{"pageNumber":"2369","pageRowStart":"59200","pageSize":"25","recordCount":184617,"records":[{"id":70031279,"text":"70031279 - 2007 - Reconstructing late Cenozoic stream gradients from high-level chert gravels in central Eastern Kansas","interactions":[],"lastModifiedDate":"2012-03-12T17:21:12","indexId":"70031279","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1358,"text":"Current Research in Earth Sciences","active":true,"publicationSubtype":{"id":10}},"title":"Reconstructing late Cenozoic stream gradients from high-level chert gravels in central Eastern Kansas","docAbstract":"Interpreting the evolution of Kansas' landscape east of the Flint Hills provides major challenges. In the Neogene (late Tertiary) and perhaps part of the Pleistocene, streams transported a variety of sedimentary materials, including chert gravels derived from the Flint Hills. Gentle intermittent uplift stimulated the system system to cut down, locally removing and reworking the gravels to create stream-terrace deposits that consist mostly of chert pebbles, which now lie well above the floodplains of modern streams. By correlating the elevations of these gravels, the gradients of the trunk streams that deposited them can be reconstructed. Interestingly, these ancient streams flowed southeast at a little more than a foot per mile (0.2 m/km), roughly the same as the gradient of the trunk streams in the region today. The evolving landscape in eastern Kansas also has been strongly influenced by an extensive network of fractures that is widespread in the midcontinent region and may be worldwide in extent. In northeastern Kansas, glaciation during the Pleistocene disrupted the southeasterly drainage and established the present location of the Kansas River. South of the Kansas River and its immediate tributaries, however, the general southeasterly drainage has been preserved. We have made use of the wealth of topographic-elevation data now available in digital form known as DEMs or digital elevation models. Coupled with GIS procedures, the DEMs helped link the mapped distribution of chert gravels with hypothetical fitted surfaces that represent ancient stream gradients. Furthermore, DEM data placed in shaded-relief map form emphasize the influence of fractures in evolution of the drainage system.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Current Research in Earth Sciences","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","usgsCitation":"Harbaugh, J., Merriam, D.F., and Howard, H., 2007, Reconstructing late Cenozoic stream gradients from high-level chert gravels in central Eastern Kansas: Current Research in Earth Sciences, v. 253, no. 2.","costCenters":[],"links":[{"id":240018,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"253","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"50e4a24fe4b0e8fec6cdb56b","contributors":{"authors":[{"text":"Harbaugh, J.W.","contributorId":43912,"corporation":false,"usgs":true,"family":"Harbaugh","given":"J.W.","email":"","affiliations":[],"preferred":false,"id":430870,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Merriam, D. F.","contributorId":63175,"corporation":false,"usgs":true,"family":"Merriam","given":"D.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":430871,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Howard, H.H.","contributorId":74256,"corporation":false,"usgs":true,"family":"Howard","given":"H.H.","email":"","affiliations":[],"preferred":false,"id":430872,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031278,"text":"70031278 - 2007 - Forest legacies, climate change, altered disturbance regimes, invasive species and water","interactions":[],"lastModifiedDate":"2016-08-25T10:39:28","indexId":"70031278","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3666,"text":"Unasylva","printIssn":"0041-6436","active":true,"publicationSubtype":{"id":10}},"title":"Forest legacies, climate change, altered disturbance regimes, invasive species and water","docAbstract":"<p>The factors that must be considered in seeking to predict changes in water availability has been examined. These factors are the following: forest legacies including logging, mining, agriculture, grazing, elimination of large carnivores, human-caused wildfire, and pollution; climate change and stream flow; altered disturbances such as frequency intensity and pattern of wildfires and insect outbreaks as well as flood control; lastly, invasive species like forest pests and pathogens. An integrated approach quantifying the current and past condition trends can be combined with spatial and temporal modeling to develop future change in forest structures and water supply. The key is a combination of geographic information system technologies with climate and land use scenarios, while preventing and minimizing the effects of harmful invasive species.</p>","language":"English","issn":"00416436","usgsCitation":"Stohlgren, T., Jarnevich, C., and Kumar, S., 2007, Forest legacies, climate change, altered disturbance regimes, invasive species and water: Unasylva, v. 58, no. 229, p. 44-49.","productDescription":"6 p.","startPage":"44","endPage":"49","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":240017,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"58","issue":"229","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a1334e4b0c8380cd5456b","contributors":{"authors":[{"text":"Stohlgren, T.","contributorId":40766,"corporation":false,"usgs":true,"family":"Stohlgren","given":"T.","affiliations":[],"preferred":false,"id":430867,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jarnevich, C.","contributorId":68099,"corporation":false,"usgs":true,"family":"Jarnevich","given":"C.","affiliations":[],"preferred":false,"id":430868,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kumar, S.","contributorId":89843,"corporation":false,"usgs":true,"family":"Kumar","given":"S.","affiliations":[],"preferred":false,"id":430869,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031218,"text":"70031218 - 2007 - Measurements of storm and nonstorm circulation in the northern Adriatic: October 2002 Through April 2003","interactions":[],"lastModifiedDate":"2012-03-12T17:21:02","indexId":"70031218","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2315,"text":"Journal of Geophysical Research C: Oceans","active":true,"publicationSubtype":{"id":10}},"title":"Measurements of storm and nonstorm circulation in the northern Adriatic: October 2002 Through April 2003","docAbstract":"Fifteen bottom-mounted Acoustic Doppler Current Profilers were deployed from October 2002 through April 2003 in the northern Adriatic Sea. Average transport from the portion of the Western Adriatic Current (WAC) along the Italian slope was 0.1470 ?? 0.0043 Sv, punctuated by bursts of more than twice that amount during storm events. Monthly means were calculated with times of strong wind-driven circulation excluded. These suggest a 2002/2003 seasonal separation consisting of October, December through February, and March through April. An extreme Po River flood influenced November conditions making seasonal categorization difficult. October generally had more kinetic energy and more vertical structure than other months, and near-inertial waves were more frequent in April and October. The Eastern Adriatic Current (EAC)/WAC (i.e. inflow/outflow) system was clearly present in the means for all months. The cyclonic gyre north of the Po River was present October through February. Generally, in the WAC, over 50% of kinetic energy came from vertically uniform monthly mean flows. Elsewhere, eddy kinetic energy was stronger than mean kinetic energy with 10-40% contributions for vertically uniform monthly mean flows, 40-60% for vertically uniform monthly varying flows, and 10-30% for vertically varying monthly varying flows. Mean currents for bora storms indicate enhancement of the EAC/WAC and the cyclonic northern gyre, a shift toward Kvarner Bay in EAC direction, a circulation null point south of the Po, and double-gyre bifurcation of flow at Istria. Strengthening of both the EAC and WAC also occurs during sirocco storms. Copyright 2007 by the American Geophysical Union.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research C: Oceans","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2006JC003556","issn":"01480227","usgsCitation":"Book, J., Signell, R.P., and Perkins, H., 2007, Measurements of storm and nonstorm circulation in the northern Adriatic: October 2002 Through April 2003: Journal of Geophysical Research C: Oceans, v. 112, no. 11, https://doi.org/10.1029/2006JC003556.","costCenters":[],"links":[{"id":211657,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2006JC003556"},{"id":238987,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"112","issue":"11","noUsgsAuthors":false,"publicationDate":"2007-11-16","publicationStatus":"PW","scienceBaseUri":"505a5336e4b0c8380cd6c94c","contributors":{"authors":[{"text":"Book, J.W.","contributorId":24566,"corporation":false,"usgs":true,"family":"Book","given":"J.W.","affiliations":[],"preferred":false,"id":430572,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Signell, R. P.","contributorId":89147,"corporation":false,"usgs":true,"family":"Signell","given":"R.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":430573,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Perkins, H.","contributorId":101871,"corporation":false,"usgs":true,"family":"Perkins","given":"H.","email":"","affiliations":[],"preferred":false,"id":430574,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031216,"text":"70031216 - 2007 - Migratory movements of pacu, <i>Piaractus mesopotamicus</i>, in the highly impounded Paraná River","interactions":[],"lastModifiedDate":"2015-04-06T11:58:53","indexId":"70031216","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2166,"text":"Journal of Applied Ichthyology","active":true,"publicationSubtype":{"id":10}},"title":"Migratory movements of pacu, <i>Piaractus mesopotamicus</i>, in the highly impounded Paraná River","docAbstract":"<p><span>A mark-recapture study was conducted in 1997&ndash;2005 to investigate movements of stocked pacu,&nbsp;</span><i>Piaractus mesopotamicus</i><span>, in the Paran&aacute; River Basin of Brazil, Paraguay, and Argentina. Fish raised in cages within the Itaipu Reservoir and in ponds were tagged externally (n&nbsp;=&nbsp;2976) and released in the Itaipu Reservoir (53.2%) and bays of its major tributaries (46.8%). In total, 367 fish (12.3%) were recaptured. In all, 91% of the pacu moved away from the release site; upstream movements were more extensive than downstream movements. Pacu traveled upstream a maximum of 422&nbsp;km (average of 41.3&nbsp;km) at a maximum rate of 26.4&nbsp;km&nbsp;day</span><sup>&minus;1</sup><span>&nbsp;(av. 0.8). Downstream movements were limited in terms of number of individuals and distance moved. Fish released during the wet season moved farther than those released during the dry season, and feeding rather than spawning might have been the compelling reason for movement. Although fish passed downstream through dams, none of the marked fish were detected to have moved upstream through the passage facilities. Pacu showed movement patterns not radically different from those of other neotropical migratory species, but their migratory movements may not be as extensive as those of other large migratory species in the basin.