{"pageNumber":"1086","pageRowStart":"27125","pageSize":"25","recordCount":40841,"records":[{"id":70027110,"text":"70027110 - 2004 - High resolution paleoceanography of the Guaymas Basin, Gulf of California, during the past 15 000 years","interactions":[],"lastModifiedDate":"2012-03-12T17:20:26","indexId":"70027110","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2673,"text":"Marine Micropaleontology","active":true,"publicationSubtype":{"id":10}},"title":"High resolution paleoceanography of the Guaymas Basin, Gulf of California, during the past 15 000 years","docAbstract":"Deep Sea Drilling Project Site 480 (27??54.10???N, 111??39.34???W; 655 m water depth) contains a high resolution record of paleoceanographic change of the past 15 000 years for the Guaymas Basin, a region of very high diatom productivity within the central Gulf of California. Analyses of diatoms and silicoflagellates were completed on samples spaced every 40-50 yr, whereas ICP-AES geochemical analyses were completed on alternate samples (sample spacing 80-100 yr). The B??lling-Aller??d interval (14.6-12.9 ka) (note, ka refers to 1000 calendar years BP throughout this report) is characterized by an increase in biogenic silica and a decline in calcium carbonate relative to surrounding intervals, suggesting conditions somewhat similar to those of today. The Younger Dryas event (12.9-11.6 ka) is marked by a major drop in biogenic silica and an increase in calcium carbonate. Increasing relative percentage contributions of Azpeitia nodulifera and Dictyocha perlaevis (a tropical diatom and silicoflagellate, respectively) and reduced numbers of the silicoflagellate Octactis pulchra are supportive of reduced upwelling of nutrient-rich waters. Between 10.6 and 10.0 ka, calcium carbonate and A. nodulifera abruptly decline at DSDP 480, while Roperia tesselata, a diatom indicative of winter upwelling in the modern-day Gulf, increases sharply in numbers. A nearly coincident increase in the silicoflagellate Dictyocha stapedia suggests that waters above DSDP 480 were more similar to the cooler and slightly more saline waters of the northern Gulf during much of the early and middle parts of the Holocene (???10 to 3.2 ka). At about 6.2 ka a stepwise increase in biogenic silica and the reappearance of the tropical diatom A. nodulifera marks a major change in oceanographic conditions in the Gulf. A winter shift to more northwesterly winds may have occurred at this time along with the onset of periodic northward excursions (El Nin??o-driven?) of the North Equatorial Countercurrent during the summer. Beginning between 2.8 and 2.4 ka, the amplitude of biogenic silica and wt% Fe, Al, and Ti (proxies of terrigenous input) increase, possibly reflecting intensification of ENSO cycles and the establishment of modern oceanographic conditions in the Gulf. Increased numbers of O. pulchra after 2.8 ka suggest enhanced spring upwelling. ?? 2003 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Marine Micropaleontology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/S0377-8398(03)00071-9","issn":"03778398","usgsCitation":"Barron, J., Bukry, D., and Bischoff, J.L., 2004, High resolution paleoceanography of the Guaymas Basin, Gulf of California, during the past 15 000 years: Marine Micropaleontology, v. 50, no. 3-4, p. 185-207, https://doi.org/10.1016/S0377-8398(03)00071-9.","startPage":"185","endPage":"207","numberOfPages":"23","costCenters":[],"links":[{"id":209170,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/S0377-8398(03)00071-9"},{"id":235407,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"50","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a30cce4b0c8380cd5d968","contributors":{"authors":[{"text":"Barron, J.A. 0000-0002-9309-1145","orcid":"https://orcid.org/0000-0002-9309-1145","contributorId":95461,"corporation":false,"usgs":true,"family":"Barron","given":"J.A.","affiliations":[],"preferred":false,"id":412384,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bukry, D.","contributorId":15338,"corporation":false,"usgs":true,"family":"Bukry","given":"D.","affiliations":[],"preferred":false,"id":412382,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bischoff, J. L.","contributorId":28969,"corporation":false,"usgs":true,"family":"Bischoff","given":"J.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":412383,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70026626,"text":"70026626 - 2004 - Wrightwood and the earthquake cycle: What a long recurrence record tells us about how faults work","interactions":[],"lastModifiedDate":"2020-09-04T15:22:54.971717","indexId":"70026626","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1728,"text":"GSA Today","active":true,"publicationSubtype":{"id":10}},"title":"Wrightwood and the earthquake cycle: What a long recurrence record tells us about how faults work","docAbstract":"The concept of the earthquake cycle is so well established that one often hears statements in the popular media like, \"the Big One is overdue\" and \"the longer it waits, the bigger it will be.\" Surprisingly, data to critically test the variability in recurrence intervals, rupture displacements, and relationships between the two are almost nonexistent. To generate a long series of earthquake intervals and offsets, we have conducted paleoseismic investigations across the San Andreas fault near the town of Wrightwood, California, excavating 45 trenches over 18 years, and can now provide some answers to basic questions about recurrence behavior of large earthquakes. To date, we have characterized at least 30 prehistoric earthquakes in a 6000-yr-long record, complete for the past 1500 yr and for the interval 3000-1500 B.C. For the past 1500 yr, the mean recurrence interval is 105 yr (31-165 yr for individual intervals) and the mean slip is 3.2 m (0.7-7 m per event). The series is slightly more ordered than random and has a notable cluster of events, during which strain was released at 3 times the long-term average rate. Slip associated with an earthquake is not well predicted by the interval preceding it, and only the largest two earthquakes appear to affect the time interval to the next earthquake. Generally, short intervals tend to coincide with large displacements and long intervals with small displacements. The most significant correlation we find is that earthquakes are more frequent following periods of net strain accumulation spanning multiple seismic cycles. The extent of paleoearthquake ruptures may be inferred by correlating event ages between different sites along the San Andreas fault. Wrightwood and other nearby sites experience rupture that could be attributed to overlap of relatively independent segments that each behave in a more regular manner. However, the data are equally consistent with a model in which the irregular behavior seen at Wrightwood typifies the entire southern San Andreas fault; more long event series will be required to definitively outline prehistoric rupture extents.","language":"English","publisher":"Geological Society of America","doi":"10.1130/1052-5173(2004)014<4:WATECW>2.0.CO;2","usgsCitation":"Weldon, R., Scharer, K., Fumal, T., and Biasi, G., 2004, Wrightwood and the earthquake cycle: What a long recurrence record tells us about how faults work: GSA Today, v. 14, no. 9, p. 4-10, https://doi.org/10.1130/1052-5173(2004)014<4:WATECW>2.0.CO;2.","productDescription":"7 p.","startPage":"4","endPage":"10","numberOfPages":"7","costCenters":[],"links":[{"id":487524,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1130/1052-5173(2004)014<4:watecw>2.0.co;2","text":"Publisher Index Page"},{"id":234420,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"San Andreas Fault, Wrightwood paleoseismic site","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -118.048095703125,\n              34.116352469972746\n            ],\n            [\n              -117.44384765625,\n              34.116352469972746\n            ],\n            [\n              -117.44384765625,\n              34.62868797377059\n            ],\n            [\n              -118.048095703125,\n              34.62868797377059\n            ],\n            [\n              -118.048095703125,\n              34.116352469972746\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"14","issue":"9","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bd1dfe4b08c986b32f5c4","contributors":{"authors":[{"text":"Weldon, R.","contributorId":99307,"corporation":false,"usgs":true,"family":"Weldon","given":"R.","affiliations":[],"preferred":false,"id":410246,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Scharer, K.","contributorId":99345,"corporation":false,"usgs":true,"family":"Scharer","given":"K.","email":"","affiliations":[],"preferred":false,"id":410247,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fumal, T.","contributorId":46692,"corporation":false,"usgs":true,"family":"Fumal","given":"T.","affiliations":[],"preferred":false,"id":410245,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Biasi, G.","contributorId":100583,"corporation":false,"usgs":true,"family":"Biasi","given":"G.","email":"","affiliations":[],"preferred":false,"id":410248,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70026452,"text":"70026452 - 2004 - Bog iron formation in the Nassawango Creek watershed, Maryland, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:20:20","indexId":"70026452","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Bog iron formation in the Nassawango Creek watershed, Maryland, USA","docAbstract":"The Nassawango bog ores in the modern environment for surficial geochemical processes were studied. The formation of Nassawango bog ores was suggested to be due to inorganic oxidation when groundwater rich in ferrous iron emerges into the oxic, surficial environment. It was suggested that the process, providing a phosphorus sink, may be an unrecognized benefit for mitigating nutrient loading from agricultural lands. It is found that without the effect of iron fixing bacteria, bog deposites could not form at significant rates.","largerWorkTitle":"Geo-Environment: Monitoring and Remedation of the Geological Environment","conferenceTitle":"First International Conference on Monitoring, Simulation and Remediation of the Ecological Environment, GEO-ENVIRONMENT 2004","conferenceDate":"5 July 2004 through 7 July 2004","conferenceLocation":"Segovia","language":"English","usgsCitation":"Bricker, O., Newell, W.L., and Simon, N., 2004, Bog iron formation in the Nassawango Creek watershed, Maryland, USA, <i>in</i> Geo-Environment: Monitoring and Remedation of the Geological Environment, Segovia, 5 July 2004 through 7 July 2004, p. 13-23.","startPage":"13","endPage":"23","numberOfPages":"11","costCenters":[],"links":[{"id":234478,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f1f8e4b0c8380cd4af2a","contributors":{"editors":[{"text":"Martin-Duque J.F.Brebbia C.A.Godfrey A.E.Diaz de Teran J.R.","contributorId":128310,"corporation":true,"usgs":false,"organization":"Martin-Duque J.F.Brebbia C.A.Godfrey A.E.Diaz de Teran J.R.","id":536605,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Bricker, O.P.","contributorId":33717,"corporation":false,"usgs":true,"family":"Bricker","given":"O.P.","affiliations":[],"preferred":false,"id":409575,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Newell, Wayne L. wnewell@usgs.gov","contributorId":99114,"corporation":false,"usgs":true,"family":"Newell","given":"Wayne","email":"wnewell@usgs.gov","middleInitial":"L.","affiliations":[],"preferred":false,"id":409576,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Simon, N.S.","contributorId":103272,"corporation":false,"usgs":true,"family":"Simon","given":"N.S.","email":"","affiliations":[],"preferred":false,"id":409577,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70026606,"text":"70026606 - 2004 - Rupture models with dynamically determined breakdown displacement","interactions":[],"lastModifiedDate":"2012-03-12T17:20:39","indexId":"70026606","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","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":"Rupture models with dynamically determined breakdown displacement","docAbstract":"The critical breakdown displacement, Dc, in which friction drops to its sliding value, can be made dependent on event size by specifying friction to be a function of variables other than slip. Two such friction laws are examined here. The first is designed to achieve accuracy and smoothness in discrete numerical calculations. Consistent resolution throughout an evolving rupture is achieved by specifying friction as a function of elapsed time after peak stress is reached. Such a time-weakening model produces Dc and fracture energy proportional to the square root of distance rupture has propagated in the case of uniform stress drop. The second friction law is more physically motivated. Energy loss in a damage zone outside the slip zone has the effect of increasing Dc and limiting peak slip velocity (Andrews, 1976). This article demonstrates a converse effect, that artificially limiting slip velocity on a fault in an elastic medium has a toughening effect, increasing fracture energy and Dc proportionally to rupture propagation distance in the case of uniform stress drop. Both the time-weakening and the velocity-toughening models can be used in calculations with heterogeneous stress drop.