{"pageNumber":"1014","pageRowStart":"25325","pageSize":"25","recordCount":46734,"records":[{"id":70026321,"text":"70026321 - 2004 - Methods for determining manning's coefficients for Illinois streams","interactions":[],"lastModifiedDate":"2012-03-12T17:20:37","indexId":"70026321","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Methods for determining manning's coefficients for Illinois streams","docAbstract":"Determination of Manning's coefficient, n, for natural streams remains a challenge in practices. One source for determining the n-values that has received practitioners' attention is presenting the n-values determined from field data (measured discharge and water-surface slope) in combination of photographs and site descriptions (ancillary information). Further improvements in the visual approach can be made in presenting site characteristics and describing site ancillary information. In this manner, users can use the presented information for sites of interest with similar features. This approach in a current project on the subject for Illinois streams is discussed.","largerWorkTitle":"Proceedings of the 2004 World Water and Environmetal Resources Congress: Critical Transitions in Water and Environmetal Resources Management","conferenceTitle":"2004 World Water and Environmental Resources Congress: Critical Transitions in Water and Environmental Resources Management","conferenceDate":"27 June 2004 through 1 July 2004","conferenceLocation":"Salt Lake City, UT","language":"English","isbn":"0784407371","usgsCitation":"Soong, D., Halfar, T., Jupin, M., and Wobig, L., 2004, Methods for determining manning's coefficients for Illinois streams, in Proceedings of the 2004 World Water and Environmetal Resources Congress: Critical Transitions in Water and Environmetal Resources Management, Salt Lake City, UT, 27 June 2004 through 1 July 2004, p. 1354-1363.","startPage":"1354","endPage":"1363","numberOfPages":"10","costCenters":[],"links":[{"id":234118,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a55afe4b0c8380cd6d26c","contributors":{"editors":[{"text":"Sehlke G.Hayes D.F.Stevens D.K.","contributorId":128420,"corporation":true,"usgs":false,"organization":"Sehlke G.Hayes D.F.Stevens D.K.","id":536593,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Soong, D.T.","contributorId":85430,"corporation":false,"usgs":true,"family":"Soong","given":"D.T.","email":"","affiliations":[],"preferred":false,"id":409000,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Halfar, T.M.","contributorId":9729,"corporation":false,"usgs":true,"family":"Halfar","given":"T.M.","email":"","affiliations":[],"preferred":false,"id":408997,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jupin, M.A.","contributorId":54479,"corporation":false,"usgs":true,"family":"Jupin","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":408998,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wobig, L.A.","contributorId":56939,"corporation":false,"usgs":true,"family":"Wobig","given":"L.A.","affiliations":[],"preferred":false,"id":408999,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70026342,"text":"70026342 - 2004 - An intensity scale for riverine flooding","interactions":[],"lastModifiedDate":"2012-03-12T17:20:24","indexId":"70026342","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"An intensity scale for riverine flooding","docAbstract":"Recent advances in the availability and accuracy of multi-dimensional flow models, the advent of precise elevation data for floodplains (LIDAR), and geographical GIS allow the creation of hazard maps that more correctly reflect the varying levels of flood-damage risk across a floodplain when inundatecby floodwaters. Using intensity scales for wind damages, an equivalent water-damage flow intensity scale has been developed that ranges from 1 (minimal effects) to 10 (major damages to most structures). This flow intensity scale, FIS, is portrayed on a map as color-coded areas of increasing flow intensity. This should prove to be a valuable tool to assess relative risk to people and property in known flood-hazard areas.","largerWorkTitle":"Proceedings of the 2004 World Water and Environmetal Resources Congress: Critical Transitions in Water and Environmetal Resources Management","conferenceTitle":"2004 World Water and Environmental Resources Congress: Critical Transitions in Water and Environmental Resources Management","conferenceDate":"27 June 2004 through 1 July 2004","conferenceLocation":"Salt Lake City, UT","language":"English","isbn":"0784407371","usgsCitation":"Fulford, J., 2004, An intensity scale for riverine flooding, in Proceedings of the 2004 World Water and Environmetal Resources Congress: Critical Transitions in Water and Environmetal Resources Management, Salt Lake City, UT, 27 June 2004 through 1 July 2004, p. 2008-2016.","startPage":"2008","endPage":"2016","numberOfPages":"9","costCenters":[],"links":[{"id":234437,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ea82e4b0c8380cd488f2","contributors":{"editors":[{"text":"Sehlke G.Hayes D.F.Stevens D.K.","contributorId":128420,"corporation":true,"usgs":false,"organization":"Sehlke G.Hayes D.F.Stevens D.K.","id":536596,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Fulford, J.M.","contributorId":27473,"corporation":false,"usgs":true,"family":"Fulford","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":409085,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70178206,"text":"70178206 - 2004 - Concentrations of arsenic, cadmium, copper, lead, selenium, and zinc in fish from the Mississippi River Basin, 1995","interactions":[],"lastModifiedDate":"2016-11-07T13:26:58","indexId":"70178206","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1552,"text":"Environmental Monitoring and Assessment","onlineIssn":"1573-2959","printIssn":"0167-6369","active":true,"publicationSubtype":{"id":10}},"title":"Concentrations of arsenic, cadmium, copper, lead, selenium, and zinc in fish from the Mississippi River Basin, 1995","docAbstract":"

Fish were collected in late 1995 from 34 National Contaminant Biomonitoring Program (NCBP) stations and 12 National Water Quality Assessment Program (NAWQA) stations in the Mississippi River basin (MRB), and in late 1996 from a reference site in West Virginia. The NCBP sites represented key points (dams, tributaries, etc.) in the largest rivers of the MRB. The NAWQA sites were typically on smaller rivers and were selected to represent dominant land uses in their watersheds. The West Virginia site, which is in an Eastern U.S. watershed adjacent to the MRB, was selected to document elemental concentrations in fish used for other aspects of a larger study and to provide additional contemporaneous data on background elemental concentrations. At each site four samples, each comprising (nominally) 10 adult common carp (Cyprinus carpio, `carp') or black bass (Micropterus spp., `bass') of the same sex, were collected. The whole fish were composited by station, species, and gender for analysis of arsenic (As), lead (Pb), and selenium (Se) by atomic absorption spectroscopy and for cadmium (Cd), copper (Cu), and zinc (Zn) by inductively-coupled plasma emission spectroscopy. Concentrations of most of the elements examined were lower in both carpand bass from the reference site, a small impoundment located in a rural area, than from the NCBP and NAWQA sites on rivers and larger impoundments. In contrast, there were few overall differences between NCBP sites NAWQA sites. The 1995 results generally confirmed the continued weathering and re-distribution of these elemental contaminants in the MRB; concentrations declined or were unchanged from 1984–1986 to 1995 at most NCBP sites, thus continuing two-decade trends. Exceptions were Se at Station 77 (Arkansas R. at John Martin Reservoir, CO), where concentrations have been elevated historically and increased slightly (to 3.8–4.7 μg g-1 in bass and carp); and Pb, Cd, and Zn at Station 67 (Allegheny R. at Natrona, PA), where levels of these metals were high in the past and increased from 1986 to 1995.

","language":"English","publisher":"Springer","doi":"10.1023/B:EMAS.0000003594.64248.0a","usgsCitation":"Schmitt, C.J., 2004, Concentrations of arsenic, cadmium, copper, lead, selenium, and zinc in fish from the Mississippi River Basin, 1995: Environmental Monitoring and Assessment, v. 90, no. 1, p. 289-321, https://doi.org/10.1023/B:EMAS.0000003594.64248.0a.","productDescription":"33 p.","startPage":"289","endPage":"321","costCenters":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"links":[{"id":330842,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"90","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5821a0dee4b02f1a881de97a","contributors":{"authors":[{"text":"Schmitt, Christopher J. 0000-0001-6804-2360 cjschmitt@usgs.gov","orcid":"https://orcid.org/0000-0001-6804-2360","contributorId":491,"corporation":false,"usgs":true,"family":"Schmitt","given":"Christopher","email":"cjschmitt@usgs.gov","middleInitial":"J.","affiliations":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"preferred":true,"id":653243,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70185286,"text":"70185286 - 2004 - Spatial variation in shorebird nest success: Implications for inference","interactions":[],"lastModifiedDate":"2017-03-17T15:09:06","indexId":"70185286","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3704,"text":"Wader Study Group Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Spatial variation in shorebird nest success: Implications for inference","docAbstract":"

Estimates of nest success are widely applied in order to evaluate a multitude of theoretical and practical issues. Frequently, however, researchers fail to limit their inferences to the appropriate spatial scale. We evaluated small-scale variation in nest success of Western Sandpipers Calidris mauri during a four-year study on the Yukon-Kuskokwim Delta in western Alaska. We use these data to demonstrate that small-scale variation in nest success can significantly alter a researcher's interpretation of the factors affecting that reproductive parameter. In the absence of a statistically valid sampling design, researchers must be very careful about making inferences for areas beyond their actual study site. Properly designed studies allow for broader inferential power, but the logistical and financial hurdles involved in designing and implementing such a study are daunting. Metareplication can enhance one's confidence in the interpretation of local results, but should not be seen as a substitute for well-designed sampling schemes implemented across broad geographic scales.

