsp;</span>the postseismic displacement less the background accumulation<span>&nbsp;</span><i>r<sub>u</sub>t</i>, and Δ<i>N</i>(<i>t</i>) the observed cumulative number of postseismic earthquakes less the background accumulation<span>&nbsp;</span><i>r<sub>E</sub>t</i>. For the first 160 days (duration limited by the occurrence of another nearby earthquake) following the Chengkung (<i>M</i><span>&nbsp;</span>6.5, 10 December 2003, eastern Taiwan) and the first 560 days following the Parkfield (<i>M</i><span>&nbsp;</span>6.0, 28 September 2004, central California) earthquakes<span>&nbsp;</span><i>u</i>(<i>t</i>) +<span>&nbsp;</span><i>u</i><sub>0</sub><span>&nbsp;</span>is a linear function of Δ<i>N</i>(<i>t</i>). The aftershock accumulation Δ<i>N</i>(<i>t</i>) for both earthquakes is described by the modified Omori Law<span>&nbsp;</span><i>d</i>Δ<i>N</i>/<i>dt</i><span>&nbsp;</span>∝ (1 +<span>&nbsp;</span><i>t</i>/<i>τ</i>)<sup>−<i>p</i></sup><span>&nbsp;</span>with<span>&nbsp;</span><i>p</i><span>&nbsp;</span>= 0.96 and<span>&nbsp;</span><i>τ</i><span>&nbsp;</span>= 0.03 days. Although the Chengkung earthquake involved sinistral, reverse slip on a moderately dipping fault and the Parkfield earthquake right-lateral slip on a near-vertical fault, the earthquakes share an unusual feature: both occurred on faults exhibiting interseismic fault creep at the surface. The source of the observed postseismic deformation appears to be afterslip on the coseismic rupture. The linear relation between<span>&nbsp;</span><i>u</i>(<i>t</i>) +<span>&nbsp;</span><i>u</i><sub>0</sub><span>&nbsp;</span>and<span>&nbsp;</span><i>N</i>(<i>t</i>) suggests that this afterslip also generates the aftershocks. The linear relation between<span>&nbsp;</span><i>u</i>(<i>t</i>) +<span>&nbsp;</span><i>u</i><sub>0</sub><span>&nbsp;</span>and Δ<i>N</i>(<i>t</i>) obtains after neither the 1999<span>&nbsp;</span><i>M</i><span>&nbsp;</span>7.1 Hector Mine (southern California) nor the 1999<span>&nbsp;</span><i>M</i><span>&nbsp;</span>7.6 Chi-Chi (central Taiwan) earthquakes, neither of which occurred on fault segments exhibiting fault creep.</p></div>","language":"English","publisher":"Seismological Society of America","doi":"10.1785/0120070069","issn":"00371106","usgsCitation":"Savage, J., and Yu, S., 2007, Postearthquake relaxation and aftershock accumulation linearly related after the 2003 M 6.5 Chengkung, Taiwan, and the 2004 M 6.0 Parkfield, California, earthquakes: Bulletin of the Seismological Society of America, v. 97, no. 5, p. 1632-1645, https://doi.org/10.1785/0120070069.","productDescription":"14 p.","startPage":"1632","endPage":"1645","numberOfPages":"14","costCenters":[],"links":[{"id":239921,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"97","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7e7be4b0c8380cd7a586","contributors":{"authors":[{"text":"Savage, J.C. 0000-0002-5114-7673","orcid":"https://orcid.org/0000-0002-5114-7673","contributorId":102876,"corporation":false,"usgs":true,"family":"Savage","given":"J.C.","affiliations":[],"preferred":false,"id":431263,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Yu, S.-B.","contributorId":101075,"corporation":false,"usgs":true,"family":"Yu","given":"S.-B.","email":"","affiliations":[],"preferred":false,"id":431262,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031389,"text":"70031389 - 2007 - Magnesium and calcium sulfate stabilities and the water budget of Mars","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70031389","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2317,"text":"Journal of Geophysical Research E: Planets","active":true,"publicationSubtype":{"id":10}},"title":"Magnesium and calcium sulfate stabilities and the water budget of Mars","docAbstract":"Magnesium sulfate probably plays a dominant role in the water cycle of Mars away from the polar ice caps through hydration and dehydration reactions. This prominence is due to its abundance, its occurrence in numerous hydration states, and its ability to hydrate and dehydrate rapidly. New experimental studies on the metastable reaction between hexahydrite (MgSO4??6H2O) and starkeyite (MgSO4-4H2O) as a function of temperature and relative humidity, supplemented by recent investigations of the stable reaction between epsomite (MgSO4??7H2O) and hexahydrite and by phase equilibrium calculations, suggest that the most important magnesium sulfate phases involved in the Martian water cycle are MgSO4??11 H2O, epsomite, starkeyite, and possibly kieserite (MgSO4??H2O). Hexahydrite is not predicted to be stable on the surface of Mars. During diurnal variations in temperature and relative humidity, 1 kg of MgSO4 can release or remove from the atmosphere 1.5 kg of H2O by cycling between kieserite and MgSO4??11 H2O. Despite subequal abundances of calcium sulfate, calcium sulfates are not likely to be important in the water cycle of the planet because of sluggish rates of hydration and dehydration and a more limited range of H2O concentrations per kilogram of CaSO4 (0.00 to 0.26 kg kg-1). Modern or recent erosion on Mars attributed to liquid water may be due to the dehydration Of MgSO4??11 H2O because of the inferred abundance and likelihood of occurrence of this phase and its limited stability relative to known variations in temperature and relative humidity.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research E: Planets","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2007JE002898","issn":"01480227","usgsCitation":"Chou, I., and Seal, R., 2007, Magnesium and calcium sulfate stabilities and the water budget of Mars: Journal of Geophysical Research E: Planets, v. 112, no. 11, https://doi.org/10.1029/2007JE002898.","costCenters":[],"links":[{"id":477118,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2007je002898","text":"Publisher Index Page"},{"id":212590,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2007JE002898"},{"id":240096,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"112","issue":"11","noUsgsAuthors":false,"publicationDate":"2007-11-08","publicationStatus":"PW","scienceBaseUri":"505a4b57e4b0c8380cd69489","contributors":{"authors":[{"text":"Chou, I.-M. 0000-0001-5233-6479","orcid":"https://orcid.org/0000-0001-5233-6479","contributorId":44283,"corporation":false,"usgs":true,"family":"Chou","given":"I.-M.","affiliations":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":431298,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Seal, R.R. II","contributorId":102097,"corporation":false,"usgs":true,"family":"Seal","given":"R.R.","suffix":"II","email":"","affiliations":[],"preferred":false,"id":431299,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":79979,"text":"pp1732D - 2007 - Estimating the amount of eroded section in a partially exhumed basin from geophysical well logs: An example from the North Slope","interactions":[{"subject":{"id":79979,"text":"pp1732D - 2007 - Estimating the amount of eroded section in a partially exhumed basin from geophysical well logs: An example from the North Slope","indexId":"pp1732D","publicationYear":"2007","noYear":false,"chapter":"D","title":"Estimating the amount of eroded section in a partially exhumed basin from geophysical well logs: An example from the North Slope"},"predicate":"IS_PART_OF","object":{"id":79483,"text":"pp1732 - 2006 - Studies by the U.S. Geological Survey in Alaska, 2005","indexId":"pp1732","publicationYear":"2006","noYear":false,"title":"Studies by the U.S. Geological Survey in Alaska, 2005"},"id":1}],"isPartOf":{"id":79483,"text":"pp1732 - 2006 - Studies by the U.S. Geological Survey in Alaska, 2005","indexId":"pp1732","publicationYear":"2006","noYear":false,"title":"Studies by the U.S. Geological Survey in Alaska, 2005"},"lastModifiedDate":"2023-11-09T15:20:59.351701","indexId":"pp1732D","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":331,"text":"Professional Paper","code":"PP","onlineIssn":"2330-7102","printIssn":"1044-9612","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"1732","chapter":"D","title":"Estimating the amount of eroded section in a partially exhumed basin from geophysical well logs: An example from the North Slope","docAbstract":"The reconstruction of burial and thermal histories of partially exhumed basins requires an estimation of the amount of erosion that has occurred since the time of maximum burial. We have developed a method for estimating eroded thickness by using porosity-depth trends derived from borehole sonic logs of wells in the Colville Basin of northern Alaska. Porosity-depth functions defined from sonic-porosity logs in wells drilled in minimally eroded parts of the basin provide a baseline for comparison with the porosity-depth trends observed in other wells across the basin. Calculated porosities, based on porosity-depth functions, were fitted to the observed data in each well by varying the amount of section assumed to have been eroded from the top of the sedimentary column. The result is an estimate of denudation at the wellsite since the time of maximum sediment accumulation. Alternative methods of estimating exhumation include fission-track analysis and projection of trendlines through vitrinite-reflectance profiles. In the Colville Basin, the methodology described here provides results generally similar to those from fission-track analysis and vitrinite-reflectance profiles, but with greatly improved spatial resolution relative to the published fission-track data and with improved reliability relative to the vitrinite-reflectance data. In addition, the exhumation estimates derived from sonic-porosity logs are independent of the thermal evolution of the basin, allowing these estimates to be used as independent variables in thermal-history modeling.