No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr0034","issn":"0094-9140","usgsCitation":"Church, S.E., 2000, Preliminary release of scientific reports on the acidic drainage in the Animas River watershed, San Juan County, Colorado: U.S. Geological Survey Open-File Report 2000-34, ii, 116 p., https://doi.org/10.3133/ofr0034.","productDescription":"ii, 116 p.","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":402079,"rank":2,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_23406.htm","text":"Geologic control on acidic and metal-rich waters in the southeast Red Mountains area, near Silverton, Colorado","linkFileType":{"id":5,"text":"html"}},{"id":153065,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/2000/0034/report-thumb.jpg"},{"id":51508,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2000/0034/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":465490,"rank":4,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_23407.htm","text":"Pre-mining bed sediment geochemical baseline in the Animas River watershed, southwestern Colorado","linkFileType":{"id":5,"text":"html"}},{"id":465491,"rank":5,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_23408.htm","text":"Natural sources of metals to surface waters in the upper Animas River watershed, Colorado","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Colorado","county":"San Juan 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Juan\",\"state\":\"CO\"}}]}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4895e4b07f02db5228e1","contributors":{"authors":[{"text":"Church, S. E.","contributorId":58260,"corporation":false,"usgs":true,"family":"Church","given":"S.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":186862,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":22046,"text":"ofr00134 - 2000 - Preliminary model of the pre-Tertiary basement rocks beneath Yucca Flat, Nevada Test Site, Nevada, based on analysis of gravity and magnetic data","interactions":[],"lastModifiedDate":"2023-06-22T13:19:06.752778","indexId":"ofr00134","displayToPublicDate":"2000-10-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2000-134","title":"Preliminary model of the pre-Tertiary basement rocks beneath Yucca Flat, Nevada Test Site, Nevada, based on analysis of gravity and magnetic data","docAbstract":"The Environmental Restoration Program of the U.S. Department of Energy, Nevada Operations Office, was developed to investigate the possible consequences to the environment of 40 years of nuclear testing on the Nevada Test Site. The majority of the tests were detonated underground, introducing contaminants into the ground-water system (Laczniak and others, 1996). An understanding of the ground-water flow paths is necessary to evaluate the extent of ground-water contamination. This report provides information specific to Yucca Flat on the Nevada Test Site.
\nCritical to understanding the ground-water flow beneath Yucca Flat is an understanding of the subsurface geology, particularly the structure and distribution of the pre-Tertiary rocks, which comprise both the major regional aquifer and aquitard sequences (Winograd and Thordarson, 1975; Laczniak and others, 1996). Because the pre-Tertiary rocks are not exposed at the surface of Yucca Flat their distribution must be determined through well logs and less direct geophysical methods such as potential field studies.
\nIn previous studies (Phelps and others, 1999; Phelps and Mckee, 1999) developed a model of the basement surface of the Paleozoic rocks beneath Yucca Flat and a series of normal faults that create topographic relief on the basement surface.
\nIn this study the basement rocks and structure of Yucca Flat are examined in more detail using the basement gravity anomaly derived from the isostatic gravity inversion model of Phelps and others (1999) and high-resolution magnetic data, as part of an effort to gain a better understanding of the Paleozoic rocks beneath Yucca Flat in support of groundwater modeling.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr00134","issn":"0094-9140","collaboration":"Prepared in cooperation with the Nevada Operations Office, U.S. Department of Energy (Interagency Agreement DE-AI08-96NV11967)","usgsCitation":"Phelps, G., McKee, E.H., Sweetkind, D., and Langenheim, V., 2000, Preliminary model of the pre-Tertiary basement rocks beneath Yucca Flat, Nevada Test Site, Nevada, based on analysis of gravity and magnetic data: U.S. Geological Survey Open-File Report 2000-134, Report: 11 p., Figures 1-5, https://doi.org/10.3133/ofr00134.","productDescription":"Report: 11 p., Figures 1-5","additionalOnlineFiles":"Y","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":153315,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr00134.jpg"},{"id":110066,"rank":7,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_25679.htm","linkFileType":{"id":5,"text":"html"},"description":"25679"},{"id":1210,"rank":6,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2000/0134/","linkFileType":{"id":5,"text":"html"}},{"id":281177,"rank":3,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2000/0134/pdf/of00-134_fig2.pdf"},{"id":281179,"rank":2,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2000/0134/pdf/of00-134_fig5.pdf"},{"id":281176,"rank":5,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2000/0134/pdf/of00-134_fig1.pdf"},{"id":281178,"rank":4,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2000/0134/pdf/of00-134_figs3and4.pdf"}],"scale":"100000","projection":"Universal Transverse Mercator","datum":"NAD27","country":"United States","state":"Nevada","otherGeospatial":"Yucca Flat","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -116.259899,36.874883 ], [ -116.259899,37.260118 ], [ -115.87497,37.260118 ], [ -115.87497,36.874883 ], [ -116.259899,36.874883 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aafe4b07f02db66cd75","contributors":{"authors":[{"text":"Phelps, Geoffrey A.","contributorId":17262,"corporation":false,"usgs":true,"family":"Phelps","given":"Geoffrey A.","affiliations":[],"preferred":false,"id":186838,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McKee, Edwin H. mckee@usgs.gov","contributorId":3728,"corporation":false,"usgs":true,"family":"McKee","given":"Edwin","email":"mckee@usgs.gov","middleInitial":"H.","affiliations":[],"preferred":true,"id":186837,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sweetkind, D.","contributorId":83645,"corporation":false,"usgs":true,"family":"Sweetkind","given":"D.","affiliations":[],"preferred":false,"id":186840,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Langenheim, V.E. 0000-0003-2170-5213","orcid":"https://orcid.org/0000-0003-2170-5213","contributorId":54956,"corporation":false,"usgs":true,"family":"Langenheim","given":"V.E.