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Bulletin of the Seismological Society of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1785/0120030142","issn":"00371106","usgsCitation":"Andrews, D., 2004, Rupture models with dynamically determined breakdown displacement: Bulletin of the Seismological Society of America, v. 94, no. 3, p. 769-775, https://doi.org/10.1785/0120030142.","startPage":"769","endPage":"775","numberOfPages":"7","costCenters":[],"links":[{"id":208357,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1785/0120030142"},{"id":234060,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"94","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aaed5e4b0c8380cd87244","contributors":{"authors":[{"text":"Andrews, D.J.","contributorId":7416,"corporation":false,"usgs":true,"family":"Andrews","given":"D.J.","email":"","affiliations":[],"preferred":false,"id":410168,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70026598,"text":"70026598 - 2004 - Prediction of nonlinear soil effects","interactions":[],"lastModifiedDate":"2016-01-25T16:02:22","indexId":"70026598","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","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":"Prediction of nonlinear soil effects","docAbstract":"<p>Mathematical models of soil nonlinearity in common use and recently developed nonlinear codes compared to investigate the range of their predictions. We consider equivalent linear formulations with and without frequency-dependent moduli and damping ratios and nonlinear formulations for total and effective stress. Average velocity profiles to 150 m depth with midrange National Earthquake Hazards Reduction Program site classifications (B, BC, C, D, and E) in the top 30 m are used to compare the response of a wide range of site conditions from rock to soft soil. Nonlinear soil models are compared using the amplification spectrum, calculated as the ratio of surface ground motion to the input motion at the base of the velocity profile. Peak input motions from 0.1<i>g</i> to 0.9<i>g</i> are considered. For site class B, no significant differences exist between the models considered in this article. For site classes BC and C, differences are small at low input motions (0.1<i>g</i> to 0.2<i>g</i>), but become significant at higher input levels. For site classes D and E the overdamping of frequencies above about 4 Hz by the equivalent linear solution with frequency-independent parameters is apparent for the entire range of input motions considered. The equivalent linear formulation with frequency-dependent moduli and damping ratios under damps relative to the nonlinear models considered for site class C with larger input motions and most input levels for site classes D and E. At larger input motions the underdamping for site classes D and E is not as severe as the overdamping with the frequency-independent formulation, but there are still significant differences in the time domain. A nonlinear formulation is recommended for site classes D and E and for site classes BC and C with input motions greater than a few tenths of the acceleration of gravity. The type of nonlinear formulation to use is driven by considerations of the importance of water content and the availability of laboratory soils data. Our average amplification curves from a nonlinear effective stress formulation compare favorably with observed spectral amplification at class D and E sites in the Seattle area for the 2001 Nisqually earthquake.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Bulletin of the Seismological Society of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Seismological Society of America","publisherLocation":"Stanford","doi":"10.1785/012003256","issn":"00371106","usgsCitation":"Hartzell, S., Bonilla, L., and Williams, R.A., 2004, Prediction of nonlinear soil effects: Bulletin of the Seismological Society of America, v. 94, no. 5, p. 1609-1629, https://doi.org/10.1785/012003256.","productDescription":"21 p.","startPage":"1609","endPage":"1629","numberOfPages":"21","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"links":[{"id":233985,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":208317,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1785/012003256"}],"volume":"94","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a81f1e4b0c8380cd7b7fb","contributors":{"authors":[{"text":"Hartzell, S.","contributorId":12603,"corporation":false,"usgs":true,"family":"Hartzell","given":"S.","email":"","affiliations":[],"preferred":false,"id":410148,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bonilla, L.F.","contributorId":78129,"corporation":false,"usgs":true,"family":"Bonilla","given":"L.F.","email":"","affiliations":[],"preferred":false,"id":410149,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Williams, R. A.","contributorId":82323,"corporation":false,"usgs":true,"family":"Williams","given":"R.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":410150,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70027369,"text":"70027369 - 2004 - Estimating tectonic history through basin simulation-enhanced seismic inversion: Geoinformatics for sedimentary basins","interactions":[],"lastModifiedDate":"2012-03-12T17:20:50","indexId":"70027369","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","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":"Estimating tectonic history through basin simulation-enhanced seismic inversion: Geoinformatics for sedimentary basins","docAbstract":"A data assimilation approach is demonstrated whereby seismic inversion is both automated and enhanced using a comprehensive numerical sedimentary basin simulator to study the physics and chemistry of sedimentary basin processes in response to geothermal gradient in much greater detail than previously attempted. The approach not only reduces costs by integrating the basin analysis and seismic inversion activities to understand the sedimentary basin evolution with respect to geodynamic parameters-but the technique also has the potential for serving as a geoinfomatics platform for understanding various physical and chemical processes operating at different scales within a sedimentary basin. Tectonic history has a first-order effect on the physical and chemical processes that govern the evolution of sedimentary basins. We demonstrate how such tectonic parameters may be estimated by minimizing the difference between observed seismic reflection data and synthetic ones constructed from the output of a reaction, transport, mechanical (RTM) basin model. We demonstrate the method by reconstructing the geothermal gradient. As thermal history strongly affects the rate of RTM processes operating in a sedimentary basin, variations in geothermal gradient history alter the present-day fluid pressure, effective stress, porosity, fracture statistics and hydrocarbon distribution. All these properties, in turn, affect the mechanical wave velocity and sediment density profiles for a sedimentary basin. The present-day state of the sedimentary basin is imaged by reflection seismology data to a high degree of resolution, but it does not give any indication of the processes that contributed to the evolution of the basin or causes for heterogeneities within the basin that are being imaged. Using texture and fluid properties predicted by our Basin RTM simulator, we generate synthetic seismograms. Linear correlation using power spectra as an error measure and an efficient quadratic optimization technique are found to be most effective in determining the optimal value of the tectonic parameters. Preliminary 1-D studies indicate that one can determine the geothermal gradient even in the presence of observation and numerical uncertainties. The algorithm succeeds even when the synthetic data has detailed information only in a limited depth interval and has a different dominant frequency in the synthetic and observed seismograms. The methodology presented here even works when the basin input data contains only 75 per cent of the stratigraphic layering information compared with the actual basin in a limited depth interval.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geophysical Journal International","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1365-246X.2004.02126.x","issn":"0956540X","usgsCitation":"Tandon, K., Tuncay, K., Hubbard, K., Comer, J., and Ortoleva, P., 2004, Estimating tectonic history through basin simulation-enhanced seismic inversion: Geoinformatics for sedimentary basins: Geophysical Journal International, v. 156, no. 1, p. 129-139, https://doi.org/10.1111/j.1365-246X.2004.02126.x.","startPage":"129","endPage":"139","numberOfPages":"11","costCenters":[],"links":[{"id":478087,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1365-246x.2004.02126.x","text":"Publisher Index Page"},{"id":211128,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1365-246X.2004.02126.x"},{"id":238326,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"156","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0b50e4b0c8380cd5268b","contributors":{"authors":[{"text":"Tandon, K.","contributorId":53156,"corporation":false,"usgs":true,"family":"Tandon","given":"K.","email":"","affiliations":[],"preferred":false,"id":413363,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Tuncay, K.","contributorId":70181,"corporation":false,"usgs":true,"family":"Tuncay","given":"K.","email":"","affiliations":[],"preferred":false,"id":413365,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hubbard, K.","contributorId":95676,"corporation":false,"usgs":true,"family":"Hubbard","given":"K.","email":"","affiliations":[],"preferred":false,"id":413366,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Comer, J.","contributorId":106699,"corporation":false,"usgs":true,"family":"Comer","given":"J.","email":"","affiliations":[],"preferred":false,"id":413367,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ortoleva, P.","contributorId":60433,"corporation":false,"usgs":true,"family":"Ortoleva","given":"P.","affiliations":[],"preferred":false,"id":413364,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70026840,"text":"70026840 - 2004 - Effect of cell physicochemical characteristics and motility on bacterial transport in groundwater","interactions":[],"lastModifiedDate":"2012-03-12T17:20:28","indexId":"70026840","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2233,"text":"Journal