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Studies by the U.S. Geological Survey in Alaska, 2005 (Professional Paper 1732)","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/pp1732D","usgsCitation":"Burns, W.M., Hayba, D.O., Rowan, E.L., and Houseknecht, D.W., 2007, Estimating the amount of eroded section in a partially exhumed basin from geophysical well logs: An example from the North Slope: U.S. Geological Survey Professional Paper 1732, 18 p., https://doi.org/10.3133/pp1732D.","productDescription":"18 p.","onlineOnly":"Y","temporalStart":"2005-01-01","temporalEnd":"2005-12-31","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":191970,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":415479,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_81295.htm","linkFileType":{"id":5,"text":"html"}},{"id":9706,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/pp/pp1732/pp1732d/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Alaska","otherGeospatial":"North Slope","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -166,\n              71.5\n            ],\n            [\n              -166,\n              68.5\n            ],\n            [\n              -145.5,\n              68.5\n            ],\n            [\n              -145.5,\n              71.5\n            ],\n            [\n              -166,\n              71.5\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae2e4b07f02db688bd0","contributors":{"authors":[{"text":"Burns, W. Matthew","contributorId":56742,"corporation":false,"usgs":true,"family":"Burns","given":"W.","email":"","middleInitial":"Matthew","affiliations":[],"preferred":false,"id":291360,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hayba, Daniel O. 0000-0003-4092-1894 dhayba@usgs.gov","orcid":"https://orcid.org/0000-0003-4092-1894","contributorId":396,"corporation":false,"usgs":true,"family":"Hayba","given":"Daniel","email":"dhayba@usgs.gov","middleInitial":"O.","affiliations":[],"preferred":true,"id":291357,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rowan, Elisabeth L. 0000-0001-5753-6189 erowan@usgs.gov","orcid":"https://orcid.org/0000-0001-5753-6189","contributorId":2075,"corporation":false,"usgs":true,"family":"Rowan","given":"Elisabeth","email":"erowan@usgs.gov","middleInitial":"L.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":291359,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Houseknecht, David W. 0000-0002-9633-6910 dhouse@usgs.gov","orcid":"https://orcid.org/0000-0002-9633-6910","contributorId":645,"corporation":false,"usgs":true,"family":"Houseknecht","given":"David","email":"dhouse@usgs.gov","middleInitial":"W.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":291358,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031777,"text":"70031777 - 2007 - Evasion of added isotopic mercury from a northern temperate lake","interactions":[],"lastModifiedDate":"2018-10-16T11:11:46","indexId":"70031777","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1571,"text":"Environmental Toxicology and Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Evasion of added isotopic mercury from a northern temperate lake","docAbstract":"<p>Isotopically enriched Hg (90% 202Hg) was added to a small lake in Ontario, Canada, at a rate equivalent to approximately threefold the annual direct atmospheric deposition rate that is typical of the northeastern United States. The Hg spike was thoroughly mixed into the epilimnion in nine separate events at two-week intervals throughout the summer growing season for three consecutive years. We measured concentrations of spike and ambient dissolved gaseous Hg (DGM) concentrations in surface water and the rate of volatilization of Hg from the lake on four separate, week-long sampling periods using floating dynamic flux chambers. The relationship between empirically measured rates of spike-Hg evasion were evaluated as functions of DGM concentration, wind velocity, and solar illumination. No individual environmental variable proved to be a strong predictor of the evasion flux. The DGM-normalized flux (expressed as the mass transfer coefficient, k) varied with wind velocity in a manner consistent with existing models of evasion of volatile solutes from natural waters but was higher than model estimates at low wind velocity. The empirical data were used to construct a description of evasion flux as a function of total dissolved Hg, wind, and solar illumination. That model was then applied to data for three summers for the experiment to generate estimates of Hg re-emission from the lake surface to the atmosphere. Based on ratios of spike Hg to ambient Hg in DGM and dissolved total Hg pools, ratios of DGM to total Hg in spike and ambient Hg pools, and flux estimates of spike and ambient Hg, we concluded that the added Hg spike was chemically indistinguishable from the ambient Hg in its behavior. Approximately 45% of Hg added to the lake over the summer was lost via volatilization.&nbsp;</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Toxicology and Chemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1897/06-148R.1","issn":"07307268","usgsCitation":"Southworth, G., Lindberg, S., Hintelmann, H., Amyot, M., Poulain, A., Bogle, M., Peterson, M., Rudd, J., Harris, R., Sandilands, K., Krabbenhoft, D., and Olsen, M.L., 2007, Evasion of added isotopic mercury from a northern temperate lake: Environmental Toxicology and Chemistry, v. 26, no. 1, p. 53-60, https://doi.org/10.1897/06-148R.1.","productDescription":"8 p.","startPage":"53","endPage":"60","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":212311,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1897/06-148R.1"},{"id":239777,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Canada","city":"Ontario","volume":"26","issue":"1","noUsgsAuthors":false,"publicationDate":"2007-01-01","publicationStatus":"PW","scienceBaseUri":"505a0d21e4b0c8380cd52e25","contributors":{"authors":[{"text":"Southworth, G.","contributorId":51095,"corporation":false,"usgs":true,"family":"Southworth","given":"G.","email":"","affiliations":[],"preferred":false,"id":433073,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lindberg, S.","contributorId":71341,"corporation":false,"usgs":true,"family":"Lindberg","given":"S.","email":"","affiliations":[],"preferred":false,"id":433076,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hintelmann, H.","contributorId":64423,"corporation":false,"usgs":true,"family":"Hintelmann","given":"H.","email":"","affiliations":[],"preferred":false,"id":433075,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Amyot, M.","contributorId":85404,"corporation":false,"usgs":true,"family":"Amyot","given":"M.","email":"","affiliations":[],"preferred":false,"id":433080,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Poulain, A.","contributorId":86171,"corporation":false,"usgs":true,"family":"Poulain","given":"A.","email":"","affiliations":[],"preferred":false,"id":433081,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Bogle, M.","contributorId":71384,"corporation":false,"usgs":true,"family":"Bogle","given":"M.","email":"","affiliations":[],"preferred":false,"id":433077,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Peterson, M.","contributorId":71514,"corporation":false,"usgs":true,"family":"Peterson","given":"M.","affiliations":[],"preferred":false,"id":433078,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Rudd, J.","contributorId":92054,"corporation":false,"usgs":true,"family":"Rudd","given":"J.","email":"","affiliations":[],"preferred":false,"id":433082,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Harris, R. 0000-0002-9247-0768","orcid":"https://orcid.org/0000-0002-9247-0768","contributorId":13382,"corporation":false,"usgs":true,"family":"Harris","given":"R.","affiliations":[],"preferred":false,"id":433072,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Sandilands, K.","contributorId":101456,"corporation":false,"usgs":true,"family":"Sandilands","given":"K.","affiliations":[],"preferred":false,"id":433083,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Krabbenhoft, David P. 0000-0003-1964-5020 dpkrabbe@usgs.gov","orcid":"https://orcid.org/0000-0003-1964-5020","contributorId":118001,"corporation":false,"usgs":true,"family":"Krabbenhoft","given":"David P.","email":"dpkrabbe@usgs.gov","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"preferred":false,"id":433079,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Olsen, Mark L.","contributorId":63852,"corporation":false,"usgs":true,"family":"Olsen","given":"Mark","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":433074,"contributorType":{"id":1,"text":"Authors"},"rank":12}]}}
,{"id":70031770,"text":"70031770 - 2007 - Two lithospheric profiles across southern California derived from gravity and seismic data","interactions":[],"lastModifiedDate":"2020-04-28T14:52:06.103758","indexId":"70031770","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2304,"text":"Journal of Geodynamics","active":true,"publicationSubtype":{"id":10}},"title":"Two lithospheric profiles across southern California derived from gravity and seismic data","docAbstract":"<div id=\"abstracts\" class=\"Abstracts u-font-serif\"><div id=\"aep-abstract-id27\" class=\"abstract author\"><div id=\"aep-abstract-sec-id28\"><p>We present two detailed 2-D density transects for the crust and uppermost mantle across southern California using a linear gravity inversion technique. This technique parameterizes the crust and upper mantle as a set of blocks that are based on published geologic and seismic models. Each block can have a range of densities that are constrained where possible by borehole measurements, seismic velocities, and petrologic data. To further constrain the models, it is assumed that the lithosphere is close to isostatic equilibrium at both ends of the profiles, in the deep ocean and east of the Mojave Desert. We calculate the lithostatic pressure variations field for the whole cross section to rule out the geophysically insignificant solutions. In the linear equation,<span>&nbsp;</span><i>ρ</i>&nbsp;=&nbsp;<i>a</i>&nbsp;+&nbsp;<i>bV</i><span>&nbsp;</span>(<i>V</i>, seismic P-wave velocity;<span>&nbsp;</span><i>ρ</i>, density), which approximates the mantle density–velocity (<i>ρ</i>–<i>V</i>) relationship, different