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","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Methods of soil analysis, part 4, physical methods","language":"English","publisher":"Soil Science Society of America","publisherLocation":"Madison, Wisconsin","usgsCitation":"Nimmo, J.R., and Perkins, K., 2002, Aggregate stability and size distribution, chap. of Methods of soil analysis, part 4, physical methods, p. 317-328.","productDescription":"12 p.","startPage":"317","endPage":"328","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":356768,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5b98d10be4b0702d0e847246","contributors":{"editors":[{"text":"Dane, Jacob H.","contributorId":91371,"corporation":false,"usgs":false,"family":"Dane","given":"Jacob","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":743500,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Topp, G. Clarke","contributorId":92664,"corporation":false,"usgs":false,"family":"Topp","given":"G.","email":"","middleInitial":"Clarke","affiliations":[],"preferred":false,"id":743501,"contributorType":{"id":2,"text":"Editors"},"rank":2}],"authors":[{"text":"Nimmo, John R. 0000-0001-8191-1727 jrnimmo@usgs.gov","orcid":"https://orcid.org/0000-0001-8191-1727","contributorId":757,"corporation":false,"usgs":true,"family":"Nimmo","given":"John","email":"jrnimmo@usgs.gov","middleInitial":"R.","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":743498,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Perkins, K.","contributorId":73019,"corporation":false,"usgs":true,"family":"Perkins","given":"K.","email":"","affiliations":[],"preferred":false,"id":743499,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70198938,"text":"70198938 - 2002 - Steady-state centrifuge [simultaneous determination of water transmission and retention properties--direct methods--laboratory]","interactions":[],"lastModifiedDate":"2018-08-27T08:41:36","indexId":"70198938","displayToPublicDate":"2002-01-01T08:38:42","publicationYear":"2002","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Steady-state centrifuge [simultaneous determination of water transmission and retention properties--direct methods--laboratory]","docAbstract":"No abstract available.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Methods of soil analysis, part 4, physical methods","language":"English","publisher":"Soil Science Society of America","publisherLocation":"Madison, Wisconsin ","usgsCitation":"Nimmo, J.R., Perkins, K., and Lewis, A.M., 2002, Steady-state centrifuge [simultaneous determination of water transmission and retention properties--direct methods--laboratory], chap. of Methods of soil analysis, part 4, physical methods, p. 903-916.","productDescription":"14 p.","startPage":"903","endPage":"916","costCenters":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":356767,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5b98d10be4b0702d0e847248","contributors":{"authors":[{"text":"Nimmo, John R. 0000-0001-8191-1727 jrnimmo@usgs.gov","orcid":"https://orcid.org/0000-0001-8191-1727","contributorId":757,"corporation":false,"usgs":true,"family":"Nimmo","given":"John","email":"jrnimmo@usgs.gov","middleInitial":"R.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":743495,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Perkins, K.","contributorId":73019,"corporation":false,"usgs":true,"family":"Perkins","given":"K.","email":"","affiliations":[],"preferred":false,"id":743496,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lewis, A. M.","contributorId":207307,"corporation":false,"usgs":false,"family":"Lewis","given":"A.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":743497,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70199893,"text":"70199893 - 2002 - Property-transfer models","interactions":[],"lastModifiedDate":"2018-10-03T07:53:15","indexId":"70199893","displayToPublicDate":"2002-01-01T07:50:22","publicationYear":"2002","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Property-transfer models","docAbstract":"No abstract available.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Methods in soil analysis: Part 4 physical methods","language":"English","publisher":"Soil Science Society of America","publisherLocation":"Madison, Wisconsin","usgsCitation":"Haverkamp, R., Nimmo, J.R., and Reggiani, P., 2002, Property-transfer models, chap. of Methods in soil analysis: Part 4 physical methods, p. 759-761.","productDescription":"3 p.","startPage":"759","endPage":"761","costCenters":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":358049,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5c10f1cfe4b034bf6a80616f","contributors":{"authors":[{"text":"Haverkamp, R.","contributorId":208423,"corporation":false,"usgs":false,"family":"Haverkamp","given":"R.","email":"","affiliations":[],"preferred":false,"id":747154,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nimmo, John R. 0000-0001-8191-1727 jrnimmo@usgs.gov","orcid":"https://orcid.org/0000-0001-8191-1727","contributorId":757,"corporation":false,"usgs":true,"family":"Nimmo","given":"John","email":"jrnimmo@usgs.gov","middleInitial":"R.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":747155,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Reggiani, P.","contributorId":208424,"corporation":false,"usgs":false,"family":"Reggiani","given":"P.","email":"","affiliations":[],"preferred":false,"id":747156,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70199892,"text":"70199892 - 2002 - Controlled liquid-volume [water retention and storage]","interactions":[],"lastModifiedDate":"2018-10-03T07:48:13","indexId":"70199892","displayToPublicDate":"2002-01-01T07:47:25","publicationYear":"2002","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Controlled liquid-volume [water retention and storage]","docAbstract":"No abstract available.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Methods of soil analysis: Part 4 physical methods","language":"English","publisher":"Soil Science Society of America","publisherLocation":"Madison, Wisconsin ","usgsCitation":"Winfield, K., and Nimmo, J.R., 2002, Controlled liquid-volume [water retention and storage], chap. of Methods of soil analysis: Part 4 physical methods, 10 p.","productDescription":"10 p.","costCenters":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":358048,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5c10f1cfe4b034bf6a806171","contributors":{"authors":[{"text":"Winfield, K.A.","contributorId":85396,"corporation":false,"usgs":true,"family":"Winfield","given":"K.A.","email":"","affiliations":[],"preferred":false,"id":747152,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nimmo, John R. 0000-0001-8191-1727 jrnimmo@usgs.gov","orcid":"https://orcid.org/0000-0001-8191-1727","contributorId":757,"corporation":false,"usgs":true,"family":"Nimmo","given":"John","email":"jrnimmo@usgs.gov","middleInitial":"R.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":747153,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70199891,"text":"70199891 - 2002 - Miscellaneous methods [water retention and storage]","interactions":[],"lastModifiedDate":"2018-10-03T07:43:54","indexId":"70199891","displayToPublicDate":"2002-01-01T07:42:46","publicationYear":"2002","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Miscellaneous methods [water retention and storage]","docAbstract":"No abstract available.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Methods in soil analysis: Part 4 physical methods","language":"English","publisher":"Soil Science Society of America","publisherLocation":"Madison, Wisconsin","usgsCitation":"Nimmo, J.R., and Winfield, K., 2002, Miscellaneous methods [water retention and storage], chap. of Methods in soil analysis: Part 4 physical methods, 9 p.","productDescription":"9 p.","costCenters":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":358047,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5c10f1cfe4b034bf6a806173","contributors":{"authors":[{"text":"Nimmo, John R. 0000-0001-8191-1727 jrnimmo@usgs.gov","orcid":"https://orcid.org/0000-0001-8191-1727","contributorId":757,"corporation":false,"usgs":true,"family":"Nimmo","given":"John","email":"jrnimmo@usgs.gov","middleInitial":"R.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":747150,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Winfield, K.A.","contributorId":85396,"corporation":false,"usgs":true,"family":"Winfield","given":"K.A.","email":"","affiliations":[],"preferred":false,"id":747151,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70199889,"text":"70199889 - 2002 - Guidelines for method selection (water retention and storage)","interactions":[],"lastModifiedDate":"2018-10-03T07:31:53","indexId":"70199889","displayToPublicDate":"2002-01-01T07:28:34","publicationYear":"2002","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Guidelines for method selection (water retention and storage)","docAbstract":"No abstract available.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Methods of soil analysis: Part 4 physical methods","language":"English","publisher":"Soil Science Society of America","publisherLocation":"Madison, Wisconsin","usgsCitation":"Nimmo, J.R., 2002, Guidelines for method selection (water retention and storage), chap. of Methods of soil analysis: Part 4 physical methods, p. 716-720.","productDescription":"5 p.","startPage":"716","endPage":"720","costCenters":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":358045,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5c10f1cfe4b034bf6a806175","contributors":{"authors":[{"text":"Nimmo, John R. 0000-0001-8191-1727 jrnimmo@usgs.gov","orcid":"https://orcid.org/0000-0001-8191-1727","contributorId":757,"corporation":false,"usgs":true,"family":"Nimmo","given":"John","email":"jrnimmo@usgs.gov","middleInitial":"R.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":747148,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70195468,"text":"70195468 - 2002 - Geology and land use in the western part of the Gulf Coast coal-bearing region","interactions":[],"lastModifiedDate":"2018-02-16T11:10:01","indexId":"70195468","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":2,"text":"State or Local Government Series"},"seriesTitle":{"id":5632,"text":"Bureau of Economic Geology (Texas), Miscellaneous Maps","active":true,"publicationSubtype":{"id":2}},"seriesNumber":"MM0041","title":"Geology and land use in the western part of the Gulf Coast coal-bearing region","docAbstract":"This map series is a compilation of the outcrop geology in the U.S. Gulf Coast coal region. The maps show the regional geologic setting for primary coal occurrences and detailed geology and historic mining areas.