</span></p>","language":"English","publisher":"Wiley","doi":"10.1111/j.1439-0426.2007.01006.x","issn":"01758659","usgsCitation":"Makrakis, M., Miranda, L., Makrakis, S., Xavier, A., Fontes, H., and Morlis, W., 2007, Migratory movements of pacu, <i>Piaractus mesopotamicus</i>, in the highly impounded Paraná River: Journal of Applied Ichthyology, v. 23, no. 6, p. 700-704, https://doi.org/10.1111/j.1439-0426.2007.01006.x.","productDescription":"5 p.","startPage":"700","endPage":"704","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":477011,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1439-0426.2007.01006.x","text":"Publisher Index Page"},{"id":239018,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211680,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1439-0426.2007.01006.x"}],"country":"Argentina, Brazil, Paraguay","otherGeospatial":"Parana River","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -54.931640625,\n              -25.789999562873597\n            ],\n            [\n              -54.931640625,\n              -22.441494859380246\n            ],\n            [\n              -52.899169921875,\n              -22.441494859380246\n            ],\n            [\n              -52.899169921875,\n              -25.789999562873597\n            ],\n            [\n              -54.931640625,\n              -25.789999562873597\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"23","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5728e4b0c8380cd6dac1","contributors":{"authors":[{"text":"Makrakis, M.C.","contributorId":73406,"corporation":false,"usgs":true,"family":"Makrakis","given":"M.C.","email":"","affiliations":[],"preferred":false,"id":430569,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Miranda, L.E.","contributorId":58406,"corporation":false,"usgs":true,"family":"Miranda","given":"L.E.","affiliations":[],"preferred":false,"id":430568,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Makrakis, S.","contributorId":49592,"corporation":false,"usgs":true,"family":"Makrakis","given":"S.","email":"","affiliations":[],"preferred":false,"id":430567,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Xavier, A.M.M.","contributorId":20969,"corporation":false,"usgs":true,"family":"Xavier","given":"A.M.M.","email":"","affiliations":[],"preferred":false,"id":430565,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Fontes, H.M.","contributorId":94857,"corporation":false,"usgs":true,"family":"Fontes","given":"H.M.","email":"","affiliations":[],"preferred":false,"id":430570,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Morlis, W.G.","contributorId":31571,"corporation":false,"usgs":true,"family":"Morlis","given":"W.G.","email":"","affiliations":[],"preferred":false,"id":430566,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70031215,"text":"70031215 - 2007 - Modeling aboveground biomass of Tamarix ramosissima in the Arkansas River Basin of Southeastern Colorado, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:01","indexId":"70031215","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3746,"text":"Western North American Naturalist","onlineIssn":"1944-8341","printIssn":"1527-0904","active":true,"publicationSubtype":{"id":10}},"title":"Modeling aboveground biomass of Tamarix ramosissima in the Arkansas River Basin of Southeastern Colorado, USA","docAbstract":"Predictive models of aboveground biomass of nonnative Tamarix ramosissima of various sizes were developed using destructive sampling techniques on 50 individuals and four 100-m2 plots. Each sample was measured for average height (m) of stems and canopy area (m2) prior to cutting, drying, and weighing. Five competing regression models (P < 0.05) were developed to estimate aboveground biomass of T. ramosissima using average height and/or canopy area measurements and were evaluated using Akaike's Information Criterion corrected for small sample size (AICc). Our best model (AICc = -148.69, ??AICc = 0) successfully predicted T. ramosissima aboveground biomass (R2 = 0.97) and used average height and canopy area as predictors. Our 2nd-best model, using the same predictors, was also successful in predicting aboveground biomass (R2 = 0.97, AICc = -131.71, ??AICc = 16.98). A 3rd model demonstrated high correlation between only aboveground biomass and canopy area (R2 = 0.95), while 2 additional models found high correlations between aboveground biomass and average height measurements only (R2 = 0.90 and 0.70, respectively). These models illustrate how simple field measurements, such as height and canopy area, can be used in allometric relationships to accurately predict aboveground biomass of T. ramosissima. Although a correction factor may be necessary for predictions at larger scales, the models presented will prove useful for many research and management initiatives.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Western North American Naturalist","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.3398/1527-0904(2007)67[503:MABOTR]2.0.CO;2","issn":"15270904","usgsCitation":"Evangelista, P., Kumar, S., Stohlgren, T., Crall, A., and Newman, G., 2007, Modeling aboveground biomass of Tamarix ramosissima in the Arkansas River Basin of Southeastern Colorado, USA: Western North American Naturalist, v. 67, no. 4, p. 503-509, https://doi.org/10.3398/1527-0904(2007)67[503:MABOTR]2.0.CO;2.","startPage":"503","endPage":"509","numberOfPages":"7","costCenters":[],"links":[{"id":487624,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://scholarsarchive.byu.edu/wnan/vol67/iss4/3","text":"External Repository"},{"id":211679,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.3398/1527-0904(2007)67[503:MABOTR]2.0.CO;2"},{"id":239017,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"67","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5bcfe4b0c8380cd6f802","contributors":{"authors":[{"text":"Evangelista, P.","contributorId":21903,"corporation":false,"usgs":true,"family":"Evangelista","given":"P.","email":"","affiliations":[],"preferred":false,"id":430561,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kumar, S.","contributorId":89843,"corporation":false,"usgs":true,"family":"Kumar","given":"S.","affiliations":[],"preferred":false,"id":430564,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stohlgren, T.J.","contributorId":7217,"corporation":false,"usgs":true,"family":"Stohlgren","given":"T.J.","email":"","affiliations":[],"preferred":false,"id":430560,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Crall, A.W.","contributorId":75873,"corporation":false,"usgs":true,"family":"Crall","given":"A.W.","email":"","affiliations":[],"preferred":false,"id":430562,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Newman, G.J.","contributorId":80611,"corporation":false,"usgs":true,"family":"Newman","given":"G.J.","email":"","affiliations":[],"preferred":false,"id":430563,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70031214,"text":"70031214 - 2007 - Correcting acoustic Doppler current profiler discharge measurements biased by sediment transport","interactions":[],"lastModifiedDate":"2012-03-12T17:21:01","indexId":"70031214","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2338,"text":"Journal of Hydraulic Engineering","active":true,"publicationSubtype":{"id":10}},"title":"Correcting acoustic Doppler current profiler discharge measurements biased by sediment transport","docAbstract":"A negative bias in discharge measurements made with an acoustic Doppler current profiler (ADCP) is attributed to the movement of sediment on or near the streambed, and is an issue widely acknowledged by the scientific community. The integration of a differentially corrected global positioning system (DGPS) to track the movement of the ADCP can be used to avoid the systematic bias associated with a moving bed. DGPS, however, cannot provide consistently accurate positions because of multipath errors and satellite signal reception problems on waterways with dense tree canopy along the banks, in deep valleys or canyons, and near bridges. An alternative method of correcting for the moving-bed bias, based on the closure error resulting from a two-way crossing of the river, is presented. The uncertainty in the mean moving-bed velocity measured by the loop method is shown to be approximately 0.6cm/s. For the 13 field measurements presented, the loop method resulted in corrected discharges that were within 5% of discharges measured utilizing DGPS to compensate for moving-bed conditions. ?? 2007 ASCE.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydraulic Engineering","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1061/(ASCE)0733-9429(2007)133:12(1329)","issn":"07339429","usgsCitation":"Mueller, D.S., and Wagner, C.R., 2007, Correcting acoustic Doppler current profiler discharge measurements biased by sediment transport: Journal of Hydraulic Engineering, v. 133, no. 12, p. 1329-1336, https://doi.org/10.1061/(ASCE)0733-9429(2007)133:12(1329).","startPage":"1329","endPage":"1336","numberOfPages":"8","costCenters":[],"links":[{"id":211678,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/(ASCE)0733-9429(2007)133:12(1329)"},{"id":239016,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"133","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fc1ee4b0c8380cd4e120","contributors":{"authors":[{"text":"Mueller, D. S.","contributorId":51338,"corporation":false,"usgs":true,"family":"Mueller","given":"D.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":430558,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wagner, C. R.","contributorId":102881,"corporation":false,"usgs":true,"family":"Wagner","given":"C.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":430559,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031213,"text":"70031213 - 2007 - Evaluation of mean velocity and turbulence measurements with ADCPs","interactions":[],"lastModifiedDate":"2012-03-12T17:21:02","indexId":"70031213","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2338,"text":"Journal of Hydraulic Engineering","active":true,"publicationSubtype":{"id":10}},"title":"Evaluation of mean velocity and turbulence measurements with ADCPs","docAbstract":"To test the ability of acoustic Doppler current profilers (ADCPs) to measure turbulence, profiles measured with two pulse-to-pulse coherent ADCPs in a laboratory flume were compared to profiles measured with an acoustic Doppler velocimeter, and time series measured in the acoustic beam of the ADCPs were examined. A four-beam ADCP was used at a downstream station, while a three-beam ADCP was used at a downstream station and an upstream station. At the downstream station, where the turbulence intensity was low, both ADCPs reproduced the mean velocity profile well away from the flume boundaries; errors near the boundaries were due to transducer ringing, flow disturbance, and sidelobe interference. At the upstream station, where the turbulence intensity was higher, errors in the mean velocity were large. The four-beam ADCP measured the Reynolds stress profile accurately away from the bottom boundary, and these measurements can be used to estimate shear velocity. Estimates of Reynolds stress with a three-beam ADCP and turbulent kinetic energy with both ADCPs cannot be computed without further assumptions, and they are affected by flow inhomogeneity. Neither ADCP measured integral time scales to within 60%. ?? 2007 ASCE.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydraulic Engineering","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1061/(ASCE)0733-9429(2007)133:12(1310)","issn":"07339429","usgsCitation":"Nystrom, E., Rehmann, C., and Oberg, K.A., 2007, Evaluation of mean velocity and turbulence measurements with ADCPs: Journal of Hydraulic Engineering, v. 133, no. 12, p. 1310-1318, https://doi.org/10.1061/(ASCE)0733-9429(2007)133:12(1310).","startPage":"1310","endPage":"1318","numberOfPages":"9","costCenters":[],"links":[{"id":477186,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://lib.dr.iastate.edu/ccee_pubs/90","text":"External Repository"},{"id":238985,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211656,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/(ASCE)0733-9429(2007)133:12(1310)"}],"volume":"133","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0c96e4b0c8380cd52bec","contributors":{"authors":[{"text":"Nystrom, E.A.","contributorId":85749,"corporation":false,"usgs":true,"family":"Nystrom","given":"E.A.","email":"","affiliations":[],"preferred":false,"id":430557,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rehmann, C.R.","contributorId":7455,"corporation":false,"usgs":true,"family":"Rehmann","given":"C.R.","email":"","affiliations":[],"preferred":false,"id":430555,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Oberg, K. A.","contributorId":67553,"corporation":false,"usgs":true,"family":"Oberg","given":"K.