coefficients for<span>&nbsp;</span><i>b</i><span>&nbsp;</span>were evaluated. Lower coefficients (<i>b</i>&nbsp;&lt;&nbsp;0.2) correspond to an almost purely thermally perturbed mantle, while higher coefficients (<i>b</i>&nbsp;&gt;&nbsp;0.3) imply that other effects, such as composition and/or metamorphic changes, play an important role in the mantle. Density models were constructed with the coefficient<span>&nbsp;</span><i>b</i><span>&nbsp;</span>ranging from 0 to 0.6. The results indicate that a high<span>&nbsp;</span><i>b</i><span>&nbsp;</span>value in the mantle<span>&nbsp;</span><i>ρ</i>–<i>V</i><span>&nbsp;</span>relationship is associated with less dense crust in the Mojave block and more dense crust in the Catalina schist block. In the less dense Mojave block, the average density of the whole crust is ∼2.75&nbsp;g/cm<sup>3</sup>, while that of the lower crust is ∼2.72&nbsp;g/cm<sup>3</sup>. These densities imply a high silica content in the crust, and a minor fraction of basic rock in the lower crust, or perhaps the absence of a basaltic layer altogether. By comparison, the average density of a typical continental stable platform is ∼2.85&nbsp;g/cm<sup>3</sup>. Models with higher<span>&nbsp;</span><i>b</i><span>&nbsp;</span>coefficients (0.5–0.6) are characterized by a large isostatic imbalance. On the other hand, lower<span>&nbsp;</span><i>b</i><span>&nbsp;</span>values (0–0.2) require a consolidated whole crust density in the Mojave Desert of ∼2.78&nbsp;g/cm<sup>3</sup>, and a lower crust density of ∼2.89&nbsp;g/cm<sup>3</sup><span>&nbsp;</span>with mostly basaltic composition. This contradicts the observed, lower<span>&nbsp;</span><i>V</i><sub>p</sub>/<i>V</i><sub>s</sub>-ratio in the Mojave Desert associated with mostly felsic and low-density crust. Models with lower<span>&nbsp;</span><i>b</i><span>&nbsp;</span>coefficients (0.1–0.2) are characterized by an absence of local Airy compensation beneath the San Gabriel Mountains at the LARSE-1 profile. These, and other non-gravity arguments, suggest optimal solutions to the mantle<span>&nbsp;</span><i>ρ</i>–<i>V</i><span>&nbsp;</span>relation of<span>&nbsp;</span><i>b</i>&nbsp;∼&nbsp;0.2–0.4. This, in turn, means that both thermal and petrological effects occur inside the downwelling of the uppermost mantle high velocity body located beneath the Transverse Ranges. During the development of this mantle downwelling, the basaltic layer of the Mojave block was likely eroded and pulled down into the high velocity body. Those basaltic fragments may have been transformed into eclogites, and this metamorphic change implies a higher<span>&nbsp;</span><i>b</i>-coefficient density–velocity relationship than would be expected for a purely thermal process.</p></div></div></div>","largerWorkTitle":"","language":"English","publisher":"Elsevier","doi":"10.1016/j.jog.2006.09.011","issn":"02643707","usgsCitation":"Romanyuk, T., Mooney, W.D., and Detweiler, S.T., 2007, Two lithospheric profiles across southern California derived from gravity and seismic data: Journal of Geodynamics, v. 43, no. 2, p. 274-307, https://doi.org/10.1016/j.jog.2006.09.011.","productDescription":"34 p.","startPage":"274","endPage":"307","numberOfPages":"34","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":239643,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United 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 \"}}]}","volume":"43","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb957e4b08c986b327bd3","contributors":{"authors":[{"text":"Romanyuk, T.","contributorId":107930,"corporation":false,"usgs":true,"family":"Romanyuk","given":"T.","affiliations":[],"preferred":false,"id":433044,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mooney, Walter D. 0000-0002-5310-3631 mooney@usgs.gov","orcid":"https://orcid.org/0000-0002-5310-3631","contributorId":3194,"corporation":false,"usgs":true,"family":"Mooney","given":"Walter","email":"mooney@usgs.gov","middleInitial":"D.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":433043,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Detweiler, Shane T. 0000-0001-5699-011X 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,{"id":70031687,"text":"70031687 - 2007 - Nutrient (N, P) loads and yields at multiple scales and subbasin types in the Yukon River basin, Alaska","interactions":[],"lastModifiedDate":"2018-01-30T19:37:24","indexId":"70031687","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2319,"text":"Journal of Geophysical Research G: Biogeosciences","active":true,"publicationSubtype":{"id":10}},"title":"Nutrient (N, P) loads and yields at multiple scales and subbasin types in the Yukon River basin, Alaska","docAbstract":"Loads and yields of dissolved and particulate nitrogen (N) and phosphorus (P) were measured and modeled at three locations on the Yukon River (YR) and on the Tanana and Porcupine Rivers in Alaska during 2001-2005. Total export of N and P upstream of Yukon Delta averaged 120 Gg N a-1 and 56 Gg P a-1, respectively, with 43.5% of total N (TN) as dissolved organic N, and 98% of total P (TP) as particulate phosphorus. Approximately half of the annual export of TN and TP occurred during spring. Hydrologic yields ofTN (5.6-13.3 mmol N m-2 a-1) and TP (0.8-9.0 mmol P m-2 a-1) were least in the Porcupine basin and greatest in the Tanana basin and were proportional to water yield. Comparison of current and historical dissolved organic matter (DOM) export from the basin indicates decreased DON export with respect to total water discharge during summer and autumn in recent decades. Any possible climate-related change in annual water discharge will result in proportional changes in N and P export.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research G: Biogeosciences","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2006JG000366","issn":"01480227","usgsCitation":"Dornblaser, M., and Striegl, R.G., 2007, Nutrient (N, P) loads and yields at multiple scales and subbasin types in the Yukon River basin, Alaska: Journal of Geophysical Research G: Biogeosciences, v. 112, no. 4, https://doi.org/10.1029/2006JG000366.","costCenters":[],"links":[{"id":477148,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2006jg000366","text":"Publisher Index Page"},{"id":239837,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212364,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2006JG000366"}],"volume":"112","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-11-03","publicationStatus":"PW","scienceBaseUri":"505a6937e4b0c8380cd73c09","contributors":{"authors":[{"text":"Dornblaser, M.M.","contributorId":38765,"corporation":false,"usgs":true,"family":"Dornblaser","given":"M.M.","email":"","affiliations":[],"preferred":false,"id":432695,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Striegl, Robert G. 0000-0002-8251-4659 rstriegl@usgs.gov","orcid":"https://orcid.org/0000-0002-8251-4659","contributorId":1630,"corporation":false,"usgs":true,"family":"Striegl","given":"Robert","email":"rstriegl@usgs.gov","middleInitial":"G.","affiliations":[{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true}],"preferred":false,"id":432696,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031683,"text":"70031683 - 2007 - Does amplitude scaling of ground motion records result in biased nonlinear structural drift responses?","interactions":[],"lastModifiedDate":"2012-03-12T17:21:12","indexId":"70031683","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1434,"text":"Earthquake Engineering and Structural Dynamics","active":true,"publicationSubtype":{"id":10}},"title":"Does amplitude scaling of ground motion records result in biased nonlinear structural drift responses?","docAbstract":"Limitations of the existing earthquake ground motion database lead to scaling of records to obtain seismograms consistent with a ground motion target for structural design and evaluation. In the engineering seismology community, acceptable limits for 'legitimate' scaling vary from one (no scaling allowed) to 10 or more. The concerns expressed by detractors of scaling are mostly based on the knowledge of, for example, differences in ground motion characteristics for different earthquake magnitude-distance (Mw-Rclose) scenarios, and much less on their effects on structures. At the other end of the spectrum, proponents have demonstrated that scaling is not only legitimate but also useful for assessing structural response statistics for Mw-Rclose scenarios. Their studies, however, have not investigated more recent purposes of scaling and have not always drawn conclusions for a wide spectrum of structural vibration periods and strengths. This article investigates whether scaling of records randomly selected from an Mw-Rclose bin (or range) to a target fundamental-mode spectral acceleration (Sa) level introduces bias in the expected nonlinear structural drift response of both single-degree-of-freedom oscillators and one multi-degree-of-freedom building. The bias is quantified relative to unscaled records from the target Mw-Rclose bin that are 'naturally' at the target Sa level. We consider scaling of records from the target Mw-Rclose bin and from other Mw-Rclose bins. The results demonstrate that scaling can indeed introduce a bias that, for the most part, ca be explained by differences between the elastic response spectra of the scaled versus unscaled records. Copyright ?? 2007 John Wiley & Sons, Ltd.