","language":"English","publisher":"Wader Study Group","usgsCitation":"McCaffery, B.J., and Ruthrauff, D.R., 2004, Spatial variation in shorebird nest success: Implications for inference: Wader Study Group Bulletin, v. 103, p. 67-70.","productDescription":"4 p.","startPage":"67","endPage":"70","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":337826,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":337825,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://www.waderstudygroup.org/publications/bulletin/bulletin-vol-volume-106-and-earlier/","text":"Journal's Website"}],"country":"United States","state":"Alaska","otherGeospatial":"Yukon-Kuskokwim Delta","volume":"103","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58ccf59de4b0849ce97f0ce4","contributors":{"authors":[{"text":"McCaffery, Brian J.","contributorId":37617,"corporation":false,"usgs":true,"family":"McCaffery","given":"Brian","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":685025,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ruthrauff, Daniel R. 0000-0003-1355-9156 druthrauff@usgs.gov","orcid":"https://orcid.org/0000-0003-1355-9156","contributorId":4181,"corporation":false,"usgs":true,"family":"Ruthrauff","given":"Daniel","email":"druthrauff@usgs.gov","middleInitial":"R.","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":685026,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70182048,"text":"70182048 - 2004 - Winter philopatry of harlequin ducks in Prince William Sound, Alaska","interactions":[],"lastModifiedDate":"2017-02-15T14:06:17","indexId":"70182048","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3551,"text":"The Condor","active":true,"publicationSubtype":{"id":10}},"title":"Winter philopatry of harlequin ducks in Prince William Sound, Alaska","docAbstract":"

We used capture-mark-recapture data to assess winter philopatry by Harlequin Ducks (Histrionicus histrionicus) in Prince William Sound, Alaska, during winters 1995–1997 and 2000–2001. Philopatry was quantified using homing rates, which were estimated as the proportion of birds recaptured at their original site out of all recaptured birds. Between-year homing rates of 0.95 (95% CI: 0.87–1.00) and 1.00 (0.92–1.00) were estimated for females and males, respectively, at three locations on Montague Island. Similar homing rates were measured in western Prince William Sound, where estimates were 0.92 (0.80–0.98) for females and 0.96 (0.79–1.00) for males, with a scale of detected movements for all recapture birds ranging from 3–52 km. Our results indicate that wintering aggregations may be demographically independent at a much finer spatial scale than genetic data indicate, and that conservation efforts should recognize this degree of demographic separation among population segments.

","language":"English","publisher":"Cooper Ornithological Society","doi":"10.1650/7504","usgsCitation":"Iverson, S.A., Esler, D., and Rizzolo, D., 2004, Winter philopatry of harlequin ducks in Prince William Sound, Alaska: The Condor, v. 106, no. 3, p. 711-715, https://doi.org/10.1650/7504.","productDescription":"5 p.","startPage":"711","endPage":"715","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"links":[{"id":478231,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1650/7504","text":"Publisher Index Page"},{"id":335589,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Prince William Sound","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -148.3154296875,\n 60.031929699115615\n ],\n [\n -146.8157958984375,\n 60.031929699115615\n ],\n [\n -146.8157958984375,\n 60.60854176060904\n ],\n [\n -148.3154296875,\n 60.60854176060904\n ],\n [\n -148.3154296875,\n 60.031929699115615\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"106","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58a576cfe4b057081a24edaf","contributors":{"authors":[{"text":"Iverson, Samuel A.","contributorId":52308,"corporation":false,"usgs":false,"family":"Iverson","given":"Samuel","email":"","middleInitial":"A.","affiliations":[{"id":12437,"text":"Simon Fraser University, Centre for Wildlife Ecology","active":true,"usgs":false}],"preferred":false,"id":669385,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Esler, Daniel 0000-0001-5501-4555 desler@usgs.gov","orcid":"https://orcid.org/0000-0001-5501-4555","contributorId":5465,"corporation":false,"usgs":true,"family":"Esler","given":"Daniel","email":"desler@usgs.gov","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true},{"id":12437,"text":"Simon Fraser University, Centre for Wildlife Ecology","active":true,"usgs":false}],"preferred":true,"id":669386,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rizzolo, Daniel drizzolo@usgs.gov","contributorId":5631,"corporation":false,"usgs":true,"family":"Rizzolo","given":"Daniel","email":"drizzolo@usgs.gov","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":669387,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70026494,"text":"70026494 - 2004 - VEMAP Phase 2 bioclimatic database. I. Gridded historical (20th century) climate for modeling ecosystem dynamics across the conterminous USA","interactions":[],"lastModifiedDate":"2021-07-23T15:54:55.988373","indexId":"70026494","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1249,"text":"Climate Research","active":true,"publicationSubtype":{"id":10}},"title":"VEMAP Phase 2 bioclimatic database. I. Gridded historical (20th century) climate for modeling ecosystem dynamics across the conterminous USA","docAbstract":"

Analysis and simulation of biospheric responses to historical forcing require surface climate data that capture those aspects of climate that control ecological processes, including key spatial gradients and modes of temporal variability. We developed a multivariate, gridded historical climate dataset for the conterminous USA as a common input database for the Vegetation/Ecosystem Modeling and Analysis Project (VEMAP), a biogeochemical and dynamic vegetation model intercomparison. The dataset covers the period 1895—1993 on a 0.5° latitude/longitude grid. Climate is represented at both monthly and daily timesteps. Variables are: precipitation, mininimum and maximum temperature, total incident solar radiation, daylight-period irradiance, vapor pressure, and daylight-period relative humidity. The dataset was derived from US Historical Climate Network (HCN), cooperative network, and snowpack telemetry (SNOTEL) monthly precipitation and mean minimum and maximum temperature station data. We employed techniques that rely on geostatistical and physical relationships to create the temporally and spatially complete dataset. We developed a local kriging prediction model to infill discontinuous and limited-length station records based on spatial autocorrelation structure of climate anomalies. A spatial interpolation model (PRISM) that accounts for physiographic controls was used to grid the infilled monthly station data. We implemented a stochastic weather generator (modified WGEN) to disaggregate the gridded monthly series to dailies. Radiation and humidity variables were estimated from the dailies using a physically-based empirical surface climate model (MTCLIM3). Derived datasets include a 100 yr model spin-up climate and a historical Palmer Drought Severity Index (PDSI) dataset. The VEMAP dataset exhibits statistically significant trends in temperature, precipitation, solar radiation, vapor pressure, and PDSI for US National Assessment regions. The historical climate and companion datasets are available online at data archive centers. 

","language":"English","publisher":"Inter-Research Science Publisher","doi":"10.3354/cr027151","usgsCitation":"Kittel, T., Rosenbloom, N., Royle, J., Daly, C., Gibson, W., Fisher, H., Thornton, P., Yates, D., Aulenbach, S., Kaufman, C., McKeown, R., Bachelet, D., Schimel, D.S., Neilson, R., Lenihan, J., Drapek, R., Ojima, D., Parton, W., Melillo, J.M., Kicklighter, D., Tian, H., McGuire, A., Sykes, M., Smith, B., Cowling, S., Hickler, T., Prentice, I.C., Running, S., Hibbard, K., Post, W., King, A., Smith, T., Rizzo, B., and Woodward, F., 2004, VEMAP Phase 2 bioclimatic database. I. 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We provide recommendations on the best practices for mist netting for the purposes of monitoring population parameters such as abundance and demography. Studies should be carefully thought out before nets are set up, to ensure that sampling design and estimated sample size will allow study objectives to be met. Station location, number of nets, type of nets, net placement, and schedule of operation should be determined by the goals of the particular project, and we provide guidelines for typical mist-net studies. In the absence of study-specific requirements for novel protocols, commonly used protocols should be used to enable comparison of results among studies. Regardless of the equipment, net layout, or netting schedule selected, it is important for all studies that operations be strictly standardized, and a well-written operation protocol will help in attaining this goal. We provide recommendations for data to be collected on captured birds, and emphasize the need for good training of project personnel

","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Monitoring bird populations using mist nets (Studies in Avian Biology no. 29)","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"Cooper Ornithological Society","isbn":"0943610613","usgsCitation":"Ralph, C.J., Dunn, E.H., Peach, W.J., and Handel, C.M., 2004, Recommendations for the use of mist nets for inventory and monitoring of bird populations, chap. of Monitoring bird populations using mist nets (Studies in Avian Biology no. 29): Studies in Avian Biology, v. 29, p. 187-196.","productDescription":"10 p.","startPage":"187","endPage":"196","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":337520,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":337519,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://www.americanornithology.org/content/studies-avian-biology","text":"Studies in Avian Biology Homepage"}],"volume":"29","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58c9012ae4b0849ce97abd10","contributors":{"editors":[{"text":"Ralph, C. John","contributorId":71284,"corporation":false,"usgs":true,"family":"Ralph","given":"C.","email":"","middleInitial":"John","affiliations":[],"preferred":false,"id":684276,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Dunn, Erica H.","contributorId":35841,"corporation":false,"usgs":false,"family":"Dunn","given":"Erica","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":684277,"contributorType":{"id":2,"text":"Editors"},"rank":2}],"authors":[{"text":"Ralph, C. John","contributorId":71284,"corporation":false,"usgs":true,"family":"Ralph","given":"C.","email":"","middleInitial":"John","affiliations":[],"preferred":false,"id":684255,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dunn, Erica H.","contributorId":35841,"corporation":false,"usgs":false,"family":"Dunn","given":"Erica","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":684256,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Peach, Will J.","contributorId":189255,"corporation":false,"usgs":false,"family":"Peach","given":"Will","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":684257,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Handel, Colleen M. 0000-0002-0267-7408 cmhandel@usgs.gov","orcid":"https://orcid.org/0000-0002-0267-7408","contributorId":3067,"corporation":false,"usgs":true,"family":"Handel","given":"Colleen","email":"cmhandel@usgs.gov","middleInitial":"M.","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":684258,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70179817,"text":"70179817 - 2004 - Juvenile and adult fall Chinook and chum salmon habitat studies below Bonneville Dam on the Columbia River. Annual report 2002-2003","interactions":[],"lastModifiedDate":"2017-01-18T14:07:13","indexId":"70179817","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":4,"text":"Other Government Series"},"title":" Juvenile and adult fall Chinook and chum salmon habitat studies below Bonneville Dam on the Columbia River. Annual report 2002-2003","docAbstract":"

We investigated spatial and temporal changes in subyearling fall Chinook salmon rearing habitat and areas dewatered below Bonneville Dam on the Columbia River. We used two-dimensional hydrodynamic modeling to predict water velocity and depth data. By combining two-dimensional hydrodynamic modeling with a predictive model of subyearling rearing presence, we were able to illustrate spatiotemporal changes in subyearling rearing areas, areas dewatered by flow reductions, and percentage of dewatered locations that were initially subyearling rearing areas. By using a geographic information system, we located areas of persistent subyearling rearing and areas frequently dewatered at 1-h change intervals from 1 April through 31 May, 2003. We validated predicted water velocities and surface elevations using empirically collected water velocities and surface elevations. We beach seined to collect subyearlings at random locations within the study area to validate predictions of subyearling presence.