of Contaminant Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Effect of cell physicochemical characteristics and motility on bacterial transport in groundwater","docAbstract":"The influence of physicochemical characteristics and motility on bacterial transport in groundwater were examined in flow-through columns. Four strains of bacteria isolated from a crystalline rock groundwater system were investigated, with carboxylate-modified and amidine-modified latex microspheres and bromide as reference tracers. The bacterial isolates included a gram-positive rod (ML1), a gram-negative motile rod (ML2), a nonmotile mutant of ML2 (ML2m), and a gram-positive coccoid (ML3). Experiments were repeated at two flow velocities, in a glass column packed with glass beads, and in another packed with iron-oxyhydroxide coated glass beads. Bacteria breakthrough curves were interpreted using a transport equation that incorporates a sorption model from microscopic observation of bacterial deposition in flow-cell experiments. The model predicts that bacterial desorption rate will decrease exponentially with the amount of time the cell is attached to the solid surface. Desorption kinetics appeared to influence transport at the lower flow rate, but were not discernable at the higher flow rate. Iron-oxyhydroxide coatings had a lower-than-expected effect on bacterial breakthrough and no effect on the microsphere recovery in the column experiments. Cell wall type and shape also had minor effects on breakthrough. Motility tended to increase the adsorption rate, and decrease the desorption rate. The transport model predicts that at field scale, desorption rate kinetics may be important to the prediction of bacteria transport rates. ?? 2003 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Contaminant Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jconhyd.2003.08.001","issn":"01697722","usgsCitation":"Becker, M., Collins, S., Metge, D., Harvey, R., and Shapiro, A., 2004, Effect of cell physicochemical characteristics and motility on bacterial transport in groundwater: Journal of Contaminant Hydrology, v. 69, no. 3-4, p. 195-213, https://doi.org/10.1016/j.jconhyd.2003.08.001.","startPage":"195","endPage":"213","numberOfPages":"19","costCenters":[],"links":[{"id":209282,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jconhyd.2003.08.001"},{"id":235573,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"69","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a05c7e4b0c8380cd50f5d","contributors":{"authors":[{"text":"Becker, M.W.","contributorId":35896,"corporation":false,"usgs":true,"family":"Becker","given":"M.W.","email":"","affiliations":[],"preferred":false,"id":411309,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Collins, S.A.","contributorId":63947,"corporation":false,"usgs":true,"family":"Collins","given":"S.A.","email":"","affiliations":[],"preferred":false,"id":411311,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Metge, D.W.","contributorId":51477,"corporation":false,"usgs":true,"family":"Metge","given":"D.W.","email":"","affiliations":[],"preferred":false,"id":411310,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Harvey, R.W. 0000-0002-2791-8503","orcid":"https://orcid.org/0000-0002-2791-8503","contributorId":11757,"corporation":false,"usgs":true,"family":"Harvey","given":"R.W.","affiliations":[],"preferred":false,"id":411308,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Shapiro, A.M. 0000-0002-6425-9607","orcid":"https://orcid.org/0000-0002-6425-9607","contributorId":88384,"corporation":false,"usgs":true,"family":"Shapiro","given":"A.M.","affiliations":[],"preferred":true,"id":411312,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70027082,"text":"70027082 - 2004 - Holocene to Pliocene tectonic evolution of the region offshore of the Los Angeles urban corridor, southern California","interactions":[],"lastModifiedDate":"2012-03-12T17:20:25","indexId":"70027082","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3524,"text":"Tectonics","active":true,"publicationSubtype":{"id":10}},"title":"Holocene to Pliocene tectonic evolution of the region offshore of the Los Angeles urban corridor, southern California","docAbstract":"Quaternary tectonism in the coastal belt of the Los Angeles urban corridor is diverse. In this paper we report the results of studies of multibeam bathymetry and a network of seismic reflection profiles that have been aimed at deciphering the diverse tectonism and at evaluating the relevance of published explanations of the region's tectonic history. Rapid uplift, subsidence in basins, folds and thrusts, extensional faulting, and strike-slip faulting have all been active at one place or another throughout the Quaternary Period. The tectonic strain is reflected in the modern physiography at all scales. Los Angeles (LA) Basin has filled from a deep submarine basin to its present condition with sediment impounded behind a large sill formed behind uplifts near the present shoreline. Newport trough to the south-southeast of LA Basin also accumulated a large volume of sediment, but remained at midbathyal depths throughout the Period. There is little or no evidence of Quaternary extensional tectonism in either basin although as much as 6 km of subsidence, which mainly occurred by sagging, has been recorded in places since the middle Miocene. The uplifts include folded and thrust faulted terranes in the Palos Verdes Hills and the shelves of Santa Monica and San Pedro Bays. The uplifted areas have been shortened in a southwest-northeast direction by 10% or slightly more, and some folds are reflected in the bathymetry. Two large adjacent midbathyal basins, Santa Monica and San Pedro, show strong evidence of subsidence and slight west-northwest extension (10%) during the same time folding was taking place in the uplifts. The tectonic boundaries between uplifts and basins are folded, normal faulted, reverse-faulted, and strike-slip faulted depending on location. The rapid Quaternary uplift and subsidence, along with the filling of LA Basin, have produced a reversal in the regional physiography. In the early Pliocene, LA Basin was a submarine deep, Palos Verdes and the shelves comprised a northeast basin slope, and the present offshore basins and Catalina Island formed an emergent or shallowly submerged shelf. Since extensional, compressional, and lateral strains are all locally in evidence, simple notions that this part of southern California underwent a change from Miocene transtension to Quaternary transpression fail to explain our observations.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Tectonics","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2003TC001504","issn":"02787407","usgsCitation":"Bohannon, R.G., Gardner, J., and Sliter, R.W., 2004, Holocene to Pliocene tectonic evolution of the region offshore of the Los Angeles urban corridor, southern California: Tectonics, v. 23, no. 1, https://doi.org/10.1029/2003TC001504.","costCenters":[],"links":[{"id":209197,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2003TC001504"},{"id":235443,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"23","issue":"1","noUsgsAuthors":false,"publicationDate":"2004-02-12","publicationStatus":"PW","scienceBaseUri":"505a31f8e4b0c8380cd5e3e1","contributors":{"authors":[{"text":"Bohannon, R. G.","contributorId":61808,"corporation":false,"usgs":true,"family":"Bohannon","given":"R.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":412288,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gardner, J.V.","contributorId":76705,"corporation":false,"usgs":true,"family":"Gardner","given":"J.V.","affiliations":[],"preferred":false,"id":412289,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sliter, R. W.","contributorId":37758,"corporation":false,"usgs":true,"family":"Sliter","given":"R.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":412287,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70026676,"text":"70026676 - 2004 - Mechanisms of electron acceptor utilization: Implications for simulating anaerobic biodegradation","interactions":[],"lastModifiedDate":"2012-03-12T17:20:40","indexId":"70026676","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2233,"text":"Journal of Contaminant Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Mechanisms of electron acceptor utilization: Implications for simulating anaerobic biodegradation","docAbstract":"Simulation of biodegradation reactions within a reactive transport framework requires information on mechanisms of terminal electron acceptor processes (TEAPs). In initial modeling efforts, TEAPs were approximated as occurring sequentially, with the highest energy-yielding electron acceptors (e.g. oxygen) consumed before those that yield less energy (e.g., sulfate). Within this framework in a steady state plume, sequential electron acceptor utilization would theoretically produce methane at an organic-rich source and Fe(II) further downgradient, resulting in a limited zone of Fe(II) and methane overlap. However, contaminant plumes often display much more extensive zones of overlapping Fe(II) and methane. The extensive overlap could be caused by several abiotic and biotic processes including vertical mixing of byproducts in long-screened monitoring wells, adsorption of Fe(II) onto aquifer solids, or microscale heterogeneity in Fe(III) concentrations. Alternatively, the overlap could be due to simultaneous utilization of terminal electron acceptors. Because biodegradation rates are controlled by TEAPs, evaluating the mechanisms of electron acceptor utilization is critical for improving prediction of contaminant mass losses due to biodegradation. Using BioRedox-MT3DMS, a three-dimensional, multi-species reactive transport code, we simulated the current configurations of a BTEX plume and TEAP zones at a petroleum- contaminated field site in Wisconsin. Simulation results suggest that BTEX mass loss due to biodegradation is greatest under oxygen-reducing conditions, with smaller but similar contributions to mass loss from biodegradation under Fe(III)-reducing, sulfate-reducing, and methanogenic conditions. Results of sensitivity calculations document that BTEX losses due to biodegradation are most sensitive to the age of the plume, while the shape of the BTEX plume is most sensitive to effective porosity and rate constants for biodegradation under Fe(III)-reducing and methanogenic conditions. Using this transport model, we had limited success in simulating overlap of redox products using reasonable ranges of parameters within a strictly sequential electron acceptor utilization framework. Simulation results indicate that overlap of redox products cannot be accurately simulated using the constructed model, suggesting either that Fe(III) reduction and methanogenesis are occurring simultaneously in the source area, or that heterogeneities in Fe(III) concentration and/or mineral type cause the observed overlap. Additional field, experimental, and modeling studies will be needed to address these questions. ?? 2004 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Contaminant Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jconhyd.2004.01.004","issn":"01697722","usgsCitation":"Schreiber, M., Carey, G., Feinstein, D.T., and Bahr, J., 2004, Mechanisms of electron acceptor utilization: Implications for simulating anaerobic biodegradation: Journal of Contaminant Hydrology, v. 73, no. 1-4, p. 99-127, https://doi.org/10.1016/j.jconhyd.2004.01.004.","startPage":"99","endPage":"127","numberOfPages":"29","costCenters":[],"links":[{"id":208410,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jconhyd.2004.01.004"},{"id":234144,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"73","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a536ee4b0c8380cd6ca9d","contributors":{"authors":[{"text":"Schreiber, M.E.","contributorId":35920,"corporation":false,"usgs":true,"family":"Schreiber","given":"M.E.","email":"","affiliations":[],"preferred":false,"id":410454,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Carey, G.R.","contributorId":18938,"corporation":false,"usgs":true,"family":"Carey","given":"G.R.","email":"","affiliations":[],"preferred":false,"id":410453,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Feinstein, D. T.","contributorId":47328,"corporation":false,"usgs":true,"family":"Feinstein","given":"D.