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Earthquake Engineering and Structural Dynamics","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1002/eqe.695","issn":"00988847","usgsCitation":"Luco, N., and Bazzurro, P., 2007, Does amplitude scaling of ground motion records result in biased nonlinear structural drift responses?: Earthquake Engineering and Structural Dynamics, v. 36, no. 13, p. 1813-1835, https://doi.org/10.1002/eqe.695.","startPage":"1813","endPage":"1835","numberOfPages":"23","costCenters":[],"links":[{"id":212335,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/eqe.695"},{"id":239803,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"36","issue":"13","noUsgsAuthors":false,"publicationDate":"2007-06-22","publicationStatus":"PW","scienceBaseUri":"505a038ae4b0c8380cd50512","contributors":{"authors":[{"text":"Luco, N.","contributorId":34240,"corporation":false,"usgs":true,"family":"Luco","given":"N.","email":"","affiliations":[],"preferred":false,"id":432674,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bazzurro, P.","contributorId":90537,"corporation":false,"usgs":true,"family":"Bazzurro","given":"P.","email":"","affiliations":[],"preferred":false,"id":432675,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031390,"text":"70031390 - 2007 - Summer microhabitat use of fluvial bull trout in Eastern Oregon streams","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70031390","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2886,"text":"North American Journal of Fisheries Management","active":true,"publicationSubtype":{"id":10}},"title":"Summer microhabitat use of fluvial bull trout in Eastern Oregon streams","docAbstract":"The management and recovery of populations of bull trout Salvelinus confluentus requires a comprehensive understanding of habitat use across different systems, life stages, and life history forms. To address these needs, we collected microhabitat use and availability data in three fluvial populations of bull trout in eastern Oregon. We evaluated diel differences in microhabitat use, the consistency of microhabitat use across systems and size-classes based on preference, and our ability to predict bull trout microhabitat use. Diel comparisons suggested bull trout continue to use deeper microhabitats with cover but shift into significantly slower habitats during nighttime periods; however, we observed no discrete differences in substrate use patterns across diel periods. Across life stages, we found that both juvenile and adult bull trout used slow-velocity microhabitats with cover, but the use of specific types varied. Both logistic regression and habitat preference analyses suggested that adult bull trout used deeper habitats than juveniles. Habitat preference analyses suggested that bull trout habitat use was consistent across all three systems, as chi-square tests rejected the null hypotheses that microhabitats were used in proportion to those available (P < 0.0001). Validation analyses indicated that the logistic regression models (juvenile and adult) were effective at predicting bull trout absence across all tests (specificity values = 100%); however, our ability to accurately predict bull trout absence was limited (sensitivity values = 0% across all tests). Our results highlight the limitations of the models used to predict microhabitat use for fish species like bull trout, which occur at naturally low densities. However, our results also demonstrate that bull trout microhabitat use patterns are generally consistent across systems, a pattern that parallels observations at both similar and larger scales and across life history forms. Thus, our results, in combination with previous bull trout habitat studies, provide managers with benchmarks for restoration in highly degraded systems.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"North American Journal of Fisheries Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1577/M06-154.1","issn":"02755947","usgsCitation":"Al-Chokhachy, R., and Budy, P., 2007, Summer microhabitat use of fluvial bull trout in Eastern Oregon streams: North American Journal of Fisheries Management, v. 27, no. 4, p. 1068-1081, https://doi.org/10.1577/M06-154.1.","startPage":"1068","endPage":"1081","numberOfPages":"14","costCenters":[],"links":[{"id":212618,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1577/M06-154.1"},{"id":240132,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"27","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-11-01","publicationStatus":"PW","scienceBaseUri":"505b9f3ee4b08c986b31e430","contributors":{"authors":[{"text":"Al-Chokhachy, R.","contributorId":42431,"corporation":false,"usgs":true,"family":"Al-Chokhachy","given":"R.","affiliations":[],"preferred":false,"id":431300,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Budy, P.","contributorId":68091,"corporation":false,"usgs":true,"family":"Budy","given":"P.","affiliations":[],"preferred":false,"id":431301,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031402,"text":"70031402 - 2007 - Butterfly responses to prairie restoration through fire and grazing","interactions":[],"lastModifiedDate":"2012-03-12T17:21:15","indexId":"70031402","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1015,"text":"Biological Conservation","active":true,"publicationSubtype":{"id":10}},"title":"Butterfly responses to prairie restoration through fire and grazing","docAbstract":"The development of land for modern agriculture has resulted in losses of native prairie habitat. The small, isolated patches of prairie habitat that remain are threatened by fire suppression, overgrazing, and invasion by non-native species. We evaluated the effects of three restoration practices (grazing only, burning only, and burning and grazing) on the vegetation characteristics and butterfly communities of remnant prairies. Total butterfly abundance was highest on prairies that were managed with burning and grazing and lowest on those that were only burned. Butterfly species richness did not differ among any of the restoration practices. Butterfly species diversity was highest on sites that were only burned. Responses of individual butterfly species to restoration practices were highly variable. In the best predictive regression model, total butterfly abundance was negatively associated with the percent cover of bare ground and positively associated with the percent cover of forbs. Canonical correspondence analysis revealed that sites with burned only and grazed only practices could be separated based on their butterfly community composition. Butterfly communities in each of the three restoration practices are equally species rich but different practices yield compositionally different butterfly communities. Because of this variation in butterfly species responses to different restoration practices, there is no single practice that will benefit all species or even all species within habitat-specialist or habitat-generalist habitat guilds. ?? 2007 Elsevier Ltd. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Biological Conservation","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.biocon.2007.07.027","issn":"00063207","usgsCitation":"Vogel, J.A., Debinski, D.M., Koford, R.R., and Miller, J., 2007, Butterfly responses to prairie restoration through fire and grazing: Biological Conservation, v. 140, no. 1-2, p. 78-90, https://doi.org/10.1016/j.biocon.2007.07.027.","startPage":"78","endPage":"90","numberOfPages":"13","costCenters":[],"links":[{"id":477166,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://doi.org/10.1016/j.biocon.2007.07.027","text":"External Repository"},{"id":239754,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212290,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.biocon.2007.07.027"}],"volume":"140","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f2bde4b0c8380cd4b326","contributors":{"authors":[{"text":"Vogel, Jennifer A.","contributorId":9463,"corporation":false,"usgs":true,"family":"Vogel","given":"Jennifer","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":431349,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Debinski, Diane M.","contributorId":25361,"corporation":false,"usgs":true,"family":"Debinski","given":"Diane","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":431351,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Koford, Rolf R.","contributorId":16347,"corporation":false,"usgs":true,"family":"Koford","given":"Rolf","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":431350,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Miller, J.R.","contributorId":86555,"corporation":false,"usgs":true,"family":"Miller","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":431352,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031416,"text":"70031416 - 2007 - Influence of light and temperature on Prochlorococcus ecotype distributions in the Atlantic Ocean","interactions":[],"lastModifiedDate":"2012-03-12T17:21:13","indexId":"70031416","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2620,"text":"Limnology and Oceanography","active":true,"publicationSubtype":{"id":10}},"title":"Influence of light and temperature on Prochlorococcus ecotype distributions in the Atlantic Ocean","docAbstract":"In a focused analysis of Prochlorococcus population structure in the western North Atlantic, we found that the relative abundances of ecotypes varied significantly with depth and, at seasonally stratified locations, with degree of vertical mixing. More limited regional variation was observed (e.g., Sargasso Sea, Gulf Stream, continental slope, and equatorial current), and local patchiness was minimal. Modeling of a combined North and South Atlantic data set revealed significant, independent effects of light and temperature on ecotype abundances, suggesting that they are key ecological determinants that establish the different habitat ranges of the physiologically and genetically distinct ecotypes. This was in sharp contrast with the genus Synechococcus, whose total abundance was related to light but did not vary in a predictable way with temperature. Comparisons of field abundances with growth characteristics of cultured isolates of Prochlorococcus suggested the presence of ecotype-specific thermal and light adaptations that could be responsible for the distinct distribution patterns of the four dominant ecotypes. Significantly, we discovered that one \"low-light-adapted\" ecotype, eNATL2A, can thrive in deeply mixed surface layers, whereas another, eMIT9313, cannot, even though they have the same growth optimum for (low) light. ?? 2007, by the American Society of Limnology and Oceanography, Inc.