","language":"English","publisher":"Bonneville Power Administration ","usgsCitation":"Tiffan, K., Garland, R., Rondorf, D., and Skalicky, J., 2004, Juvenile and adult fall Chinook and chum salmon habitat studies below Bonneville Dam on the Columbia River. Annual report 2002-2003, iv., 56 p. .","productDescription":"iv., 56 p. ","costCenters":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"links":[{"id":333364,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Oregon, Washington","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -122.00403213500977,\n 45.63132556313632\n ],\n [\n -122.03733444213866,\n 45.62424286782871\n ],\n [\n -122.0493507385254,\n 45.61403741135093\n ],\n [\n -122.09896087646484,\n 45.600227072468094\n ],\n [\n -122.1247100830078,\n 45.59686404046776\n ],\n [\n -122.14754104614258,\n 45.591338621743695\n ],\n [\n -122.14839935302733,\n 45.572836521464495\n ],\n [\n -122.09054946899413,\n 45.58256890575482\n ],\n [\n -122.03596115112303,\n 45.60082759268619\n ],\n [\n -121.97811126708983,\n 45.62088127556128\n ],\n [\n -121.96609497070312,\n 45.627004024977886\n ],\n [\n -121.97038650512697,\n 45.634926590414786\n ],\n [\n -122.00403213500977,\n 45.63132556313632\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58808d73e4b01dfadfff1567","contributors":{"authors":[{"text":"Tiffan, K.F.","contributorId":19327,"corporation":false,"usgs":true,"family":"Tiffan","given":"K.F.","email":"","affiliations":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"preferred":false,"id":658814,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Garland, R.","contributorId":178422,"corporation":false,"usgs":false,"family":"Garland","given":"R.","email":"","affiliations":[],"preferred":false,"id":658815,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rondorf, D.","contributorId":178346,"corporation":false,"usgs":false,"family":"Rondorf","given":"D.","email":"","affiliations":[],"preferred":false,"id":658816,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Skalicky, J.","contributorId":178425,"corporation":false,"usgs":false,"family":"Skalicky","given":"J.","email":"","affiliations":[],"preferred":false,"id":658817,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70185649,"text":"70185649 - 2004 - Object-based inversion of crosswell radar tomography data to monitor vegetable oil injection experiments","interactions":[],"lastModifiedDate":"2019-10-15T16:06:27","indexId":"70185649","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3928,"text":"Journal of Environmental & Engineering Geophysics","printIssn":"1083-1363","active":true,"publicationSubtype":{"id":10}},"title":"Object-based inversion of crosswell radar tomography data to monitor vegetable oil injection experiments","docAbstract":"

Crosswell radar methods can be used to dynamically image ground-water flow and mass transport associated with tracer tests, hydraulic tests, and natural physical processes, for improved characterization of preferential flow paths and complex aquifer heterogeneity. Unfortunately, because the raypath coverage of the interwell region is limited by the borehole geometry, the tomographic inverse problem is typically underdetermined, and tomograms may contain artifacts such as spurious blurring or streaking that confuse interpretation.

We implement object-based inversion (using a constrained, non-linear, least-squares algorithm) to improve results from pixel-based inversion approaches that utilize regularization criteria, such as damping or smoothness. Our approach requires pre- and post-injection travel-time data. Parameterization of the image plane comprises a small number of objects rather than a large number of pixels, resulting in an overdetermined problem that reduces the need for prior information. The nature and geometry of the objects are based on hydrologic insight into aquifer characteristics, the nature of the experiment, and the planned use of the geophysical results.

The object-based inversion is demonstrated using synthetic and crosswell radar field data acquired during vegetable-oil injection experiments at a site in Fridley, Minnesota. The region where oil has displaced ground water is discretized as a stack of rectangles of variable horizontal extents. The inversion provides the geometry of the affected region and an estimate of the radar slowness change for each rectangle. Applying petrophysical models to these results and porosity from neutron logs, we estimate the vegetable-oil emulsion saturation in various layers.

Using synthetic- and field-data examples, object-based inversion is shown to be an effective strategy for inverting crosswell radar tomography data acquired to monitor the emplacement of vegetable-oil emulsions. A principal advantage of object-based inversion is that it yields images that hydrologists and engineers can easily interpret and use for model calibration.

","language":"English","publisher":"Environmental & Engineering Geophysical Society","doi":"10.4133/JEEG9.2.63","usgsCitation":"Lane, J.W., Day-Lewis, F.D., Versteeg, R.J., and Casey, C.C., 2004, Object-based inversion of crosswell radar tomography data to monitor vegetable oil injection experiments: Journal of Environmental & Engineering Geophysics, v. 9, no. 2, p. 63-77, https://doi.org/10.4133/JEEG9.2.63.","productDescription":"15 p. ","startPage":"63","endPage":"77","costCenters":[{"id":493,"text":"Office of Ground Water","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":338353,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"9","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58da251be4b0543bf7fda808","contributors":{"authors":[{"text":"Lane, John W. Jr. jwlane@usgs.gov","contributorId":1738,"corporation":false,"usgs":true,"family":"Lane","given":"John","suffix":"Jr.","email":"jwlane@usgs.gov","middleInitial":"W.","affiliations":[{"id":486,"text":"OGW Branch of Geophysics","active":true,"usgs":true}],"preferred":false,"id":686224,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Day-Lewis, Frederick D. 0000-0003-3526-886X daylewis@usgs.gov","orcid":"https://orcid.org/0000-0003-3526-886X","contributorId":1672,"corporation":false,"usgs":true,"family":"Day-Lewis","given":"Frederick","email":"daylewis@usgs.gov","middleInitial":"D.","affiliations":[{"id":486,"text":"OGW Branch of Geophysics","active":true,"usgs":true},{"id":493,"text":"Office of Ground Water","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":686225,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Versteeg, Roelof J.","contributorId":73501,"corporation":false,"usgs":true,"family":"Versteeg","given":"Roelof","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":686226,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Casey, Clifton C.","contributorId":15140,"corporation":false,"usgs":true,"family":"Casey","given":"Clifton","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":686227,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70170835,"text":"70170835 - 2004 - Isolation and characterization of a rhabdovirus from starry flounder (Platichthys stellatus) collected from the northern portion of Puget Sound, Washington, USA","interactions":[],"lastModifiedDate":"2016-05-03T15:29:53","indexId":"70170835","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2301,"text":"Journal of General Virology","active":true,"publicationSubtype":{"id":10}},"title":"Isolation and characterization of a rhabdovirus from starry flounder (Platichthys stellatus) collected from the northern portion of Puget Sound, Washington, USA","docAbstract":"

The initial characterization of a rhabdovirus isolated from a single, asymptomatic starry flounder (Platichthys stellatus) collected during a viral survey of marine fishes from the northern portion of Puget Sound, Washington, USA, is reported. Virions were bullet-shaped and approximately 100 nm long and 50 nm wide, contained a lipid envelope, remained stable for at least 14 days at temperatures ranging from -80 to 5 degrees C and grew optimally at 15 degrees C in cultures of epithelioma papulosum cyprini (EPC) cells. The cytopathic effect on EPC cell monolayers was characterized by raised foci containing rounded masses of cells. Pyknotic and dark-staining nuclei that also showed signs of karyorrhexis were observed following haematoxylin and eosin, May-Grunwald Giemsa and acridine orange staining. PAGE of the structural proteins and PCR assays using primers specific for other known fish rhabdoviruses, including Infectious hematopoietic necrosis virus, Viral hemorrhagic septicemia virus, Spring viremia of carp virus, and Hirame rhabdovirus, indicated that the new virus, tentatively termed starry flounder rhabdovirus (SFRV), was previously undescribed in marine fishes from this region. In addition, sequence analysis of 2678 nt of the amino portion of the viral polymerase gene indicated that SFRV was genetically distinct from other members of the family Rhabdoviridae for which sequence data are available. Detection of this virus during a limited viral survey of wild fishes emphasizes the void of knowledge regarding the diversity of viruses that naturally infect marine fish species in the North Pacific Ocean.