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":410455,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bahr, J.M.","contributorId":62346,"corporation":false,"usgs":true,"family":"Bahr","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":410456,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70026288,"text":"70026288 - 2004 - Triggered deformation and seismic activity under Mammoth Mountain in Long Valley caldera by the 3 November 2002 Mw 7.9 Denali fault earthquake","interactions":[],"lastModifiedDate":"2021-07-20T11:32:15.632267","indexId":"70026288","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","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":"Triggered deformation and seismic activity under Mammoth Mountain in Long Valley caldera by the 3 November 2002 Mw 7.9 Denali fault earthquake","docAbstract":"The 3 November 2002 Mw 7.9 Denali fault earthquake triggered deformational offsets and microseismicity under Mammoth Mountain (MM) on the rim of Long Valley caldera, California, some 3460 km from the earthquake. Such strain offsets and microseismicity were not recorded at other borehole strain sites along the San Andreas fault system in California. The Long Valley offsets were recorded on borehole strainmeters at three sites around the western part of the caldera that includes Mammoth Mountain - a young volcano on the southwestern rim of the caldera. The largest recorded strain offsets were -0.1 microstrain at PO on the west side of MM, 0.05 microstrain at MX to the southeast of MM, and -0.025 microstrain at BS to the northeast of MM with negative strain extensional. High sample rate strain data show initial triggering of the offsets began at 22:30 UTC during the arrival of the first Rayleigh waves from the Alaskan earthquake with peak-to-peak dynamic strain amplitudes of about 2 microstrain corresponding to a stress amplitude of about 0.06 MPa. The strain offsets grew to their final values in the next 10 min. The associated triggered seismicity occurred beneath the south flank of MM and also began at 22:30 UTC and died away over the next 15 min. This relatively weak seismicity burst included some 60 small events with magnitude all less than M = 1. While poorly constrained, these strain observations are consistent with triggered slip and intrusive opening on a north-striking normal fault centered at a depth of 8 km with a moment of l016 N m, or the equivalent of a M 4.3 earthquake. The cumulative seismic moment for the associated seismicity burst was more than three orders of magnitude smaller. These observations and this model resemble those for the triggered deformation and slip that occurred beneath the north side of MM following the 16 October 1999 M 7.1 Hector Mine, California, earthquake. However, in this case, we see little post-event slip decay reflected in the strain data after the Rayleigh-wave arrivals from the Denali fault earthquake and onset of triggered seismicity did not lag the triggered deformation by 20 min. These observations are also distinctly different from the more widespread and energetic seismicity and deformation triggered by the 1992 M 7.3 Landers earthquake in the Long Valley caldera. Thus, each of the three instances of remotely triggered unrest in Long Valley caldera recorded to date differ. In each case, however, the deformation moment inferred from the strain meter data was more than an order of magnitude larger than the cumulative moment for the associated triggered seismicity.","language":"English","publisher":"Seismological Society of America","doi":"10.1785/0120040603","usgsCitation":"Johnston, M., Prejean, S., and Hill, D., 2004, Triggered deformation and seismic activity under Mammoth Mountain in Long Valley caldera by the 3 November 2002 Mw 7.9 Denali fault earthquake: Bulletin of the Seismological Society of America, v. 94, no. 6B, p. S360-S369, https://doi.org/10.1785/0120040603.","productDescription":"10 p.","startPage":"S360","endPage":"S369","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true},{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":234116,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Long Valley caldera","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -118.91017913818358,\n              37.707998069120265\n            ],\n            [\n              -118.85730743408203,\n              37.707998069120265\n            ],\n            [\n              -118.85730743408203,\n              37.73271097867418\n            ],\n            [\n              -118.91017913818358,\n              37.73271097867418\n            ],\n            [\n              -118.91017913818358,\n              37.707998069120265\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"94","issue":"6B","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb84ee4b08c986b3277b5","contributors":{"authors":[{"text":"Johnston, M.J.S. 0000-0003-4326-8368","orcid":"https://orcid.org/0000-0003-4326-8368","contributorId":104889,"corporation":false,"usgs":true,"family":"Johnston","given":"M.J.S.","affiliations":[],"preferred":false,"id":408875,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Prejean, S. G. 0000-0003-0510-1989","orcid":"https://orcid.org/0000-0003-0510-1989","contributorId":18935,"corporation":false,"usgs":true,"family":"Prejean","given":"S. G.","affiliations":[],"preferred":false,"id":408873,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hill, D.P.","contributorId":27432,"corporation":false,"usgs":true,"family":"Hill","given":"D.P.","email":"","affiliations":[],"preferred":false,"id":408874,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70026489,"text":"70026489 - 2004 - PCB disruption of the hypothalamus-pituitary-interrenal axis involves brain glucocorticoid receptor downregulation in anadromous Arctic charr","interactions":[],"lastModifiedDate":"2016-04-28T16:44:58","indexId":"70026489","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":730,"text":"American Journal of Physiology - Regulatory, Integrative and Comparative Physiology","onlineIssn":"1522-1490","printIssn":"0363-6119","active":true,"publicationSubtype":{"id":10}},"title":"PCB disruption of the hypothalamus-pituitary-interrenal axis involves brain glucocorticoid receptor downregulation in anadromous Arctic charr","docAbstract":"<p>We examined whether brain glucocorticoid receptor (GR) modulation by polychlorinated biphenyls (PCBs) was involved in the abnormal cortisol response to stress seen in anadromous Arctic charr (Salvelinus alpinus). Fish treated with Aroclor 1254 (0, 1, 10, and 100 mg/kg body mass) were maintained for 5 mo without feeding in the winter to mimic their seasonal fasting cycle, whereas a fed group with 0 and 100 mg/kg Aroclor was maintained for comparison. Fasting elevated plasma cortisol levels and brain GR content but depressed heat shock protein 90 (hsp90) and interrenal cortisol production capacity. Exposure of fasted fish to Aroclor 1254 resulted in a dose-dependent increase in brain total PCB content. This accumulation in fish with high PCB dose was threefold higher in fasted fish compared with fed fish. PCBs depressed plasma cortisol levels but did not affect in vitro interrenal cortisol production capacity in fasted charr. At high PCB dose, the brain GR content was significantly lower in the fasted fish and this corresponded with a lower brain hsp70 and hsp90 content. The elevation of plasma cortisol levels and upregulation of brain GR content may be an important adaptation to extended fasting in anadromous Arctic charr, and this response was disrupted by PCBs. Taken together, the hypothalamus-pituitary- interrenal axis is a target for PCB impact during winter emaciation in anadromous Arctic charr.</p>","language":"English","publisher":"American Physiological Society","doi":"10.1152/ajpregu.00091.2004","issn":"03636119","usgsCitation":"Aluru, N., Jorgensen, E., Maule, A., and Vijayan, M., 2004, PCB disruption of the hypothalamus-pituitary-interrenal axis involves brain glucocorticoid receptor downregulation in anadromous Arctic charr: American Journal of Physiology - Regulatory, Integrative and Comparative Physiology, v. 287, no. 4, p. R787-R793, https://doi.org/10.1152/ajpregu.00091.2004.","productDescription":"7 p.","startPage":"R787","endPage":"R793","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"links":[{"id":234480,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":208619,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1152/ajpregu.00091.2004"}],"volume":"287","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7332e4b0c8380cd76f02","contributors":{"authors":[{"text":"Aluru, N.","contributorId":80454,"corporation":false,"usgs":true,"family":"Aluru","given":"N.","email":"","affiliations":[],"preferred":false,"id":409712,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jorgensen, E.H.","contributorId":13782,"corporation":false,"usgs":true,"family":"Jorgensen","given":"E.H.","affiliations":[],"preferred":false,"id":409709,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Maule, A.G.","contributorId":45067,"corporation":false,"usgs":true,"family":"Maule","given":"A.G.","email":"","affiliations":[],"preferred":false,"id":409711,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Vijayan, M.M.","contributorId":33087,"corporation":false,"usgs":true,"family":"Vijayan","given":"M.M.","email":"","affiliations":[],"preferred":false,"id":409710,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70026491,"text":"70026491 - 2004 - Identifying storm flow pathways in a rainforest catchment using hydrological and geochemical modelling","interactions":[],"lastModifiedDate":"2012-03-12T17:20:39","indexId":"70026491","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1924,"text":"Hydrological Processes","active":true,"publicationSubtype":{"id":10}},"title":"Identifying storm flow pathways in a rainforest catchment using hydrological and geochemical modelling","docAbstract":"The hydrological model TOPMODEL is used to assess the water balance and describe flow paths for the 9??73 ha Lutz Creek Catchment in Central Panama. Monte Carlo results are evaluated based on their fit to the observed hydrograph, catchment-averaged soil moisture and stream chemistry. TOPMODEL, with a direct-flow mechanism that is intended to route water through rapid shallow-soil flow, matched observed chemistry and discharge better than the basic version of TOPMODEL and provided a reasonable fit to observed soil moisture and wet-season discharge at both 15-min and daily time-steps. The improvement of simulations with the implementation of a direct-flow component indicates that a storm flow path not represented in the original version of TOPMODEL plays a primary role in the response of Lutz Creek Catchment. This flow path may be consistent with the active and abundant pipeflow that is observed or delayed saturation overland flow. The 'best-accepted' simulations from 1991 to 1997 indicate that around 41% of precipitation becomes direct flow and around 10% is saturation overland flow. Other field observations are needed to constrain evaporative and groundwater losses in the model and to characterize chemical end-members posited in this paper. Published in 2004 by John Wiley and Sons, Ltd.