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Limnology and Oceanography","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"00243590","usgsCitation":"Zinser, E., Johnson, Z., Coe, A., Karaca, E., Veneziano, D., and Chisholm, S., 2007, Influence of light and temperature on Prochlorococcus ecotype distributions in the Atlantic Ocean: Limnology and Oceanography, v. 52, no. 5, p. 2205-2220.","startPage":"2205","endPage":"2220","numberOfPages":"16","costCenters":[],"links":[{"id":239990,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"52","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3b4ee4b0c8380cd623ee","contributors":{"authors":[{"text":"Zinser, E.R.","contributorId":98946,"corporation":false,"usgs":true,"family":"Zinser","given":"E.R.","email":"","affiliations":[],"preferred":false,"id":431415,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Johnson, Z.I.","contributorId":12696,"corporation":false,"usgs":true,"family":"Johnson","given":"Z.I.","email":"","affiliations":[],"preferred":false,"id":431410,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Coe, A.","contributorId":79300,"corporation":false,"usgs":true,"family":"Coe","given":"A.","email":"","affiliations":[],"preferred":false,"id":431413,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Karaca, E.","contributorId":81696,"corporation":false,"usgs":true,"family":"Karaca","given":"E.","affiliations":[],"preferred":false,"id":431414,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Veneziano, D.","contributorId":55641,"corporation":false,"usgs":true,"family":"Veneziano","given":"D.","email":"","affiliations":[],"preferred":false,"id":431411,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Chisholm, S.W.","contributorId":70192,"corporation":false,"usgs":true,"family":"Chisholm","given":"S.W.","email":"","affiliations":[],"preferred":false,"id":431412,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70031666,"text":"70031666 - 2007 - Response of bird species densities to habitat structure and fire history along a Midwestern open-forest gradient","interactions":[],"lastModifiedDate":"2016-04-28T13:44:57","indexId":"70031666","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1318,"text":"Condor","active":true,"publicationSubtype":{"id":10}},"title":"Response of bird species densities to habitat structure and fire history along a Midwestern open-forest gradient","docAbstract":"<p>Oak savannas were historically common but are currently rare in the Midwestern United States. We assessed possible associations of bird species with savannas and other threatened habitats in the region by relating fire frequency and vegetation characteristics to seasonal densities of 72 bird species distributed across an open-forest gradient in northwestern Indiana. About one-third of the species did not exhibit statistically significant relationships with any combination of seven vegetation characteristics that included vegetation cover in five vertical strata, dead tree density, and tree height. For 40% of the remaining species, models best predicting species density incorporated tree density. Therefore, management based solely on manipulating tree density may not be an adequate strategy for managing bird populations along this open-forest gradient. Few species exhibited sharp peaks in predicted density under habitat conditions expected in restored savannas, suggesting that few savanna specialists occur among Midwestern bird species. When fire frequency, measured over fifteen years, was added to vegetation characteristics as a predictor of species density, it was incorporated into models for about one-quarter of species, suggesting that fire may modify habitat characteristics in ways that are important for birds but not captured by the structural habitat variables measured. Among those species, similar numbers had peaks in predicted density at low, intermediate, or high fire frequency. For species suggested by previous studies to have a preference for oak savannas along the open-forest gradient, estimated density was maximized at an average fire return interval of about one fire every three years. ?? The Cooper Ornithological Society 2007.</p>","language":"English","publisher":"Cooper Ornithological Society","doi":"10.1650/0010-5422(2007)109[734:ROBSDT]2.0.CO;2","issn":"00105422","usgsCitation":"Grundel, R., and Pavlovic, N., 2007, Response of bird species densities to habitat structure and fire history along a Midwestern open-forest gradient: Condor, v. 109, no. 4, p. 734-749, https://doi.org/10.1650/0010-5422(2007)109[734:ROBSDT]2.0.CO;2.","productDescription":"16 p.","startPage":"734","endPage":"749","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":476963,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://zenodo.org/record/1236383","text":"Publisher Index Page"},{"id":240079,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212576,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1650/0010-5422(2007)109[734:ROBSDT]2.0.CO;2"}],"volume":"109","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aaa37e4b0c8380cd861ed","contributors":{"authors":[{"text":"Grundel, R.","contributorId":37110,"corporation":false,"usgs":true,"family":"Grundel","given":"R.","affiliations":[],"preferred":false,"id":432582,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pavlovic, N.B.","contributorId":105076,"corporation":false,"usgs":true,"family":"Pavlovic","given":"N.B.","email":"","affiliations":[],"preferred":false,"id":432583,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031660,"text":"70031660 - 2007 - Seasonal variation in nutrient retention during inundation of a short-hydroperiod floodplain","interactions":[],"lastModifiedDate":"2012-03-12T17:21:11","indexId":"70031660","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3301,"text":"River Research and Applications","active":true,"publicationSubtype":{"id":10}},"title":"Seasonal variation in nutrient retention during inundation of a short-hydroperiod floodplain","docAbstract":"Floodplains are generally considered to be important locations for nutrient retention or inorganic-to-organic nutrient conversions in riverine ecosystems. However, little is known about nutrient processing in short-hydroperiod floodplains or seasonal variation in floodplain nutrient retention. Therefore, we quantified the net uptake, release or transformation of nitrogen (N), phosphorus (P) and suspended sediment species during brief periods (1-2 days) of overbank flooding through a 250-m floodplain flowpath on the fourth-order Mattawoman Creek, Maryland U.S.A. Sampling occurred during a winter, two spring and a summer flood in this largely forested watershed with low nutrient and sediment loading. Concentrations of NO3- increased significantly in surface water flowing over the floodplain in three of the four floods, suggesting the floodplain was a source of NO3-. The upper portion of the floodplain flowpath consistently exported NH4+, most likely due to the hyporheic: flushing of floodplain soil NH4+, which was then likely nitrified to NO3- in floodwaters. The floodplain was a sink for particulate organic P (POP) during two floods and particulate organic N and inorganic suspended sediment (ISS) during one flood. Large releases of all dissolved inorganic N and P species occurred following a snowmelt and subsequent cold winter flood. Although there was little consistency in most patterns of nutrient processing among the different floods, this floodplain, characterized by brief inundation, low residence time and low nutrient loading, behaved oppositely from the conceptual model for most floodplains in that it generally exported inorganic nutrients and imported organic nutrients.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"River Research and Applications","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1002/rra.1035","issn":"15351459","usgsCitation":"Noe, G., and Hupp, C., 2007, Seasonal variation in nutrient retention during inundation of a short-hydroperiod floodplain: River Research and Applications, v. 23, no. 10, p. 1088-1101, https://doi.org/10.1002/rra.1035.","startPage":"1088","endPage":"1101","numberOfPages":"14","costCenters":[],"links":[{"id":212483,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/rra.1035"},{"id":239974,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"23","issue":"10","noUsgsAuthors":false,"publicationDate":"2007-07-27","publicationStatus":"PW","scienceBaseUri":"505b88e9e4b08c986b316c27","contributors":{"authors":[{"text":"Noe, G.B.","contributorId":66464,"corporation":false,"usgs":true,"family":"Noe","given":"G.B.","email":"","affiliations":[],"preferred":false,"id":432563,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hupp, C.R. 0000-0003-1853-9197","orcid":"https://orcid.org/0000-0003-1853-9197","contributorId":78775,"corporation":false,"usgs":true,"family":"Hupp","given":"C.R.","affiliations":[],"preferred":false,"id":432564,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031658,"text":"70031658 - 2007 - Lack of association between ectoparasite intensities and rabies virus neutralizing antibody seroprevalence in wild big brown bats (Eptesicus fuscus), Fort Collins, Colorado","interactions":[],"lastModifiedDate":"2012-03-12T17:21:11","indexId":"70031658","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3675,"text":"Vector-Borne and Zoonotic Diseases","active":true,"publicationSubtype":{"id":10}},"title":"Lack of association between ectoparasite intensities and rabies virus neutralizing antibody seroprevalence in wild big brown bats (Eptesicus fuscus), Fort Collins, Colorado","docAbstract":"Recently, bat ectoparasites have been demonstrated to harbor pathogens of potential importance to humans. We evaluated antirabies antibody seroprevalence and the presence of ectoparasites in big brown bats (Eptesicus fuscus) sampled in 2002 and 2003 in Colorado to investigate if an association existed between ectoparasite intensity and exposure to rabies virus (RV). We used logistic regression and Akaike's Information Criteria adjusted for sample size (AICc) in a post-hoc analysis to investigate the relative importance of three ectoparasite species, as well as bat colony size, year sampled, age class, colony size, and year interaction on the presence of rabies virus neutralizing antibodies (VNA) in serum of wild E. fuscus. We obtained serum samples and ectoparasite counts from big brown bats simultaneously in 2002 and 2003. Although the presence of ectoparasites (Steatonyssus occidentalis and Spinturnix bakeri) were important in elucidating VNA seroprevalence, their intensities were higher in seronegative bats than in seropositive bats, and the presence of a third ectoparasite (Cimex pilosellus) was inconsequential. Colony size and year sampled were the most important variables in these AICc models. These findings suggest that these ectoparasites do not enhance exposure of big brown bats to RV. ?? 