","language":"English","publisher":"Microbiology Society","doi":"10.1099/vir.0.19459-0","usgsCitation":"Mork, C., Hershberger, P., Kocan, R., Batts, W.N., and Winton, J., 2004, Isolation and characterization of a rhabdovirus from starry flounder (Platichthys stellatus) collected from the northern portion of Puget Sound, Washington, USA: Journal of General Virology, v. 85, p. 495-505, https://doi.org/10.1099/vir.0.19459-0.","productDescription":"11 p.","startPage":"495","endPage":"505","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"links":[{"id":478292,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1099/vir.0.19459-0","text":"Publisher Index Page"},{"id":320930,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"85","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5729cbb6e4b0b13d3919a393","contributors":{"authors":[{"text":"Mork, Christina","contributorId":169136,"corporation":false,"usgs":false,"family":"Mork","given":"Christina","email":"","affiliations":[],"preferred":false,"id":628613,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hershberger, Paul K. phershberger@usgs.gov","contributorId":1945,"corporation":false,"usgs":true,"family":"Hershberger","given":"Paul K.","email":"phershberger@usgs.gov","affiliations":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"preferred":false,"id":628614,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kocan, Richard","contributorId":58917,"corporation":false,"usgs":true,"family":"Kocan","given":"Richard","affiliations":[],"preferred":false,"id":628615,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Batts, William N. 0000-0002-6469-9004 bbatts@usgs.gov","orcid":"https://orcid.org/0000-0002-6469-9004","contributorId":3815,"corporation":false,"usgs":true,"family":"Batts","given":"William","email":"bbatts@usgs.gov","middleInitial":"N.","affiliations":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"preferred":true,"id":628616,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Winton, James R. jwinton@usgs.gov","contributorId":150220,"corporation":false,"usgs":true,"family":"Winton","given":"James R.","email":"jwinton@usgs.gov","affiliations":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"preferred":false,"id":628617,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70184480,"text":"70184480 - 2004 - Transport and time lag of chlorofluorocarbon gases in the unsaturated zone, Rabis Creek, Denmark","interactions":[],"lastModifiedDate":"2018-11-14T10:22:05","indexId":"70184480","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3674,"text":"Vadose Zone Journal","active":true,"publicationSubtype":{"id":10}},"title":"Transport and time lag of chlorofluorocarbon gases in the unsaturated zone, Rabis Creek, Denmark","docAbstract":"

Transport of chlorofluorocarbon (CFC) gases through the unsaturated zone to the water table is affected by gas diffusion, air–water exchange (solubility), sorption to the soil matrix, advective–dispersive transport in the water phase, and, in some cases, anaerobic degradation. In deep unsaturated zones, this may lead to a time lag between entry of gases at the land surface and recharge to groundwater. Data from a Danish field site were used to investigate how time lag is affected by variations in water content and to explore the use of simple analytical solutions to calculate time lag. Numerical simulations demonstrate that either degradation or sorption of CFC-11 takes place, whereas CFC-12 and CFC-113 are nonreactive. Water flow did not appreciably affect transport. An analytical solution for the period with a linear increase in atmospheric CFC concentrations (approximately early 1970s to early 1990s) was used to calculate CFC profiles and time lags. We compared the analytical results with numerical simulations. The time lags in the 15-m-deep unsaturated zone increase from 4.2 to between 5.2 and 6.1 yr and from 3.4 to 3.9 yr for CFC-11 and CFC-12, respectively, when simulations change from use of an exponential to a linear increase in atmospheric concentrations. The CFC concentrations at the water table before the early 1990s can be estimated by displacing the atmospheric input function by these fixed time lags. A sensitivity study demonstrates conditions under which a time lag in the unsaturated zone becomes important. The most critical parameter is the tortuosity coefficient. The analytical approach is valid for the low range of tortuosity coefficients (τ = 0.1–0.4) and unsaturated zones greater than approximately 20 m in thickness. In these cases the CFC distribution may still be from either the exponential or linear phase. In other cases, the use of numerical models, as described in our work and elsewhere, is an option.

","language":"English","publisher":"Soil Science Society","doi":"10.2136/vzj2004.1249","usgsCitation":"Engesgaard, P., Højberg, A., Hinsby, K., Jensen, K., Laier, T., Larsen, F., Busenberg, E., and Plummer, N., 2004, Transport and time lag of chlorofluorocarbon gases in the unsaturated zone, Rabis Creek, Denmark: Vadose Zone Journal, v. 3, no. 4, p. 1249-1261, https://doi.org/10.2136/vzj2004.1249.","productDescription":"13 p. ","startPage":"1249","endPage":"1261","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":337285,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Denmark","otherGeospatial":"Rabis Creek","volume":"3","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58c3c945e4b0f37a93ee9b5d","contributors":{"authors":[{"text":"Engesgaard, Peter","contributorId":49044,"corporation":false,"usgs":true,"family":"Engesgaard","given":"Peter","affiliations":[],"preferred":false,"id":681650,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Højberg, Anker L.","contributorId":187776,"corporation":false,"usgs":false,"family":"Højberg","given":"Anker L.","affiliations":[],"preferred":false,"id":681651,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hinsby, Klaus","contributorId":187777,"corporation":false,"usgs":false,"family":"Hinsby","given":"Klaus","affiliations":[],"preferred":false,"id":681652,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jensen, Karsten H.","contributorId":187778,"corporation":false,"usgs":false,"family":"Jensen","given":"Karsten H.","affiliations":[],"preferred":false,"id":681653,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Laier, Troels","contributorId":187779,"corporation":false,"usgs":false,"family":"Laier","given":"Troels","email":"","affiliations":[],"preferred":false,"id":681654,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Larsen, Flemming","contributorId":187780,"corporation":false,"usgs":false,"family":"Larsen","given":"Flemming","email":"","affiliations":[],"preferred":false,"id":681655,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Busenberg, Eurybiades ebusenbe@usgs.gov","contributorId":2271,"corporation":false,"usgs":true,"family":"Busenberg","given":"Eurybiades","email":"ebusenbe@usgs.gov","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":681656,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Plummer, Niel 0000-0002-4020-1013 nplummer@usgs.gov","orcid":"https://orcid.org/0000-0002-4020-1013","contributorId":190100,"corporation":false,"usgs":true,"family":"Plummer","given":"Niel","email":"nplummer@usgs.gov","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":681657,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70184570,"text":"70184570 - 2004 - Importance of clay size minerals for Fe(III) respiration in a petroleum-contaminated aquifer","interactions":[],"lastModifiedDate":"2017-03-10T12:14:00","indexId":"70184570","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1751,"text":"Geobiology","active":true,"publicationSubtype":{"id":10}},"title":"Importance of clay size minerals for Fe(III) respiration in a petroleum-contaminated aquifer","docAbstract":"

The availability of Fe(III)-bearing minerals for dissimilatory Fe(III) reduction was evaluated in sediments from a petroleum-contaminated sandy aquifer near Bemidji, Minnesota (USA). First, the sediments from a contaminated area of the aquifer, in which Fe(III) reduction was the predominant terminal electron accepting process, were compared with sediments from a nearby, uncontaminated site. Data from 0.5 m HCl extraction of different size fractions of the sediments revealed that the clay size fraction contributed a significant portion of the ‘bio-available’ Fe(III) in the background sediment and was the most depleted in ‘bio-available’ Fe(III) in the iron-reducing sediment. Analytical transmission electron microscopy (TEM) revealed the disappearance of thermodynamically unstable Fe(III) and Mn(IV) hydroxides (ferrihydrite and Fe vernadite), as well as a decrease in the abundance of goethite and lepidocrocite in the clay size fraction from the contaminated sediment. TEM observations and X-ray diffraction examination did not provide strong evidence of Fe(III)-reduction-related changes within another potential source of ‘bio-available’ Fe(III) in the clay size fraction – ferruginous phyllosilicates. However, further testing in the laboratory with sediments from the methanogenic portion of the aquifer that were depleted in microbially reducible Fe(III) revealed the potential for microbial reduction of Fe(III) associated with phyllosilicates. Addition of a clay size fraction from the uncontaminated sediment, as well as Fe(III)-coated kaolin and ferruginous nontronite SWa-1, as sources of poorly crystalline Fe(III) hydroxides and structural iron of phyllosilicates respectively, lowered steady-state hydrogen concentrations consistent with a stimulation of Fe(III) reduction in laboratory incubations of methanogenic sediments. There was no change in hydrogen concentration when non-ferruginous clays or no minerals were added. This demonstrated that Fe(III)-bearing clay size minerals were essential for microbial Fe(III) reduction and suggested that both potential sources of ‘bio-available’ Fe(III) in the clay size fraction, poorly crystalline Fe(III) hydroxides and structural Fe(III) of phyllosilicates, were important sources of electron acceptor for indigenous iron-reducing microorganisms in this aquifer.