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":430556,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031210,"text":"70031210 - 2007 - Competitive release and facilitation of drug-resistant parasites after therapeutic chemotherapy in a rodent malaria model","interactions":[],"lastModifiedDate":"2012-03-12T17:21:02","indexId":"70031210","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3165,"text":"Proceedings of the National Academy of Sciences of the United States of America","active":true,"publicationSubtype":{"id":10}},"title":"Competitive release and facilitation of drug-resistant parasites after therapeutic chemotherapy in a rodent malaria model","docAbstract":"Malaria infections frequently consist of mixtures of drug-resistant and drug-sensitive parasites. If crowding occurs, where clonal population densities are suppressed by the presence of coinfecting clones, removal of susceptible clones by drug treatment could allow resistant clones to expand into the newly vacated niche space within a host. Theoretical models show that, if such competitive release occurs, it can be a potent contributor to the strength of selection, greatly accelerating the rate at which resistance spreads in a population. A variety of correlational field data suggest that competitive release could occur in human malaria populations, but direct evidence cannot be ethically obtained from human infections. Here we show competitive release after pyrimethamine curative chemotherapy of acute infections of the rodent malaria Plasmodium chabaudi in laboratory mice. The expansion of resistant parasite numbers after treatment resulted in enhanced transmission-stage densities. After the elimination or near-elimination of sensitive parasites, the number of resistant parasites increased beyond that achieved when a competitor had never been present. Thus, a substantial competitive release occurred, markedly elevating the fitness advantages of drug resistance above those arising from survival alone. This finding may explain the rapid spread of drug resistance and the subsequently brief useful lifespans of some antimalarial drugs. In a second experiment, where subcurative chemotherapy was administered, the resistant clone was only partly released from competitive suppression and experienced a restriction in the size of its expansion after treatment. This finding raises the prospect of harnessing in-host ecology to slow the spread of drug resistance. ?? 2007 by The National Academy of Sciences of the USA.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Proceedings of the National Academy of Sciences of the United States of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1073/pnas.0707766104","issn":"00278424","usgsCitation":"Wargo, A.R., Huijben, S., De Roode, J.C., Shepherd, J., and Read, A., 2007, Competitive release and facilitation of drug-resistant parasites after therapeutic chemotherapy in a rodent malaria model: Proceedings of the National Academy of Sciences of the United States of America, v. 104, no. 50, p. 19914-19919, https://doi.org/10.1073/pnas.0707766104.","startPage":"19914","endPage":"19919","numberOfPages":"6","costCenters":[],"links":[{"id":477252,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://www.ncbi.nlm.nih.gov/pmc/articles/2148397","text":"External Repository"},{"id":211629,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1073/pnas.0707766104"},{"id":238952,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"104","issue":"50","noUsgsAuthors":false,"publicationDate":"2007-12-11","publicationStatus":"PW","scienceBaseUri":"5059f8cee4b0c8380cd4d2e6","contributors":{"authors":[{"text":"Wargo, A. R.","contributorId":28734,"corporation":false,"usgs":true,"family":"Wargo","given":"A.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":430542,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Huijben, S.","contributorId":107925,"corporation":false,"usgs":true,"family":"Huijben","given":"S.","email":"","affiliations":[],"preferred":false,"id":430545,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"De Roode, J. C.","contributorId":84561,"corporation":false,"usgs":true,"family":"De Roode","given":"J.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":430544,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Shepherd, J.","contributorId":26134,"corporation":false,"usgs":true,"family":"Shepherd","given":"J.","email":"","affiliations":[],"preferred":false,"id":430541,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Read, A.F.","contributorId":69780,"corporation":false,"usgs":true,"family":"Read","given":"A.F.","email":"","affiliations":[],"preferred":false,"id":430543,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70031209,"text":"70031209 - 2007 - Global rates of habitat loss and implications for amphibian conservation","interactions":[],"lastModifiedDate":"2017-04-12T16:14:10","indexId":"70031209","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1337,"text":"Copeia","active":true,"publicationSubtype":{"id":10}},"title":"Global rates of habitat loss and implications for amphibian conservation","docAbstract":"<p><span>A large number of factors are known to affect amphibian population viability, but most authors agree that the principal causes of amphibian declines are habitat loss, alteration, and fragmentation. We provide a global assessment of land use dynamics in the context of amphibian distributions. We accomplished this by compiling global maps of amphibian species richness and recent rates of change in land cover, land use, and human population growth. The amphibian map was developed using a combination of published literature and digital databases. We used an ecoregion framework to help interpret species distributions across environmental, rather than political, boundaries. We mapped rates of land cover and use change with statistics from the World Resources Institute, refined with a global digital dataset on land cover derived from satellite data. Temporal maps of human population were developed from the World Resources Institute database and other published sources. Our resultant map of amphibian species richness illustrates that amphibians are distributed in an uneven pattern around the globe, preferring terrestrial and freshwater habitats in ecoregions that are warm and moist. Spatiotemporal patterns of human population show that, prior to the 20</span><sup>th</sup><span> century, population growth and spread was slower, most extensive in the temperate ecoregions, and largely exclusive of major regions of high amphibian richness. Since the beginning of the 20</span><sup>th</sup><span> century, human population growth has been exponential and has occurred largely in the subtropical and tropical ecoregions favored by amphibians. Population growth has been accompanied by broad-scale changes in land cover and land use, typically in support of agriculture. We merged information on land cover, land use, and human population growth to generate a composite map showing the rates at which humans have been changing the world. When compared with the map of amphibian species richness, we found that many of the regions of the earth supporting the richest assemblages of amphibians are currently undergoing the highest rates of landscape modification.</span></p>","language":"English","publisher":"The American Society of Ichthyologists and Herpetologists","doi":"10.1643/0045-8511(2007)7[967:GROHLA]2.0.CO;2","issn":"00458511","usgsCitation":"Gallant, A.L., Klaver, R., Casper, G., and Lannoo, M., 2007, Global rates of habitat loss and implications for amphibian conservation: Copeia, v. 2007, no. 4, p. 967-979, https://doi.org/10.1643/0045-8511(2007)7[967:GROHLA]2.0.CO;2.","productDescription":"13 p.","startPage":"967","endPage":"979","numberOfPages":"13","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":238951,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"2007","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a295be4b0c8380cd5a8bc","contributors":{"authors":[{"text":"Gallant, Alisa L. 0000-0002-3029-6637","orcid":"https://orcid.org/0000-0002-3029-6637","contributorId":23508,"corporation":false,"usgs":true,"family":"Gallant","given":"Alisa","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":430538,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Klaver, R. W. 0000-0002-3263-9701","orcid":"https://orcid.org/0000-0002-3263-9701","contributorId":50267,"corporation":false,"usgs":true,"family":"Klaver","given":"R. W.","affiliations":[],"preferred":false,"id":430539,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Casper, G.S.","contributorId":73407,"corporation":false,"usgs":true,"family":"Casper","given":"G.S.","email":"","affiliations":[],"preferred":false,"id":430540,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lannoo, M.J.","contributorId":17937,"corporation":false,"usgs":true,"family":"Lannoo","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":430537,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031208,"text":"70031208 - 2007 - A circulation modeling approach for evaluating the conditions for shoreline instabilities","interactions":[],"lastModifiedDate":"2017-08-15T17:17:58","indexId":"70031208","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"A circulation modeling approach for evaluating the conditions for shoreline instabilities","docAbstract":"<p>Analytical models predict the growth (instability) of shoreline salients when deep-water waves approach the coast from highly oblique angles, contrary to classical shoreline change models in which shoreline salients can only dissipate. Using the process-based wave, circulation, and sediment transport model Delft3D, we test this prediction for simulated bathymetric and wave characteristics approximating the open-ocean conditions at Duck, North Carolina. We consider two cases: a uniform coast with a varying wave approach angle, and a bathymetry with coastal salients and a single high-angle boundary wave condition. Incident wave conditions include a swell case with no wind and a wind-wave case with active local wave regeneration by wind. The uniform-coast tests predict transport maxima at oblique wave angles for both wave cases, indicating the potential for shoreline instabilities, similar to the analytical models. However, the critical angle for instability is much higher in the wind-wave case. Our tests with coastal salients agree with previous findings that a minimum salient length scale may be required for the instability effect to be active. Here, a salient with a longshore scale of 4 km results in transport divergence (erosion; no instability) at the salient crest while an 8 km salient results in transport convergence (accretion; instability) at the crest.