2007 Mary Ann Liebert, Inc.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Vector-Borne and Zoonotic Diseases","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1089/vbz.2007.0572","issn":"15303667","usgsCitation":"Pearce, R., O'Shea, T., Shankar, V., and Rupprecht, C.E., 2007, Lack of association between ectoparasite intensities and rabies virus neutralizing antibody seroprevalence in wild big brown bats (Eptesicus fuscus), Fort Collins, Colorado: Vector-Borne and Zoonotic Diseases, v. 7, no. 4, p. 489-495, https://doi.org/10.1089/vbz.2007.0572.","startPage":"489","endPage":"495","numberOfPages":"7","costCenters":[],"links":[{"id":239940,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212450,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1089/vbz.2007.0572"}],"volume":"7","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4126e4b0c8380cd6532e","contributors":{"authors":[{"text":"Pearce, R.D.","contributorId":45439,"corporation":false,"usgs":true,"family":"Pearce","given":"R.D.","email":"","affiliations":[],"preferred":false,"id":432554,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"O'Shea, T. J. 0000-0002-0758-9730","orcid":"https://orcid.org/0000-0002-0758-9730","contributorId":50100,"corporation":false,"usgs":true,"family":"O'Shea","given":"T. J.","affiliations":[],"preferred":false,"id":432555,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Shankar, V.","contributorId":52126,"corporation":false,"usgs":true,"family":"Shankar","given":"V.","email":"","affiliations":[],"preferred":false,"id":432556,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Rupprecht, C. E.","contributorId":101602,"corporation":false,"usgs":false,"family":"Rupprecht","given":"C.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":432557,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031657,"text":"70031657 - 2007 - Research needs for finely resolved fossil carbon emissions","interactions":[],"lastModifiedDate":"2018-01-23T11:17:18","indexId":"70031657","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Research needs for finely resolved fossil carbon emissions","docAbstract":"<p>Scientific research on the global carbon cycle has emerged as a high priority in biogeochemistry, climate studies, and global change policy. The emission of carbon dioxide (CO<sub>2</sub>) from fossil fuel combustion is a dominant driver of the current net carbon fluxes between the land, the oceans, and the atmosphere, and it is a key contributor to the rise in modern radiative forcing. Contrary to a commonly held perception, our quantitative knowledge about these emissions is insufficient to satisfy current scientific and policy needs. A more highly spatially and temporally resolved quantification of the social and economic drivers of fossil fuel combustion, and the resulting CO<sub>2</sub> emissions, is essential to supporting scientific and policy progress. In this article, a new community of emissions researchers called the CO<sub>2</sub> Fossil Fuel Emission Effort (CO<sub>2</sub>FFEE) outlines a research agenda to meet the need for improved fossil fuel CO<sub>2</sub> emissions information and solicits comment from the scientific community and research agencies.</p>","language":"English","publisher":"American Geohpysical Union","doi":"10.1029/2007EO490008","usgsCitation":"Gurney, K., Ansley, W., Mendoza, D., Petron, G., Frost, G., Gregg, J., Fischer, M., Pataki, D.E., Ackerman, K., Houweling, S., Corbin, K., Andres, R., and Blasing, T., 2007, Research needs for finely resolved fossil carbon emissions: Eos, Transactions, American Geophysical Union, v. 88, no. 49, p. 542-543, https://doi.org/10.1029/2007EO490008.","productDescription":"2 p.","startPage":"542","endPage":"543","costCenters":[],"links":[{"id":477047,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2007eo490008","text":"Publisher Index Page"},{"id":239939,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"88","issue":"49","noUsgsAuthors":false,"publicationDate":"2008-01-04","publicationStatus":"PW","scienceBaseUri":"505aa927e4b0c8380cd85c51","contributors":{"authors":[{"text":"Gurney, K.","contributorId":24174,"corporation":false,"usgs":true,"family":"Gurney","given":"K.","affiliations":[],"preferred":false,"id":432545,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ansley, W.","contributorId":60439,"corporation":false,"usgs":true,"family":"Ansley","given":"W.","email":"","affiliations":[],"preferred":false,"id":432550,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mendoza, D.","contributorId":69365,"corporation":false,"usgs":true,"family":"Mendoza","given":"D.","email":"","affiliations":[],"preferred":false,"id":432551,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Petron, G.","contributorId":29215,"corporation":false,"usgs":true,"family":"Petron","given":"G.","email":"","affiliations":[],"preferred":false,"id":432547,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Frost, G.","contributorId":20158,"corporation":false,"usgs":true,"family":"Frost","given":"G.","affiliations":[],"preferred":false,"id":432541,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Gregg, J.","contributorId":27662,"corporation":false,"usgs":true,"family":"Gregg","given":"J.","email":"","affiliations":[],"preferred":false,"id":432546,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Fischer, M.","contributorId":23762,"corporation":false,"usgs":true,"family":"Fischer","given":"M.","email":"","affiliations":[],"preferred":false,"id":432543,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Pataki, Diane E.","contributorId":90538,"corporation":false,"usgs":false,"family":"Pataki","given":"Diane","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":432552,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Ackerman, K.","contributorId":40425,"corporation":false,"usgs":true,"family":"Ackerman","given":"K.","email":"","affiliations":[],"preferred":false,"id":432549,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Houweling, S.","contributorId":106316,"corporation":false,"usgs":true,"family":"Houweling","given":"S.","email":"","affiliations":[],"preferred":false,"id":432553,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Corbin, K.","contributorId":37536,"corporation":false,"usgs":true,"family":"Corbin","given":"K.","email":"","affiliations":[],"preferred":false,"id":432548,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Andres, R.","contributorId":21764,"corporation":false,"usgs":true,"family":"Andres","given":"R.","email":"","affiliations":[],"preferred":false,"id":432542,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Blasing, T.J.","contributorId":23763,"corporation":false,"usgs":true,"family":"Blasing","given":"T.J.","email":"","affiliations":[],"preferred":false,"id":432544,"contributorType":{"id":1,"text":"Authors"},"rank":13}]}}
,{"id":70031652,"text":"70031652 - 2007 - Geologic characterization of shelf areas using usSEABED for GIS mapping, modeling processes and assessing marine sand and gravel resources","interactions":[],"lastModifiedDate":"2017-09-20T15:48:21","indexId":"70031652","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Geologic characterization of shelf areas using usSEABED for GIS mapping, modeling processes and assessing marine sand and gravel resources","docAbstract":"Geologic maps depicting offshore sedimentary features serve many scientific and applied purposes. Such maps have been lacking, but recent computer technology and software offer promise in the capture and display of diverse marine data. Continental margins contain landforms which provide a variety of important functions and contain important sedimentary records. Some shelf areas also contain deposits regarded as potential aggregate resources. Because proper management of coastal and offshore areas is increasingly important, knowledge of the framework geology and marine processes is critical. Especially valuable are comprehensive and integrated digital databases based on high-quality information from original sources. Products of interest are GIS maps containing thematic information, such as sediment character and texture. These products are useful to scientists modeling nearshore and shelf processes as well as planners and managers. The U.S. Geological Survey is leading a national program to gather a variety of extant marine geologic data into the usSEABED database system. This provides centralized, integrated marine geologic data collected over the past 50 years. To date, over 340,000 sediment data points from the U.S. reside in usSEABED, which combines an array of physical data and analytical and descriptive information about the sea floor and are available to the marine community through three USGS data reports for the Atlantic, Gulf of Mexico, and Pacific published in 2006, and the project web sites: (http://woodshole.er.usg s.gov/project-pages/aggregates/ and http://walrus.wr.usgs.gov/usseabed/)","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes","conferenceDate":"May 13-17, 2007","conferenceLocation":"New Orleans, LA","language":"English","publisher":"American Society of Civil Engineers","doi":"10.1061/40926(239)194","isbn":"0784409269; 9780784409268","usgsCitation":"Williams, S., Bliss, J.D., Arsenault, M., Jenkins, C., and Goff, J., 2007, Geologic characterization of shelf areas using usSEABED for GIS mapping, modeling processes and assessing marine sand and gravel resources, <i>in</i> Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes, New Orleans, LA, May 13-17, 2007, p. 2473-2486, https://doi.org/10.1061/40926(239)194.","productDescription":"14 p.","startPage":"2473","endPage":"2486","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":239870,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","noUsgsAuthors":false,"publicationDate":"2012-04-26","publicationStatus":"PW","scienceBaseUri":"505a1937e4b0c8380cd558f0","contributors":{"authors":[{"text":"Williams, S.J.","contributorId":85203,"corporation":false,"usgs":true,"family":"Williams","given":"S.J.","email":"","affiliations":[],"preferred":false,"id":432521,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bliss, J. D.","contributorId":25564,"corporation":false,"usgs":true,"family":"Bliss","given":"J.