The CD contains ESRI ArcView SHP files of cities, urban areas, historical mines (points and polygons), counties, current mines, 1:100,000 quadrangle outlines of the study area, fossil fuel powerplants, nuclear powerplants, political boundaries, federally managed lands, roads and railroads in the study area, hydrology in the study area (polygons and arcs), geology nomenclature breaks, geological features (faults), and geology. ArcExplorer is included on the CD.
","language":"English","publisher":"Co-published by the Bureau of Economic Geology (Texas) and the U.S. Geological Survey","usgsCitation":"2002, Geology and land use in the western part of the Gulf Coast coal-bearing region: Bureau of Economic Geology (Texas), Miscellaneous Maps MM0041, CD-ROM.","productDescription":"CD-ROM","costCenters":[],"links":[{"id":351701,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":351700,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://store.beg.utexas.edu/miscellaneous-maps-charts-and-sections/795-mm0041.html"}],"scale":"500000","otherGeospatial":"Gulf coast","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5aff0ba0e4b0da30c1bfcfad","contributors":{"compilers":[{"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":728734,"contributorType":{"id":3,"text":"Compilers"},"rank":1},{"text":"Aubourg, C.E.","contributorId":38187,"corporation":false,"usgs":true,"family":"Aubourg","given":"C.E.","affiliations":[],"preferred":false,"id":728735,"contributorType":{"id":3,"text":"Compilers"},"rank":2},{"text":"Hook, R.W.","contributorId":61584,"corporation":false,"usgs":true,"family":"Hook","given":"R.W.","email":"","affiliations":[],"preferred":false,"id":728736,"contributorType":{"id":3,"text":"Compilers"},"rank":3},{"text":"SanFilipo, John R. 0000-0002-8739-5628 jsan@usgs.gov","orcid":"https://orcid.org/0000-0002-8739-5628","contributorId":2385,"corporation":false,"usgs":true,"family":"SanFilipo","given":"John R.","email":"jsan@usgs.gov","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":728737,"contributorType":{"id":3,"text":"Compilers"},"rank":4}]}} ,{"id":70185170,"text":"70185170 - 2002 - A review of bacterial methyl halide degradation: Biochemistry, genetics and molecular ecology","interactions":[],"lastModifiedDate":"2018-11-26T09:25:52","indexId":"70185170","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1548,"text":"Environmental Microbiology","active":true,"publicationSubtype":{"id":10}},"title":"A review of bacterial methyl halide degradation: Biochemistry, genetics and molecular ecology","docAbstract":"Methyl halide‐degrading bacteria are a diverse group of organisms that are found in both terrestrial and marine environments. They potentially play an important role in mitigating ozone depletion resulting from methyl chloride and methyl bromide emissions. The first step in the pathway(s) of methyl halide degradation involves a methyltransferase and, recently, the presence of this pathway has been studied in a number of bacteria. This paper reviews the biochemistry and genetics of methyl halide utilization in the aerobic bacteria Methylobacterium chloromethanicum CM4T, Hyphomicrobium chloromethanicumCM2T, Aminobacter strain IMB‐1 and Aminobacter strain CC495. These bacteria are able to use methyl halides as a sole source of carbon and energy, are all members of the α‐Proteobacteria and were isolated from a variety of polluted and pristine terrestrial environments. An understanding of the genetics of these bacteria identified a unique gene (cmuA) involved in the degradation of methyl halides, which codes for a protein (CmuA) with unique methyltransferase and corrinoid functions. This unique functional gene, cmuA, is being used to develop molecular ecology techniques to examine the diversity and distribution of methyl halide‐utilizing bacteria in the environment and hopefully to understand their role in methyl halide degradation in different environments. These techniques will also enable the detection of potentially novel methyl halide‐degrading bacteria.
We report a novel method for measurement of the oxygen isotopic composition (18O/16O) of nitrate (NO3-) from both seawater and freshwater. The denitrifier method, based on the isotope ratio analysis of nitrous oxide generated from sample nitrate by cultured denitrifying bacteria, has been described elsewhere for its use in nitrogen isotope ratio (15N/14N) analysis of nitrate.1Here, we address the additional issues associated with 18O/16O analysis of nitrate by this approach, which include (1) the oxygen isotopic difference between the nitrate sample and the N2O analyte due to isotopic fractionation associated with the loss of oxygen atoms from nitrate and (2) the exchange of oxygen atoms with water during the conversion of nitrate to N2O. Experiments with 18O-labeled water indicate that water exchange contributes less than 10%, and frequently less than 3%, of the oxygen atoms in the N2O product for Pseudomonas aureofaciens. In addition, both oxygen isotope fractionation and oxygen atom exchange are consistent within a given batch of analyses. The analysis of appropriate isotopic reference materials can thus be used to correct the measured 18O/16O ratios of samples for both effects. This is the first method tested for 18O/16O analysis of nitrate in seawater. Benefits of this method, relative to published freshwater methods, include higher sensitivity (tested down to 10 nmol and 1 μM NO3-), lack of interference by other solutes, and ease of sample preparation.