","language":"English","publisher":"Wiley","doi":"10.1111/j.1472-4677.2004.00018.x","usgsCitation":"Shelobolina, E.S., Anderson, R.T., Vodyanitskii, Y.N., Sivtsov, A.V., Yuretich, R., and Lovely, D.R., 2004, Importance of clay size minerals for Fe(III) respiration in a petroleum-contaminated aquifer: Geobiology, v. 2, no. 1, p. 67-76, https://doi.org/10.1111/j.1472-4677.2004.00018.x.","productDescription":"10 p. ","startPage":"67","endPage":"76","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":478235,"rank":0,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://onlinelibrary.wiley.com/doi/10.1111/j.1472-4677.2004.00018.x/full","text":"External Repository"},{"id":337340,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"2","issue":"1","noUsgsAuthors":false,"publicationDate":"2004-03-04","publicationStatus":"PW","scienceBaseUri":"58c3c943e4b0f37a93ee9b3f","contributors":{"authors":[{"text":"Shelobolina, Evgenya S.","contributorId":187992,"corporation":false,"usgs":false,"family":"Shelobolina","given":"Evgenya","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":682057,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Anderson, Robert T.","contributorId":178193,"corporation":false,"usgs":true,"family":"Anderson","given":"Robert","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":682058,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Vodyanitskii, Yury N.","contributorId":187993,"corporation":false,"usgs":false,"family":"Vodyanitskii","given":"Yury","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":682059,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sivtsov, Anatolii V.","contributorId":187994,"corporation":false,"usgs":false,"family":"Sivtsov","given":"Anatolii","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":682060,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Yuretich, Richard","contributorId":187995,"corporation":false,"usgs":false,"family":"Yuretich","given":"Richard","email":"","affiliations":[],"preferred":false,"id":682061,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Lovely, Derek R.","contributorId":184232,"corporation":false,"usgs":false,"family":"Lovely","given":"Derek","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":682062,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70180875,"text":"70180875 - 2004 - An animal location-based habitat suitability model for bighorn sheep and wild horses in Bighorn Canyon National Recreation Area and the Pryor Mountain Wild Horse Range, Montana, and Wyoming","interactions":[],"lastModifiedDate":"2017-02-06T11:11:35","indexId":"70180875","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":18,"text":"Report"},"title":"An animal location-based habitat suitability model for bighorn sheep and wild horses in Bighorn Canyon National Recreation Area and the Pryor Mountain Wild Horse Range, Montana, and Wyoming","docAbstract":"

The purpose of this habitat suitability model is to provide a tool that will help managers and researchers better manage bighorn sheep and wild horses in the Bighorn Canyon National Recreation Area (BICA) and Pryor Mountain Wild Horse Range (PMWHR). A concern in the management of the Pryor Mountain wild horse population is whether or not the wild horses compete with bighorn sheep for available forage or available space. Two studies have been conducted that have shown no obvious, convincing competition between the two species. A study of diets and habitat-use of both species revealed substantial diet overlap only during some seasons, but there were considerable spatial and habitat separations between wild horses and bighorns during all seasons (Kissell and others, 1996). This empirical data was then used in a modeling exercise that predicted that neither the current (about 160 horses at the time of the analysis) nor larger numbers of wild horses on the area (e.g., about 200 horses) would result in reduced numbers or condition of bighorn sheep (Coughenour 1999). But competition is a very complex biological process to document. Bighorns might have already been spatially avoiding wild horses when these studies were conducted.

A second concern for managers is that earlier studies suggest both species are not using many areas of the range that appear to be suitable (Gudorf and others, 1996; Kissell and others, 1996). A primary goal for the management of both species is to increase their numbers for purposes of genetic conservation and viability. The bighorn sheep population declined during the mid-1990’s from a peak of about 211 animals to ~ 100 animals at present. Absolute minimum goals for genetic viability in the bighorn sheep herd (genetic effective population size of N >50) suggest at least 150 animals should be present, while studies of persistence suggest populations of 250+ are e more likely to recover rapidly and persist should the population experience an epizootic die-off (Singer and others, 2001). Since all bighorn sheep populations are potentially vulnerable to disease epizootics, managing for larger populations of 200–300 animals appears to increase the potential for long-term persistence (Berger, 1990; Singer and others, 2001).

Wild horses are not prone to rapid disease die-offs. However, minimum goals for genetic viability in the Pryor Mountain wild horses ( Ne > 50) require that at least 160 animals be present on the range (Singer and others, 2000). Since the Ne > 50 goal is set for the breeding of domestic animals, and since the vagaries of drought, severe winters, predation, and other stochastic events cause stress in wild animals, larger goals for Ne (e.g. Ne > 100) for wild horses are even more desirable (USDI, BLM, 1999; Gross, 2000). Expanding the area of the wild horse range is one option, but the prospects for expanding the range do not appear to be great (L. Coates-Markle, BLM, oral comm.). A second option would be to increase the amount of useable habitat for horses on the existing range. One goal of this modeling effort was to use GIS-based habitat analyses to determine the reason wild horses are not using some areas of the range, and to explore the potential for making some of these areas useable.

The National Park Service (NPS) has shown considerable interest in management actions within BICA that will increase the range, useable habitat, and population size of bighorn sheep. There has also been interest expressed by the Bureau of Land Management (BLM) and wild horse advocates to improve the useable habitat for wild horses and to possibly increase the size of the horse range.

","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Bighorn sheep habitat studies, population dynamics, and population modeling in Bighorn Canyon National Recreation Area, Wyoming and Montana, 2000-2003 (Open-File Report 2004-1337)","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","usgsCitation":"Wockner, G., Singer, F.J., and Schoenecker, K.A., 2004, An animal location-based habitat suitability model for bighorn sheep and wild horses in Bighorn Canyon National Recreation Area and the Pryor Mountain Wild Horse Range, Montana, and Wyoming, 36 p.","productDescription":"36 p.","startPage":"167","endPage":"202","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":334815,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":334814,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2004/1337/report.pdf#page=180"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58999945e4b0efcedb71a0ba","contributors":{"authors":[{"text":"Wockner, Gary","contributorId":118967,"corporation":false,"usgs":true,"family":"Wockner","given":"Gary","email":"","affiliations":[],"preferred":false,"id":662661,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Singer, Francis J.","contributorId":67026,"corporation":false,"usgs":true,"family":"Singer","given":"Francis","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":662662,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Schoenecker, Kathryn A. 0000-0001-9906-911X schoeneckerk@usgs.gov","orcid":"https://orcid.org/0000-0001-9906-911X","contributorId":2001,"corporation":false,"usgs":true,"family":"Schoenecker","given":"Kathryn","email":"schoeneckerk@usgs.gov","middleInitial":"A.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":662663,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70026315,"text":"70026315 - 2004 - Migration of dispersive GPR data","interactions":[],"lastModifiedDate":"2012-03-12T17:20:37","indexId":"70026315","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Migration of dispersive GPR data","docAbstract":"Electrical conductivity and dielectric and magnetic relaxation phenomena cause electromagnetic propagation to be dispersive in earth materials. Both velocity and attenuation may vary with frequency, depending on the frequency content of the propagating energy and the nature of the relaxation phenomena. A minor amount of velocity dispersion is associated with high attenuation. For this reason, measuring effects of velocity dispersion in ground penetrating radar (GPR) data is difficult. With a dispersive forward model, GPR responses to propagation through materials with known frequency-dependent properties have been created. These responses are used as test data for migration algorithms that have been modified to handle specific aspects of dispersive media. When either Stolt or Gazdag migration methods are modified to correct for just velocity dispersion, the results are little changed from standard migration. For nondispersive propagating wavefield data, like deep seismic, ensuring correct phase summation in a migration algorithm is more important than correctly handling amplitude. However, the results of migrating model responses to dispersive media with modified algorithms indicate that, in this case, correcting for frequency-dependent amplitude loss has a much greater effect on the result than correcting for proper phase summation. A modified migration is only effective when it includes attenuation recovery, performing deconvolution and migration simultaneously.","largerWorkTitle":"Proceedings of the Tenth International Conference Ground Penetrating Radar, GPR 2004","conferenceTitle":"Proceedings of the Tenth International Conference Ground Penetrating Radar, GPR 2004","conferenceDate":"21 June 2004 through 24 June 2004","conferenceLocation":"Delft","language":"English","isbn":"9090179593","usgsCitation":"Powers, M., and Oden, C., 2004, Migration of dispersive GPR data, in Proceedings of the Tenth International Conference Ground Penetrating Radar, GPR 2004, v. 1, Delft, 21 June 2004 through 24 June 2004, p. 333-336.","startPage":"333","endPage":"336","numberOfPages":"4","costCenters":[],"links":[{"id":233967,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5707e4b0c8380cd6d9d6","contributors":{"editors":[{"text":"Slob E.Yarovoy A.Rhebergen J.B.","contributorId":128406,"corporation":true,"usgs":false,"organization":"Slob E.Yarovoy A.Rhebergen J.B.","id":536592,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Powers, M.H.","contributorId":40352,"corporation":false,"usgs":true,"family":"Powers","given":"M.H.","email":"","affiliations":[],"preferred":false,"id":408976,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Oden, C.P.","contributorId":13413,"corporation":false,"usgs":true,"family":"Oden","given":"C.P.","email":"","affiliations":[],"preferred":false,"id":408975,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70184608,"text":"70184608 - 2004 - Constraining the inferred paleohydrologic evolution of a deep unsaturated zone in the Amargosa Desert","interactions":[],"lastModifiedDate":"2019-12-17T07:58:48","indexId":"70184608","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3674,"text":"Vadose Zone Journal","active":true,"publicationSubtype":{"id":10}},"title":"Constraining the inferred paleohydrologic evolution of a deep unsaturated zone in the Amargosa Desert","docAbstract":"

Natural flow regimes in deep unsaturated zones of arid interfluvial environments are rarely in hydraulic equilibrium with near-surface boundary conditions imposed by present-day plant–soil–atmosphere dynamics. Nevertheless, assessments of water resources and contaminant transport require realistic estimates of gas, water, and solute fluxes under past, present, and projected conditions. Multimillennial transients that are captured in current hydraulic, chemical, and isotopic profiles can be interpreted to constrain alternative scenarios of paleohydrologic evolution following climatic and vegetational shifts from pluvial to arid conditions. However, interpreting profile data with numerical models presents formidable challenges in that boundary conditions must be prescribed throughout the entire Holocene, when we have at most a few decades of actual records. Models of profile development at the Amargosa Desert Research Site include substantial uncertainties from imperfectly known initial and boundary conditions when simulating flow and solute transport over millennial timescales. We show how multiple types of profile data, including matric potentials and porewater concentrations of Cl−, δD, δ18O, can be used in multiphase heat, flow, and transport models to expose and reduce uncertainty in paleohydrologic reconstructions. Results indicate that a dramatic shift in the near-surface water balance occurred approximately 16000 yr ago, but that transitions in precipitation, temperature, and vegetation were not necessarily synchronous. The timing of the hydraulic transition imparts the largest uncertainty to model-predicted contemporary fluxes. In contrast, the uncertainties associated with initial (late Pleistocene) conditions and boundary conditions during the Holocene impart only small uncertainties to model-predicted contemporaneous fluxes.