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":432518,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Arsenault, M.A.","contributorId":32353,"corporation":false,"usgs":true,"family":"Arsenault","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":432519,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jenkins, C.J.","contributorId":61244,"corporation":false,"usgs":true,"family":"Jenkins","given":"C.J.","email":"","affiliations":[],"preferred":false,"id":432520,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Goff, J.A.","contributorId":17004,"corporation":false,"usgs":true,"family":"Goff","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":432517,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70031649,"text":"70031649 - 2007 - Subtidal sea level variability in a shallow Mississippi River deltaic estuary, Louisiana","interactions":[],"lastModifiedDate":"2021-05-27T16:48:45.218264","indexId":"70031649","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Subtidal sea level variability in a shallow Mississippi River deltaic estuary, Louisiana","docAbstract":"<p>The relative roles of river, atmospheric, and tidal forcings on estuarine sea level variability are examined in Breton Sound, a shallow (0.7 m) deltaic estuary situated in an interdistributary basin on the Mississippi River deltaic plain. The deltaic landscape contains vegetated marshes, tidal flats, circuitous channels, and other features that frictionally dissipate waves propagating through the system. Direct forcing by local wind stress over the surface of the estuary is minimal, owing to the lack of significant fetch due to landscape features of the estuary. Atmospheric forcing occurs almost entirely through remote forcing, where alongshore winds facilitate estuary-shelf exchange through coastal Ekman convergence. The highly frictional nature of the deltaic landscape causes the estuary to act as a low-pass filter to remote atmospheric forcing, where high-frequency, coastally-induced fluctuations are significantly damped, and the damping increases with distance from the estuary mouth. During spring, when substantial quantities of controlled Mississippi River inputs (q¯ = 62 m3 s¯ 1) are discharged into the estuary, upper estuary subtidal sea levels are forced by a combination of river and remote atmospheric forcings, while river effects are less clear downestuary. During autumn (q¯ = 7 m3 s-1) sea level variability throughout the estuary is governed entirely by coastal variations at the marine boundary. A frequency-dependent analytical model, previously used to describe sea level dynamics forced by local wind stress and coastal forcing in deeper, less frictional systems, is applied in the shallow Breton Sound estuary. In contrast to deeper systems where coastally-induced fluctuations exhibit little or no frictional attenuation inside the estuary, these fluctuations in the shallow Breton Sound estuary show strong frequency-dependent amplitude reductions that extend well into the subtidal frequency spectrum.&nbsp;</p>","language":"English","publisher":"SpringerLink","doi":"10.1007/BF02841335","usgsCitation":"Snedden, G., Cable, J., and Wiseman, W., 2007, Subtidal sea level variability in a shallow Mississippi River deltaic estuary, Louisiana: Estuaries and Coasts, v. 30, no. 5, p. 802-812, https://doi.org/10.1007/BF02841335.","productDescription":"11 p.","startPage":"802","endPage":"812","costCenters":[{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true}],"links":[{"id":239834,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Louisiana","otherGeospatial":"Breton Sound","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -90.1318359375,\n              30.012030680358613\n            ],\n            [\n              -89.593505859375,\n              29.90732937685153\n            ],\n            [\n              -89.36279296875,\n              30.021543509740027\n            ],\n            [\n              -89.2529296875,\n              30.164126343161097\n            ],\n            [\n              -90.032958984375,\n              30.230594564932193\n            ],\n            [\n              -90.1318359375,\n              30.012030680358613\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"30","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9d9be4b08c986b31d947","contributors":{"authors":[{"text":"Snedden, G.A. 0000-0001-7821-3709","orcid":"https://orcid.org/0000-0001-7821-3709","contributorId":37535,"corporation":false,"usgs":true,"family":"Snedden","given":"G.A.","affiliations":[],"preferred":false,"id":432503,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cable, J.E.","contributorId":25963,"corporation":false,"usgs":true,"family":"Cable","given":"J.E.","email":"","affiliations":[],"preferred":false,"id":432502,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wiseman, W.J. Jr.","contributorId":53973,"corporation":false,"usgs":true,"family":"Wiseman","given":"W.J.","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":432504,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031647,"text":"70031647 - 2007 - Bridging the energy gap: Anadromous blueback herring feeding in the Hudson and Mohawk rivers, New York","interactions":[],"lastModifiedDate":"2012-03-12T17:21:12","indexId":"70031647","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3624,"text":"Transactions of the American Fisheries Society","active":true,"publicationSubtype":{"id":10}},"title":"Bridging the energy gap: Anadromous blueback herring feeding in the Hudson and Mohawk rivers, New York","docAbstract":"Adult blueback herring Alosa aestivalis (N = 116) were collected during the 1999, 2000, and 2002-2004 spawning runs from sites on the Hudson and Mohawk rivers, and gut contents were analyzed. Thirty-four fish (33% of those examined) were found to contain food material. Food items were present in 41% of Mohawk River samples and 11% of Hudson River samples; all Hudson River fish containing food were captured in small tributaries above the head of tide. Hudson River fish predominantly consumed zooplankton, while Mohawk River fish consumed benthic aquatic insects in large quantities, including Baetidae, Ephemeridae, and Chironomidae. Using stable isotope analysis and a mixing model, we found that fish collected later in the season had significantly decreased marine-derived C. Condition indices of later-season fish were equal to or greater than those of fish collected earlier in the season. Blueback herring in this system may face increased energy requirements as they migrate farther upstream during spawning runs, and feeding may provide energy subsidies needed to maintain fitness over their expanded migratory range. ?? Copyright by the American Fisheries Society 2007.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Transactions of the American Fisheries Society","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1577/T06-161.1","issn":"00028487","usgsCitation":"Simonin, P., Limburg, K., and Machut, L., 2007, Bridging the energy gap: Anadromous blueback herring feeding in the Hudson and Mohawk rivers, New York: Transactions of the American Fisheries Society, v. 136, no. 6, p. 1614-1621, https://doi.org/10.1577/T06-161.1.","startPage":"1614","endPage":"1621","numberOfPages":"8","costCenters":[],"links":[{"id":212334,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1577/T06-161.1"},{"id":239802,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"136","issue":"6","noUsgsAuthors":false,"publicationDate":"2011-01-09","publicationStatus":"PW","scienceBaseUri":"5059f27ce4b0c8380cd4b1d7","contributors":{"authors":[{"text":"Simonin, P.W.","contributorId":74202,"corporation":false,"usgs":true,"family":"Simonin","given":"P.W.","email":"","affiliations":[],"preferred":false,"id":432496,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Limburg, K.E.","contributorId":103219,"corporation":false,"usgs":true,"family":"Limburg","given":"K.E.","email":"","affiliations":[],"preferred":false,"id":432497,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Machut, L.S.","contributorId":50355,"corporation":false,"usgs":true,"family":"Machut","given":"L.S.","email":"","affiliations":[],"preferred":false,"id":432495,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031418,"text":"70031418 - 2007 - Study of a prehistoric landslide using seismic reflection methods integrated with geological data in the Wasatch Mountains, Utah, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:13","indexId":"70031418","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1517,"text":"Engineering Geology","active":true,"publicationSubtype":{"id":10}},"title":"Study of a prehistoric landslide using seismic reflection methods integrated with geological data in the Wasatch Mountains, Utah, USA","docAbstract":"An integration of geological and geophysical techniques characterizes the internal and basal structure of a landslide along the western