","language":"English","publisher":"American Chemical Society","doi":"10.1021/ac020113w","usgsCitation":"Casciotti, K., Sigman, D., Hastings, M.G., Böhlke, J., and Hilkert, A., 2002, Measurement of the oxygen isotopic composition of nitrate in seawater and freshwater using the denitrifier method: Analytical Chemistry, v. 74, no. 19, p. 4905-4912, https://doi.org/10.1021/ac020113w.","productDescription":"8 p.","startPage":"4905","endPage":"4912","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":337620,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"74","issue":"19","noUsgsAuthors":false,"publicationDate":"2002-09-07","publicationStatus":"PW","scienceBaseUri":"58ca52d6e4b0849ce97c8718","contributors":{"authors":[{"text":"Casciotti, K.L.","contributorId":57653,"corporation":false,"usgs":true,"family":"Casciotti","given":"K.L.","affiliations":[],"preferred":false,"id":684489,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sigman, D.M.","contributorId":189317,"corporation":false,"usgs":false,"family":"Sigman","given":"D.M.","email":"","affiliations":[],"preferred":false,"id":684490,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hastings, M. Galanter","contributorId":189318,"corporation":false,"usgs":false,"family":"Hastings","given":"M.","email":"","middleInitial":"Galanter","affiliations":[],"preferred":false,"id":684491,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Böhlke, J. K. 0000-0001-5693-6455","orcid":"https://orcid.org/0000-0001-5693-6455","contributorId":173577,"corporation":false,"usgs":true,"family":"Böhlke","given":"J. K.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":false,"id":684492,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hilkert, A.","contributorId":189319,"corporation":false,"usgs":false,"family":"Hilkert","given":"A.","affiliations":[],"preferred":false,"id":684493,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70024986,"text":"70024986 - 2002 - Archiving, processing, and disseminating ASTER products at the USGS EROS Data Center","interactions":[],"lastModifiedDate":"2024-09-19T14:30:42.960428","indexId":"70024986","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Archiving, processing, and disseminating ASTER products at the USGS EROS Data Center","docAbstract":"The U.S. Geological Survey EROS Data Center archives, processes, and disseminates Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) data products. The ASTER instrument is one of five sensors onboard the Earth Observing System's Terra satellite launched December 18, 1999. ASTER collects broad spectral coverage with high spatial resolution at near infrared, shortwave infrared, and thermal infrared wavelengths with ground resolutions of 15, 30, and 90 meters, respectively. The ASTER data are used in many ways to understand local and regional earth-surface processes. Applications include land-surface climatology, volcanology, hazards monitoring, geology, agronomy, land cover change, and hydrology. The ASTER data are available for purchase from the ASTER Ground Data System in Japan and from the Land Processes Distributed Active Archive Center in the United States, which receives level 1A and level 1B data from Japan on a routine basis. These products are archived and made available to the public within 48 hours of receipt. The level 1A and level 1B data are used to generate higher level products that include routine and on-demand decorrelation stretch, brightness temperature at the sensor, emissivity, surface reflectance, surface kinetic temperature, surface radiance, polar surface and cloud classification, and digital elevation models. This paper describes the processes and procedures used to archive, process, and disseminate standard and on-demand higher level ASTER products at the Land Processes Distributed Active Archive Center.","conferenceTitle":"Earth Observing Systems VII","conferenceDate":"July 7-10, 2002","conferenceLocation":"Seattle, WA","language":"English","publisher":"SPIE","doi":"10.1117/12.451575","issn":"0277786X","usgsCitation":"Jones, B., and Tolk, B.L., 2002, Archiving, processing, and disseminating ASTER products at the USGS EROS Data Center, Earth Observing Systems VII, v. 4814, Seattle, WA, July 7-10, 2002, p. 402-413, https://doi.org/10.1117/12.451575.","productDescription":"12 p.","startPage":"402","endPage":"413","numberOfPages":"12","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":233333,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"4814","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ed51e4b0c8380cd49729","contributors":{"editors":[{"text":"Barnes W.L.","contributorId":128354,"corporation":true,"usgs":false,"organization":"Barnes W.L.","id":536543,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Jones, Brenda 0000-0003-4941-5349 bkjones@usgs.gov","orcid":"https://orcid.org/0000-0003-4941-5349","contributorId":2994,"corporation":false,"usgs":true,"family":"Jones","given":"Brenda","email":"bkjones@usgs.gov","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true},{"id":423,"text":"National Geospatial Program","active":true,"usgs":true}],"preferred":true,"id":403349,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Tolk, Brian L. 0000-0002-9060-0266 tolk@usgs.gov","orcid":"https://orcid.org/0000-0002-9060-0266","contributorId":2992,"corporation":false,"usgs":true,"family":"Tolk","given":"Brian","email":"tolk@usgs.gov","middleInitial":"L.","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":true,"id":403350,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70185134,"text":"70185134 - 2002 - Mobilization of natural colloids from an iron oxide-coated sand aquifer: Effect of pH and ionic strength","interactions":[],"lastModifiedDate":"2018-11-28T08:45:25","indexId":"70185134","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Mobilization of natural colloids from an iron oxide-coated sand aquifer: Effect of pH and ionic strength","docAbstract":"Field and laboratory column experiments were performed to assess the effect of elevated pH and reduced ionic strength on the mobilization of natural colloids in a ferric oxyhydroxide-coated aquifer sediment. The field experiments were conducted as natural gradient injections of groundwater amended by sodium hydroxide additions. The laboratory experiments were conducted in columns of undisturbed, oriented sediments and disturbed, disoriented sediments. In the field, the breakthrough of released colloids coincided with the pH pulse breakthrough and lagged the bromide tracer breakthrough. The breakthrough behavior suggested that the progress of the elevated pH front controlled the transport of the mobilized colloids. In the laboratory, about twice as much colloid release occurred in the disturbed sediments as in the undisturbed sediments. The field and laboratory experiments both showed that the total mass of colloid release increased with increasing pH until the concurrent increase in ionic strength limited release. A decrease in ionic strength did not mobilize significant amounts of colloids in the field. The amount of colloids released normalized to the mass of the sediments was similar for the field and the undisturbed laboratory experiments.
","language":"English","publisher":"American Chemical Society","doi":"10.1021/es0109141","usgsCitation":"Bunn, R.A., Magelky, R.D., Ryan, J.N., and Elimelech, M., 2002, Mobilization of natural colloids from an iron oxide-coated sand aquifer: Effect of pH and ionic strength: Environmental Science & Technology, v. 36, no. 3, p. 314-322, https://doi.org/10.1021/es0109141.","productDescription":"9 p. ","startPage":"314","endPage":"322","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":337614,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"36","issue":"3","noUsgsAuthors":false,"publicationDate":"2002-01-04","publicationStatus":"PW","scienceBaseUri":"58ca52d6e4b0849ce97c871a","contributors":{"authors":[{"text":"Bunn, Rebecca A.","contributorId":189311,"corporation":false,"usgs":false,"family":"Bunn","given":"Rebecca","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":684477,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Magelky, Robin D.","contributorId":189313,"corporation":false,"usgs":false,"family":"Magelky","given":"Robin","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":684478,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ryan, Joseph N.","contributorId":54290,"corporation":false,"usgs":false,"family":"Ryan","given":"Joseph","email":"","middleInitial":"N.","affiliations":[{"id":604,"text":"University of Colorado- Boulder","active":false,"usgs":true}],"preferred":false,"id":684479,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Elimelech, Menachem","contributorId":189312,"corporation":false,"usgs":false,"family":"Elimelech","given":"Menachem","email":"","affiliations":[],"preferred":false,"id":684480,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70185173,"text":"70185173 - 2002 - Determination of the total oxygen isotopic composition of nitrate and the calibration of a Δ17Ο nitrate reference material","interactions":[],"lastModifiedDate":"2020-01-04T13:58:21","indexId":"70185173","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":761,"text":"Analytical Chemistry","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Determination of the total oxygen isotopic composition of nitrate and the calibration of a Δ17Ο nitrate reference material","title":"Determination of the total oxygen isotopic composition of nitrate and the calibration of a Δ17Ο nitrate reference material","docAbstract":"A thermal decomposition method was developed and tested for the simultaneous determination of δ18O and δ17Ο in nitrate. The thermal decomposition of AgNO3 allows for the rapid and accurate determination of 18O/16O and 17O/16O isotopic ratios with a precision of ±1.5‰ for δ18O and ±0.11‰ for Δ17Ο (Δ17Ο = δ17Ο − 0.52 × δ18O). The international nitrate isotope reference material IAEA-NO3 yielded a δ18O value of +23.6‰ and Δ17Ο of −0.2‰, consistent with normal terrestrial mass-dependent isotopic ratios. In contrast, a large sample of NaNO3 from the Atacama Desert, Chile, was found to have Δ17Ο = 21.56 ± 0.11‰ and δ18O = 54.9 ± 1.5‰, demonstrating a substantial mass-independent isotopic composition consistent with the proposed atmospheric origin of the desert nitrate. It is suggested that this sample (designated USGS-35) can be used to generate other gases (CO2, CO, N2O, O2) with the same Δ17Ο to serve as measurement references for a variety of applications involving mass-independent isotopic compositions in environmental studies.