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":false,"id":186839,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":22033,"text":"ofr00143 - 2000 - Preliminary evaluation of the coalbed methane resources of the Gulf Coastal Plain","interactions":[],"lastModifiedDate":"2012-02-02T00:07:50","indexId":"ofr00143","displayToPublicDate":"2000-10-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2000-143","title":"Preliminary evaluation of the coalbed methane resources of the Gulf Coastal Plain","language":"ENGLISH","publisher":"U.S. Geological Survey, Eastern Energy Resource Surveys Team,","doi":"10.3133/ofr00143","issn":"0094-9140","usgsCitation":"Warwick, P.D., Barker, C., SanFilipo, J., and Biewick, L., 2000, Preliminary evaluation of the coalbed methane resources of the Gulf Coastal Plain: U.S. Geological Survey Open-File Report 2000-143, 43 p., https://doi.org/10.3133/ofr00143.","productDescription":"43 p.","costCenters":[],"links":[{"id":153790,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":1206,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/of00-143/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac9e4b07f02db67c3ba","contributors":{"authors":[{"text":"Warwick, Peter D. 0000-0002-3152-7783 pwarwick@usgs.gov","orcid":"https://orcid.org/0000-0002-3152-7783","contributorId":762,"corporation":false,"usgs":true,"family":"Warwick","given":"Peter","email":"pwarwick@usgs.gov","middleInitial":"D.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":186772,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Barker, C.E.","contributorId":69991,"corporation":false,"usgs":true,"family":"Barker","given":"C.E.","affiliations":[],"preferred":false,"id":186775,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"SanFilipo, J.R. 0000-0002-8739-5628","orcid":"https://orcid.org/0000-0002-8739-5628","contributorId":27074,"corporation":false,"usgs":true,"family":"SanFilipo","given":"J.R.","affiliations":[],"preferred":false,"id":186773,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Biewick, L.R.","contributorId":61067,"corporation":false,"usgs":true,"family":"Biewick","given":"L.R.","email":"","affiliations":[],"preferred":false,"id":186774,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":22826,"text":"ofr00157 - 2000 - Seismic instrumentation of buildings","interactions":[],"lastModifiedDate":"2014-01-24T14:46:33","indexId":"ofr00157","displayToPublicDate":"2000-10-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2000-157","title":"Seismic instrumentation of buildings","docAbstract":"The purpose of this report is to provide information on how and why we deploy seismic instruments in and around building structures.\n\nThe recorded response data from buildings and other instrumented structures can be and are being primarily used to facilitate necessary studies to improve building codes and therefore reduce losses of life and property during damaging earthquakes. Other uses of such data can be in emergency response situations in large urban environments.\n\nThe report discusses typical instrumentation schemes, existing instrumentation programs, the steps generally followed in instrumenting a structure, selection and type of instruments, installation and maintenance requirements and data retrieval and processing issues. In addition, a summary section on how recorded response data have been utilized is included. The benefits from instrumentation of structural systems are discussed.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr00157","issn":"0094-9140","usgsCitation":"Çelebi, M., 2000, Seismic instrumentation of buildings: U.S. Geological Survey Open-File Report 2000-157, 37 p., https://doi.org/10.3133/ofr00157.","productDescription":"37 p.","numberOfPages":"37","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":281516,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr00157.jpg"},{"id":281515,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2000/0157/pdf/of00-157.pdf"},{"id":281513,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2000/0157/"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a0ae4b07f02db5fb7a5","contributors":{"authors":[{"text":"Çelebi, Mehmet","contributorId":27493,"corporation":false,"usgs":true,"family":"Çelebi","given":"Mehmet","affiliations":[],"preferred":false,"id":188946,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":23029,"text":"ofr00114 - 2000 - Analytical results for total-digestions, EPA-1312 leach, and net acid production for twenty-three abandoned metal-mining related wastes in the Boulder River watershed, northern Jefferson County, Montana","interactions":[],"lastModifiedDate":"2020-02-23T17:22:42","indexId":"ofr00114","displayToPublicDate":"2000-10-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2000-114","title":"Analytical results for total-digestions, EPA-1312 leach, and net acid production for twenty-three abandoned metal-mining related wastes in the Boulder River watershed, northern Jefferson County, Montana","docAbstract":"Metal-mining related wastes in the Boulder River basin study area in northern Jefferson County, Montana, have been implicated in their detrimental effects on water quality with regard to acid generation and toxic-metal solubilization during snow melt and storm water runoff events. This degradation of water quality is defined chiefly by the “Class 1 Aquatic Life Standards” that give limits for certain dissolved metal concentrations according to water alkalinity.