</p>","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","conferenceLocation":"New Orleans, LA","language":"English","publisher":"American Society of Civil Engineers","doi":"10.1061/40926(239)25","isbn":"0784409269; 9780784409268","usgsCitation":"List, J., and Ashton, A.D., 2007, A circulation modeling approach for evaluating the conditions for shoreline instabilities, <i>in</i> Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes, New Orleans, LA, p. 327-340, https://doi.org/10.1061/40926(239)25.","productDescription":"14 p.","startPage":"327","endPage":"340","numberOfPages":"14","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":238982,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211654,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/40926(239)25"}],"country":"United States","state":"North Carolina","city":"Duck","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -75.776116,36.150973 ], [ -75.776116,36.231587 ], [ -75.736833,36.231587 ], [ -75.736833,36.150973 ], [ -75.776116,36.150973 ] ] ] } } ] }","noUsgsAuthors":false,"publicationDate":"2012-04-26","publicationStatus":"PW","scienceBaseUri":"5059e341e4b0c8380cd45ef0","contributors":{"authors":[{"text":"List, Jeffrey H. jlist@usgs.gov","contributorId":2416,"corporation":false,"usgs":true,"family":"List","given":"Jeffrey H.","email":"jlist@usgs.gov","affiliations":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"preferred":false,"id":430535,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ashton, Andrew D.","contributorId":96970,"corporation":false,"usgs":true,"family":"Ashton","given":"Andrew","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":430536,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031206,"text":"70031206 - 2007 - Discontinuities in stream nutrient uptake below lakes in mountain drainage networks","interactions":[],"lastModifiedDate":"2012-03-12T17:21:02","indexId":"70031206","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":"Discontinuities in stream nutrient uptake below lakes in mountain drainage networks","docAbstract":"In many watersheds, lakes and streams are hydrologically linked in spatial patterns that influence material transport and retention. We hypothesized that lakes affect stream nutrient cycling via modifications to stream hydrogeomorphology, source-waters, and biological communities. We tested this hypothesis in a lake district of the Sawtooth Mountains, Idaho. Uptake of NO3- and PO4-3 was compared among 25 reaches representing the following landscape positions: lake inlets and outlets, reaches >1-km downstream from lakes, and reference reaches with no nearby lakes. We quantified landscape-scale hydrographic and reach-scale hydrogeomorphic, source-water, and biological variables to characterize these landscape positions and analyze relationships to nutrient uptake. Nitrate uptake was undetectable at most lake outlets, whereas PO4-3 uptake was higher at outlets as compared to reference and lake inlet reaches. Patterns in nutrient demand farther downstream were similar to lake outlets with a gradual shift toward reference-reach functionality. Nitrate uptake was most correlated to sediment mobility and channel morphology, whereas PO 4-3 uptake was most correlated to source-water characteristics. The best integrated predictor of these patterns in nutrient demand was % contributing area (the proportion of watershed area not routing through a lake). We estimate that NO3- and PO 4-3 demand returned to 50% of pre-lake conditions within 1-4-km downstream of a small headwater lake and resetting of nutrient demand was slower downstream of a larger lake set lower in a watershed. Full resetting of these nutrient cycling processes was not reached within 20-km downstream, indicating that lakes can alter stream ecosystem functioning at large spatial scales throughout mountain watersheds. ?? 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":"Arp, C., and Baker, M.A., 2007, Discontinuities in stream nutrient uptake below lakes in mountain drainage networks: Limnology and Oceanography, v. 52, no. 5, p. 1978-1990.","startPage":"1978","endPage":"1990","numberOfPages":"13","costCenters":[],"links":[{"id":238950,"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":"505a01ebe4b0c8380cd4fdb4","contributors":{"authors":[{"text":"Arp, C.D.","contributorId":54715,"corporation":false,"usgs":true,"family":"Arp","given":"C.D.","email":"","affiliations":[],"preferred":false,"id":430528,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Baker, M. A.","contributorId":94849,"corporation":false,"usgs":false,"family":"Baker","given":"M.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":430529,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031202,"text":"70031202 - 2007 - A global search inversion for earthquake kinematic rupture history: Application to the 2000 western Tottori, Japan earthquake","interactions":[],"lastModifiedDate":"2023-08-01T12:05:15.495959","indexId":"70031202","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"A global search inversion for earthquake kinematic rupture history: Application to the 2000 western Tottori, Japan earthquake","docAbstract":"<div class=\" metis-abstract\"><div class=\"article-section__content en main\"><p><span class=\"paraNumber\">[1]<span>&nbsp;</span></span>We present a two-stage nonlinear technique to invert strong motions records and geodetic data to retrieve the rupture history of an earthquake on a finite fault. To account for the actual rupture complexity, the fault parameters are spatially variable peak slip velocity, slip direction, rupture time and risetime. The unknown parameters are given at the nodes of the subfaults, whereas the parameters within a subfault are allowed to vary through a bilinear interpolation of the nodal values. The forward modeling is performed with a discrete wave number technique, whose Green's functions include the complete response of the vertically varying Earth structure. During the first stage, an algorithm based on the heat-bath simulated annealing generates an ensemble of models that efficiently sample the good data-fitting regions of parameter space. In the second stage (appraisal), the algorithm performs a statistical analysis of the model ensemble and computes a weighted mean model and its standard deviation. This technique, rather than simply looking at the best model, extracts the most stable features of the earthquake rupture that are consistent with the data and gives an estimate of the variability of each model parameter. We present some synthetic tests to show the effectiveness of the method and its robustness to uncertainty of the adopted crustal model. Finally, we apply this inverse technique to the well recorded 2000 western Tottori, Japan, earthquake (<i>Mw</i><span>&nbsp;</span>6.6); we confirm that the rupture process is characterized by large slip (3-4 m) at very shallow depths but, differently from previous studies, we imaged a new slip patch (2-2.5 m) located deeper, between 14 and 18 km depth.</p></div></div>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2006JB004821","issn":"01480227","usgsCitation":"Piatanesi, A., Cirella, A., Spudich, P., and Cocco, M., 2007, A global search inversion for earthquake kinematic rupture history: Application to the 2000 western Tottori, Japan earthquake: Journal of Geophysical Research B: Solid Earth, v. 112, no. 7, 14 p., https://doi.org/10.1029/2006JB004821.","productDescription":"14 p.","costCenters":[],"links":[{"id":238918,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Japan","otherGeospatial":"Tottori","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              133.5039337489638,\n              35.865158348737836\n            ],\n            [\n              133.5039337489638,\n              35.167967110533766\n            ],\n            [\n              134.88761741936537,\n              35.167967110533766\n            ],\n            [\n              134.88761741936537,\n              35.865158348737836\n            ],\n            [\n              133.5039337489638,\n              35.865158348737836\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"112","issue":"7","noUsgsAuthors":false,"publicationDate":"2007-07-18","publicationStatus":"PW","scienceBaseUri":"5059e40ae4b0c8380cd4638f","contributors":{"authors":[{"text":"Piatanesi, A.","contributorId":63613,"corporation":false,"usgs":true,"family":"Piatanesi","given":"A.","email":"","affiliations":[],"preferred":false,"id":430488,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cirella, A.","contributorId":100609,"corporation":false,"usgs":true,"family":"Cirella","given":"A.","affiliations":[],"preferred":false,"id":430491,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Spudich, P.","contributorId":85700,"corporation":false,"usgs":true,"family":"Spudich","given":"P.","affiliations":[],"preferred":false,"id":430490,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cocco, M.","contributorId":70128,"corporation":false,"usgs":true,"family":"Cocco","given":"M.","email":"","affiliations":[],"preferred":false,"id":430489,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031201,"text":"70031201 - 2007 - Three-dimensional P wave velocity model for the San Francisco Bay region, California","interactions":[],"lastModifiedDate":"2023-08-01T11:41:35.989038","indexId":"70031201","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Three-dimensional P wave velocity model for the San Francisco Bay region, California","docAbstract":"<div class=\"\"><div class=\"article-section__content en main\"><p><span class=\"paraNumber\">[1]<span>&nbsp;</span></span>A new three-dimensional<span>&nbsp;</span><i>P</i><span>&nbsp;</span>wave velocity model for the greater San Francisco Bay region has been derived using the double-difference seismic tomography method, using data from about 5,500 chemical explosions or air gun blasts and approximately 6,000 earthquakes. The model region covers 140 km NE-SW by 240 km NW-SE, extending from 20 km south of Monterey to Santa Rosa and reaching from the Pacific coast to the edge of the Great Valley. Our model provides the first regional view of a number of basement highs that are imaged in the uppermost few kilometers of the model, and images a number of velocity anomaly lows associated with known Mesozoic and Cenozoic basins in the study area. High velocity (<i>V</i><sub>p</sub><span>&nbsp;</span>&gt; 6.5 km/s) features at ∼15-km depth beneath part of the edge of the Great Valley and along the San Francisco peninsula are interpreted as ophiolite bodies. The relocated earthquakes provide a clear picture of the geometry of the major faults in the region, illuminating fault dips that are generally consistent with previous studies. Ninety-five percent of the earthquakes have depths between 2.3 and 15.2 km, and the corresponding seismic velocities at the hypocenters range from 4.8 km/s (presumably corresponding to Franciscan basement or Mesozoic sedimentary rocks of the Great Valley Sequence) to 6.8 km/s. The top of the seismogenic zone is thus largely controlled by basement depth, but the base of the seismogenic zone is not restricted to seismic velocities of ≤6.3 km/s in this region, as had been previously proposed.