","language":"English","publisher":"American Chemical Society","doi":"10.1021/ac0256282","usgsCitation":"Michalski, G., Savarino, J., Böhlke, J., and Thiemens, M., 2002, Determination of the total oxygen isotopic composition of nitrate and the calibration of a Δ17Ο nitrate reference material: Analytical Chemistry, v. 74, no. 19, p. 4989-4993, https://doi.org/10.1021/ac0256282.","productDescription":"5 p.","startPage":"4989","endPage":"4993","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":337678,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"74","issue":"19","noUsgsAuthors":false,"publicationDate":"2002-09-04","publicationStatus":"PW","scienceBaseUri":"58ca52d5e4b0849ce97c8708","contributors":{"authors":[{"text":"Michalski, Greg","contributorId":187898,"corporation":false,"usgs":false,"family":"Michalski","given":"Greg","email":"","affiliations":[{"id":28086,"text":"University of California San Diego","active":true,"usgs":false}],"preferred":false,"id":684607,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Savarino, Joel","contributorId":189366,"corporation":false,"usgs":false,"family":"Savarino","given":"Joel","email":"","affiliations":[],"preferred":false,"id":684608,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Böhlke, J.K. 0000-0001-5693-6455","orcid":"https://orcid.org/0000-0001-5693-6455","contributorId":96696,"corporation":false,"usgs":true,"family":"Böhlke","given":"J.K.","affiliations":[],"preferred":false,"id":684609,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Thiemens, Mark","contributorId":187899,"corporation":false,"usgs":false,"family":"Thiemens","given":"Mark","email":"","affiliations":[{"id":28086,"text":"University of California San Diego","active":true,"usgs":false}],"preferred":false,"id":684610,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70185661,"text":"70185661 - 2002 - Distribution, production, and ecophysiology of Picocystis strain ML in Mono Lake, California","interactions":[],"lastModifiedDate":"2020-01-04T13:57:24","indexId":"70185661","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2620,"text":"Limnology and Oceanography","active":true,"publicationSubtype":{"id":10}},"title":"Distribution, production, and ecophysiology of Picocystis strain ML in Mono Lake, California","docAbstract":"A recently described unicellular chlorophytic alga isolated from meromictic Mono Lake, California, occupies a niche that spans two environments: the upper oxic mixolimnion and the deeper anoxic and highly reducing monimolimnion. This organism, Picocystis sp. strain ML, accounts for nearly 25% of the primary production during the winter bloom and more than 50% at other times of the year. In incubations, it is heavily grazed by the brine shrimp, Artemia monica. We assessed growth and photosynthetic parameters over broad ranges of irradiance, salinity, and pH and under oxic and anoxic conditions. Picocystis appears to be particularly adapted to low irradiance; we observed an order of magnitude increase in the cellular pigment concentrations, as well as marked increases in cellspecific photosynthetic parameters for cells acclimated to low-growth irradiance. Growth rates of 0.3–1.5 d21 were observed over a salinity range of 0–260‰ and a pH range of 4–12, with maximal growth at ;50 mmol photons m22 s21 , 40‰, and pH 6–10. Growth and oxygenic photosynthesis were observed under anoxic conditions at rates comparable to those measured under oxic conditions. The ability of the organism to acclimate and grow under such a broad range of environmental conditions makes it an important component of the Mono Lake ecosystem and likely contributes to its dominance of the monimolimnion/mixolimnion interface.
","language":"English","publisher":" American Society of Limnology and Oceanography, Inc.","usgsCitation":"Roesler, C.S., Culbertson, C.W., Etheridge, S.M., Goericke, R., Kiene, R.P., Miller, L., and Oremland, R.S., 2002, Distribution, production, and ecophysiology of Picocystis strain ML in Mono Lake, California: Limnology and Oceanography, v. 47, no. 2, p. 440-452.","productDescription":"13 p. ","startPage":"440","endPage":"452","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":338366,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Mono Lake ","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -119.13780212402344,\n 38.03132654864846\n ],\n [\n -119.16252136230467,\n 38.00536101289634\n ],\n [\n -119.12132263183595,\n 37.95719224376526\n ],\n [\n -118.99154663085936,\n 37.9241594356582\n ],\n [\n -118.88031005859375,\n 38.01131226070673\n ],\n [\n -118.92425537109375,\n 38.077284611299554\n ],\n [\n -119.0375518798828,\n 38.09241741843045\n ],\n [\n -119.11376953125,\n 38.036734877267705\n ],\n [\n -119.13780212402344,\n 38.03132654864846\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"47","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58da2539e4b0543bf7fda849","contributors":{"authors":[{"text":"Roesler, Collin S.","contributorId":152025,"corporation":false,"usgs":false,"family":"Roesler","given":"Collin","email":"","middleInitial":"S.","affiliations":[{"id":18855,"text":"Department of Earth and Oceanographic Science, Bowdoin College, Brunswick, ME","active":true,"usgs":false}],"preferred":false,"id":686263,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Culbertson, Charles W. cculbert@usgs.gov","contributorId":1607,"corporation":false,"usgs":true,"family":"Culbertson","given":"Charles","email":"cculbert@usgs.gov","middleInitial":"W.","affiliations":[{"id":371,"text":"Maine Water Science Center","active":true,"usgs":true}],"preferred":true,"id":686264,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Etheridge, Stacey M.","contributorId":189850,"corporation":false,"usgs":false,"family":"Etheridge","given":"Stacey","email":"","middleInitial":"M.","affiliations":[{"id":6619,"text":"University of Connecticutt","active":true,"usgs":false}],"preferred":false,"id":686265,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Goericke, Ralf","contributorId":189851,"corporation":false,"usgs":false,"family":"Goericke","given":"Ralf","email":"","affiliations":[{"id":16196,"text":"Scripps Institution of Oceanography, La Jolla, CA","active":true,"usgs":false}],"preferred":false,"id":686266,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kiene, Ronald P.","contributorId":173346,"corporation":false,"usgs":false,"family":"Kiene","given":"Ronald","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":686267,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Miller, Laurence G. 0000-0002-7807-3475 lgmiller@usgs.gov","orcid":"https://orcid.org/0000-0002-7807-3475","contributorId":2460,"corporation":false,"usgs":true,"family":"Miller","given":"Laurence G.","email":"lgmiller@usgs.gov","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":686268,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Oremland, Ronald S. 0000-0001-7382-0147 roremlan@usgs.gov","orcid":"https://orcid.org/0000-0001-7382-0147","contributorId":931,"corporation":false,"usgs":true,"family":"Oremland","given":"Ronald","email":"roremlan@usgs.gov","middleInitial":"S.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":686269,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70188326,"text":"70188326 - 2002 - Using spring-water chemistry to assess groundwater contamination and ages of shallow and deep ground water flow systems","interactions":[],"lastModifiedDate":"2017-06-06T11:20:05","indexId":"70188326","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Using spring-water chemistry to assess groundwater contamination and ages of shallow and deep ground water flow systems","docAbstract":"No abstract available.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Hydrology and biology of post-paleozoic carbonate aquifers, Karst Waters Institute Special Publication 7","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"Karst Waters Institute","usgsCitation":"Katz, B.G., Bohlke, J., and Hornsby, D., 2002, Using spring-water chemistry to assess groundwater contamination and ages of shallow and deep ground water flow systems, chap. of Hydrology and biology of post-paleozoic carbonate aquifers, Karst Waters Institute Special Publication 7, p. 76-78.","productDescription":"3 p.","startPage":"76","endPage":"78","costCenters":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"links":[{"id":342149,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":342148,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://karstwaters.org/publications/sp7-hydrology-and-biology-of-post-paleozoic-carbonate-aquifers/"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5937bf32e4b0f6c2d0d9c7c2","contributors":{"authors":[{"text":"Katz, B. G.","contributorId":115372,"corporation":false,"usgs":true,"family":"Katz","given":"B.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":697229,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bohlke, J.K. 0000-0001-5693-6455 jkbohlke@usgs.gov","orcid":"https://orcid.org/0000-0001-5693-6455","contributorId":191103,"corporation":false,"usgs":true,"family":"Bohlke","given":"J.K.","email":"jkbohlke@usgs.gov","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true},{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":697230,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hornsby, D.","contributorId":192642,"corporation":false,"usgs":false,"family":"Hornsby","given":"D.","email":"","affiliations":[],"preferred":false,"id":697231,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70185179,"text":"70185179 - 2002 - Field and laboratory investigations of inactivation of viruses (PRD1 and MS2) attached to iron oxide-coated quartz sand","interactions":[],"lastModifiedDate":"2018-11-26T09:46:11","indexId":"70185179","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Field and laboratory investigations of inactivation of viruses (PRD1 and MS2) attached to iron oxide-coated quartz sand","docAbstract":"Field and laboratory experiments were conducted to investigate inactivation of viruses attached to mineral surfaces. In a natural gradient transport field experiment, bacteriophage PRD1, radiolabeled with 32P, was injected into a ferric oxyhydroxide-coated sand aquifer with bromide and linear alkylbenzene sulfonates. In a zone of the aquifer contaminated by secondary sewage infiltration, small fractions of infective and 32P-labeled PRD1 broke through with the bromide tracer, followed by the slow release of 84% of the 32P activity and only 0.011% of the infective PRD1. In the laboratory experiments, the inactivation of PRD1, labeled with 35S (protein capsid), and MS2, dual radiolabeled with 35S (protein capsid) and 32P (nucleic acid), was monitored in the presence of groundwater and sediment from the contaminated zone of the field site. Release of infective viruses decreased at a much faster rate than release of the radiolabels, indicating that attached viruses were undergoing surface inactivation. Disparities between 32P and35S release suggest that the inactivated viruses were released in a disintegrated state. Comparison of estimated solution and surface inactivation rates indicates solution inactivation is ∼3 times as fast as surface inactivation. The actual rate of surface inactivation may be substantially underestimated owing to slow release of inactivated viruses.