Veins enriched in base- and precious metals were explored and mined in the Basin, Cataract Creek, and High Ore Creek drainages over a period of more than 70 years. Extracted minerals included galena, sphalerite, pyrite, chalcopyrite, tetrahedrite and arsenopyrite. Most of the metal-mining wastes in the study area were identified and described by the Montana Bureau of Mines and Geology. In 1997, the U.S. Geological Survey collected 20 composite samples of mine-dump or tailings waste from ten sites in the Basin and Cataract Creek drainages, and two samples from one site in the High Ore Creek drainage. Desborough and Fey presented data concerning acid generation potential, mineralogy, concentrations of certain metals by energy-dispersive X-ray fluorescence (EDXRF), and trace-element leachability of mine and exploration wastes from the ten sites of the Basin and Cataract Creek drainages. The present report presents total-digestion major- and trace-element analyses, net acid production (NAP), and results from the EPA-1312 synthetic precipitation leach procedure (SPLP) performed on the same composite samples from the ten sites from the Basin and Cataract Creek drainages, and two composite samples from the site in the High Ore Creek drainage.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr00114","issn":"0094-9140","usgsCitation":"Fey, D.L., Desborough, G.A., and Finney, C.J., 2000, Analytical results for total-digestions, EPA-1312 leach, and net acid production for twenty-three abandoned metal-mining related wastes in the Boulder River watershed, northern Jefferson County, Montana: U.S. Geological Survey Open-File Report 2000-114, Report: i, 17 p.; 4 Tables, https://doi.org/10.3133/ofr00114.","productDescription":"Report: i, 17 p.; 4 Tables","onlineOnly":"Y","additionalOnlineFiles":"Y","costCenters":[{"id":102,"text":"Abandoned Mine Lands Initiative","active":false,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":340593,"rank":3,"type":{"id":27,"text":"Table"},"url":"https://pubs.usgs.gov/of/2000/ofr-00-0114/ofr20000114_table1.xls","text":"Table 1","size":"18 KB","linkFileType":{"id":3,"text":"xlsx"},"description":"Table 1","linkHelpText":"- Sample numbers, localities, size estimates, and site descriptions of dump samples from the Boulder Watershed study area"},{"id":340594,"rank":4,"type":{"id":27,"text":"Table"},"url":"https://pubs.usgs.gov/of/2000/ofr-00-0114/ofr20000114_table2.xls","text":"Table 2","size":"20.5 KB","linkFileType":{"id":3,"text":"xlsx"},"description":"Table 2","linkHelpText":"- Total-digestion ICP-AES analyses of mine wastes collected from the Boulder River watershed study area"},{"id":340595,"rank":5,"type":{"id":27,"text":"Table"},"url":"https://pubs.usgs.gov/of/2000/ofr-00-0114/ofr20000114_table3.xls","text":"Table 3","size":"24 KB","linkFileType":{"id":3,"text":"xlsx"},"description":"Table 3","linkHelpText":"- pH, conductivities, ICP-AES analyses of EPA 1312 leach solutions, and Net Acid Production (NAP) of mine waste samples collected from Boulder River Watershed study area"},{"id":340596,"rank":6,"type":{"id":27,"text":"Table"},"url":"https://pubs.usgs.gov/of/2000/ofr-00-0114/ofr20000114_table4.xls","text":"Table 4","size":"19.5 KB","linkFileType":{"id":3,"text":"xlsx"},"description":"Table 4","linkHelpText":"- NAP, summed dissolved metals As+Cd+Cu+Pb+Zn and dissolved iron, in EPA -1312 leach solutions, and chemical ranks of mine wastes"},{"id":341933,"rank":7,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2000/ofr-00-0114/"},{"id":339895,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2000/ofr-00-0114/ofr-00-0114.pdf","text":"Report","size":"250 kB","linkFileType":{"id":1,"text":"pdf"},"description":"OFR 2000-0114"},{"id":155139,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/2000/ofr-00-0114/coverthb.jpg"}],"country":"United States","state":"Montana","county":"Jefferson County","otherGeospatial":"Boulder River watershed","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -112.4066162109375,\n 46.2\n ],\n [\n -111.79412841796875,\n 46.2\n ],\n [\n -111.79412841796875,\n 46.5720787149159\n ],\n [\n -112.4066162109375,\n 46.5720787149159\n ],\n [\n -112.4066162109375,\n 46.2\n ]\n ]\n ]\n }\n }\n ]\n}","contact":"Center Director, Central Mineral and Environmental Resources Science Center
U.S. Geological Survey
Box 25046, Mail Stop 973
Denver, CO 80225
This program, SUDS2SEGY, converts and combines ASCII files created using SUDS2ASC Version 2.60, to a single SEGY file.
\nSUDS2ASC has been used previously to create an ASCII file of three-component seismic data for an individual recording station. However, many seismic processing packages have difficulty reading in ASCII data. In addition, it may be cumbersome to process a separate file for each recording station, particularly if traces from different recording stations contain a different number of data samples and/or a different start time.