</p></div></div>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2006JB004682","issn":"01480227","usgsCitation":"Thurber, C., Brocher, T., Zhang, H., and Langenheim, V., 2007, Three-dimensional P wave velocity model for the San Francisco Bay region, California: Journal of Geophysical Research B: Solid Earth, v. 112, no. 7, 19 p., https://doi.org/10.1029/2006JB004682.","productDescription":"19 p.","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":477063,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2006jb004682","text":"Publisher Index Page"},{"id":238917,"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              -123.55068353717401,\n              38.79862353087219\n            ],\n            [\n              -123.55068353717401,\n              36.67991766947995\n            ],\n            [\n              -120.56368386773738,\n              36.67991766947995\n            ],\n            [\n              -120.56368386773738,\n              38.79862353087219\n            ],\n            [\n              -123.55068353717401,\n              38.79862353087219\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"112","issue":"7","noUsgsAuthors":false,"publicationDate":"2007-07-17","publicationStatus":"PW","scienceBaseUri":"505bb31ee4b08c986b325bba","contributors":{"authors":[{"text":"Thurber, C.H.","contributorId":28617,"corporation":false,"usgs":true,"family":"Thurber","given":"C.H.","email":"","affiliations":[],"preferred":false,"id":430484,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brocher, T.M. 0000-0002-9740-839X","orcid":"https://orcid.org/0000-0002-9740-839X","contributorId":69994,"corporation":false,"usgs":true,"family":"Brocher","given":"T.M.","affiliations":[],"preferred":false,"id":430487,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Zhang, H.","contributorId":50311,"corporation":false,"usgs":true,"family":"Zhang","given":"H.","affiliations":[],"preferred":false,"id":430485,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Langenheim, V.E. 0000-0003-2170-5213","orcid":"https://orcid.org/0000-0003-2170-5213","contributorId":54956,"corporation":false,"usgs":true,"family":"Langenheim","given":"V.E.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":false,"id":430486,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031200,"text":"70031200 - 2007 - Reducing energy-related CO<sub>2</sub> emissions using accelerated weathering of limestone","interactions":[],"lastModifiedDate":"2016-12-07T13:02:01","indexId":"70031200","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1505,"text":"Energy","active":true,"publicationSubtype":{"id":10}},"title":"Reducing energy-related CO<sub>2</sub> emissions using accelerated weathering of limestone","docAbstract":"<p><span>The use and impacts of accelerated weathering of limestone (AWL; reaction: CO</span><sub>2</sub><span>+H</span><sub>2</sub><span>O+CaCO</span><sub>3</sub><span>→Ca</span><sup>2+</sup><span>+2(HCO</span><sub>3</sub><sup>-</sup><span>) is explored as a CO</span><sub>2</sub><span> capture and sequestration method. It is shown that significant limestone resources are relatively close to a majority of CO</span><sub>2</sub><span>-emitting power plants along the coastal US, a favored siting location for AWL. Waste fines, representing more than 20% of current US crushed limestone production (&gt;10</span><sup>9</sup><span>&nbsp;tonnes/yr), could provide an inexpensive or free source of AWL carbonate. With limestone transportation then as the dominant cost variable, CO</span><sub>2</sub><span> mitigation costs of $3-$4/tonne appear to be possible in certain locations. Perhaps 10–20% of US point–source CO</span><sub>2</sub><span> emissions could be mitigated in this fashion. It is experimentally shown that CO</span><sub>2&nbsp;</sub><span>sequestration rates of 10</span><sup>-6</sup><span> to 10</span><sup>-5</sup><span>&nbsp;moles/sec&nbsp;per&nbsp;m</span><sup>2</sup><span> of limestone surface area are achievable, with reaction densities on the order of 10</span><sup>-2</sup><span>&nbsp;tonnes CO</span><sub>2</sub><span> m</span><sup>-3</sup><span>day</span><sup>-1</sup><span>, highly dependent on limestone particle size, solution turbulence and flow, and CO</span><sub>2&nbsp;</sub><span>concentration. Modeling shows that AWL would allow carbon storage in the ocean with significantly reduced impacts to seawater pH relative to direct CO</span><sub>2</sub><span> disposal into the atmosphere or sea. The addition of AWL-derived alkalinity to the ocean may itself be beneficial for marine biota.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.energy.2006.10.011","issn":"03605442","usgsCitation":"Rau, G.H., Knauss, K.G., Langer, W.H., and Caldeira, K., 2007, Reducing energy-related CO<sub>2</sub> emissions using accelerated weathering of limestone: Energy, v. 32, no. 8, p. 1471-1477, https://doi.org/10.1016/j.energy.2006.10.011.","productDescription":"7 p.","startPage":"1471","endPage":"1477","numberOfPages":"7","costCenters":[],"links":[{"id":238885,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"32","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"50e4a3cce4b0e8fec6cdb99f","contributors":{"authors":[{"text":"Rau, Greg H.","contributorId":78963,"corporation":false,"usgs":false,"family":"Rau","given":"Greg","email":"","middleInitial":"H.","affiliations":[{"id":6949,"text":"University of California, Santa Cruz","active":true,"usgs":false}],"preferred":false,"id":430481,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Knauss, Kevin G.","contributorId":177240,"corporation":false,"usgs":false,"family":"Knauss","given":"Kevin","email":"","middleInitial":"G.","affiliations":[{"id":13621,"text":"Lawrence Livermore National Laboratory","active":true,"usgs":false}],"preferred":false,"id":430483,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Langer, William H. blanger@usgs.gov","contributorId":1241,"corporation":false,"usgs":true,"family":"Langer","given":"William","email":"blanger@usgs.gov","middleInitial":"H.","affiliations":[{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true}],"preferred":false,"id":430482,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Caldeira, Ken","contributorId":12287,"corporation":false,"usgs":true,"family":"Caldeira","given":"Ken","affiliations":[],"preferred":false,"id":430480,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031199,"text":"70031199 - 2007 - Organic petrology of Paleocene Marcelina Formation coals, Paso Diablo mine, western Venezuela: Tectonic controls on coal type","interactions":[],"lastModifiedDate":"2012-03-12T17:21:17","indexId":"70031199","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2033,"text":"International Journal of Coal Geology","active":true,"publicationSubtype":{"id":10}},"title":"Organic petrology of Paleocene Marcelina Formation coals, Paso Diablo mine, western Venezuela: Tectonic controls on coal type","docAbstract":"About 7??Mt of high volatile bituminous coal are produced annually from the four coal zones of the Upper Paleocene Marcelina Formation at the Paso Diablo open-pit mine of western Venezuela. As part of an ongoing coal quality study, we have characterized twenty-two coal channel samples from the mine using organic petrology techniques. Samples also were analyzed for proximate-ultimate parameters, forms of sulfur, free swelling index, ash fusion temperatures, and calorific value. Six of the samples represent incremental benches across the 12-13??m thick No. 4 bed, the stratigraphically lowest mined coal, which is also mined at the 10??km distant Mina Norte open-pit. Organic content of the No. 4 bed indicates an upward increase of woody vegetation and/or greater preservation of organic material throughout the life of the original mire(s). An upward increase in telovitrinite and corresponding decrease in detrovitrinite and inertinite illustrate this trend. In contrast, stratigraphically higher coal groups generally exhibit a 'dulling upward' trend. The generally high inertinite content, and low ash yield and sulfur content, suggest that the Paso Diablo coals were deposited in rain-fed raised mires, protected from clastic input and subjected to frequent oxidation and/or moisture stress. However, the two thinnest coal beds (both 0.7??m thick) are each characterized by lower inertinite and higher telovitrinite content relative to the rest of Paso Diablo coal beds, indicative of less well-established raised mire environments prior to drowning. Foreland basin Paleocene coals of western Venezuela, including the Paso Diablo deposit and time-correlative coal deposits of the Ta??chira and Me??rida Andes, are characterized by high inertinite and consistently lower ash and sulfur relative to Eocene and younger coals of the area. We interpret these age-delimited coal quality characteristics to be due to water availability as a function of the tectonic control of subsidence rate. It is postulated that slower subsidence rates dominated during the Paleocene while greater foreland basin subsidence rates during the Eocene-Miocene resulted from the loading of nappe thrust sheets as part of the main construction phases of the Andean orogen. South-southeastward advance and emplacement of the Lara nappes during the oblique transpressive collision of the Caribbean and South American tectonic plates in the Paleocene was further removed from the sites of peat deposition, resulting in slower subsidence rates. Slower subsidence in the Paleocene may have favored the growth of raised mires, generating higher inertinite concentrations through more frequent moisture stress. Consistently low ash yield and sulfur content would be due to the protection from clastic input in raised mires, in addition to the leaching of mineral matter by rainfall and the development of acidic conditions preventing fixation of sulfur. In contrast, peat mires of Eocene-Miocene age encountered rapid subsidence due to the proximity of nappe emplacement, resulting in lower inertinite content, higher and more variable sulfur content, and higher ash yield.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"International Journal of Coal Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.coal.2006.05.002","issn":"01665162","usgsCitation":"Hackley, P., and Martinez, M., 2007, Organic petrology of Paleocene Marcelina Formation coals, Paso Diablo mine, western Venezuela: Tectonic controls on coal type: International Journal of Coal Geology, v. 71, no. 4, p. 505-526, https://doi.org/10.1016/j.coal.2006.05.002.","startPage":"505","endPage":"526","numberOfPages":"22","costCenters":[],"links":[{"id":238884,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211576,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.coal.2006.05.002"}],"volume":"71","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6fd6e4b0c8380cd75cc4","contributors":{"authors":[{"text":"Hackley, P.C. 0000-0002-5957-2551","orcid":"https://orcid.org/0000-0002-5957-2551","contributorId":60756,"corporation":false,"usgs":true,"family":"Hackley","given":"P.C.","affiliations":[],"preferred":false,"id":430479,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Martinez, M.","contributorId":49910,"corporation":false,"usgs":true,"family":"Martinez","given":"M.","affiliations":[],"preferred":false,"id":430478,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031196,"text":"70031196 - 2007 - Effects of anthropogenic developments on common Raven nesting biology in the west Mojave Desert","interactions":[],"lastModifiedDate":"2023-07-26T11:48:12.549559","indexId":"70031196","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1450,"text":"Ecological Applications","active":true,"publicationSubtype":{"id":10}},"title":"Effects of anthropogenic developments on common Raven nesting biology in the west Mojave Desert","docAbstract":"<p>Subsidized predators may affect prey abundance, distribution, and demography. Common Ravens (Corvus corax) are anthropogenically subsidized throughout their range and, in the Mojave Desert, have increased in number dramatically over the last 3-4 decades. Human-provided food resources are thought to be important drivers of raven population growth, but human developments add other features as well, such as nesting platforms. From 1996 to 2000, we examined the nesting ecology of ravens in the Mojave Desert, relative to anthropogenic development. Ravens nested disproportionately near point sources of food and water subsidies (such as towns, landfills, and ponds) but not near roads (sources of road-killed carrion), even though both sources of subsidy enhanced fledging success. Initiation of breeding activity was more likely when a nest from the previous year was present at the start of a breeding season but was not affected by access to food. The relative effect of environmental modifications on fledging success varied from year to year, but the effect of access to humanprovided resources was comparatively consistent, suggesting that humans provide consistently high-quality breeding habitat for ravens. Anthropogenic land cover types in the desert are expected to promote raven population growth and to allow ravens to occupy parts of the desert that otherwise would not support them. Predatory impacts of ravens in the Mojave Desert can therefore be considered indirect effects of anthropogenic development.