","language":"English","publisher":"American Chemical Society","doi":"10.1021/es011285y","usgsCitation":"Ryan, J.N., Harvey, R.W., Metge, D.W., Elimelech, M., Navigato, T., and Pieper, A.P., 2002, Field and laboratory investigations of inactivation of viruses (PRD1 and MS2) attached to iron oxide-coated quartz sand: Environmental Science & Technology, v. 36, no. 11, p. 2403-2413, https://doi.org/10.1021/es011285y.","productDescription":"11 p. ","startPage":"2403","endPage":"2413","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":337684,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"36","issue":"11","noUsgsAuthors":false,"publicationDate":"2002-04-19","publicationStatus":"PW","scienceBaseUri":"58ca52d5e4b0849ce97c8702","contributors":{"authors":[{"text":"Ryan, Joseph N.","contributorId":54290,"corporation":false,"usgs":false,"family":"Ryan","given":"Joseph","email":"","middleInitial":"N.","affiliations":[{"id":604,"text":"University of Colorado- Boulder","active":false,"usgs":true}],"preferred":false,"id":684622,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Harvey, Ronald W. 0000-0002-2791-8503 rwharvey@usgs.gov","orcid":"https://orcid.org/0000-0002-2791-8503","contributorId":564,"corporation":false,"usgs":true,"family":"Harvey","given":"Ronald","email":"rwharvey@usgs.gov","middleInitial":"W.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":684623,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Metge, David W. dwmetge@usgs.gov","contributorId":663,"corporation":false,"usgs":true,"family":"Metge","given":"David","email":"dwmetge@usgs.gov","middleInitial":"W.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":684624,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Elimelech, Menachem","contributorId":189312,"corporation":false,"usgs":false,"family":"Elimelech","given":"Menachem","email":"","affiliations":[],"preferred":false,"id":684625,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Navigato, Theresa","contributorId":189370,"corporation":false,"usgs":false,"family":"Navigato","given":"Theresa","email":"","affiliations":[],"preferred":false,"id":684626,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Pieper, Ann P.","contributorId":189371,"corporation":false,"usgs":false,"family":"Pieper","given":"Ann","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":684627,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70185151,"text":"70185151 - 2002 - Field evidence for a protistan role in an organically-contaminated aquifer","interactions":[],"lastModifiedDate":"2017-08-26T14:10:24","indexId":"70185151","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Field evidence for a protistan role in an organically-contaminated aquifer","docAbstract":"The association between protists, bacteria, and dissolved organic carbon (DOC) in an oxygen-depleted, 6 km-long wastewater contaminant plume within a sandy aquifer (Cape Cod, MA) was investigated by comparing abundance patterns along longitudinal and vertical transects and at a control site. Strong linear correlations were observed between unattached bacterial abundance and DOC for much of the upgradient-half of the plume (0.1−2.5 km downgradient from the source) that is characterized by quasi-steady state chemistry. However, a logarithmic decrease was observed between the number of protists supported per mg of DOC and the estimated age of the DOC within the plume. The relatively labile dissolved organic contaminants that characterize the groundwater sampled from the plume ≤0.1 km downgradient from the contaminant source appeared to indirectly support 3−4 times as many protists (per mg of DOC) as the older, more recalcitrant DOC in the alkylbenzene sulfonate (ABS)-contaminated zone at 3 km downgradient (∼30 years travel time). Substantive numbers of protists (>104/cm3) were recovered from suboxic zones of the plume. The higher than expected ratios of protists to unattached bacteria (10 to 100:1) observed in much of the plume suggest that protists may be grazing upon both surface-associated and unattached bacterial communities to meet their nutritional requirements. In closed bottle incubation experiments, the presence of protists caused an increase in bacterial growth rate, which became more apparent at higher amendments of labile DOC (3−20 mgC/L). The presence of protists resulted in an increase in the apparent substrate saturation level for the unattached bacterial community, suggesting an important role for protists in the fate of more-labile aquifer organic contaminants.
","language":"English","publisher":"American Chemical Society","doi":"10.1021/es020611m","usgsCitation":"Kinner, N.E., Harvey, R.W., Shay, D.M., Metge, D.W., and Warren, A., 2002, Field evidence for a protistan role in an organically-contaminated aquifer: Environmental Science & Technology, v. 36, no. 20, p. 4312-4318, https://doi.org/10.1021/es020611m.","productDescription":"7 p. ","startPage":"4312","endPage":"4318","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":337635,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Massachusetts","otherGeospatial":"Cape Cod","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -70.609130859375,\n 41.580525125613846\n ],\n [\n -70.44296264648438,\n 41.580525125613846\n ],\n [\n -70.44296264648438,\n 41.72213058512578\n ],\n [\n -70.609130859375,\n 41.72213058512578\n ],\n [\n -70.609130859375,\n 41.580525125613846\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"36","issue":"20","noUsgsAuthors":false,"publicationDate":"2002-09-11","publicationStatus":"PW","scienceBaseUri":"58ca52d5e4b0849ce97c870e","contributors":{"authors":[{"text":"Kinner, Nancy E.","contributorId":189349,"corporation":false,"usgs":false,"family":"Kinner","given":"Nancy","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":684543,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Harvey, Ronald W. 0000-0002-2791-8503 rwharvey@usgs.gov","orcid":"https://orcid.org/0000-0002-2791-8503","contributorId":564,"corporation":false,"usgs":true,"family":"Harvey","given":"Ronald","email":"rwharvey@usgs.gov","middleInitial":"W.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":684544,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Shay, David M.","contributorId":189350,"corporation":false,"usgs":false,"family":"Shay","given":"David","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":684545,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Metge, David W. dwmetge@usgs.gov","contributorId":663,"corporation":false,"usgs":true,"family":"Metge","given":"David","email":"dwmetge@usgs.gov","middleInitial":"W.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":684546,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Warren, Alan","contributorId":189351,"corporation":false,"usgs":false,"family":"Warren","given":"Alan","email":"","affiliations":[],"preferred":false,"id":684547,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70185182,"text":"70185182 - 2002 - Atmospheric mercury deposition during the last 270 years: A glacial ice core record of natural and anthropogenic sources","interactions":[],"lastModifiedDate":"2018-11-28T08:24:55","indexId":"70185182","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Atmospheric mercury deposition during the last 270 years: A glacial ice core record of natural and anthropogenic sources","docAbstract":"Mercury (Hg) contamination of aquatic ecosystems and subsequent methylmercury bioaccumulation are significant environmental problems of global extent. At regional to global scales, the primary mechanism of Hg contamination is atmospheric Hg transport. Thus, a better understanding of the long-term history of atmospheric Hg cycling and quantification of the sources is critical for assessing the regional and global impact of anthropogenic Hg emissions. Ice cores collected from the Upper Fremont Glacier (UFG), Wyoming, contain a high-resolution record of total atmospheric Hg deposition (ca. 1720−1993). Total Hg in 97 ice-core samples was determined with trace-metal clean handling methods and low-level analytical procedures to reconstruct the first and most comprehensive atmospheric Hg deposition record of its kind yet available from North America. The record indicates major atmospheric releases of both natural and anthropogenic Hg from regional and global sources. Integrated over the past 270-year ice-core history, anthropogenic inputs contributed 52%, volcanic events 6%, and background sources 42%. More significantly, during the last 100 years, anthropogenic sources contributed 70% of the total Hg input. Unlike the 2−7-fold increase observed from preindustrial times (before 1840) to the mid-1980s in sediment-core records, the UFG record indicates a 20-fold increase for the same period. The sediment-core records, however, are in agreement with the last 10 years of this ice-core record, indicating declines in atmospheric Hg deposition.