\nThis new program - SUDS2SEGY - combines these recording station files into a single SEGY file. In addition, SUDS2SEGY normalizes the trace times so that each trace starts at a given time and consists of a fixed number of samples. This normalization allows seismic data from many different stations to be read in as a single \"data gather\". SUDS2SEGY also produces a report summarizing the offset and maximum absolute amplitude for each component in a station file. These data are output separately to an ASCII file and can be subsequently input to a plotting package.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr00141","issn":"0094-9140","usgsCitation":"Goldman, M., 2000, Program to convert SUDS2ASC files to a single binary SEGY file: U.S. Geological Survey Open-File Report 2000-141, Readme; SUDS2SEGY: source code; Documentation; SUDS2SEGY 1.0.tar, https://doi.org/10.3133/ofr00141.","productDescription":"Readme; SUDS2SEGY: source code; Documentation; SUDS2SEGY 1.0.tar","additionalOnlineFiles":"Y","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":154461,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":1342,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2000/0141/","linkFileType":{"id":5,"text":"html"}},{"id":281437,"type":{"id":20,"text":"Read Me"},"url":"https://pubs.usgs.gov/of/2000/0141/README.txt"},{"id":281438,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/2000/0141/SUDS2SEGY.cc"},{"id":281439,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2000/0141/DOCUMENTATION.txt"},{"id":281440,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/2000/0141/SUDS2SEGY_1.0.tar"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a9be4b07f02db65e0c9","contributors":{"authors":[{"text":"Goldman, Mark","contributorId":21637,"corporation":false,"usgs":true,"family":"Goldman","given":"Mark","affiliations":[],"preferred":false,"id":189633,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":6893,"text":"fs08000 - 2000 - Flood of July 8, 1999, in Las Vegas Valley, southern Nevada","interactions":[],"lastModifiedDate":"2012-02-02T00:05:53","indexId":"fs08000","displayToPublicDate":"2000-10-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"080-00","title":"Flood of July 8, 1999, in Las Vegas Valley, southern Nevada","language":"ENGLISH","publisher":"Geological Survey (U.S.)","doi":"10.3133/fs08000","usgsCitation":"Tanko, D.J., and Kane, R.L., 2000, Flood of July 8, 1999, in Las Vegas Valley, southern Nevada: U.S. Geological Survey Fact Sheet 080-00, 4 p., https://doi.org/10.3133/fs08000.","productDescription":"4 p.","costCenters":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"links":[{"id":126822,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/fs/2000/0080/report-thumb.jpg"},{"id":34198,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/fs/2000/0080/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49f2e4b07f02db5eedaf","contributors":{"authors":[{"text":"Tanko, Daron J.","contributorId":88343,"corporation":false,"usgs":true,"family":"Tanko","given":"Daron","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":153527,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kane, Richard L. rkane@usgs.gov","contributorId":2034,"corporation":false,"usgs":true,"family":"Kane","given":"Richard","email":"rkane@usgs.gov","middleInitial":"L.","affiliations":[],"preferred":true,"id":153526,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70162312,"text":"70162312 - 2000 - The web of life: Natural science information on the Internet","interactions":[],"lastModifiedDate":"2016-06-17T14:01:49","indexId":"70162312","displayToPublicDate":"2000-10-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5042,"text":"Journal of Library Administration","active":true,"publicationSubtype":{"id":10}},"title":"The web of life: Natural science information on the Internet","docAbstract":"As society has come to equate economic prosperity with the health of our living resources, national science policy has called for the development of a comprehensive digital knowledge base to support informed decision making and wise resource management. The Internet and World Wide Web demonstrate the earliest stages of this evolving virtual library of the natural world, offering an increasing array of high-quality, innovative resources and services in the natural science arena. This article discusses the leading providers of natural science information on the Internet and highlights some of the exemplary resources they are delivering online. The discussion concludes with a brief discussion of the role of the librarian in developing the Web of natural science knowledge online and provides a short Webliography of starting points for further exploration of this subject area.
\nThe U.S. Geological Survey is participating in a multi-institutional effort to assess, monitor, and restore the ecosystem of South Florida. Federal, State and local agencies are collaborating to establish a firm scientific basis for land management and water policy issues. Historical changes in South Florida related to rapid population growth in the early to middle 1900's have led to significant alteration of the natural hydrocycles and water quality of Florida and Biscayne Bays. These changes have affected the salinity and nutrient supply and introduced toxic components into Biscayne Bay. The Biscayne Bay ecosystem shows increasing signs of distress: declines in fisheries, increased pollution, and dramatic changes in nearshore vegetation. Northern and central Biscayne Bay are strongly affected by the urban development associated with the growth of Miami. Southern Biscayne Bay is influenced by drainage from the Everglades, which has been altered by canals and agricultural activities. Restoration and preservation of Biscayne Bay and Biscayne National Park are dependent on a comprehensive understanding of the linkages between the hydrologic system and the bay ecosystem, and of natural versus human-induced variability of the ecosystem.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/fs14596","usgsCitation":"Ishman, S.E., 2000, Ecosystem history of Biscayne Bay and the southeast coast: U.S. Geological Survey Fact Sheet 1996–145, \nhttps://doi.org/10.3133/fs14596.","costCenters":[{"id":27821,"text":"Caribbean-Florida Water Science Center","active":true,"usgs":true}],"links":[{"id":117450,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/fs/1996/0145/coverthb.jpg"},{"id":477,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/fs/1996/0145/","linkFileType":{"id":5,"text":"html"}}],"contact":"Caribbean-Florida Water Science Center
U.S. Geological Survey
3321 College Avenue
Davie, FL 33314
In the past decade seagrass die-offs, algal blooms, and declining numbers of shellfish and sponges have occurred in Florida Bay. These changes have been attributed to human activities; however, neither the natural patterns of change, nor the pre-human baseline for the environment have been determined. Currently, efforts are underway to restore the Everglades ecosystem to a more natural state, but the restoration should be guided by a clear understanding of the natural range of variability that exists within the ecosystem.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/fs14496","usgsCitation":"Ecosystem history of Florida Bay; 2000; FS; 144-96; Geological Survey (U.S.)","productDescription":"HTML Document","costCenters":[{"id":27821,"text":"Caribbean-Florida Water Science Center","active":true,"usgs":true}],"links":[{"id":121780,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/fs/1996/0144/coverthb.jpg"},{"id":633,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/fs/1996/0144/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Florida","otherGeospatial":"Florida Bay","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -80.2893735478387,\n 25.378087761326483\n ],\n [\n -81.60695738630159,\n 25.378087761326483\n ],\n [\n -81.60695738630159,\n 24.522191015352064\n ],\n [\n -80.2893735478387,\n 24.522191015352064\n ],\n [\n -80.2893735478387,\n 25.378087761326483\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","contact":"Caribbean-Florida Water Science Center
U.S. Geological Survey
3321 College Avenue
Davie, FL 33314
Ground water is among the Nation’s most important natural resources. It provides drinking water to urban and rural communities, supports irrigation and industry, sustains the flow of streams and rivers, and maintains riparian and wetland ecosystems. In many areas of the Nation, the future sustainability of ground-water resources is at risk from overuse and contamination. Because ground-water systems typically respond slowly to human actions, a long-term perspective is needed to manage this valuable resource. This publication is one in a series of fact sheets that describe ground-water-resource issues across the United States, as well as some of the activities of the U.S. Geological Survey that provide information to help others develop, manage, and protect ground-water resources in a sustainable manner.