</p>","language":"English","publisher":"Ecological Society of America","doi":"10.1890/06-1114.1","issn":"10510761","usgsCitation":"Kristan, W., and Boarman, W., 2007, Effects of anthropogenic developments on common Raven nesting biology in the west Mojave Desert: Ecological Applications, v. 17, no. 6, p. 1703-1713, https://doi.org/10.1890/06-1114.1.","productDescription":"11 p.","startPage":"1703","endPage":"1713","numberOfPages":"11","costCenters":[],"links":[{"id":238883,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Mojave Desert","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -116.71818395045116,\n              36.09370934263055\n            ],\n            [\n              -116.71818395045116,\n              33.8807150099009\n            ],\n            [\n              -114.17044893828503,\n              33.8807150099009\n            ],\n            [\n              -114.17044893828503,\n              36.09370934263055\n            ],\n            [\n              -116.71818395045116,\n              36.09370934263055\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"17","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a068de4b0c8380cd512da","contributors":{"authors":[{"text":"Kristan, W. B. III","contributorId":106444,"corporation":false,"usgs":true,"family":"Kristan","given":"W. B.","suffix":"III","affiliations":[],"preferred":false,"id":430472,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Boarman, W.I.","contributorId":73523,"corporation":false,"usgs":true,"family":"Boarman","given":"W.I.","email":"","affiliations":[],"preferred":false,"id":430471,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031189,"text":"70031189 - 2007 - Late Quaternary distal tephra-fall deposits in lacustrine sediments, Kenai Peninsula, Alaska","interactions":[],"lastModifiedDate":"2019-02-25T15:18:35","indexId":"70031189","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3218,"text":"Quaternary Research","active":true,"publicationSubtype":{"id":10}},"title":"Late Quaternary distal tephra-fall deposits in lacustrine sediments, Kenai Peninsula, Alaska","docAbstract":"<p><span>Tephra-fall deposits from Cook Inlet volcanoes were detected in sediment cores from Tustumena and Paradox Lakes, Kenai Peninsula, Alaska, using magnetic susceptibility and petrography. The ages of tephra layers were estimated using 21&nbsp;</span><span class=\"sup\">14</span><span>C ages on macrofossils. Tephras layers are typically fine, gray ash, 1–5&nbsp;mm thick, and composed of varying proportions of glass shards, pumice, and glass-coated phenocrysts. Of the two lakes, Paradox Lake contained a higher frequency of tephra (0.8 tephra/100 yr; 109 over the 13,200-yr record). The unusually large number of tephra in this lake relative to others previously studied in the area is attributed to the lake's physiography, sedimentology, and limnology. The frequency of ash fall was not constant through the Holocene. In Paradox Lake, tephra layers are absent between ca. 800–2200, 3800–4800, and 9000–10,300&nbsp;cal yr BP, despite continuously layered lacustrine sediment. In contrast, between 5000 and 9000&nbsp;cal yr BP, an average of 1.7 tephra layers are present per 100 yr. The peak period of tephra fall (7000–9000&nbsp;cal yr BP; 2.6 tephra/100 yr) in Paradox Lake is consistent with the increase in volcanism between 7000 and 9000 yr ago recorded in the Greenland ice cores.</span></p>","language":"English","publisher":"Cambridge University Press","doi":"10.1016/j.yqres.2007.03.006","issn":"00335894","usgsCitation":"de Fontaine, C., Kaufman, D.S., Scott, A.R., Werner, A., Waythomas, C.F., and Brown, T., 2007, Late Quaternary distal tephra-fall deposits in lacustrine sediments, Kenai Peninsula, Alaska: Quaternary Research, v. 68, no. 1, p. 64-78, https://doi.org/10.1016/j.yqres.2007.03.006.","productDescription":"15 p.","startPage":"64","endPage":"78","costCenters":[{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":238850,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211548,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.yqres.2007.03.006"}],"volume":"68","issue":"1","noUsgsAuthors":false,"publicationDate":"2017-01-20","publicationStatus":"PW","scienceBaseUri":"505a4525e4b0c8380cd67089","contributors":{"authors":[{"text":"de Fontaine, C.S.","contributorId":43976,"corporation":false,"usgs":true,"family":"de Fontaine","given":"C.S.","affiliations":[],"preferred":false,"id":430438,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kaufman, D. S.","contributorId":18006,"corporation":false,"usgs":false,"family":"Kaufman","given":"D.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":430436,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Scott, Anderson R.","contributorId":7909,"corporation":false,"usgs":true,"family":"Scott","given":"Anderson","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":430433,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Werner, A.","contributorId":42030,"corporation":false,"usgs":true,"family":"Werner","given":"A.","email":"","affiliations":[],"preferred":false,"id":430437,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Waythomas, Christopher F. 0000-0002-3898-272X cwaythomas@usgs.gov","orcid":"https://orcid.org/0000-0002-3898-272X","contributorId":640,"corporation":false,"usgs":true,"family":"Waythomas","given":"Christopher","email":"cwaythomas@usgs.gov","middleInitial":"F.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":430434,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Brown, T.A.","contributorId":12885,"corporation":false,"usgs":true,"family":"Brown","given":"T.A.","email":"","affiliations":[],"preferred":false,"id":430435,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70031188,"text":"70031188 - 2007 - Three-dimensional flow in the Florida platform: Theoretical analysis of Kohout convection at its type locality","interactions":[],"lastModifiedDate":"2018-10-17T08:25:36","indexId":"70031188","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Three-dimensional flow in the Florida platform: Theoretical analysis of Kohout convection at its type locality","docAbstract":"<p>Kohout convection is the name given to the circulation of saline groundwater deep within carbonate platforms, first proposed by F.A. Kohout in the 1960s for south Florida. It is now seen as an Mg pump for dolomitization by seawater. As proposed by Kohout, cold seawater is drawn into the Florida platform from the deep Straits of Florida as part of a geothermally driven circulation in which the seawater then rises in the interior of the platform to mix and exit with the discharging meteoric water of the Floridan aquifer system. Simulation of the asymmetrically emergent Florida platform with the new three-dimensional (3-D), finite-element groundwater flow and transport model SUTRA-MS, which couples salinity- and temperature-dependent density variations, allows analysis of how much of the cyclic flow is due to geothermal heating (free convection) as opposed to mixing with meteoric water discharging to the shoreline (forced convection). Simulation of the system with and without geothermal heating reveals that the inflow of seawater from the Straits of Florida would be similar without the heat flow, but the distribution would differ significantly. The addition of heat flow reduces the asymmetry of the circulation: it decreases seawater inflows on the Atlantic side by 8% and on the Guff of Mexico side by half. The study illustrates the complex interplay of freshwater-saltwater mixing, geothermal heat flow, and projected dolomitization in complicated 3-D settings with asymmetric boundary conditions and realistic horizontal and vertical variations in hydraulic properties.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/G23374A.1","issn":"00917613","usgsCitation":"Hughes, J., Vacher, H.L., and Sanford, W.E., 2007, Three-dimensional flow in the Florida platform: Theoretical analysis of Kohout convection at its type locality: Geology, v. 35, no. 7, p. 663-666, https://doi.org/10.1130/G23374A.1.","productDescription":"4 p.","startPage":"663","endPage":"666","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":238821,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211521,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/G23374A.1"}],"country":"United States","state":"Florida","volume":"35","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb327e4b08c986b325bf4","contributors":{"authors":[{"text":"Hughes, J.D.","contributorId":25539,"corporation":false,"usgs":true,"family":"Hughes","given":"J.D.","email":"","affiliations":[],"preferred":false,"id":430430,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Vacher, H. Leonard","contributorId":90529,"corporation":false,"usgs":false,"family":"Vacher","given":"H.","email":"","middleInitial":"Leonard","affiliations":[],"preferred":false,"id":430431,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sanford, Ward E. 0000-0002-6624-0280 wsanford@usgs.gov","orcid":"https://orcid.org/0000-0002-6624-0280","contributorId":2268,"corporation":false,"usgs":true,"family":"Sanford","given":"Ward","email":"wsanford@usgs.gov","middleInitial":"E.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true},{"id":37778,"text":"WMA - Integrated Modeling and Prediction Division","active":true,"usgs":true}],"preferred":true,"id":430432,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031186,"text":"70031186 - 2007 - Mineralogic constraints on sulfur-rich soils from Pancam spectra at Gusev crater, Mars","interactions":[],"lastModifiedDate":"2012-03-12T17:21:17","indexId":"70031186","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"Mineralogic constraints on sulfur-rich soils from Pancam spectra at Gusev crater, Mars","docAbstract":"The Mars Exploration Rover (MER) Spirit excavated sulfur-rich soils exhibiting high albedo and relatively white to yellow colors at three main locations on and south of Husband Hill in Gusev crater, Mars. The multispectral visible/near-infrared properties of these disturbed soils revealed by the Pancam stereo color camera vary appreciably over small spatial scales, but exhibit spectral features suggestive of ferric sulfates. Spectral mixture models constrain the mineralogy of these soils to include ferric sulfates in various states of hydration, such as ferricopiapite [Fe2/32+Fe43+ (SO4)6(OH)2??20(H2O)], hydronium jarosite [(H3O)Fe33+ (SO4)2(OH)6], fibroferrite [Fe3+(SO4)(OH)??5(H2O)], rhomboclase [HFe3+(SO4)2??4 (H2O)], and paracoquimbite [Fe23+ (SO4)3.9(H2O)]. Copyright 2007 by the American Geophysical Union.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geophysical Research Letters","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2007GL029894","issn":"00948276","usgsCitation":"Johnson, J.R., Bell, J., Cloutis, E., Staid, M., Farrand, W.H., McCoy, T., Rice, M., Wang, A., and Yen, A., 2007, Mineralogic constraints on sulfur-rich soils from Pancam spectra at Gusev crater, Mars: Geophysical Research Letters, v. 34, no. 13, https://doi.org/10.1029/2007GL029894.","costCenters":[],"links":[{"id":477204,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2007gl029894","text":"Publisher Index Page"},{"id":211547,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2007GL029894"},{"id":238849,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"34","issue":"13","noUsgsAuthors":false,"publicationDate":"2007-07-06","publicationStatus":"PW","scienceBaseUri":"505a5a8ae4b0c8380cd6ef53","contributors":{"authors":[{"text":"Johnson, J. R.","contributorId":69278,"corporation":false,"usgs":true,"family":"Johnson","given":"J.