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrological Processes","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1002/hyp.1498","issn":"08856087","usgsCitation":"Kinner, D., and Stallard, R., 2004, Identifying storm flow pathways in a rainforest catchment using hydrological and geochemical modelling: Hydrological Processes, v. 18, no. 15, p. 2851-2875, https://doi.org/10.1002/hyp.1498.","startPage":"2851","endPage":"2875","numberOfPages":"25","costCenters":[],"links":[{"id":233942,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":208290,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/hyp.1498"}],"volume":"18","issue":"15","noUsgsAuthors":false,"publicationDate":"2004-06-30","publicationStatus":"PW","scienceBaseUri":"505a385ae4b0c8380cd61538","contributors":{"authors":[{"text":"Kinner, D.A.","contributorId":99265,"corporation":false,"usgs":true,"family":"Kinner","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":409718,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stallard, R.F.","contributorId":30247,"corporation":false,"usgs":true,"family":"Stallard","given":"R.F.","email":"","affiliations":[],"preferred":false,"id":409717,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70026595,"text":"70026595 - 2004 - Aquifer vulnerability to pesticide pollution: Combining soil, land-use and aquifer properties with molecular descriptors","interactions":[],"lastModifiedDate":"2018-11-14T08:51:49","indexId":"70026595","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Aquifer vulnerability to pesticide pollution: Combining soil, land-use and aquifer properties with molecular descriptors","docAbstract":"<p>This study uses an extensive survey of herbicides in groundwater across the midwest United States to predict occurrences of a range of compounds across the region from a combination of their molecular properties and the properties of the catchment of a borehole. The study covers 100 boreholes and eight pesticides. For each of the boreholes its catchment the soil, land-use and aquifer properties were characterized. Discriminating boreholes where pollution occurred from those where no pollution occurred gave a model that was 74% correct with organic carbon content, percentage sand content and depth to the water table being significant properties of the borehole catchment. Molecular topological descriptors as well as <i>K</i><sub>oc</sub>, solubility and half-life were used to characterize each compound included in the study. Inclusion of molecular properties makes it possible to discriminate between occurrence and non-occurrence of each compound in each well. 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,{"id":70027047,"text":"70027047 - 2004 - Trace metal records of regional paleoenvironmental variability in Pennsylvanian (Upper Carboniferous) black shales","interactions":[],"lastModifiedDate":"2012-03-12T17:20:30","indexId":"70027047","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1213,"text":"Chemical Geology","active":true,"publicationSubtype":{"id":10}},"title":"Trace metal records of regional paleoenvironmental variability in Pennsylvanian (Upper Carboniferous) black shales","docAbstract":"Regional geochemical differences within a laterally continuous, cyclic Pennsylvanian (Upper Carboniferous) shale in midcontinent North America are interpreted in light of models of glacioeustatic forcing and new views on water-column paleoredox stability and trace-metal behavior in black shale environments. Specifically, we characterize differences in transition metal (Fe, Mn, Mo, V, Ni, Zn, Pb and U) concentrations in black shales of the Hushpuckney Shale Member of the Swope Limestone in Iowa and equivalent black shale beds of the Coffeyville Formation in Oklahoma. Although C-S-Fe systematics and uniform 34S-depleted isotope ratios of pyrite indicate pervasive euxinic deposition (anoxic and sulfidic bottom waters) for these shales, regional variations can be inferred for the efficiency of Mo scavenging and for the rates of siliciclastic sedimentation as expressed in spatially varying Fe/Al ratios. Black shales in Iowa show Mo enrichment roughly five times greater than that observed in coeval euxinic shales in Oklahoma. By contrast, Fe/Al ratios in Oklahoma shales are as much as five times greater than the continental ratio of 0.5 observed in the over- and underlying oxic facies and in the coeval black shales in Iowa. Recent work in modern marine settings has shown that enrichments in Fe commonly result from scavenging in a euxinic water column during syngenetic pyrite formation. In contrast to Fe, the concentrations of other transition metals (Mo, V, Ni, Pb, Zn, U) are typically more enriched in the black shales in Iowa relative to Oklahoma. The transition metal trends in these Paleozoic shales are reasonably interpreted in terms of early fixation in organic-rich sediments due to euxinic water-column conditions. However, regional variations in (1) rates of siliciclastic input, (2) organic reservoirs, including relative inputs of terrestrial versus marine organic matter, and (3) additional inputs of metals to bottom waters from contemporaneous hydrothermal vents are additional key controls that lead to geographic variation in the extent of metal enrichments preserved in ancient organic-rich sediments. Published by Elsevier B.V.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Chemical Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.chemgeo.2003.12.010","issn":"00092541","usgsCitation":"Cruse, A., and Lyons, T., 2004, Trace metal records of regional paleoenvironmental variability in Pennsylvanian (Upper Carboniferous) black shales: Chemical Geology, v. 206, no. 3-4, p. 319-345, https://doi.org/10.1016/j.chemgeo.2003.12.010.","startPage":"319","endPage":"345","numberOfPages":"27","costCenters":[],"links":[{"id":209196,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.chemgeo.2003.12.010"},{"id":235440,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"206","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb66ee4b08c986b326c74","contributors":{"authors":[{"text":"Cruse, A.M.","contributorId":12668,"corporation":false,"usgs":true,"family":"Cruse","given":"A.M.","email":"","affiliations":[],"preferred":false,"id":412120,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lyons, T.W.","contributorId":37131,"corporation":false,"usgs":true,"family":"Lyons","given":"T.W.","email":"","affiliations":[],"preferred":false,"id":412121,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70027039,"text":"70027039 - 2004 - Thematic accuracy of the 1992 National Land-Cover Data for the western United States","interactions":[],"lastModifiedDate":"2017-04-10T11:53:51","indexId":"70027039","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3254,"text":"Remote Sensing of Environment","printIssn":"0034-4257","active":true,"publicationSubtype":{"id":10}},"title":"Thematic accuracy of the 1992 National Land-Cover Data for the western United States","docAbstract":"<p><span>The MultiResolution Land Characteristics (MRLC) consortium sponsored production of the National Land Cover Data (NLCD) for the conterminous United States, using Landsat imagery collected on a target year of 1992 (1992 NLCD). Here we report the thematic accuracy of the 1992 NLCD for the six western mapping regions. Reference data were collected in each region for a probability sample of pixels stratified by map land-cover class. Results are reported for each of the six mapping regions with agreement defined as a match between the primary or alternate reference land-cover label and a mode class of the mapped 3×3 block of pixels centered on the sample pixel. Overall accuracy at Anderson Level II was low and variable across the regions, ranging from 38% for the Midwest to 70% for the Southwest. Overall accuracy at Anderson Level I was higher and more consistent across the regions, ranging from 82% to 85% for five of the six regions, but only 74% for the South-central region.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.rse.2004.04.002","issn":"00344257","usgsCitation":"Wickham, J., Stehman, S., Smith, J., and Yang, L., 2004, Thematic accuracy of the 1992 National Land-Cover Data for the western United States: Remote Sensing of Environment, v. 91, no. 3-4, p. 452-468, https://doi.org/10.1016/j.rse.2004.04.002.","productDescription":"17 p.","startPage":"452","endPage":"468","numberOfPages":"17","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":235327,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":209120,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.rse.2004.04.002"}],"volume":"91","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb1efe4b08c986b3254cf","contributors":{"authors":[{"text":"Wickham, J.D.","contributorId":28329,"corporation":false,"usgs":true,"family":"Wickham","given":"J.D.","email":"","affiliations":[],"preferred":false,"id":412099,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stehman, S.V.","contributorId":91974,"corporation":false,"usgs":false,"family":"Stehman","given":"S.V.","email":"","affiliations":[{"id":27852,"text":"State University of New York, Syracuse","active":true,"usgs":false}],"preferred":false,"id":412101,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Smith, J.H.","contributorId":49331,"corporation":false,"usgs":true,"family":"Smith","given":"J.H.","email":"","affiliations":[],"preferred":false,"id":412100,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Yang, L.","contributorId":6200,"corporation":false,"usgs":true,"family":"Yang","given":"L.","affiliations":[],"preferred":false,"id":412098,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":1016282,"text":"1016282 - 2004 - Optical characteristics of natural waters protect amphibians from UV-B in the U.S. Pacific Northwest: Reply","interactions":[],"lastModifiedDate":"2022-04-01T23:06:43.285407","indexId":"1016282","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1465,"text":"Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Optical characteristics of natural waters protect amphibians from UV-B in the U.S. Pacific Northwest: Reply","docAbstract":"<p><span>Few ecologists would dispute that exposure to high levels of ultraviolet-B radiation (UV-B) is detrimental to organisms. It is well established that UV-B has been a critical factor shaping the physiology (</span>Blum et al. 1949<span>,&nbsp;</span>Hansson 2000<span>), behavior (</span>Pennington and Emlet 1986<span>,&nbsp;</span>van de Mortel and Buttemer 1998<span>), and distribution (</span>Williamson et al. 2001<span>,&nbsp;</span>Leavitt et al. 2003<span>) of many aquatic species. Recently, increasing UV-B caused by stratospheric ozone depletion has stimulated much research on the UV-B sensitivity of a wide variety of taxa, and has been found to cause direct mortality (</span>Calkins and Thordardottir 1980<span>, reviewed by&nbsp;</span>Siebeck et al. 1994<span>), elevate developmental abnormalities (</span>Ankley et al. 2002<span>), increase susceptibility to disease (</span>Little and Fabacher 1994<span>,&nbsp;</span>Kiesecker and Blaustein 1995<span>), and change the strength of species interactions (</span>Sommaruga 2003<span>). Increasing levels of UV-B have also been invoked as an explanation for the decline of some amphibian species, and support for this hypothesis has been extrapolated from many laboratory experiments and field studies at individual sites that indicate ambient or enhanced levels of UV-B can increase mortality of embryos and larvae (but see&nbsp;</span>Licht 2003<span>). This has been an especially attractive hypothesis for amphibian populations in alpine environments where direct anthropogenic impacts such as habitat modification are limited and ambient levels of UV-B are high (</span>Blaustein and Wake 1990<span>,&nbsp;</span>Blaustein et al. 1994<span>,&nbsp;</span>Alford and Richards 1999<span>). However, for all the attention UV-B has received in the context of declining amphibian populations, there is little evidence linking the physiological sensitivity of individuals to actual population dynamics (</span>Licht 2003<span>).