margin of the Wasatch Mountains in northern Utah, USA. The study area is within a region of planned and continuing residential development. The Little Valley Landslide is a prehistoric landslide as old as 13??ka B.P. Drilling and trenching at the site indicate that the landslide consists of chaotic and disturbed weathered volcanic material derived from Tertiary age volcanic rocks that comprise a great portion of the Wasatch Range. Five short high-resolution common mid-point seismic reflection profiles over selected portions of the site examine the feasibility of using seismic reflection to study prehistoric landslides in the Wasatch Mountain region. Due to the expected complexity of the near-surface geology, we have pursued an experimental approach in the data processing, examining the effects of muting first arrivals, frequency filtering, model-based static corrections, and seismic migration. The results provide a framework for understanding the overall configuration of the landslide, its basal (failure) surface, and the structure immediately underlying this surface. A glide surface or de??collement is interpreted to underlie the landslide suggesting a large mass movement. The interpretation of a glide surface is based on the onset of coherent reflectivity, calibrated by information from a borehole located along one of the seismic profiles. The glide surface is deepest in the center portion of the landslide and shallows up slope, suggesting a trough-like feature. This study shows that seismic reflection techniques can be successfully used in complex alpine landslide regions to (1) provide a framework in which to link geological data and (2) reduce the need for an extensive trenching and drilling program. ?? 2007 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Engineering Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.enggeo.2007.08.006","issn":"00137952","usgsCitation":"Tingey, B., McBride, J., Thompson, T., Stephenson, W.J., South, J., and Bushman, M., 2007, Study of a prehistoric landslide using seismic reflection methods integrated with geological data in the Wasatch Mountains, Utah, USA: Engineering Geology, v. 95, no. 1-2, p. 1-29, https://doi.org/10.1016/j.enggeo.2007.08.006.","startPage":"1","endPage":"29","numberOfPages":"29","costCenters":[],"links":[{"id":212529,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.enggeo.2007.08.006"},{"id":240026,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"95","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9cd1e4b08c986b31d4d1","contributors":{"authors":[{"text":"Tingey, B.E.","contributorId":73397,"corporation":false,"usgs":true,"family":"Tingey","given":"B.E.","email":"","affiliations":[],"preferred":false,"id":431423,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McBride, J.H.","contributorId":99712,"corporation":false,"usgs":true,"family":"McBride","given":"J.H.","email":"","affiliations":[],"preferred":false,"id":431427,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Thompson, T.J.","contributorId":86969,"corporation":false,"usgs":true,"family":"Thompson","given":"T.J.","email":"","affiliations":[],"preferred":false,"id":431425,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Stephenson, W. J.","contributorId":87982,"corporation":false,"usgs":true,"family":"Stephenson","given":"W.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":431426,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"South, J.V.","contributorId":72188,"corporation":false,"usgs":true,"family":"South","given":"J.V.","email":"","affiliations":[],"preferred":false,"id":431422,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Bushman, M.","contributorId":75335,"corporation":false,"usgs":true,"family":"Bushman","given":"M.","email":"","affiliations":[],"preferred":false,"id":431424,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70031641,"text":"70031641 - 2007 - Behavior of tunnel form buildings under quasi-static cyclic lateral loading","interactions":[],"lastModifiedDate":"2021-06-11T17:25:58.336508","indexId":"70031641","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3485,"text":"Structural Engineering and Mechanics","active":true,"publicationSubtype":{"id":10}},"title":"Behavior of tunnel form buildings under quasi-static cyclic lateral loading","docAbstract":"In this paper, experimental investigations on the inelastic seismic behavior of tunnel form buildings (i.e., box-type or panel systems) are presented. Two four-story scaled building specimens were tested under quasi-static cyclic lateral loading in longitudinal and transverse directions. The experimental results and supplemental finite element simulations collectively indicate that lightly reinforced structural walls of tunnel form buildings may exhibit brittle flexural failure under seismic action. The global tension/compression couple triggers this failure mechanism by creating pure axial tension in outermost shear-walls. This type of failure takes place due to rupturing of longitudinal reinforcement without crushing of concrete, therefore is of particular interest in emphasizing the mode of failure that is not routinely considered during seismic design of shear-wall dominant structural systems.","language":"English","publisher":"KoreaScience","doi":"10.12989/sem.2007.27.1.099","usgsCitation":"Yuksel, S., and Kalkan, E., 2007, Behavior of tunnel form buildings under quasi-static cyclic lateral loading: Structural Engineering and Mechanics, v. 27, no. 1, p. 99-115, https://doi.org/10.12989/sem.2007.27.1.099.","productDescription":"17 p.","startPage":"99","endPage":"115","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":239705,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"27","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f0a2e4b0c8380cd4a811","contributors":{"authors":[{"text":"Yuksel, S.B.","contributorId":67202,"corporation":false,"usgs":true,"family":"Yuksel","given":"S.B.","email":"","affiliations":[],"preferred":false,"id":432473,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kalkan, E. 0000-0002-9138-9407","orcid":"https://orcid.org/0000-0002-9138-9407","contributorId":8212,"corporation":false,"usgs":true,"family":"Kalkan","given":"E.","affiliations":[],"preferred":false,"id":432472,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031631,"text":"70031631 - 2007 - A crustal seismic velocity model for the UK, Ireland and surrounding seas","interactions":[],"lastModifiedDate":"2023-07-06T12:30:27.908537","indexId":"70031631","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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 crustal seismic velocity model for the UK, Ireland and surrounding seas","docAbstract":"<p class=\"chapter-para\">A regional model of the 3-D variation in seismic<span>&nbsp;</span><i>P</i>-wave velocity structure in the crust of NW Europe has been compiled from wide-angle reflection/refraction profiles. Along each 2-D profile a velocity–depth function has been digitised at 5 km intervals. These 1-D velocity functions were mapped into three dimensions using ordinary kriging with weights determined to minimise the difference between digitised and interpolated values. An analysis of variograms of the digitised data suggested a radial isotropic weighting scheme was most appropriate. Horizontal dimensions of the model cells are optimised at 40 × 40 km and the vertical dimension at 1 km. The resulting model provides a higher resolution image of the 3-D variation in seismic velocity structure of the UK, Ireland and surrounding areas than existing models. The construction of the model through kriging allows the uncertainty in the velocity structure to be assessed. This uncertainty indicates the high density of data required to confidently interpolate the crustal velocity structure, and shows that for this region the velocity is poorly constrained for large areas away from the input data.</p>","language":"English","publisher":"Oxford Academic","doi":"10.1111/j.1365-246X.2007.03569.x","issn":"0956540X","usgsCitation":"Kelly, A., England, R., and Maguire, P.K., 2007, A crustal seismic velocity model for the UK, Ireland and surrounding seas: Geophysical Journal International, v. 171, no. 3, p. 1172-1184, https://doi.org/10.1111/j.1365-246X.2007.03569.x.","productDescription":"13 p.","startPage":"1172","endPage":"1184","numberOfPages":"13","costCenters":[],"links":[{"id":477058,"rank":2,"type":{"id":41,"text":"Open Access External Repository Page"},"text":"External Repository"},{"id":240077,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United Kingdom, Ireland","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -13.140348177630926,\n              59.38308254359461\n            ],\n            [\n              -13.140348177630926,\n              49.365106758849805\n            ],\n            [\n              2.6731794840919463,\n              49.365106758849805\n            ],\n            [\n              2.6731794840919463,\n              59.38308254359461\n            ],\n            [\n              -13.140348177630926,\n              59.38308254359461\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"171","issue":"3","noUsgsAuthors":false,"publicationDate":"2007-09-27","publicationStatus":"PW","scienceBaseUri":"5059e3a2e4b0c8380cd4614c","contributors":{"authors":[{"text":"Kelly, A.","contributorId":86975,"corporation":false,"usgs":true,"family":"Kelly","given":"A.","email":"","affiliations":[],"preferred":false,"id":432428,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"England, R.W.","contributorId":106663,"corporation":false,"usgs":true,"family":"England","given":"R.W.","email":"","affiliations":[],"preferred":false,"id":432429,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Maguire, Peter K.H.","contributorId":15766,"corporation":false,"usgs":true,"family":"Maguire","given":"Peter","email":"","middleInitial":"K.H.","affiliations":[],"preferred":false,"id":432427,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
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