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":430421,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bell, J.F.","contributorId":36663,"corporation":false,"usgs":true,"family":"Bell","given":"J.F.","affiliations":[],"preferred":false,"id":430416,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cloutis, E.","contributorId":90184,"corporation":false,"usgs":true,"family":"Cloutis","given":"E.","email":"","affiliations":[],"preferred":false,"id":430423,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Staid, M.","contributorId":68561,"corporation":false,"usgs":true,"family":"Staid","given":"M.","email":"","affiliations":[],"preferred":false,"id":430420,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Farrand, W. H.","contributorId":64372,"corporation":false,"usgs":true,"family":"Farrand","given":"W.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":430419,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"McCoy, T.","contributorId":56776,"corporation":false,"usgs":true,"family":"McCoy","given":"T.","email":"","affiliations":[],"preferred":false,"id":430418,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Rice, M.","contributorId":32283,"corporation":false,"usgs":true,"family":"Rice","given":"M.","affiliations":[],"preferred":false,"id":430415,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Wang, A.","contributorId":46735,"corporation":false,"usgs":true,"family":"Wang","given":"A.","email":"","affiliations":[],"preferred":false,"id":430417,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Yen, A.","contributorId":76054,"corporation":false,"usgs":true,"family":"Yen","given":"A.","affiliations":[],"preferred":false,"id":430422,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}}
,{"id":70031185,"text":"70031185 - 2007 - Comparison of earthquake source spectra and attenuation in eastern North America and southeastern Australia","interactions":[],"lastModifiedDate":"2012-03-12T17:21:17","indexId":"70031185","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":"Comparison of earthquake source spectra and attenuation in eastern North America and southeastern Australia","docAbstract":"The paucity of ground-motion data in stable continental regions (SCRs) remains a key limitation when developing relations that seek to predict effects of strong ground shaking from large damaging earthquakes. It is desirable to combine data from more than one SCR to increase database size, but this raises questions as to whether the source and attenuation properties of the SCRs are equivalent. We compare recently compiled spectral-amplitude databases from small to moderate events (moment magnitudes, 2.0 ??? M ??? 5.0) in both southeastern Australia and eastern North America (ENA). Both are SCRs but are widely separated, spatially and in tectonic history. We statistically compare ground motions by plotting mean and standard deviations of spectral amplitudes for data grouped in magnitude and distance bins. These comparisons show that the source and attenuation properties of the two regions are very similar, in particular, at shorter hypocentral distances R (i.e., R < 70 km). At larger distances, regional attenuation differences are observed that may be attributed to differences in crustal structure. We conclude that it is valid to combine the Australian and ENA ground-motion datasets in the development of ground-motion prediction equations, with some limitations in frequency and distance ranges. These ground-motion relations may serve as generic functions for SCRs around the world.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Bulletin of the Seismological Society of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1785/0120060206","issn":"00371106","usgsCitation":"Allen, T., and Atkinson, G.M., 2007, Comparison of earthquake source spectra and attenuation in eastern North America and southeastern Australia: Bulletin of the Seismological Society of America, v. 97, no. 4, p. 1350-1354, https://doi.org/10.1785/0120060206.","startPage":"1350","endPage":"1354","numberOfPages":"5","costCenters":[],"links":[{"id":211546,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1785/0120060206"},{"id":238848,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"97","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f85de4b0c8380cd4d05d","contributors":{"authors":[{"text":"Allen, T.I.","contributorId":6659,"corporation":false,"usgs":true,"family":"Allen","given":"T.I.","email":"","affiliations":[],"preferred":false,"id":430413,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Atkinson, G. M.","contributorId":69283,"corporation":false,"usgs":true,"family":"Atkinson","given":"G.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":430414,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031184,"text":"70031184 - 2007 - Lithology-derived structure classification from the joint interpretation of magnetotelluric and seismic models","interactions":[],"lastModifiedDate":"2012-03-12T17:21:17","indexId":"70031184","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":"Lithology-derived structure classification from the joint interpretation of magnetotelluric and seismic models","docAbstract":"Magnetotelluric and seismic methods provide complementary information about the resistivity and velocity structure of the subsurface on similar scales and resolutions. No global relation, however, exists between these parameters, and correlations are often valid for only a limited target area. Independently derived inverse models from these methods can be combined using a classification approach to map geologic structure. The method employed is based solely on the statistical correlation of physical properties in a joint parameter space and is independent of theoretical or empirical relations linking electrical and seismic parameters. Regions of high correlation (classes) between resistivity and velocity can in turn be mapped back and re-examined in depth section. The spatial distribution of these classes, and the boundaries between them, provide structural information not evident in the individual models. This method is applied to a 10 km long profile crossing the Dead Sea Transform in Jordan. Several prominent classes are identified with specific lithologies in accordance with local geology. An abrupt change in lithology across the fault, together with vertical uplift of the basement suggest the fault is sub-vertical within the upper crust. ?? 2007 The Authors Journal compilation ?? 2007 RAS.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geophysical Journal International","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1365-246X.2007.03440.x","issn":"0956540X","usgsCitation":"Bedrosian, P.A., Maercklin, N., Weckmann, U., Bartov, Y., Ryberg, T., and Ritter, O., 2007, Lithology-derived structure classification from the joint interpretation of magnetotelluric and seismic models: Geophysical Journal International, v. 170, no. 2, p. 737-748, https://doi.org/10.1111/j.1365-246X.2007.03440.x.","startPage":"737","endPage":"748","numberOfPages":"12","costCenters":[],"links":[{"id":487681,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1365-246x.2007.03440.x","text":"Publisher Index Page"},{"id":238819,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211519,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1365-246X.2007.03440.x"}],"volume":"170","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4892e4b0c8380cd67f65","contributors":{"authors":[{"text":"Bedrosian, P. A.","contributorId":100109,"corporation":false,"usgs":true,"family":"Bedrosian","given":"P.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":430412,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Maercklin, N.","contributorId":81302,"corporation":false,"usgs":true,"family":"Maercklin","given":"N.","email":"","affiliations":[],"preferred":false,"id":430410,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Weckmann, U.","contributorId":14186,"corporation":false,"usgs":true,"family":"Weckmann","given":"U.","email":"","affiliations":[],"preferred":false,"id":430407,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bartov, Y.","contributorId":65230,"corporation":false,"usgs":true,"family":"Bartov","given":"Y.","email":"","affiliations":[],"preferred":false,"id":430409,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ryberg, T.","contributorId":91643,"corporation":false,"usgs":true,"family":"Ryberg","given":"T.","email":"","affiliations":[],"preferred":false,"id":430411,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Ritter, O.","contributorId":33515,"corporation":false,"usgs":true,"family":"Ritter","given":"O.","email":"","affiliations":[],"preferred":false,"id":430408,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70031181,"text":"70031181 - 2007 - Tree and stand transpiration in a Midwestern bur oak savanna after elm encroachment and restoration thinning","interactions":[],"lastModifiedDate":"2012-03-12T17:21:17","indexId":"70031181","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1687,"text":"Forest Ecology and Management","active":true,"publicationSubtype":{"id":10}},"title":"Tree and stand transpiration in a Midwestern bur oak savanna after elm encroachment and restoration thinning","docAbstract":"Oak savannas, once common in the Midwest, are now isolated remnants within agricultural landscapes. Savanna remnants are frequently encroached by invasive trees to become woodlands. Thinning and prescribed burning can restore savanna structure, but the ecohydrological effects of managing these remnants are poorly understood. In this study, we measured sap flow (Js) to quantify transpiration in an Iowa bur oak (Quercus macrocarpa) savanna woodland encroached by elms (Ulmus americana), and in an adjacent restored savanna after thinning to remove elms, during summer 2004. Savanna oaks had greater mean daily Js (35.9 L dm-2 day-1) than woodland oaks (20.7 L dm-2 day-1) and elms (12.4 L dm-2 day-1). The response of Js to vapor pressure deficit (D) was unexpectedly weak, although oaks in both stands showed negative correlation between daily Js and D for D > 0.4 kPa. An earlier daily peak in Js in the elm trees showed a possible advantage for water uptake. As anticipated, the woodland's stand transpiration was greater (1.23 mm day-1) than the savanna's (0.35 mm day-1), yet the savanna achieved 30% of the woodland's transpiration with only 11% of its sapwood area. The difference in transpiration influenced water table depths, which were 2 m in the savanna and 6.5 m in the woodland. Regionally, row-crop agriculture has increased groundwater recharge and raised water tables, providing surplus water that perhaps facilitated elm encroachment. This has implications for restoration of savanna remnants. If achieving a savanna ecohydrology is an aim of restoration, then restoration strategies may require buffers, or targeting of large or hydrologically isolated remnants. ?? 2007.