\nGround-water resources in the Southwest are among the most overused in the United States. Natural recharge to aquifers is low and pumping in many areas has resulted in lowering of water tables. The consequences of large-scale removal of water from storage are becoming increasingly evident. These consequences include land subsidence; loss of springs, streams, wetlands and associated habitat; and degradation of water quality. Water managers are now seeking better ways of managing ground-water resources while looking for supplemental sources of water.
\nThis fact sheet reviews basic information on ground water in the desert basins of the Southwest. Also described are some activities of the U.S. Geological Survey (USGS) that are providing scientific information for sustainable management of ground-water resources in the Southwest. Ground-water sustainability is defined as developing and using ground water in a way that can be maintained for an indefinite time without causing unacceptable environmental, economic, or social consequences.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/fs08600","usgsCitation":"Leake, S.A., Konieczki, A.D., and Rees, J.A., 2000, Desert basins of the Southwest: U.S. Geological Survey Fact Sheet 086-00, 4 p., https://doi.org/10.3133/fs08600.","productDescription":"4 p.","numberOfPages":"4","costCenters":[],"links":[{"id":287696,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":287695,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/fs/0086-00/report.pdf"}],"country":"United States","state":"Arizona;California;Nevada;New Mexico;Utah","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -124.41,31.3322 ], [ -124.41,42.01 ], [ -103.002,42.01 ], [ -103.002,31.3322 ], [ -124.41,31.3322 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4ee4b07f02db6280b2","contributors":{"authors":[{"text":"Leake, Stanley A. 0000-0003-3568-2542 saleake@usgs.gov","orcid":"https://orcid.org/0000-0003-3568-2542","contributorId":1846,"corporation":false,"usgs":true,"family":"Leake","given":"Stanley","email":"saleake@usgs.gov","middleInitial":"A.","affiliations":[{"id":128,"text":"Arizona Water Science Center","active":true,"usgs":true}],"preferred":true,"id":153096,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Konieczki, Alice D.","contributorId":69594,"corporation":false,"usgs":true,"family":"Konieczki","given":"Alice","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":153098,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rees, Julie A.H.","contributorId":57318,"corporation":false,"usgs":true,"family":"Rees","given":"Julie","email":"","middleInitial":"A.H.","affiliations":[],"preferred":false,"id":153097,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70127562,"text":"70127562 - 2000 - Relationships among sea-floor structure and benthic communities in Long Island Sound at regional and benthoscape scales","interactions":[],"lastModifiedDate":"2017-09-19T10:12:12","indexId":"70127562","displayToPublicDate":"2000-09-30T10:50:00","publicationYear":"2000","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2220,"text":"Journal of Coastal Research","active":true,"publicationSubtype":{"id":10}},"title":"Relationships among sea-floor structure and benthic communities in Long Island Sound at regional and benthoscape scales","docAbstract":"Long Island Sound is comprised of a rich and spatially heterogeneous mix of sea-floor environments which provide habitat for an equally diverse set of assemblages of soft-sediment communities. Information from recent research on the geomorphological and chemical attributes of these environments, as well as from studies of the hydrodynamics of the Sound, provide the opportunity to develop a landscape, or \"benthoscape\" framework for understanding the soft-sediment ecology of this estuary and for guiding future research focusing on structure and function at multiple spatial scales. This contribution reviews past research on benthic communities in Long Island Sound and addresses how they may be shaped by sea-floor characteristics at regional and benthoscape scales. At the regional scale (i.e. the entire Sound), differences in benthic community composition correspond to the distribution of general sedimentary environments. However, significant variation in community structure also occurs at the benthoscape scale (within regions) related to local variations in sediment properties, and physical and biogenic topographic features. Several topical areas in particular need further research in Long Island Sound, including temporal dynamics of benthic communities relative to sea-floor structure and the interaction between the dynamics of benthoscapes and hydrologic seascapes.","language":"English","publisher":"Coastal Education and Research Foundation","usgsCitation":"Zajac, R.N., Lewis, R., Poppe, L.J., Twichell, D.C., Vozarik, J., and DiGiacomo-Cohen, M.L., 2000, Relationships among sea-floor structure and benthic communities in Long Island Sound at regional and benthoscape scales: Journal of Coastal Research, v. 16, no. 3, p. 627-640.","productDescription":"14 p.","startPage":"627","endPage":"640","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":294628,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":294627,"type":{"id":15,"text":"Index Page"},"url":"https://www.jstor.org/stable/view/4300075"}],"country":"United States","state":"Connecticut, New York","otherGeospatial":"Long Island Sound","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -73.827,40.7578 ], [ -73.827,41.3293 ], [ -72.0244,41.3293 ], [ -72.0244,40.7578 ], [ -73.827,40.7578 ] ] ] } } ] }","volume":"16","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"542bc649e4b0abfb4c8098a9","contributors":{"authors":[{"text":"Zajac, Roman N.","contributorId":89402,"corporation":false,"usgs":true,"family":"Zajac","given":"Roman","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":502413,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lewis, Ralph S.","contributorId":9288,"corporation":false,"usgs":true,"family":"Lewis","given":"Ralph S.","affiliations":[],"preferred":false,"id":502408,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Poppe, Larry J.","contributorId":55913,"corporation":false,"usgs":true,"family":"Poppe","given":"Larry","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":502411,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Twichell, David C.","contributorId":37730,"corporation":false,"usgs":true,"family":"Twichell","given":"David","email":"","middleInitial":"C.