","language":"English","publisher":"Soil Science Society of America","doi":"10.2136/vzj2004.0502","usgsCitation":"Walvoord, M.A., Stonestrom, D.A., Andraski, B.J., and Striegl, R.G., 2004, Constraining the inferred paleohydrologic evolution of a deep unsaturated zone in the Amargosa Desert: Vadose Zone Journal, v. 3, no. 2, p. 502-512, https://doi.org/10.2136/vzj2004.0502.","productDescription":"11 p. ","startPage":"502","endPage":"512","costCenters":[{"id":465,"text":"Nevada Water Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":337351,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California, Nevada","otherGeospatial":"Amargosa Desert Research Site","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -116.92474365234375,\n 36.746587336189386\n ],\n [\n -116.24496459960938,\n 36.20217441183449\n ],\n [\n -115.83160400390626,\n 36.40470491509095\n ],\n [\n -116.21475219726562,\n 36.6959520787169\n ],\n [\n -116.68167114257812,\n 36.89499795802219\n ],\n [\n -116.84234619140624,\n 36.97183825093165\n ],\n [\n -116.92474365234375,\n 36.746587336189386\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"3","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58c3c942e4b0f37a93ee9b3b","contributors":{"authors":[{"text":"Walvoord, Michelle Ann 0000-0003-4269-8366 walvoord@usgs.gov","orcid":"https://orcid.org/0000-0003-4269-8366","contributorId":147211,"corporation":false,"usgs":true,"family":"Walvoord","given":"Michelle","email":"walvoord@usgs.gov","middleInitial":"Ann","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":682217,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stonestrom, David A. 0000-0001-7883-3385 dastones@usgs.gov","orcid":"https://orcid.org/0000-0001-7883-3385","contributorId":2280,"corporation":false,"usgs":true,"family":"Stonestrom","given":"David","email":"dastones@usgs.gov","middleInitial":"A.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":682218,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Andraski, Brian J. 0000-0002-2086-0417 andraski@usgs.gov","orcid":"https://orcid.org/0000-0002-2086-0417","contributorId":168800,"corporation":false,"usgs":true,"family":"Andraski","given":"Brian","email":"andraski@usgs.gov","middleInitial":"J.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":465,"text":"Nevada Water Science Center","active":true,"usgs":true},{"id":38175,"text":"Toxics Substances Hydrology Program","active":true,"usgs":true}],"preferred":false,"id":682219,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Striegl, Robert G. 0000-0002-8251-4659 rstriegl@usgs.gov","orcid":"https://orcid.org/0000-0002-8251-4659","contributorId":1630,"corporation":false,"usgs":true,"family":"Striegl","given":"Robert","email":"rstriegl@usgs.gov","middleInitial":"G.","affiliations":[{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true},{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":false,"id":682220,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70174257,"text":"70174257 - 2004 - Specific conductance and water temperature data for San Francisco Bay, California, for Water Year 2003","interactions":[],"lastModifiedDate":"2016-07-26T16:28:50","indexId":"70174257","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3914,"text":"Interagency Ecological Program Newsletter","active":true,"publicationSubtype":{"id":10}},"title":"Specific conductance and water temperature data for San Francisco Bay, California, for Water Year 2003","docAbstract":"

This article presents time-series graphs of specific-conductance and water-temperature data collected in San Francisco Bay during water year 2003 (October 1, 2002, through September 30, 2003). Specific-conductance and water-temperature data were recorded at 15-minute intervals at the following US Geological Survey (USGS) locations (Figure 1): • Suisun Bay at Benicia Bridge, near Benicia, CA. (BEN) (site # 11455780) • Carquinez Strait at Carquinez Bridge, near Crockett, CA. (CARQ) (site # 11455820) • Napa River at Mare Island Causeway, near Vallejo, CA. (NAP) (site # 11458370) • San Pablo Strait at Point San Pablo, CA. (PSP) (site # 11181360) • San Pablo Bay at Petaluma River Channel Marker 9, CA. (SPB) (site # 380519122262901) • San Francisco Bay at Presidio Military Reservation, CA. (PRES) (site # 11162690) • San Francisco Bay at San Mateo Bridge, near Foster City, CA. (SMB) (site # 11162765) Suspended-sediment-concentration data also were collected at most of these sites during water year 2003. Specific-conductance and water-temperature data from PSP, PRES, and SMB were recorded by the CA Department of Water Resources (DWR) before 1988, by the USGS National Research Program from 1988 to 1989, and by the USGS-DWR cooperative program since 1990. BEN, CARQ, NAP, and SPB were established in 1998 by USGS. The monitoring station at PRES was discontinued on November 12, 2002, due to shoaling at the site.