</span></p>","language":"English","publisher":"Ecological Society of America","doi":"10.1890/03-3171","usgsCitation":"Palen, W.J., Schindler, D.E., Adams, M.J., Pearl, C., Bury, R.B., and Diamond, S.A., 2004, Optical characteristics of natural waters protect amphibians from UV-B in the U.S. Pacific Northwest: Reply: Ecology, v. 85, no. 6, p. 1754-1759, https://doi.org/10.1890/03-3171.","productDescription":"6 p.","startPage":"1754","endPage":"1759","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":132443,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California, Oregon, Washington","otherGeospatial":"Cascade Mountain Range, Olympic Mountain Range","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -125.20019531249999,\n              48.472921272487824\n            ],\n            [\n              -123.8818359375,\n              45.84410779560204\n            ],\n            [\n              -124.78271484375,\n              42.73087427928485\n            ],\n            [\n              -124.27734374999999,\n              41.343824581185686\n            ],\n            [\n              -124.73876953125,\n              40.36328834091583\n            ],\n            [\n              -123.99169921875,\n              39.70718665682654\n            ],\n            [\n              -124.01367187499999,\n              38.71980474264237\n            ],\n            [\n              -122.1240234375,\n              38.993572058209466\n            ],\n            [\n              -122.16796875,\n              40.44694705960048\n            ],\n            [\n              -121.09130859375,\n              41.44272637767212\n            ],\n            [\n              -121.55273437499999,\n              42.74701217318067\n            ],\n            [\n              -120.84960937499999,\n              44.166444664458595\n            ],\n            [\n              -120.52001953124999,\n              45.49094569262732\n            ],\n            [\n              -119.17968749999999,\n              47.040182144806664\n            ],\n            [\n              -119.33349609375,\n              48.980216985374994\n            ],\n            [\n              -123.24462890625,\n              49.03786794532644\n            ],\n            [\n              -123.28857421875,\n              48.4146186174932\n            ],\n            [\n              -123.72802734375,\n              48.28319289548349\n            ],\n            [\n              -125.20019531249999,\n              48.472921272487824\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"85","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aefe4b07f02db69142b","contributors":{"authors":[{"text":"Palen, Wendy J.","contributorId":69513,"corporation":false,"usgs":true,"family":"Palen","given":"Wendy","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":323876,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schindler, Daniel E.","contributorId":83485,"corporation":false,"usgs":true,"family":"Schindler","given":"Daniel","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":323877,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Adams, M. J. 0000-0001-8844-042X mjadams@usgs.gov","orcid":"https://orcid.org/0000-0001-8844-042X","contributorId":3133,"corporation":false,"usgs":false,"family":"Adams","given":"M.","email":"mjadams@usgs.gov","middleInitial":"J.","affiliations":[{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true},{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true},{"id":289,"text":"Forest and Rangeland Ecosys Science Center","active":true,"usgs":true}],"preferred":true,"id":323873,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Pearl, Christopher A. 0000-0003-2943-7321","orcid":"https://orcid.org/0000-0003-2943-7321","contributorId":84316,"corporation":false,"usgs":true,"family":"Pearl","given":"Christopher A.","affiliations":[{"id":289,"text":"Forest and Rangeland Ecosys Science Center","active":true,"usgs":true}],"preferred":false,"id":323878,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Bury, R. Bruce buryb@usgs.gov","contributorId":3660,"corporation":false,"usgs":true,"family":"Bury","given":"R.","email":"buryb@usgs.gov","middleInitial":"Bruce","affiliations":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"preferred":false,"id":323875,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Diamond, S. A.","contributorId":41382,"corporation":false,"usgs":true,"family":"Diamond","given":"S.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":323874,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70026529,"text":"70026529 - 2004 - Lattice-Boltzmann simulation of coalescence-driven island coarsening","interactions":[],"lastModifiedDate":"2012-03-12T17:20:39","indexId":"70026529","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2207,"text":"Journal of Chemical Physics","active":true,"publicationSubtype":{"id":10}},"title":"Lattice-Boltzmann simulation of coalescence-driven island coarsening","docAbstract":"The first-order phase separation in a thin fluid film was simulated using a two-dimensional lattice-Boltzman model (LBM) with fluid-fluid interactions. The effects of the domain size on the intermediate asymptotic island size distribution were also discussed. It was observed that the overall process is dominated by coalescence which is independent of island mass. The results show that the combined effects of growth, coalescence, and Ostwald ripening control the phase transition process in the LBM simulations.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Chemical Physics","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1063/1.1804158","issn":"00219606","usgsCitation":"Basagaoglu, H., Green, C., Meakin, P., and McCoy, B., 2004, Lattice-Boltzmann simulation of coalescence-driven island coarsening: Journal of Chemical Physics, v. 121, no. 16, p. 7987-7995, https://doi.org/10.1063/1.1804158.","startPage":"7987","endPage":"7995","numberOfPages":"9","costCenters":[],"links":[{"id":208314,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1063/1.1804158"},{"id":233981,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"121","issue":"16","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4589e4b0c8380cd673db","contributors":{"authors":[{"text":"Basagaoglu, H.","contributorId":59211,"corporation":false,"usgs":true,"family":"Basagaoglu","given":"H.","email":"","affiliations":[],"preferred":false,"id":409902,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Green, C.T.","contributorId":73785,"corporation":false,"usgs":true,"family":"Green","given":"C.T.","email":"","affiliations":[],"preferred":false,"id":409904,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Meakin, P.","contributorId":7055,"corporation":false,"usgs":true,"family":"Meakin","given":"P.","email":"","affiliations":[],"preferred":false,"id":409901,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"McCoy, B.J.","contributorId":61216,"corporation":false,"usgs":true,"family":"McCoy","given":"B.J.","email":"","affiliations":[],"preferred":false,"id":409903,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70026594,"text":"70026594 - 2004 - An experimental demonstration of stem damage as a predictor of fire-caused mortality for ponderosa pine","interactions":[],"lastModifiedDate":"2012-03-12T17:20:22","indexId":"70026594","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1170,"text":"Canadian Journal of Forest Research","active":true,"publicationSubtype":{"id":10}},"title":"An experimental demonstration of stem damage as a predictor of fire-caused mortality for ponderosa pine","docAbstract":"We subjected 159 small ponderosa pine (Pinus ponderosa Dougl. ex P. & C. Laws.) to treatments designed to test the relative importance of stem damage as a predictor of postfire mortality. The treatments consisted of a group with the basal bark artificially thinned, a second group with fuels removed from the base of the stem, and an untreated control. Following prescribed burning, crown scorch severity was equivalent among the groups. Postfire mortality was significantly less frequent in the fuels removal group than in the bark removal and control groups. No model of mortality for the fuels removal group was possible, because dead trees constituted <4% of subject trees. Mortality in the bark removal group was best predicted by crown scorch and stem scorch severity, whereas death in the control group was predicted by crown scorch severity and bark thickness. The relative lack of mortality in the fuels removal group and the increased sensitivity to stem damage in the bark removal group suggest that stem damage is a critical determinant of postfire mortality for small ponderosa pine.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Canadian Journal of Forest Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1139/X04-001","issn":"00455067","usgsCitation":"van Mantgem, P., and Schwartz, M., 2004, An experimental demonstration of stem damage as a predictor of fire-caused mortality for ponderosa pine: Canadian Journal of Forest Research, v. 34, no. 6, p. 1343-1347, https://doi.org/10.1139/X04-001.","startPage":"1343","endPage":"1347","numberOfPages":"5","costCenters":[],"links":[{"id":234487,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":208621,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1139/X04-001"}],"volume":"34","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ea64e4b0c8380cd48827","contributors":{"authors":[{"text":"van Mantgem, P.","contributorId":99066,"corporation":false,"usgs":true,"family":"van Mantgem","given":"P.","affiliations":[],"preferred":false,"id":410139,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schwartz, M.","contributorId":67466,"corporation":false,"usgs":true,"family":"Schwartz","given":"M.","affiliations":[],"preferred":false,"id":410138,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":1016262,"text":"1016262 - 2004 - Influence of habitat heterogeneity on the distribution of larval Pacific lamprey (Lampetra tridentata) at two spatial scales","interactions":[],"lastModifiedDate":"2021-08-23T16:34:08.417968","indexId":"1016262","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1696,"text":"Freshwater Biology","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Influence of habitat heterogeneity on the distribution of larval Pacific lamprey (<i>Lampetra tridentata</i>) at two spatial scales","title":"Influence of habitat heterogeneity on the distribution of larval Pacific lamprey (Lampetra tridentata) at two spatial scales","docAbstract":"<p>1. Spatial patterns in channel morphology and substratum composition at small (1–10 metres) and large scales (1–10 kilometres) were analysed to determine the influence of habitat heterogeneity on the distribution and abundance of larval lamprey.</p><p>2. We used a nested sampling design and multiple logistic regression to evaluate spatial heterogeneity in the abundance of larval Pacific lamprey,<span>&nbsp;</span><i>Lampetra tridentata</i>, and habitat in 30 sites (each composed of twelve 1-m<sup>2</sup><span>&nbsp;</span>quadrat samples) distributed throughout a 55-km section of the Middle Fork John Day River, OR, U.SA. Statistical models predicting the relative abundance of larvae both among sites (large scale) and among samples (small scale) were ranked using Akaike's Information Criterion (AIC) to identify the ‘best approximating’ models from a set of<span>&nbsp;</span><i>a priori</i><span>&nbsp;</span>candidate models determined from the literature on larval lamprey habitat associations.