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":502409,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Vozarik, Joseph","contributorId":82234,"corporation":false,"usgs":true,"family":"Vozarik","given":"Joseph","email":"","affiliations":[],"preferred":false,"id":502412,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"DiGiacomo-Cohen, Mary L.","contributorId":45253,"corporation":false,"usgs":true,"family":"DiGiacomo-Cohen","given":"Mary","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":502410,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70189019,"text":"70189019 - 2000 - Comment on RamaRao et al. [1995] and LaVenue et al. [1995]","interactions":[],"lastModifiedDate":"2018-03-27T17:15:33","indexId":"70189019","displayToPublicDate":"2000-09-29T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Comment on RamaRao et al. [1995] and LaVenue et al. [1995]","title":"Comment on RamaRao et al. [1995] and LaVenue et al. [1995]","docAbstract":"A method for stochastic modeling of groundwater flow systems using a combination of pilot point parameterization and conditional simulation was presented by RamaRao et. al [1995] and LaVenue et. al [1995]. (We will collectively term these two papers RLMM and term the method developed in RLMM the CS method here.) RLMM (pp. 478-479) state that the CS method is intended to provide a frequency distribution of possible alternative spatial transmissivity T distributions that (1) are statistically similar to the observed T distribution, (2) are equally likely given the calibration data, and (3) closely reproduce the measured pressures. The frequency distribution of transmissivities is then used to form frequency distribution of derived functions, such as travel times, which are summarized in the form of uncertainty measures, such as (RLMM, p. 512) \"confidence (or tolerance) intervals,\" on the actual values, which in the case of travels times, are values that could occur sometime in the future (RLMM, p.513).
Cooley [2000] analyzes the RLMM method using linearization and bootstrap theory and concludes that that the method can yield accurate uncertainty estimates but only under some limited circumstances. In this comment we use Cooley's analysis to critique the method. We also identify and discuss some statements made my by RLMM about model calibration and their methodology that appear to be misleading.
It is unusual to comment on a paper so long after publication. Subsequent work has expanded the method of RLMM, and the method was used advantageously in the testing documented by Zimmerman et. al [1998], so it is clear the method has significant strengths. We go back to the 1995 papers for this comment, however, because they display most clearly the methodological difficulties with which we are concerned.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2000WR900174","usgsCitation":"Cooley, R.L., and Hill, M.C., 2000, Comment on RamaRao et al. [1995] and LaVenue et al. [1995]: Water Resources Research, v. 36, no. 9, p. 2795-2797, https://doi.org/10.1029/2000WR900174.","productDescription":"3 p. ","startPage":"2795","endPage":"2797","costCenters":[{"id":493,"text":"Office of Ground Water","active":true,"usgs":true}],"links":[{"id":343129,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"36","issue":"9","noUsgsAuthors":false,"publicationDate":"2010-07-09","publicationStatus":"PW","scienceBaseUri":"595611c9e4b0d1f9f0506806","contributors":{"authors":[{"text":"Cooley, Richard L.","contributorId":8831,"corporation":false,"usgs":true,"family":"Cooley","given":"Richard","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":702440,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hill, Mary C. mchill@usgs.gov","contributorId":974,"corporation":false,"usgs":true,"family":"Hill","given":"Mary","email":"mchill@usgs.gov","middleInitial":"C.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":702441,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70185215,"text":"70185215 - 2000 - Geology of caves","interactions":[],"lastModifiedDate":"2017-03-16T11:53:02","indexId":"70185215","displayToPublicDate":"2000-09-26T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3556,"text":"The Earth Scientist","active":true,"publicationSubtype":{"id":10}},"title":"Geology of caves","docAbstract":"No abstract available.
","language":"English","publisher":"American Geosciences Institute ","issn":"1045-4772","usgsCitation":"Davies, W., and Morgan, I., 2000, Geology of caves: The Earth Scientist, v. 17, no. 2, p. 12-15.","productDescription":"4 p.","startPage":"12","endPage":"15","costCenters":[],"links":[{"id":337731,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"17","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58cba420e4b0849ce97dc778","contributors":{"authors":[{"text":"Davies, W.E.","contributorId":12440,"corporation":false,"usgs":true,"family":"Davies","given":"W.E.","email":"","affiliations":[],"preferred":false,"id":684745,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Morgan, I.M.","contributorId":11304,"corporation":false,"usgs":true,"family":"Morgan","given":"I.M.","email":"","affiliations":[],"preferred":false,"id":684746,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70214413,"text":"70214413 - 2000 - Ecogeochemistry of the subsurface food web at pH 0–2.5 in Iron Mountain, California, U.S.A.","interactions":[],"lastModifiedDate":"2020-09-25T19:23:33.065411","indexId":"70214413","displayToPublicDate":"2000-09-25T14:13:40","publicationYear":"2000","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1919,"text":"Hydrobiologia","onlineIssn":"1573-5117","printIssn":"0018-8158","active":true,"publicationSubtype":{"id":10}},"title":"Ecogeochemistry of the subsurface food web at pH 0–2.5 in Iron Mountain, California, U.S.A.","docAbstract":"Pyrite oxidation in the underground mining environment of Iron Mountain, California, has created the most acidic pH values ever reported in aquatic systems. Sulfate values as high as 120 000 mg l−1 and iron as high as 27 600 mg l−1 have been measured in the mine water, which also carries abundant other dissolved metals including Al, Zn, Cu, Cd, Mn, Sb and Pb. Extreme acidity and high metal concentrations apparently do not preclude the presence of an underground acidophilic food web, which has developed with bacterial biomass at the base and heliozoans as top predators. Slimes, oil-like films, flexible and inflexible stalactites, sediments, water and precipitates were found to have distinctive communities. A variety of filamentous and non-filamentous bacteria grew in slimes in water having pH values <1.0. Fungal hyphae colonize stalactites dripping pH 1.0 water; they may help to form these drip structures. Motile hypotrichous ciliates and bdelloid rotifers are particularly abundant in slimes having a pH of 1.5. Holdfasts of the iron bacterium Leptothrix discophora attach to biofilms covering pools of standing water having a pH of 2.5 in the mine. The mine is not a closed environment – people, forced air flow and massive flushing during high intensity rainfall provide intermittent contact between the surface and underground habitats, so the mine ecosystem probably is not a restricted one.