","language":"English","publisher":"Interagency","usgsCitation":"Buchanan, P., 2004, Specific conductance and water temperature data for San Francisco Bay, California, for Water Year 2003: Interagency Ecological Program Newsletter, v. 17, no. 3, p. 11-14.","productDescription":"4 p.","startPage":"11","endPage":"14","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true},{"id":5079,"text":"Pacific Regional Director's Office","active":true,"usgs":true}],"links":[{"id":324775,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":324774,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://www.water.ca.gov/iep/newsletters/2004/IEPNewsletter_summer_2004.pdf"}],"country":"United States","state":"California","otherGeospatial":"San Francisco Bay","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -122.41241455078125,\n 38.15723682167875\n ],\n [\n -122.50167846679686,\n 38.120512892298976\n ],\n [\n -122.508544921875,\n 38.04917251752295\n ],\n [\n -122.4810791015625,\n 37.98100996893789\n ],\n [\n -122.50717163085938,\n 37.95286091815649\n ],\n [\n -122.51678466796874,\n 37.923617790524716\n ],\n [\n -122.50167846679686,\n 37.859675659210005\n ],\n [\n -122.46322631835938,\n 37.78156937014928\n ],\n [\n -122.40554809570311,\n 37.79784832917947\n ],\n [\n -122.39044189453124,\n 37.76202988573211\n ],\n [\n -122.3876953125,\n 37.71750400999666\n ],\n [\n -122.39318847656249,\n 37.66099365286694\n ],\n [\n -122.36709594726562,\n 37.590295170521955\n ],\n [\n -122.26547241210936,\n 37.55111016010861\n ],\n [\n -122.16796875,\n 37.48684571271661\n ],\n [\n -122.09930419921876,\n 37.425797766419976\n ],\n [\n -122.02239990234375,\n 37.41816326969145\n ],\n [\n -121.93450927734375,\n 37.42688834526727\n ],\n [\n -121.91253662109376,\n 37.45632796865522\n ],\n [\n -122.0416259765625,\n 37.51626173528878\n ],\n [\n -122.13912963867188,\n 37.609879943747146\n ],\n [\n -122.20504760742186,\n 37.73053874574077\n ],\n [\n -122.30392456054688,\n 37.860759886765194\n ],\n [\n -122.31628417968749,\n 37.91603433975963\n ],\n [\n -122.39456176757811,\n 37.94311450175187\n ],\n [\n -122.34924316406251,\n 37.990751356571195\n ],\n [\n -122.21466064453125,\n 38.05782354290831\n ],\n [\n -122.24212646484375,\n 38.09241741843045\n ],\n [\n -122.39044189453124,\n 38.155077102180655\n ],\n [\n -122.41241455078125,\n 38.15723682167875\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"17","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"577e2bb2e4b0ef4d2f445a4b","contributors":{"authors":[{"text":"Buchanan, P.A. 0000-0002-4796-4734","orcid":"https://orcid.org/0000-0002-4796-4734","contributorId":48997,"corporation":false,"usgs":true,"family":"Buchanan","given":"P.A.","affiliations":[],"preferred":false,"id":641638,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70046139,"text":"70046139 - 2004 - 2002 Water-Table Contours of the Mojave River and the Morongo Ground-Water Basins, San Bernardino County, California","interactions":[],"lastModifiedDate":"2013-05-28T14:55:29","indexId":"70046139","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":6,"text":"USGS Unnumbered Series"},"title":"2002 Water-Table Contours of the Mojave River and the Morongo Ground-Water Basins, San Bernardino County, California","docAbstract":"The Mojave River and Morongo ground-water basins are in the southwestern part of the Mojave Desert in southern California. Ground water from these basins supplies a major part of the water requirements for the region. The continuous population growth in this area has resulted in ever-increasing demands on local ground-water resources. The collection and interpretation of ground-water data helps local water districts, military bases, and private citizens gain a better understanding of the ground-water flow systems, and consequently, water availability. During 2002, the U.S. Geological Survey and other agencies made approximately 2,500 water-level measurements in the Mojave River and Morongo ground-water basins. These data document recent conditions and, when compared with previous data, changes in ground-water levels. A water-level contour map was drawn using data from about 660 wells, providing coverage for most of the basins. Twenty-eight hydrographs show long-term (up to 70 years) water-level conditions throughout the basins, and 9 short-term (1997 to 2002) hydrographs show the effects of recharge and discharge along the Mojave River. In addition, a water-level-change map was compiled to compare 2000 and 2002 water levels throughout the basins. In the Mojave River ground-water basin, about 66 percent of the wells had water-level declines of 0.5 ft or more since 2000 and about 27 percent of the wells had water-level declines greater than 5 ft. The only area that had water-level increases greater than 5 ft that were not attributed to fluctuations in nearby pumpage was in the Harper Lake (dry) area where there has been a significant reduction in pumpage during the last decade. In the Morongo ground-water basin, about 36 percent of the wells had water-level declines of 0.5 ft or more and about 10 percent of the wells had water-level declines greater than 5 ft. Water-level increases greater than 5 ft were measured only in the Warren subbasin, where artificial-recharge operations have caused water levels to rise almost 60 ft since 2000.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/70046139","usgsCitation":"Smith, G., Stamos, C., and Predmore, S., 2004, 2002 Water-Table Contours of the Mojave River and the Morongo Ground-Water Basins, San Bernardino County, California, Dataset, https://doi.org/10.3133/70046139.","productDescription":"Dataset","costCenters":[],"links":[{"id":272922,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":272921,"type":{"id":16,"text":"Metadata"},"url":"https://water.usgs.gov/GIS/metadata/usgswrd/XML/cont2002.xml"}],"country":"United States","state":"California","county":"San Bernardino","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -117.662117,34.095200 ], [ -117.662117,35.057328 ], [ -116.035031,35.057328 ], [ -116.035031,34.095200 ], [ -117.662117,34.095200 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"51a5d1e3e4b0605bc571ef84","contributors":{"authors":[{"text":"Smith, G.A. 0000-0001-8170-9924","orcid":"https://orcid.org/0000-0001-8170-9924","contributorId":38350,"corporation":false,"usgs":true,"family":"Smith","given":"G.A.","email":"","affiliations":[],"preferred":false,"id":479009,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stamos, C.L.","contributorId":14019,"corporation":false,"usgs":true,"family":"Stamos","given":"C.L.","email":"","affiliations":[],"preferred":false,"id":479008,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Predmore, S.K.","contributorId":70676,"corporation":false,"usgs":true,"family":"Predmore","given":"S.K.","affiliations":[],"preferred":false,"id":479010,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70026380,"text":"70026380 - 2004 - Correlative weighted stacking for seismic data in the wavelet domain","interactions":[],"lastModifiedDate":"2012-03-12T17:20:38","indexId":"70026380","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Correlative weighted stacking for seismic data in the wavelet domain","docAbstract":"Horizontal stacking plays a crucial role for modern seismic data processing, for it not only compresses random noise and multiple reflections, but also provides a foundational data for subsequent migration and inversion. However, a number of examples showed that random noise in adjacent traces exhibits correlation and coherence. The average stacking and weighted stacking based on the conventional correlative function all result in false events, which are caused by noise. Wavelet transform and high order statistics are very useful methods for modern signal processing. The multiresolution analysis in wavelet theory can decompose signal on difference scales, and high order correlative function can inhibit correlative noise, for which the conventional correlative function is of no use. Based on the theory of wavelet transform and high order statistics, high order correlative weighted stacking (HOCWS) technique is presented in this paper. Its essence is to stack common midpoint gathers after the normal moveout correction by weight that is calculated through high order correlative statistics in the wavelet domain. Synthetic examples demonstrate its advantages in improving the signal to noise (S/N) ration and compressing the correlative random noise.","largerWorkTitle":"Progress in Environmental and Engineering Geophysics: Proceedings of the International Conference on Environmental and Engineering Geophysics, ICEEG 2004","conferenceTitle":"Progress in Environmental and Engineering Geophysics: Proceedings of the International Conference on Environmental and Engineering Geophysics, ICEEG 2004","conferenceDate":"6 June 2004 through 9 June 2004","conferenceLocation":"Wuhan","language":"English","isbn":"1880132974","usgsCitation":"Zhang, S., Xu, Y., and Xia, J., 2004, Correlative weighted stacking for seismic data in the wavelet domain, in Progress in Environmental and Engineering Geophysics: Proceedings of the International Conference on Environmental and Engineering Geophysics, ICEEG 2004, Wuhan, 6 June 2004 through 9 June 2004, p. 161-165.","startPage":"161","endPage":"165","numberOfPages":"5","costCenters":[],"links":[{"id":233936,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fc52e4b0c8380cd4e217","contributors":{"editors":[{"text":"Chen C.Xia J.","contributorId":128353,"corporation":true,"usgs":false,"organization":"Chen C.Xia J.","id":536599,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Zhang, S.","contributorId":51064,"corporation":false,"usgs":true,"family":"Zhang","given":"S.","email":"","affiliations":[],"preferred":false,"id":409276,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Xu, Y.","contributorId":47816,"corporation":false,"usgs":true,"family":"Xu","given":"Y.","email":"","affiliations":[],"preferred":false,"id":409275,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Xia, J.","contributorId":63513,"corporation":false,"usgs":true,"family":"Xia","given":"J.","email":"","affiliations":[],"preferred":false,"id":409277,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70032311,"text":"70032311 - 2004 - Ecosystem restoration on the California Channel Islands","interactions":[],"lastModifiedDate":"2012-03-12T17:21:26","indexId":"70032311","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Ecosystem restoration on the California Channel Islands","docAbstract":"Restoration of natural habitat has become increasingly important over the last three decades in the United States, first as mitigation for development (especially in wetlands), and more recently in natural areas. This latter restoration has come about as land managing agencies have seen the need to reverse the impact of past land uses and agencies like the National Park Service have taken on the responsibility for less-than-pristine lands. Restorations have typically been carried out with little prior study and with no follow-up monitoring. On the Channel Islands, the need for restoration is great, but the desire is to base this restoration on sound ecological understanding. By conducting surveys, implementing long-term research and monitoring, and by conducting population and community dynamics research, the necessary data is obtained to arrive at such an understanding. Once management actions have been taken to effect restoration, monitoring is used to determine the success of those actions. The intention is to gain enough of an understanding of the islands' ecosystems that we can manage to restore, not just populations of native plants and animals, but also the processes of a naturally functioning ecosystem. ?? International Scientific Publications, New Delhi.","largerWorkTitle":"International Journal of Ecology and Environmental Sciences","language":"English","issn":"03770","usgsCitation":"Halvorson, W.L., 2004, Ecosystem restoration on the California Channel Islands, in International Journal of Ecology and Environmental Sciences, v. 30, no. 3, p. 169-174.","startPage":"169","endPage":"174","numberOfPages":"6","costCenters":[],"links":[{"id":242413,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"30","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a05a0e4b0c8380cd50ea0","contributors":{"authors":[{"text":"Halvorson, W. L.","contributorId":26246,"corporation":false,"usgs":true,"family":"Halvorson","given":"W.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":435542,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70035235,"text":"70035235 - 2004 - Effect of temporal resolution on the accuracy of ADCP measurements","interactions":[],"lastModifiedDate":"2012-03-12T17:21:54","indexId":"70035235","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Effect of temporal resolution on the accuracy of ADCP measurements","docAbstract":"The application of acoustic Doppler current profilers (ADCP's) in river flow measurements is promoting a great deal of progress in hydrometry. ADCP's not only require shorter times to collect data than traditional current meters, but also allow streamflow measurements at sites where the use of conventional meters is either very expensive, unsafe, or simply not possible. Moreover, ADCP's seem to offer a means for collecting flow data with spatial and temporal resolutions that cannot be achieved with traditional current-meters. High-resolution data is essential to characterize the mean flow and turbulence structure of streams, which can in turn lead to a better understanding of the hydrodynamic and transport processes in rivers. However, to properly characterize the mean flow and turbulence intensities of stationary flows in natural turbulent boundary layers, velocities need to be sampled over a long-enough time span. The question then arises, how long should velocities be sampled in the flow field to achieve an adequate temporal resolution? Theoretically, since velocities cannot be sampled over an infinitely long time interval, the error due to finite integration time must be considered. This error can be estimated using the integral time scale. The integral time scale is not only a measure of the time interval over which a fluctuating function is correlated with itself but also a measure of the time span over which the function is dependent on itself. This time scale, however, is not a constant but varies spatially in the flow field. In this paper we present an analysis of the effect of the temporal resolution (sampling time span) on the accuracy of ADCP measurements based on the integral time scale. Single ping velocity profiles collected with frequencies of 1 Hz in the Chicago River at Columbus Drive using an uplooking 600 kHz ADCP are used in this analysis. The integral time scale at different depths is estimated based on the autocorrelation function of the velocity fluctuations and is used to evaluate the mean-square error as a function of the integration time. The implications of these errors in typical ADCP measurements for discharge estimates in natural streams are discussed. 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)308","isbn":"0784405174; 9780784405178","usgsCitation":"Gonzalez-Castro, J.A., Oberg, K., and Duncker, J., 2004, Effect of temporal resolution on the accuracy of ADCP measurements, in 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)308.","costCenters":[],"links":[{"id":478073,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.598.4783","text":"External Repository"},{"id":215215,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/40517(2000)308"},{"id":243002,"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":"505a0613e4b0c8380cd510f3","contributors":{"authors":[{"text":"Gonzalez-Castro, J. A.","contributorId":96885,"corporation":false,"usgs":true,"family":"Gonzalez-Castro","given":"J.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":449847,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Oberg, K.","contributorId":60376,"corporation":false,"usgs":true,"family":"Oberg","given":"K.","affiliations":[],"preferred":false,"id":449845,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Duncker, James J.","contributorId":62620,"corporation":false,"usgs":true,"family":"Duncker","given":"James J.","affiliations":[],"preferred":false,"id":449846,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70035185,"text":"70035185 - 2004 - Modeling the Death Valley regional ground-water flow system","interactions":[],"lastModifiedDate":"2017-07-13T13:42:13","indexId":"70035185","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Modeling the Death Valley regional ground-water flow system","docAbstract":"

The development of a regional ground-water flow model of the Death Valley region in the southwestern United States is discussed in the context of the fourteen guidelines of Hill. This application of the guidelines demonstrates how they may be used for model calibration and evaluation, and to direct further model development and data collection.