</p><p>3. Stream habitat variables predicted patterns in larval abundance but played different roles at different spatial scales. The abundance of larvae at large scales was positively associated with water depth and open riparian canopy, whereas patchiness in larval occurrence at small scales was associated with low water velocity, channel-unit morphology (pool habitats), and the availability of habitat suitable for burrowing.</p><p>4. Habitat variables explained variation in larval abundance at large and small scales, but locational factors, such as longitudinal position (river km) and sample location within the channel unit, explained additional variation in the logistic regression model. The results emphasise the need for spatially explicit analysis, both in examining fish habitat relationships and in developing conservation plans for declining fish populations.</p>","language":"English","publisher":"Wiley","doi":"10.1111/j.1365-2427.2004.01215.x","usgsCitation":"Torgersen, C., and Close, D.A., 2004, Influence of habitat heterogeneity on the distribution of larval Pacific lamprey (Lampetra tridentata) at two spatial scales: Freshwater Biology, v. 49, no. 5, p. 614-630, https://doi.org/10.1111/j.1365-2427.2004.01215.x.","productDescription":"17 p.","startPage":"614","endPage":"630","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":134448,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Oregon","otherGeospatial":"Middle Fork John Day River","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -119.48043823242189,\n              44.85294822403813\n            ],\n            [\n              -119.15634155273438,\n              44.85294822403813\n            ],\n            [\n              -119.15634155273438,\n              44.93855711632049\n            ],\n            [\n              -119.48043823242189,\n              44.93855711632049\n            ],\n            [\n              -119.48043823242189,\n              44.85294822403813\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"49","issue":"5","noUsgsAuthors":false,"publicationDate":"2004-04-16","publicationStatus":"PW","scienceBaseUri":"4f4e4ab2e4b07f02db66ed2f","contributors":{"authors":[{"text":"Torgersen, Christian E. 0000-0001-8325-2737","orcid":"https://orcid.org/0000-0001-8325-2737","contributorId":48143,"corporation":false,"usgs":true,"family":"Torgersen","given":"Christian E.","affiliations":[],"preferred":false,"id":323828,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Close, David A.","contributorId":54958,"corporation":false,"usgs":true,"family":"Close","given":"David","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":323829,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70026576,"text":"70026576 - 2004 - The application of an integrated biogeochemical model (PnET-BGC) to five forested watersheds in the Adirondack and Catskill regions of New York","interactions":[],"lastModifiedDate":"2012-03-12T17:20:23","indexId":"70026576","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1924,"text":"Hydrological Processes","active":true,"publicationSubtype":{"id":10}},"title":"The application of an integrated biogeochemical model (PnET-BGC) to five forested watersheds in the Adirondack and Catskill regions of New York","docAbstract":"PnET-BGC is an integrated biogeochemical model formulated to simulate the response of soil and surface waters in northern forest ecosystems to changes in atmospheric deposition and land disturbances. In this study, the model was applied to five intensive study sites in the Adirondack and Catskill regions of New York. Four were in the Adirondacks: Constable Pond, an acid-sensitive watershed; Arbutus Pond, a relatively insensitive watershed; West Pond, an acid-sensitive watershed with extensive wetland coverage; and Willy's Pond, an acid-sensitive watershed with a mature forest. The fifth was Catskills: Biscuit Brook, an acid-sensitive watershed. Results indicated model-simulated surface water chemistry generally agreed with the measured data at all five sites. Model-simulated internal fluxes of major elements at the Arbutus watershed compared well with previously published measured values. In addition, based on the simulated fluxes, element and acid neutralizing capacity (ANC) budgets were developed for each site. Sulphur budgets at each site indicated little retention of inputs of sulphur. The sites also showed considerable variability in retention of NO3-. Land-disturbance history and in-lake processes were found to be important in regulating the output of NO3- via surface waters. Deposition inputs of base cations were generally similar at these sites. Various rates of base cation outputs reflected differences in rates of base cation supply at these sites. Atmospheric deposition was found to be the largest source of acidity, and cation exchange, mineral weathering and in-lake processes served as sources of ANC. ?? 2004 John Wiley and Sons, Ltd.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrological Processes","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1002/hyp.5571","issn":"08856087","usgsCitation":"LiJun, C., Driscoll, C.T., Gbondo-Tugbawa, S., Mitchell, M., and Murdoch, P., 2004, The application of an integrated biogeochemical model (PnET-BGC) to five forested watersheds in the Adirondack and Catskill regions of New York: Hydrological Processes, v. 18, no. 14, p. 2631-2650, https://doi.org/10.1002/hyp.5571.","startPage":"2631","endPage":"2650","numberOfPages":"20","costCenters":[],"links":[{"id":234206,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":208455,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/hyp.5571"}],"volume":"18","issue":"14","noUsgsAuthors":false,"publicationDate":"2004-10-11","publicationStatus":"PW","scienceBaseUri":"505ba9c3e4b08c986b3224cb","contributors":{"authors":[{"text":"LiJun, Chen","contributorId":95241,"corporation":false,"usgs":true,"family":"LiJun","given":"Chen","email":"","affiliations":[],"preferred":false,"id":410079,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Driscoll, C. T.","contributorId":47530,"corporation":false,"usgs":false,"family":"Driscoll","given":"C.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":410075,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gbondo-Tugbawa, S.","contributorId":84546,"corporation":false,"usgs":true,"family":"Gbondo-Tugbawa","given":"S.","email":"","affiliations":[],"preferred":false,"id":410078,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mitchell, M.J.","contributorId":72940,"corporation":false,"usgs":true,"family":"Mitchell","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":410076,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Murdoch, Peter S.","contributorId":73547,"corporation":false,"usgs":true,"family":"Murdoch","given":"Peter S.","affiliations":[],"preferred":false,"id":410077,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70156738,"text":"70156738 - 2004 - Forecasting vegetation greenness with satellite and climate data","interactions":[],"lastModifiedDate":"2015-08-27T10:57:17","indexId":"70156738","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1940,"text":"IEEE Geoscience and Remote Sensing Letters","active":true,"publicationSubtype":{"id":10}},"title":"Forecasting vegetation greenness with satellite and climate data","docAbstract":"<p><span>A new and unique vegetation greenness forecast (VGF) model was designed to predict future vegetation conditions to three months through the use of current and historical climate data and satellite imagery. The VGF model is implemented through a seasonality-adjusted autoregressive distributed-lag function, based on our finding that the normalized difference vegetation index is highly correlated with lagged precipitation and temperature. Accurate forecasts were obtained from the VGF model in Nebraska grassland and cropland. The regression R</span><span>2</span><span>&nbsp;values range from 0.97-0.80 for 2-12 week forecasts, with higher R</span><span>2</span><span>&nbsp;associated with a shorter prediction. An important application would be to produce real-time forecasts of greenness images.</span></p>","language":"English","publisher":"IEEE","doi":"10.1109/LGRS.2003.821264","usgsCitation":"Ji, L., and Peters, A.J., 2004, Forecasting vegetation greenness with satellite and climate data: IEEE Geoscience and Remote Sensing Letters, v. 1, no. 1, p. 3-6, https://doi.org/10.1109/LGRS.2003.821264.","productDescription":"4 p.","startPage":"3","endPage":"6","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":307608,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"1","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"55e034bae4b0f42e3d040e18","contributors":{"authors":[{"text":"Ji, Lei 0000-0002-6133-1036 lji@usgs.gov","orcid":"https://orcid.org/0000-0002-6133-1036","contributorId":139587,"corporation":false,"usgs":true,"family":"Ji","given":"Lei","email":"lji@usgs.gov","affiliations":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true},{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":true,"id":570318,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Peters, Albert J.","contributorId":92517,"corporation":false,"usgs":true,"family":"Peters","given":"Albert","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":570319,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70035475,"text":"70035475 - 2004 - Local sediment scour model tests for the Woodrow Wilson Bridge piers","interactions":[],"lastModifiedDate":"2012-03-12T17:21:57","indexId":"70035475","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Local sediment scour model tests for the Woodrow Wilson Bridge piers","docAbstract":"The Woodrow Wilson Bridge on I-495 over the Potomac River in Prince Georges County, Maryland is being replaced. Physical local scour model studies for the proposed piers for the new bridge were performed in order to help establish design scour depths. Tests were conducted in two different flumes, one in the USGS-BRD Conte Research Center in Turners Falls, Massachusetts and one in the FHWA Turner Fairbanks Laboratory in McLean, Virginia. Due to space limitations in this publication only the tests conducted in the USGS flume are presented in this paper. Two different pier designs were tested. One of the piers was also tested with two different diameter dolphin systems. Copyright ASCE 2004.","largerWorkTitle":"Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000: Building Partnerships","conferenceTitle":"Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000","conferenceDate":"30 July 2000 through 2 August 2000","conferenceLocation":"Minneapolis, MN","language":"English","doi":"10.1061/40517(2000)132","isbn":"0784405174; 9780784405178","usgsCitation":"Sheppard, D., Jones, J., Odeh, M., and Glasser, T., 2004, Local sediment scour model tests for the Woodrow Wilson Bridge piers, <i>in</i> Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000: Building Partnerships, v. 104, Minneapolis, MN, 30 July 2000 through 2 August 2000, https://doi.org/10.1061/40517(2000)132.","costCenters":[],"links":[{"id":215136,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/40517(2000)132"},{"id":242914,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"104","noUsgsAuthors":false,"publicationDate":"2012-04-26","publicationStatus":"PW","scienceBaseUri":"505a48e5e4b0c8380cd681df","contributors":{"authors":[{"text":"Sheppard, D.M.","contributorId":36336,"corporation":false,"usgs":true,"family":"Sheppard","given":"D.M.","email":"","affiliations":[],"preferred":false,"id":450826,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jones, J.S.","contributorId":23241,"corporation":false,"usgs":true,"family":"Jones","given":"J.S.","email":"","affiliations":[],"preferred":false,"id":450825,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Odeh, M.","contributorId":95413,"corporation":false,"usgs":true,"family":"Odeh","given":"M.","affiliations":[],"preferred":false,"id":450828,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Glasser, T.","contributorId":60421,"corporation":false,"usgs":true,"family":"Glasser","given":"T.","email":"","affiliations":[],"preferred":false,"id":450827,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70026499,"text":"70026499 - 2004 - Important observations and parameters for a salt water intrusion model","interactions":[],"lastModifiedDate":"2021-08-26T16:36:38.736359","indexId":"70026499","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1861,"text":"Ground Water","active":true,"publicationSubtype":{"id":10}},"title":"Important observations and parameters for a salt water intrusion model","docAbstract":"Sensitivity analysis with a density-dependent ground water flow simulator can provide insight and understanding of salt water intrusion calibration problems far beyond what is possible through intuitive analysis alone. Five simple experimental simulations presented here demonstrate this point. Results show that dispersivity is a very important parameter for reproducing a steady-state distribution of hydraulic head, salinity, and flow in the transition zone between fresh water and salt water in a coastal aquifer system. When estimating dispersivity, the following conclusions can be drawn about the data types and locations considered. (1) The \"toe\" of the transition zone is the most effective location for hydraulic head and salinity observations. (2) Areas near the coastline where submarine ground water discharge occurs are the most effective locations for flow observations. (3) Salinity observations are more effective than hydraulic head observations. (4) The importance of flow observations aligned perpendicular to the shoreline varies dramatically depending on distance seaward from the shoreline. Extreme parameter correlation can prohibit unique estimation of permeability parameters such as hydraulic conductivity and flow parameters such as recharge in a density-dependent ground water flow model when using hydraulic head and salinity observations. Adding flow observations perpendicular to the shoreline in areas where ground water is exchanged with the ocean body can reduce the correlation, potentially resulting in unique estimates of these parameter values. Results are expected to be directly applicable to many complex situations, and have implications for model development whether or not formal optimization methods are used in model calibration.","language":"English","publisher":"Wiley","doi":"10.1111/j.1745-6584.2004.t01-2-.x","usgsCitation":"Shoemaker, W., 2004, Important observations and parameters for a salt water intrusion model: Ground Water, v. 42, no. 6, p. 829-840, https://doi.org/10.1111/j.1745-6584.2004.t01-2-.x.","productDescription":"12 p.","startPage":"829","endPage":"840","costCenters":[{"id":275,"text":"Florida Integrated Science Center","active":false,"usgs":true}],"links":[{"id":234089,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"42","issue":"6","noUsgsAuthors":false,"publicationDate":"2008-10-09","publicationStatus":"PW","scienceBaseUri":"505a3949e4b0c8380cd6188a","contributors":{"authors":[{"text":"Shoemaker, W.B. 0000-0002-7680-377X","orcid":"https://orcid.org/0000-0002-7680-377X","contributorId":51889,"corporation":false,"usgs":true,"family":"Shoemaker","given":"W.B.","email":"","affiliations":[],"preferred":false,"id":409778,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70194311,"text":"70194311 - 2004 - Modeling demographic performance of northern spotted owls relative to forest habitat in Oregon","interactions":[],"lastModifiedDate":"2017-11-21T19:23:25","indexId":"70194311","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Modeling demographic performance of northern spotted owls relative to forest habitat in Oregon","docAbstract":"<p>Northern spotted owls (<i>Strix occidentalis caurina</i>) are known to be associated with late-successional forests in the Pacific Northwest of the United States, but the effects of habitat on their demographic performance are relatively unknown. We developed statistical models relating owl survival and productivity to forest cover types within the Roseburg Study Area in the Oregon Coast Range of Oregon, USA. We further combined these demographic parameters using a Leslie-type matrix to obtain an estimate of habitat fitness potential for each owl territory (<i>n</i> = 94). We used mark–recapture methods to develop models for survival and linear mixed models for productivity. We measured forest composition and landscape patterns at 3 landscape scales centered on nest and activity sites within owl territories using an aerial photo-based map and a Geographic Information System (GIS). We also considered additional covariates such as age, sex, and presence of barred owls (<i>Strix varia</i>), and seasonal climate variables (temperature and precipitation) in our models. We used Akaike's Information Criterion (AIC) to rank and compare models. Survival had a quadratic relationship with the amount of late- and mid-seral forests within 1,500 m of nesting centers. Survival also was influenced by the amount of precipitation during the nesting season. Only 16% of the variability in survival was accounted for by our best model, but 85% of this was due to the habitat variable. Reproductive rates fluctuated biennially and were positively related to the amount of edge between late- and mid-seral forests and other habitat classes. Reproductive rates also were influenced by parent age, amount of precipitation during nesting season, and presence of barred owls. Our best model accounted for 84% of the variability in productivity, but only 3% of that was due to the habitat variable. Estimates of habitat fitness potential (which may range from 0 to infinity) for the 94 territories ranged from 0.74 to 1.15 (<i>x̄</i> = 1.05, SE = 0.07). All but 1 territory had 95% confidence intervals overlapping 1.0, indicating a potentially stable population based on habitat pattern. Our results seem to indicate that while mid- and late-seral forests are important to owls, a mixture of these forest types with younger forest and nonforest may be best for owl survival and reproduction. Our results are consistent with those of researchers in northern California, USA, who used similar methods in their analyses. However, we believe that given the low variability in survival and productivity attributed to habitat, further study is needed to confirm our conclusions before they can be used to guide forest management actions for spotted owls.</p>","language":"English","publisher":"The Wildlife Society","doi":"10.2193/0022-541X(2004)068[1039:MDPONS]2.0.CO;2","usgsCitation":"Olson, G.S., Glenn, E.M., Anthony, R., Forsman, E.D., Reid, J.A., Loschl, P.J., and Ripple, W.J., 2004, Modeling demographic performance of northern spotted owls relative to forest habitat in Oregon: Journal of Wildlife Management, v. 68, no. 4, p. 1039-1053, https://doi.org/10.2193/0022-541X(2004)068[1039:MDPONS]2.0.CO;2.","productDescription":"15 p.","startPage":"1039","endPage":"1053","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":349254,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"68","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5a61194be4b06e28e9c2597f","contributors":{"authors":[{"text":"Olson, Gail S.","contributorId":19884,"corporation":false,"usgs":true,"family":"Olson","given":"Gail","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":723220,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Glenn, Elizabeth M.","contributorId":150580,"corporation":false,"usgs":false,"family":"Glenn","given":"Elizabeth","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":723221,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Anthony, Robert G.","contributorId":61324,"corporation":false,"usgs":true,"family":"Anthony","given":"Robert G.","affiliations":[],"preferred":false,"id":723222,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Forsman, Eric D.","contributorId":96792,"corporation":false,"usgs":false,"family":"Forsman","given":"Eric","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":723223,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Reid, Janice A.","contributorId":98034,"corporation":false,"usgs":true,"family":"Reid","given":"Janice","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":723224,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Loschl, Peter J.","contributorId":7195,"corporation":false,"usgs":true,"family":"Loschl","given":"Peter","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":723225,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Ripple, William J.","contributorId":24271,"corporation":false,"usgs":true,"family":"Ripple","given":"William","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":723226,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70035474,"text":"70035474 - 2004 - Using borehole flow data to characterize the hydraulics of flow paths in operating wellfields","interactions":[],"lastModifiedDate":"2012-03-12T17:21:57","indexId":"70035474","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Using borehole flow data to characterize the hydraulics of flow paths in operating wellfields","docAbstract":"Understanding the flow paths in the vicinity of water well intakes is critical in the design of effective wellhead protection strategies for heterogeneous carbonate aquifers. High-resolution flow logs can be combined with geophysical logs and borehole-wall-image logs (acoustic televiewer) to identify the porous beds, solution openings, and fractures serving as conduits connecting the well bore to the aquifer. Qualitative methods of flow log analysis estimate the relative transmissivity of each water-producing zone, but do not indicate how those zones are connected to the far-field aquifer. Borehole flow modeling techniques can be used to provide quantitative estimates of both transmissivity and far-field hydraulic head in each producing zone. These data can be used to infer how the individual zones are connected with each other, and to the surrounding large-scale aquifer. Such information is useful in land-use planning and the design of well intakes to prevent entrainment of contaminants into water-supply systems. Specific examples of flow log applications in the identification of flow paths in operating wellfields are given for sites in Austin and Faribault, Minnesota. Copyright ASCE 2004.","largerWorkTitle":"Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000: Building Partnerships","conferenceTitle":"Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000","conferenceDate":"30 July 2000 through 2 August 2000","conferenceLocation":"Minneapolis, MN","language":"English","doi":"10.1061/40517(2000)384","isbn":"0784405174; 9780784405178","usgsCitation":"Paillet, F., and Lundy, J., 2004, Using borehole flow data to characterize the hydraulics of flow paths in operating wellfields, <i>in</i> Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000: Building Partnerships, v. 104, Minneapolis, MN, 30 July 2000 through 2 August 2000, https://doi.org/10.1061/40517(2000)384.","costCenters":[],"links":[{"id":215135,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/40517(2000)384"},{"id":242913,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"104","noUsgsAuthors":false,"publicationDate":"2012-04-26","publicationStatus":"PW","scienceBaseUri":"505bc037e4b08c986b329fc4","contributors":{"authors":[{"text":"Paillet, F.","contributorId":73372,"corporation":false,"usgs":true,"family":"Paillet","given":"F.","email":"","affiliations":[],"preferred":false,"id":450824,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lundy, J.","contributorId":38380,"corporation":false,"usgs":true,"family":"Lundy","given":"J.","email":"","affiliations":[],"preferred":false,"id":450823,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
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