In a recent article (Eos, Trans., AGU, February 8, 2000, p.55), Leatherman et al. [2000] state that they have confirmed an association between sea-level rise and coastal erosion. Applying their results to the New Jersey, Delaware, and Maryland coasts and using a projected sea-level rise, the authors predict that by 2050 the shoreline will recede 60 m, about two times the average beach width.
\nHowever, Leatherman et al. [2000] have not convincingly quantified a relationship between sea-level rise and shoreline erosion.We do not agree with their rationale for subsetting their data, and they have not considered other explanations for a background erosion along the U.S. east coast. Furthermore, their future projections are not supported by their analyses.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/EO081i038p00436-02","usgsCitation":"Sallenger, Morton, R., Fletcher, C., Thieler, E.R., and Howd, P., 2000, Comment on “Sea level rise shown to drive coastal erosion”: Eos, Transactions, American Geophysical Union, v. 81, no. 38, p. 436-436, https://doi.org/10.1029/EO081i038p00436-02.","productDescription":"1 p.","startPage":"436","endPage":"436","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":479115,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/eo081i038p00436-02","text":"Publisher Index Page"},{"id":282120,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -94.31,28.11 ], [ -94.31,42.16 ], [ -71.15,42.16 ], [ -71.15,28.11 ], [ -94.31,28.11 ] ] ] } } ] }","volume":"81","issue":"38","noUsgsAuthors":false,"publicationDate":"2011-06-03","publicationStatus":"PW","scienceBaseUri":"53cd51dde4b0b290850f42b0","contributors":{"authors":[{"text":"Sallenger, Jr.","contributorId":105768,"corporation":false,"usgs":true,"family":"Sallenger","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":490063,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Morton, Robert","contributorId":49701,"corporation":false,"usgs":true,"family":"Morton","given":"Robert","affiliations":[],"preferred":false,"id":490061,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fletcher, Charles","contributorId":66170,"corporation":false,"usgs":true,"family":"Fletcher","given":"Charles","affiliations":[],"preferred":false,"id":490062,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Thieler, E. Robert 0000-0003-4311-9717 rthieler@usgs.gov","orcid":"https://orcid.org/0000-0003-4311-9717","contributorId":2488,"corporation":false,"usgs":true,"family":"Thieler","given":"E.","email":"rthieler@usgs.gov","middleInitial":"Robert","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":490059,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Howd, Peter","contributorId":24656,"corporation":false,"usgs":true,"family":"Howd","given":"Peter","affiliations":[],"preferred":false,"id":490060,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70126200,"text":"70126200 - 2000 - Mercury in Long Island Sound sediments","interactions":[],"lastModifiedDate":"2017-11-18T12:27:42","indexId":"70126200","displayToPublicDate":"2000-09-19T11:54:00","publicationYear":"2000","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2220,"text":"Journal of Coastal Research","active":true,"publicationSubtype":{"id":10}},"title":"Mercury in Long Island Sound sediments","docAbstract":"Mercury (Hg) concentrations were measured in 394 surface and core samples from Long Island Sound (LIS). The surface sediment Hg concentration data show a wide spread, ranging from <50 ppb Hg in eastern LIS to >600 ppb Hg in westernmost LIS. Part of the observed range is related to variations in the bottom sedimentary environments, with higher Hg concentrations in the muddy depositional areas of central and western LIS. A strong residual trend of higher Hg values to the west remains when the data are normalized to grain size. Relationships between a tracer for sewage effluents (C. perfringens) and Hg concentrations indicate that between 0-50 % of the Hg is derived from sewage sources for most samples from the western and central basins. A higher percentage of sewage-derived Hg is found in samples from the westernmost section of LIS and in some local spots near urban centers. The remainder of the Hg is carried into the Sound with contaminated sediments from the watersheds and a small fraction enters the Sound as in situ atmospheric deposition. The Hg-depth profiles of several cores have well-defined contamination profiles that extend to pre-industrial background values. These data indicate that the Hg levels in the Sound have increased by a factor of 5-6 over the last few centuries, but Hg levels in LIS sediments have declined in modern times by up to 30 %. The concentrations of C. perfringens increased exponentially in the top core sections which had declining Hg concentrations, suggesting a recent decline in Hg fluxes that are unrelated to sewage effluents. The observed spatial and historical trends show Hg fluxes to LIS from sewage effluents, contaminated sediment input from the Connecticut River, point source inputs of strongly contaminated sediment from the Housatonic River, variations in the abundance of Hg carrier phases such as TOC and Fe, and focusing of sediment-bound Hg in association with westward sediment transport within the Sound.