","language":"English","publisher":"American Chemical Society","doi":"10.1021/es0157503","usgsCitation":"Schuster, P.F., Krabbenhoft, D.P., Naftz, D.L., Cecil, L.D., Olson, M.L., DeWild, J.F., Susong, D.D., Green, J.R., and Abbott, M.L., 2002, Atmospheric mercury deposition during the last 270 years: A glacial ice core record of natural and anthropogenic sources: Environmental Science & Technology, v. 36, no. 11, p. 2303-2310, https://doi.org/10.1021/es0157503.","productDescription":"8 p. ","startPage":"2303","endPage":"2310","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":337687,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"36","issue":"11","noUsgsAuthors":false,"publicationDate":"2002-04-24","publicationStatus":"PW","scienceBaseUri":"58ca52d4e4b0849ce97c86fe","contributors":{"authors":[{"text":"Schuster, Paul F. 0000-0002-8314-1372 pschuste@usgs.gov","orcid":"https://orcid.org/0000-0002-8314-1372","contributorId":1360,"corporation":false,"usgs":true,"family":"Schuster","given":"Paul","email":"pschuste@usgs.gov","middleInitial":"F.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":684635,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Krabbenhoft, David P. 0000-0003-1964-5020 dpkrabbe@usgs.gov","orcid":"https://orcid.org/0000-0003-1964-5020","contributorId":1658,"corporation":false,"usgs":true,"family":"Krabbenhoft","given":"David","email":"dpkrabbe@usgs.gov","middleInitial":"P.","affiliations":[{"id":37464,"text":"WMA - Laboratory & Analytical Services Division","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true},{"id":37947,"text":"Upper Midwest Water Science Center","active":true,"usgs":true}],"preferred":true,"id":684636,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Naftz, David L. 0000-0003-1130-6892 dlnaftz@usgs.gov","orcid":"https://orcid.org/0000-0003-1130-6892","contributorId":1041,"corporation":false,"usgs":true,"family":"Naftz","given":"David","email":"dlnaftz@usgs.gov","middleInitial":"L.","affiliations":[{"id":5050,"text":"WY-MT Water Science Center","active":true,"usgs":true},{"id":610,"text":"Utah Water Science Center","active":true,"usgs":true}],"preferred":true,"id":684637,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cecil, L. DeWayne","contributorId":72828,"corporation":false,"usgs":true,"family":"Cecil","given":"L.","email":"","middleInitial":"DeWayne","affiliations":[],"preferred":false,"id":684638,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Olson, Mark L.","contributorId":149743,"corporation":false,"usgs":false,"family":"Olson","given":"Mark","email":"","middleInitial":"L.","affiliations":[{"id":17808,"text":"University of Illinois, Champaign","active":true,"usgs":false}],"preferred":false,"id":684639,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"DeWild, John F. 0000-0003-4097-2798 jfdewild@usgs.gov","orcid":"https://orcid.org/0000-0003-4097-2798","contributorId":2525,"corporation":false,"usgs":true,"family":"DeWild","given":"John","email":"jfdewild@usgs.gov","middleInitial":"F.","affiliations":[{"id":37947,"text":"Upper Midwest Water Science Center","active":true,"usgs":true},{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"preferred":true,"id":684640,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Susong, David D. ddsusong@usgs.gov","contributorId":1040,"corporation":false,"usgs":true,"family":"Susong","given":"David","email":"ddsusong@usgs.gov","middleInitial":"D.","affiliations":[{"id":610,"text":"Utah Water Science Center","active":true,"usgs":true}],"preferred":true,"id":684641,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Green, Jaromy R.","contributorId":57498,"corporation":false,"usgs":true,"family":"Green","given":"Jaromy","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":684642,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Abbott, Michael L.","contributorId":189373,"corporation":false,"usgs":false,"family":"Abbott","given":"Michael","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":684643,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}} ,{"id":70185149,"text":"70185149 - 2002 - Anaerobic methane oxidation in a landfill-leachate plume","interactions":[],"lastModifiedDate":"2017-08-26T14:08:53","indexId":"70185149","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Anaerobic methane oxidation in a landfill-leachate plume","docAbstract":"The alluvial aquifer adjacent to Norman Landfill, OK, provides an excellent natural laboratory for the study of anaerobic processes impacting landfill-leachate contaminated aquifers. We collected groundwaters from a transect of seven multilevel wells ranging in depth from 1.3 to 11 m that were oriented parallel to the flow path. The center of the leachate plume was characterized by (1) high alkalinity and elevated concentrations of total dissolved organic carbon, reduced iron, and methane, and (2) negligible oxygen, nitrate, and sulfate concentrations. Methane concentrations and stable carbon isotope (δ13C) values suggest anaerobic methane oxidation was occurring within the plume and at its margins. Methane δ13C values increased from about −54‰ near the source to >−10‰ downgradient and at the plume margins. The isotopic fractionation associated with this methane oxidation was −13.6 ± 1.0‰. Methane 13C enrichment indicated that 80−90% of the original landfill methane was oxidized over the 210-m transect. First-order rate constants ranged from 0.06 to 0.23 per year, and oxidation rates ranged from 18 to 230 μM/y. Overall, hydrochemical data suggest that a sulfate reducer-methanogen consortium may mediate this methane oxidation. These results demonstrate that natural attenuation through anaerobic methane oxidation can be an important sink for landfill methane in aquifer systems.