","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)19","isbn":"0784405174; 9780784405178","usgsCitation":"D’Agnese, F.A., Faunt, C., and Hill, M.C., 2004, Modeling the Death Valley regional ground-water flow system, in Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000: Building Partnerships, Minneapolis, MN, 30 July 2000 through 2 August 2000, p. 1-10, https://doi.org/10.1061/40517(2000)19.","productDescription":"10 p. ","startPage":"1","endPage":"10","costCenters":[{"id":493,"text":"Office of Ground Water","active":true,"usgs":true}],"links":[{"id":243261,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215454,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/40517(2000)19"}],"country":"United States","state":"California, Nevada","otherGeospatial":"Death Valley","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -118.5205078125,\n 35.782170703266075\n ],\n [\n -115.8837890625,\n 35.782170703266075\n ],\n [\n -115.8837890625,\n 38.272688535980976\n ],\n [\n -118.5205078125,\n 38.272688535980976\n ],\n [\n -118.5205078125,\n 35.782170703266075\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationDate":"2012-04-26","publicationStatus":"PW","scienceBaseUri":"505a5c37e4b0c8380cd6faf6","contributors":{"authors":[{"text":"D’Agnese, F. A.","contributorId":6096,"corporation":false,"usgs":true,"family":"D’Agnese","given":"F.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":449636,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Faunt, C.C. 0000-0001-5659-7529","orcid":"https://orcid.org/0000-0001-5659-7529","contributorId":103314,"corporation":false,"usgs":true,"family":"Faunt","given":"C.C.","affiliations":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"preferred":false,"id":449638,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hill, M. C.","contributorId":48993,"corporation":false,"usgs":true,"family":"Hill","given":"M.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":449637,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70035287,"text":"70035287 - 2004 - Monograph for using paleoflood data in Water Resources Applications","interactions":[],"lastModifiedDate":"2012-03-12T17:21:57","indexId":"70035287","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Monograph for using paleoflood data in Water Resources Applications","docAbstract":"The Environmental and Water Resources Institute (EWRI) Technical Committee on Surface Water Hydrology is sponsoring a Task Committee on Paleoflood Hydrology to prepare a monograph entitled, \"Use of Paleoflood and Historical Data in Water Resources Applications.\" This paper introduces the subject of paleoflood hydrology and discusses the topics, which are expected to be included in the monograph. The procedure for preparing and reviewing the monograph will also be discussed. The paleoflood hydrology monograph will include a discussion of types of hydrologic and paleoflood data, paleostage indicators, flood chronology, modeling methods, interpretation issues, water resources applications and case studies, and research needs. Paleoflood data collection and analysis techniques will be presented, and various applications in water-resources investigations will be provided. An overview of several flood frequency analysis approaches, which consider historical and paleoflood data along with systematic streamflow records, will be presented. The monograph is scheduled for completion and publication in 2001. 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)123","isbn":"0784405174; 9780784405178","usgsCitation":"Swain, R., and Jarrett, R., 2004, Monograph for using paleoflood data in Water Resources Applications, in 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)123.","costCenters":[],"links":[{"id":215519,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/40517(2000)123"},{"id":243330,"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":"505a5e04e4b0c8380cd70760","contributors":{"authors":[{"text":"Swain, R.E.","contributorId":11079,"corporation":false,"usgs":true,"family":"Swain","given":"R.E.","email":"","affiliations":[],"preferred":false,"id":450025,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jarrett, R.D.","contributorId":36551,"corporation":false,"usgs":true,"family":"Jarrett","given":"R.D.","email":"","affiliations":[],"preferred":false,"id":450026,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"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, in 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}]}} ,{"id":70035452,"text":"70035452 - 2004 - WTAQ - A computer program for aquifer-test analysis of confined and unconfined aquifers","interactions":[],"lastModifiedDate":"2012-03-12T17:21:54","indexId":"70035452","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"WTAQ - A computer program for aquifer-test analysis of confined and unconfined aquifers","docAbstract":"Computer program WTAQ was developed to implement a Laplace-transform analytical solution for axial-symmetric flow to a partially penetrating, finite-diameter well in a homogeneous and anisotropic unconfined (water-table) aquifer. The solution accounts for wellbore storage and skin effects at the pumped well, delayed response at an observation well, and delayed or instantaneous drainage from the unsaturated zone. For the particular case of zero drainage from the unsaturated zone, the solution simplifies to that of axial-symmetric flow in a confined aquifer. WTAQ calculates theoretical time-drawdown curves for the pumped well and observation wells and piezometers. The theoretical curves are used with measured time-drawdown data to estimate hydraulic parameters of confined or unconfined aquifers by graphical type-curve methods or by automatic parameter-estimation methods. Parameters that can be estimated are horizontal and vertical hydraulic conductivity, specific storage, and specific yield. A sample application illustrates use of WTAQ for estimating hydraulic parameters of a hypothetical, unconfined aquifer by type-curve methods. 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)366","isbn":"0784405174; 9780784405178","usgsCitation":"Barlow, P.M., and Moench, A., 2004, WTAQ - A computer program for aquifer-test analysis of confined and unconfined aquifers, in 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)366.","costCenters":[],"links":[{"id":243312,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215502,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/40517(2000)366"}],"volume":"104","noUsgsAuthors":false,"publicationDate":"2012-04-26","publicationStatus":"PW","scienceBaseUri":"505bc3b4e4b08c986b32b32f","contributors":{"authors":[{"text":"Barlow, P. M.","contributorId":63022,"corporation":false,"usgs":true,"family":"Barlow","given":"P.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":450736,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Moench, A.F.","contributorId":91495,"corporation":false,"usgs":true,"family":"Moench","given":"A.F.","email":"","affiliations":[],"preferred":false,"id":450737,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70035448,"text":"70035448 - 2004 - A web-enabled system for integrated assessment of watershed development","interactions":[],"lastModifiedDate":"2012-03-12T17:21:54","indexId":"70035448","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2004","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"A web-enabled system for integrated assessment of watershed development","docAbstract":"Researchers at Virginia Tech have put together the primary structure of a web enabled integrated modeling system that has potential to be a planning tool to help decision makers and stakeholders in making appropriate watershed management decisions. This paper describes the integrated system, including data sources, collection, analysis methods, system software and design, and issues of integrating the various component models. The integrated system has three modeling components, namely hydrology, economics, and fish health, and is accompanied by descriptive 'help files.' Since all three components have a related spatial aspect, GIS technology provides the integration platform. When completed, a user will access the integrated system over the web to choose pre-selected land development patterns to create a 'what if' scenario using an easy-to-follow interface. The hydrologic model simulates effects of the scenario on annual runoff volume, flood peaks of various return periods, and ground water recharge. The economics model evaluates tax revenue and fiscal costs as a result of a new land development scenario. The fish health model evaluates effects of new land uses in zones of influence to the health of fish populations in those areas. Copyright ASCE 2004.","largerWorkTitle":"Bridging the Gap: Meeting the World's Water and Environmental Resources Challenges - Proceedings of the World Water and Environmental Resources Congress 2001","conferenceTitle":"World Water and Environmental Resources Congress 2001","conferenceDate":"20 May 2001 through 24 May 2001","conferenceLocation":"Orlando, FL","language":"English","doi":"10.1061/40569(2001)113","isbn":"0784405697; 9780784405697","usgsCitation":"Dymond, R., Lohani, V., Regmi, B., and Dietz, R., 2004, A web-enabled system for integrated assessment of watershed development, in Bridging the Gap: Meeting the World's Water and Environmental Resources Challenges - Proceedings of the World Water and Environmental Resources Congress 2001, v. 111, Orlando, FL, 20 May 2001 through 24 May 2001, https://doi.org/10.1061/40569(2001)113.","costCenters":[],"links":[{"id":215500,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/40569(2001)113"},{"id":243310,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"111","noUsgsAuthors":false,"publicationDate":"2012-04-26","publicationStatus":"PW","scienceBaseUri":"5059e61de4b0c8380cd47183","contributors":{"authors":[{"text":"Dymond, R.","contributorId":44754,"corporation":false,"usgs":true,"family":"Dymond","given":"R.","email":"","affiliations":[],"preferred":false,"id":450726,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lohani, V.","contributorId":23351,"corporation":false,"usgs":true,"family":"Lohani","given":"V.","email":"","affiliations":[],"preferred":false,"id":450725,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Regmi, B.","contributorId":58860,"corporation":false,"usgs":true,"family":"Regmi","given":"B.","email":"","affiliations":[],"preferred":false,"id":450727,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Dietz, R.","contributorId":17061,"corporation":false,"usgs":true,"family":"Dietz","given":"R.","email":"","affiliations":[],"preferred":false,"id":450724,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ]}