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Forest Ecology and Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.foreco.2007.04.043","issn":"03781127","usgsCitation":"Asbjornsen, H., Tomer, M., Gomez-Cardenas, M., Brudvig, L., Greenan, C., and Schilling, K., 2007, Tree and stand transpiration in a Midwestern bur oak savanna after elm encroachment and restoration thinning: Forest Ecology and Management, v. 247, no. 1-3, p. 209-219, https://doi.org/10.1016/j.foreco.2007.04.043.","startPage":"209","endPage":"219","numberOfPages":"11","costCenters":[],"links":[{"id":211492,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.foreco.2007.04.043"},{"id":238788,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"247","issue":"1-3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb79ae4b08c986b32738a","contributors":{"authors":[{"text":"Asbjornsen, H.","contributorId":86968,"corporation":false,"usgs":true,"family":"Asbjornsen","given":"H.","affiliations":[],"preferred":false,"id":430400,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Tomer, M.D.","contributorId":77359,"corporation":false,"usgs":true,"family":"Tomer","given":"M.D.","email":"","affiliations":[],"preferred":false,"id":430398,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gomez-Cardenas, M.","contributorId":82919,"corporation":false,"usgs":true,"family":"Gomez-Cardenas","given":"M.","email":"","affiliations":[],"preferred":false,"id":430399,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Brudvig, L.A.","contributorId":28065,"corporation":false,"usgs":true,"family":"Brudvig","given":"L.A.","affiliations":[],"preferred":false,"id":430396,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Greenan, C.M.","contributorId":31198,"corporation":false,"usgs":true,"family":"Greenan","given":"C.M.","email":"","affiliations":[],"preferred":false,"id":430397,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Schilling, K.","contributorId":101423,"corporation":false,"usgs":true,"family":"Schilling","given":"K.","affiliations":[],"preferred":false,"id":430401,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70031174,"text":"70031174 - 2007 - Pesticide and transformation product detections and age-dating relations from till and sand deposits","interactions":[],"lastModifiedDate":"2012-03-12T17:21:17","indexId":"70031174","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2529,"text":"Journal of the American Water Resources Association","active":true,"publicationSubtype":{"id":10}},"title":"Pesticide and transformation product detections and age-dating relations from till and sand deposits","docAbstract":"Pesticide and transformation product concentrations and frequencies in ground water from areas of similar crop and pesticide applications may vary substantially with differing lithologies. Pesticide analysis data for atrazine, metolachlor, alachlor, acetochlor, and cyanazine and their pesticide transformation products were collected at 69 monitoring wells in Illinois and northern Indiana to document occurrence of pesticides and their transformation products in two agricultural areas of differing lithologies, till, and sand. The till is primarily tile drained and has preferential fractured flow, whereas the sand primarily has surface water drainage and primary porosity flow. Transformation products represent most of the agricultural pesticides in ground water regardless of aquifer material - till or sand. Transformation products were detected more frequently than parent pesticides in both the till and sand, with metolachlor ethane sulfonic acid being most frequently detected. Estimated ground-water recharge dates for the sand were based on chlorofluorocarbon analyses. These age-dating data indicate that ground water recharged prior to 1990 is more likely to have a detection of a pesticide or pesticide transformation product. Detections were twice as frequent in ground water recharged prior to 1990 (82%) than in ground water recharged on or after 1990 (33%). The highest concentrations of atrazine, alachlor, metolachlor, and their transformation products, also were detected in samples from ground water recharged prior to 1990. These age/pesticide detection relations are opposite of what would normally be expected, and may be the result of preferential flow and/or ground-water mixing between aquifers and aquitards as evident by the detection of acetochlor transformation products in samples with estimated ground-water ages predating initial pesticide application. ?? 2007 American Water Resources Association.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of the American Water Resources Association","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1752-1688.2007.00067.x","issn":"1093474X","usgsCitation":"Warner, K., and Morrow, W., 2007, Pesticide and transformation product detections and age-dating relations from till and sand deposits: Journal of the American Water Resources Association, v. 43, no. 4, p. 911-922, https://doi.org/10.1111/j.1752-1688.2007.00067.x.","startPage":"911","endPage":"922","numberOfPages":"12","costCenters":[],"links":[{"id":211489,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1752-1688.2007.00067.x"},{"id":238785,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"43","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-06-28","publicationStatus":"PW","scienceBaseUri":"505a7712e4b0c8380cd78403","contributors":{"authors":[{"text":"Warner, K.L.","contributorId":73781,"corporation":false,"usgs":true,"family":"Warner","given":"K.L.","email":"","affiliations":[],"preferred":false,"id":430362,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Morrow, W.S.","contributorId":106309,"corporation":false,"usgs":true,"family":"Morrow","given":"W.S.","email":"","affiliations":[],"preferred":false,"id":430363,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031173,"text":"70031173 - 2007 - Selection of den sites by black bears in the southern Appalachians","interactions":[],"lastModifiedDate":"2012-03-12T17:21:17","indexId":"70031173","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2373,"text":"Journal of Mammalogy","onlineIssn":"1545-1542","printIssn":"0022-2372","active":true,"publicationSubtype":{"id":10}},"title":"Selection of den sites by black bears in the southern Appalachians","docAbstract":"We evaluated selection of den sites by American black bears (Ursus americanus) in the Pisgah Bear Sanctuary, western North Carolina, by comparing characteristics of dens at 53 den sites with availability of habitat characteristics in annual home ranges of bears and in the study area. We also tested whether den-site selection differed by sex, age, and reproductive status of bears. In addition, we evaluated whether the den component of an existing habitat model for black bears predicted where bears would select den sites. We found bears selected den sites far from gravel roads, on steep slopes, and at high elevations relative to what was available in both annual home ranges and in the study area. Den-site selection did not differ by sex or age, but it differed by reproductive status. Adult females with cubs preferred to den in areas that were relatively far from gravel roads, but adult females without cubs did not. The habitat model overestimated the value of areas near gravel roads, underestimated the value of moderately steep areas, and did not include elevation as a predictor variable. Our results highlight the importance of evaluating den selection in terms of both use and availability of den characteristics. ?? 2007 American Society of Mammalogists.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Mammalogy","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1644/06-MAMM-A-329R1.1","issn":"00222372","usgsCitation":"Reynolds-Hogland, M.J., Mitchell, M., Powell, R.A., and Brown, D., 2007, Selection of den sites by black bears in the southern Appalachians: Journal of Mammalogy, v. 88, no. 4, p. 1062-1073, https://doi.org/10.1644/06-MAMM-A-329R1.1.","startPage":"1062","endPage":"1073","numberOfPages":"12","costCenters":[],"links":[{"id":211461,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1644/06-MAMM-A-329R1.1"},{"id":238753,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"88","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-08-20","publicationStatus":"PW","scienceBaseUri":"505b8ccee4b08c986b318135","contributors":{"authors":[{"text":"Reynolds-Hogland, M. J.","contributorId":57647,"corporation":false,"usgs":true,"family":"Reynolds-Hogland","given":"M.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":430360,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mitchell, M.S.","contributorId":26724,"corporation":false,"usgs":true,"family":"Mitchell","given":"M.S.","email":"","affiliations":[],"preferred":false,"id":430358,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Powell, R. A.","contributorId":41789,"corporation":false,"usgs":true,"family":"Powell","given":"R.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":430359,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Brown, D.C.","contributorId":70995,"corporation":false,"usgs":true,"family":"Brown","given":"D.C.","email":"","affiliations":[],"preferred":false,"id":430361,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031171,"text":"70031171 - 2007 - Effect of relative volume on radio transmitter expulsion in subadult common carp","interactions":[],"lastModifiedDate":"2012-03-12T17:21:18","indexId":"70031171","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":"Effect of relative volume on radio transmitter expulsion in subadult common carp","docAbstract":"Expulsion of surgically implanted radio transmitters is a problem in some fish telemetry studies. We conducted a 109-d experiment to test the hypothesis that variation in relative volume of transmitters surgically implanted in subadult common carp Cyprinus carpio would affect transmitter expulsion. We also necropsied fish at the end of the experiment to evaluate histological evidence for the mechanism of expulsion. Survival rate was high during our experiment; all control fish and 88% of the fish subjected to the implantation surgery survived. Expulsion rate was low; of the 23 fish that received transmitters and survived the experiment, only two (9%) expelled the transmitters. One of these expulsions occurred through a rupture of the incision and the other occurred via the intestine. Retained transmitters were all encapsulated by tissue, and most exhibited multiple adhesions to the intestine, gonads, and body wall. Adhesions were more numerous in fish that received larger transmitters. ?? Copyright by the American Fisheries Society 2007.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"North American Journal of Fisheries Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1577/M06-187.1","issn":"02755947","usgsCitation":"Penne, C., Ahrens, N., Summerfelt, R., and Pierce, C., 2007, Effect of relative volume on radio transmitter expulsion in subadult common carp: North American Journal of Fisheries Management, v. 27, no. 3, p. 986-991, https://doi.org/10.1577/M06-187.1.","startPage":"986","endPage":"991","numberOfPages":"6","costCenters":[],"links":[{"id":477004,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://lib.dr.iastate.edu/nrem_pubs/115","text":"External Repository"},{"id":211435,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1577/M06-187.1"},{"id":238722,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"27","issue":"3","noUsgsAuthors":false,"publicationDate":"2007-08-01","publicationStatus":"PW","scienceBaseUri":"505a05ffe4b0c8380cd51080","contributors":{"authors":[{"text":"Penne, C.R.","contributorId":45433,"corporation":false,"usgs":true,"family":"Penne","given":"C.R.","email":"","affiliations":[],"preferred":false,"id":430351,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ahrens, N.L.","contributorId":36747,"corporation":false,"usgs":true,"family":"Ahrens","given":"N.L.","email":"","affiliations":[],"preferred":false,"id":430350,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Summerfelt, R.C.","contributorId":66203,"corporation":false,"usgs":false,"family":"Summerfelt","given":"R.C.","email":"","affiliations":[],"preferred":false,"id":430352,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Pierce, C.L. 0000-0001-5088-5431","orcid":"https://orcid.org/0000-0001-5088-5431","contributorId":93606,"corporation":false,"usgs":true,"family":"Pierce","given":"C.L.","affiliations":[],"preferred":false,"id":430353,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
]}