","language":"English","publisher":"American Chemical Society","doi":"10.1021/es015695y","usgsCitation":"Grossman, E.L., Cifuentes, L.A., and Cozzarelli, I.M., 2002, Anaerobic methane oxidation in a landfill-leachate plume: Environmental Science & Technology, v. 36, no. 11, p. 2436-2442, https://doi.org/10.1021/es015695y.","productDescription":"7 p. ","startPage":"2436","endPage":"2442","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":478668,"rank":0,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://hdl.handle.net/1969.1/94976","text":"External Repository"},{"id":337633,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"36","issue":"11","noUsgsAuthors":false,"publicationDate":"2002-04-24","publicationStatus":"PW","scienceBaseUri":"58ca52d6e4b0849ce97c8710","contributors":{"authors":[{"text":"Grossman, Ethan L.","contributorId":189344,"corporation":false,"usgs":false,"family":"Grossman","given":"Ethan","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":684534,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cifuentes, Luis A.","contributorId":189345,"corporation":false,"usgs":false,"family":"Cifuentes","given":"Luis","email":"","middleInitial":"A.","affiliations":[{"id":34980,"text":"Department of Oceanography, Texas A&M University","active":true,"usgs":false}],"preferred":false,"id":684535,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cozzarelli, Isabelle M. 0000-0002-5123-1007 icozzare@usgs.gov","orcid":"https://orcid.org/0000-0002-5123-1007","contributorId":1693,"corporation":false,"usgs":true,"family":"Cozzarelli","given":"Isabelle","email":"icozzare@usgs.gov","middleInitial":"M.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true},{"id":49175,"text":"Geology, Energy & Minerals Science Center","active":true,"usgs":true}],"preferred":true,"id":684536,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70188285,"text":"70188285 - 2002 - Hydrogeologic framework, ground-water geochemistry, and assessment of nitrogen yield from base flow in two agricultural watersheds, Kent County, Maryland","interactions":[],"lastModifiedDate":"2020-02-18T19:55:03","indexId":"70188285","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"seriesNumber":"EPA/600/R-02/008","title":"Hydrogeologic framework, ground-water geochemistry, and assessment of nitrogen yield from base flow in two agricultural watersheds, Kent County, Maryland","docAbstract":"Hydrostratigraphic and geochemical data collected in two adjacent watersheds on the Delmarva Peninsula, in Kent County, Maryland, indicate that shallow subsurface stratigraphy is an important factor that affects the concentrations of nitrogen in ground water discharging as stream base flow. The flux of nitrogen from shallow aquifers can contribute substantially to the eutrophication of streams and estuaries, degrading water quality and aquatic habitats. The information presented in this report includes a hydrostratigraphic framework for the Locust Grove study area, analyses and interpretation of ground-water chemistry, and an analysis of nutrient yields from stream base flow. An understanding of the processes by which ground-water nitrogen discharges to streams is important for optimal management of nutrients in watersheds in which ground-water discharge is an appreciable percentage of total streamflow. The U.S. Geological Survey, in cooperation with the U.S. Environmental Protection Agency (USEPA), collected and analyzed hydrostratigraphic and geochemical data in support of ground-water flow modeling by the USEPA.
The adjacent watersheds of Morgan Creek and Chesterville Branch have similar topography and land use; however, reported nitrogen concentrations are generally 6 to 10 milligrams per liter in Chesterville Branch but only 2 to 4 milligrams per liter in Morgan Creek. Ground water in the surficial aquifer in the recharge areas of both streams has high concentrations of nitrate (greater than 10 milligrams per liter as N) and dissolved oxygen. One component of the ground water discharging to Morgan Creek typically is anoxic and contains virtually no dissolved nitrate; most of the ground water discharging to Chesterville Branch is oxygenated and contains moderately high concentrations of nitrate.
The surficial aquifer in the study area is composed of the deeply weathered sands and gravels of the Pensauken Formation (the Columbia aquifer) and the underlying glauconitic sands of the upper Aquia Formation (the Aquia aquifer). The lower 6 to 9 meters of the Aquia Formation is a low-permeability silt-clay with abundant glauconite. The Aquia confining layer underlies the Columbia-Aquia surficial aquifer throughout the study area. The sediment redox transition, identified in cores, that occurs in the upper 0.5 to 1 meter of the Aquia confining layer is thought to be a site for subsurface denitrification of ground water. The first confined aquifer is composed of the glauconitic sands in the upper 9 to 11 meters of the Hornerstown Formation. The Hornerstown aquifer is underlain by 10 to 15 meters of glauconitic silt-clay at the base of the Hornerstown Formation (the Hornerstown confining layer), and 5 meters of low-permeability clay in the underlying Severn Formation.
The Aquia and Hornerstown Formations dip and thicken to the southeast, and the Aquia confining layer subcrops shallowly (within 5 meters of the land surface) in a band that strikes southwest to northeast across the northern edge of the study area. The surficial aquifer is very thin (generally less than 5 meters) north of Morgan Creek, and the alluvial valley of Morgan Creek has incised into the top of the Aquia confining layer. In contrast, the Aquia confining layer lies 22 meters below Chesterville Branch, and the surficial aquifer approaches 30 meters in thickness (away from the creek).
Chemically reduced iron sulfides and glauconite in the Aquia confining layer are likely substrates for denitrification of nitrate in ground water. Evidence from the dissolved concentrations of nitrate, sulfate, iron, argon, and nitrogen gas, and stable nitrogen isotopes support the interpretation that ground water flowing near the top of the Aquia confining layer, or through the confined Hornerstown aquifer, has undergone denitrification. This process appears to have the greatest effect on ground-water chemistry north of Morgan Creek, where the surficial aquifer is thin and a greater percentage of the ground water contacts the Aquia confining layer.
The base-flow discharges of total nitrogen from the two watersheds are of similar magnitude, although Chesterville Branch has somewhat higher loads (29,000 kilograms of nitrogen per year) than Morgan Creek (20,000 kilograms of nitrogen per year), although Morgan Creek has a larger drainage area and a greater discharge of water. The base-flow yield of nitrogen (load per unit area) in Chesterville Branch (median of 0.058 grams per second per square kilometer at the outlet) is more than twice that of Morgan Creek (median of 0.022 grams per second per square kilometer at the outlet), reflecting the higher concentration of nitrate in ground water discharging to Chesterville Branch. Total nitrogen concentrations tend to decrease downstream in Chesterville Branch and increase downstream in Morgan Creek. The downstream trend in Chesterville Branch may be affected by instream nitrogen uptake and denitrification, and an increasing proportion of older, denitrified ground water in downstream discharge. The downstream trends in Morgan Creek may be affected by inflow from tributaries, downstream changes in the source of discharge water, and downstream changes in the riparian zone, which could affect the processes and degree of denitrification.
Although these two watersheds appear to have landscape features (such as topography, land use, and soils) that would produce similar nitrogen discharges, a more detailed examination of landscape features indicates that Chesterville Branch has soils that are slightly better drained, tributary stream outlets at higher altitudes, and a slightly higher percentage of agricultural land. All of these factors have been related to higher nitrogen yields. Nonetheless, most of the data support the interpretation that hydrostratigraphy has the greatest effect in producing the difference in nitrogen yields between the two watersheds.
No abstract available.
","language":"English","publisher":"Springer","doi":"10.1007/s10040-002-0191-y","usgsCitation":"Schneider, R., and Voss, C.I., 2002, Editors' message: The past year and thanks: Hydrogeology Journal, v. 10, no. 1, p. 1-2, https://doi.org/10.1007/s10040-002-0191-y.","productDescription":"2 p. ","startPage":"1","endPage":"2","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":478795,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1007/s10040-002-0191-y","text":"Publisher Index Page"},{"id":337686,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"10","issue":"1","noUsgsAuthors":false,"publicationDate":"2002-01-12","publicationStatus":"PW","scienceBaseUri":"58ca52d5e4b0849ce97c8700","contributors":{"authors":[{"text":"Schneider, Robert","contributorId":102460,"corporation":false,"usgs":true,"family":"Schneider","given":"Robert","email":"","affiliations":[],"preferred":false,"id":684633,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Voss, Clifford I. 0000-0001-5923-2752 cvoss@usgs.gov","orcid":"https://orcid.org/0000-0001-5923-2752","contributorId":1559,"corporation":false,"usgs":true,"family":"Voss","given":"Clifford","email":"cvoss@usgs.gov","middleInitial":"I.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":684634,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70185139,"text":"70185139 - 2002 - Mercury(II) sorption to two Florida Everglades peat: Evidence for strong and weak binding and competition by dissolved organic matter released from the peat","interactions":[],"lastModifiedDate":"2018-11-28T09:35:18","indexId":"70185139","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Mercury(II) sorption to two Florida Everglades peat: Evidence for strong and weak binding and competition by dissolved organic matter released from the peat","docAbstract":"The binding of mercury(II) to two peats from Florida Everglades sites with different rates of mercury methylation was measured at pH 6.0 and 0.01 M ionic strength. The mercury(II) sorption isotherms, measured over a total mercury(II) range of 10-7.4 to 10-3.7 M, showed the competition for mercury(II) between the peat and dissolved organic matter released from the peat and the existence of strong and weak binding sites for mercury(II). Binding was portrayed by a model accounting for strong and weak sites on both the peat and the released DOM. The conditional binding constants (for which the ligand concentration was set as the concentration of reduced sulfur in the organic matter as measured by X-ray absorption near-edge structure spectroscopy) determined for the strong sites on the two peats were similar (Kpeat,s = 1021.8±0.1and 1022.0±0.1 M-1), but less than those determined for the DOM strong sites (Kdom,s = 1022.8±0.1and 1023.2±0.1 M-1), resulting in mercury(II) binding by the DOM at low mercury(II) concentrations. The magnitude of the strong site binding constant is indicative of mercury(II) interaction with organic thiol functional groups. The conditional binding constants determined for the weak peat sites (Kpeat,w = 1011.5±0.1 and 1011.8±0.1 M-1) and weak DOM sites (Kdom,w = 108.7±3.0 and 107.3±4.5 M-1) were indicative of mercury(II) interaction with carboxyl and phenol functional groups.