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Coastal Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Coastal Education and Research Foundation","usgsCitation":"Varekamp, J., Buchholtz ten Brink, M.R., Mecray, E., and Kreulen, B., 2000, Mercury in Long Island Sound sediments: Journal of Coastal Research, v. 16, no. 3, p. 613-626.","productDescription":"14 p.","startPage":"613","endPage":"626","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":294220,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":294219,"type":{"id":15,"text":"Index Page"},"url":"https://www.jstor.org/stable/4300074"}],"country":"United States","state":"Connecticut;New York","otherGeospatial":"Long Island Sound","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -73.827,40.7578 ], [ -73.827,41.3293 ], [ -72.0244,41.3293 ], [ -72.0244,40.7578 ], [ -73.827,40.7578 ] ] ] } } ] }","volume":"16","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"541d459ee4b0f68901ec30c1","contributors":{"authors":[{"text":"Varekamp, J.C.","contributorId":56006,"corporation":false,"usgs":true,"family":"Varekamp","given":"J.C.","email":"","affiliations":[],"preferred":false,"id":501915,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Buchholtz ten Brink, Marilyn R.","contributorId":88021,"corporation":false,"usgs":true,"family":"Buchholtz ten Brink","given":"Marilyn","email":"","middleInitial":"R.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":501917,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mecray, E.I.","contributorId":81814,"corporation":false,"usgs":true,"family":"Mecray","given":"E.I.","email":"","affiliations":[],"preferred":false,"id":501916,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kreulen, B.","contributorId":48741,"corporation":false,"usgs":true,"family":"Kreulen","given":"B.","email":"","affiliations":[],"preferred":false,"id":501914,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70126197,"text":"70126197 - 2000 - Late-stage development of the Bryant Canyon turbidite pathway on the Louisiana continental slope","interactions":[],"lastModifiedDate":"2017-09-20T15:49:51","indexId":"70126197","displayToPublicDate":"2000-09-19T11:24:00","publicationYear":"2000","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Late-stage development of the Bryant Canyon turbidite pathway on the Louisiana continental slope","docAbstract":"GLORIA sidescan imagery, multibeam bathymetry, seismic profiles, and piston cores (3–5 m penetration) reveal the near-surface geology of the Bryant Canyon turbidite pathway on the continental margin of Louisiana. This pathway extends from the continental shelf edge, across the continental slope, to a deep-sea fan on the continental rise. The pathway is narrow (<2 km) where it crosses shallow salt deposits. Turbidites have been sampled from these narrow segments, and radiocarbon dates indicate that some of them accumulated as recently as 10,150 yr B.P. The pathway broadens however, where it crosses mini-basins whose floors are covered largely by muddy mass-transport deposits and coarse silt turbidites. Mass-transport deposits in the upper 4.7 m of cores from the floors of mini-basins accumulated 18,140-3,400 yr. BP. Seismic profiles show that the mass-transport deposits in some of the mini-basins are as much as 225 milliseconds thick and that turbidites in the basin floor are buried by these deposits. Salt movement has had a major impact on this pathway, and its thalweg no longer has a continuous down-slope gradient. Some mini-basin floors along the pathway are now more than 500 m deeper than their basin’s spill point. We propose a 6-stage conceptual model to explain our observations for the evolution of a mini-basin along this turbidite pathway. In this model, an active channel feeds sand to a mini-basin (Stabe B). Once the mini-basin is filled, the sand deposit is entrenched by a bypass channel (Stage C). When the turbidite system shuts off, salt migration oversteepens the mini-basin walls (Stage D) which collapse and create a layer of mass-transport deposits on the mini-basin floor (Stage E). The depositional succession is capped by a layer of highstand hemipelagic drape (Stage F). The Bryant Canyon turbidite pathway provides a recent example of a large turbidite pathway in the Gulf of Mexico that crosses an area of active salt tectonics thus providing a conceptual model for older systems in similar settings. In Bryant Canyon, thick turbidite sands presumably are found in mini-basins however, they are sealed by thick, fine-grained, mass-transport deposits which terminate mini-basin turbidite deposition cycles. The importance of mass-transport deposits in basins along this turbidite pathway is in startling contrast to the Trinity-Brazos pathway whose shallow subsurface expression is virtually free of mass-transport deposits and has undergone minimal deformation by salt movement.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Deep-water reservoirs of the world : Gulf Coast Section Society of Economic Paleontologists and Mineralogists Foundation, 20th annual Bob F. Perkins Research Conference, December 3-6, 2000, Houston, Texas","largerWorkSubtype":{"id":12,"text":"Conference publication"},"language":"English","publisher":"Write Enterprise","usgsCitation":"Twichell, D.C., Nelson, H., and Damuth, J.E., 2000, Late-stage development of the Bryant Canyon turbidite pathway on the Louisiana continental slope, in Deep-water reservoirs of the world : Gulf Coast Section Society of Economic Paleontologists and Mineralogists Foundation, 20th annual Bob F. Perkins Research Conference, December 3-6, 2000, Houston, Texas, p. 1032-1044.","productDescription":"13 p.","startPage":"1032","endPage":"1044","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":294216,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"541d459de4b0f68901ec30ba","contributors":{"authors":[{"text":"Twichell, David C.","contributorId":37730,"corporation":false,"usgs":true,"family":"Twichell","given":"David","email":"","middleInitial":"C.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":501909,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nelson, Hans","contributorId":46942,"corporation":false,"usgs":true,"family":"Nelson","given":"Hans","email":"","affiliations":[],"preferred":false,"id":501910,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Damuth, John E.","contributorId":11963,"corporation":false,"usgs":true,"family":"Damuth","given":"John","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":501908,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ]}