","language":"English","publisher":"American Chemical Society","doi":"10.1021/es0114005","usgsCitation":"Drexel, R., Haitzer, M., Ryan, J.N., Aiken, G.R., and Nagy, K.L., 2002, Mercury(II) sorption to two Florida Everglades peat: Evidence for strong and weak binding and competition by dissolved organic matter released from the peat: Environmental Science & Technology, v. 36, no. 19, p. 4058-4064, https://doi.org/10.1021/es0114005.","productDescription":"7 p. ","startPage":"4058","endPage":"4064","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":337624,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"36","issue":"19","noUsgsAuthors":false,"publicationDate":"2002-08-29","publicationStatus":"PW","scienceBaseUri":"58ca52d6e4b0849ce97c8716","contributors":{"authors":[{"text":"Drexel, R. Todd","contributorId":189324,"corporation":false,"usgs":false,"family":"Drexel","given":"R. Todd","affiliations":[],"preferred":false,"id":684498,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Haitzer, Markus","contributorId":189325,"corporation":false,"usgs":false,"family":"Haitzer","given":"Markus","email":"","affiliations":[],"preferred":false,"id":684499,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ryan, Joseph N.","contributorId":54290,"corporation":false,"usgs":false,"family":"Ryan","given":"Joseph","email":"","middleInitial":"N.","affiliations":[{"id":604,"text":"University of Colorado- Boulder","active":false,"usgs":true}],"preferred":false,"id":684500,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Aiken, George R. 0000-0001-8454-0984 graiken@usgs.gov","orcid":"https://orcid.org/0000-0001-8454-0984","contributorId":1322,"corporation":false,"usgs":true,"family":"Aiken","given":"George","email":"graiken@usgs.gov","middleInitial":"R.","affiliations":[{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":684501,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Nagy, Kathryn L.","contributorId":189327,"corporation":false,"usgs":false,"family":"Nagy","given":"Kathryn","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":684502,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70185172,"text":"70185172 - 2002 - Relating net nitrogen input in the Mississippi River Basin to nitrate flux in the Lower Mississippi River--A comparison of approaches","interactions":[],"lastModifiedDate":"2018-11-26T09:01:50","indexId":"70185172","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2262,"text":"Journal of Environmental Quality","active":true,"publicationSubtype":{"id":10}},"title":"Relating net nitrogen input in the Mississippi River Basin to nitrate flux in the Lower Mississippi River--A comparison of approaches","docAbstract":"A quantitative understanding of the relationship between terrestrial N inputs and riverine N flux can help guide conservation, policy, and adaptive management efforts aimed at preserving or restoring water quality. The objective of this study was to compare recently published approaches for relating terrestrial N inputs to the Mississippi River basin (MRB) with measured nitrate flux in the lower Mississippi River. Nitrogen inputs to and outputs from the MRB (1951 to 1996) were estimated from state-level annual agricultural production statistics and NO y (inorganic oxides of N) deposition estimates for 20 states that comprise 90% of the MRB. A model with water yield and gross N inputs accounted for 85% of the variation in observed annual nitrate flux in the lower Mississippi River, from 1960 to 1998, but tended to underestimate high nitrate flux and overestimate low nitrate flux. A model that used water yield and net anthropogenic nitrogen inputs (NANI) accounted for 95% of the variation in riverine N flux. The NANI approach accounted for N harvested in crops and assumed that crop harvest in excess of the nutritional needs of the humans and livestock in the basin would be exported from the basin. The U.S. White House Committee on Natural Resources and Environment (CENR) developed a more comprehensive N budget that included estimates of ammonia volatilization, denitrification, and exchanges with soil organic matter. The residual N in the CENR budget was weakly and negatively correlated with observed riverine nitrate flux. The CENR estimates of soil N mineralization and immobilization suggested that there were large (2000 kg N ha−1) net losses of soil organic N between 1951 and 1996. When the CENR N budget was modified by assuming that soil organic N levels have been relatively constant after 1950, and ammonia volatilization losses are redeposited within the basin, the trend of residual N closely matched temporal variation in NANI and was positively correlated with riverine nitrate flux in the lower Mississippi River. Based on results from applying these three modeling approaches, we conclude that although the NANI approach does not address several processes that influence the N cycle, it appears to focus on the terms that can be estimated with reasonable certainty and that are correlated with riverine N flux.
","language":"English","publisher":"ACSESS","doi":"10.2134/jeq2002.1610","usgsCitation":"McIsaac, G.F., David, M.B., Gertner, G.Z., and Goolsby, D.A., 2002, Relating net nitrogen input in the Mississippi River Basin to nitrate flux in the Lower Mississippi River--A comparison of approaches: Journal of Environmental Quality, v. 31, no. 5, p. 1610-1622, https://doi.org/10.2134/jeq2002.1610.","productDescription":"13 p. ","startPage":"1610","endPage":"1622","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":337677,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"31","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58ca52d5e4b0849ce97c870a","contributors":{"authors":[{"text":"McIsaac, Gregory F.","contributorId":189364,"corporation":false,"usgs":false,"family":"McIsaac","given":"Gregory","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":684603,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"David, Mark B.","contributorId":43255,"corporation":false,"usgs":false,"family":"David","given":"Mark","email":"","middleInitial":"B.","affiliations":[{"id":35161,"text":"University of Illinois, Urbana-Champaign","active":true,"usgs":false}],"preferred":false,"id":684604,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gertner, George Z.","contributorId":189365,"corporation":false,"usgs":false,"family":"Gertner","given":"George","email":"","middleInitial":"Z.","affiliations":[],"preferred":false,"id":684605,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Goolsby, Donald A.","contributorId":46083,"corporation":false,"usgs":true,"family":"Goolsby","given":"Donald","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":684606,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70194882,"text":"70194882 - 2002 - Thermocouple psychrometry","interactions":[],"lastModifiedDate":"2018-09-19T09:23:56","indexId":"70194882","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2002","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"seriesTitle":{"id":5605,"text":"Soil Science Society of America Book Series","active":true,"publicationSubtype":{"id":24}},"seriesNumber":"5.4","chapter":"3.2.3","title":"Thermocouple psychrometry","docAbstract":"Thermocouple psychrometry is a technique that infers the water potential of the liquid phase of a sample from measurements within the vapor phase that is in equilibrium with the sample. The theoretical relation between water potential of the liquid phase and relative humidity of the vapor phase is given by the Kelvin equation
Ψ = energy/volume = (RT/Vw) ln(p/po) [3.2.3–1]
where ψ is water potential (sum of matric and osmotic potential, MPa), R is the universal gas constant (8.314 × 10-6 MJ mol-1 K-1), T is temperature (K), Vw is molar volume of water (1.8 × 10-5 m3 mol-1), and p/po is relative humidity expressed as a fraction where p is actual vapor pressure of air in equilibrium with the liquid phase (MPa) and po is saturation vapor pressure (MPa) at T.
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