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,{"id":21950,"text":"ofr99397 - 1999 - Microfossil and stable isotope data from the last interglacial records of Ocean Drilling Program (ODP) sites 1018 and 1020","interactions":[],"lastModifiedDate":"2012-02-02T00:07:59","indexId":"ofr99397","displayToPublicDate":"2000-01-10T00:00:00","publicationYear":"1999","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":"99-397","title":"Microfossil and stable isotope data from the last interglacial records of Ocean Drilling Program (ODP) sites 1018 and 1020","language":"ENGLISH","publisher":"U.S. Dept. of the Interior, U.S. Geological Survey,","doi":"10.3133/ofr99397","issn":"0094-9140","usgsCitation":"Poore, R., Dowsett, H., Barron, J., Heusser, L., Ravelo, A.C., Mix, A., and McMahon, A., 1999, Microfossil and stable isotope data from the last interglacial records of Ocean Drilling Program (ODP) sites 1018 and 1020: U.S. Geological Survey Open-File Report 99-397, 19 p. :ill., maps ;28 cm., https://doi.org/10.3133/ofr99397.","productDescription":"19 p. :ill., maps ;28 cm.","costCenters":[],"links":[{"id":155250,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1999/0397/report-thumb.jpg"},{"id":51425,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1999/0397/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a51e4b07f02db629d2c","contributors":{"authors":[{"text":"Poore, R.Z.","contributorId":35314,"corporation":false,"usgs":true,"family":"Poore","given":"R.Z.","email":"","affiliations":[],"preferred":false,"id":186393,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dowsett, H.J. 0000-0003-1983-7524","orcid":"https://orcid.org/0000-0003-1983-7524","contributorId":87924,"corporation":false,"usgs":true,"family":"Dowsett","given":"H.J.","affiliations":[],"preferred":false,"id":186396,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Barron, J.A. 0000-0002-9309-1145","orcid":"https://orcid.org/0000-0002-9309-1145","contributorId":95461,"corporation":false,"usgs":true,"family":"Barron","given":"J.A.","affiliations":[],"preferred":false,"id":186397,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Heusser, L.","contributorId":106888,"corporation":false,"usgs":true,"family":"Heusser","given":"L.","affiliations":[],"preferred":false,"id":186398,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ravelo, A. C.","contributorId":24778,"corporation":false,"usgs":false,"family":"Ravelo","given":"A.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":186392,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Mix, A.","contributorId":39363,"corporation":false,"usgs":true,"family":"Mix","given":"A.","email":"","affiliations":[],"preferred":false,"id":186394,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"McMahon, A.","contributorId":52998,"corporation":false,"usgs":true,"family":"McMahon","given":"A.","email":"","affiliations":[],"preferred":false,"id":186395,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
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,{"id":24428,"text":"ofr99502 - 1999 - Alaska aeromagnetic compilation: Digital grids and survey data","interactions":[],"lastModifiedDate":"2022-09-01T21:27:54.992411","indexId":"ofr99502","displayToPublicDate":"2000-01-10T00:00:00","publicationYear":"1999","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":"99-502","title":"Alaska aeromagnetic compilation: Digital grids and survey data","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr99502","usgsCitation":"Saltus, R.W., Connard, G., and Hill, P.L., 1999, Alaska aeromagnetic compilation: Digital grids and survey data (Version 1.0.): U.S. Geological Survey Open-File Report 99-502, 1 CD-Rom, 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,{"id":23406,"text":"ofr99391 - 1999 - Alaska resource data file: Seldovia quadrangle","interactions":[],"lastModifiedDate":"2025-07-28T20:24:08.256053","indexId":"ofr99391","displayToPublicDate":"2000-01-10T00:00:00","publicationYear":"1999","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":"99-391","title":"Alaska resource data file: Seldovia quadrangle","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr99391","usgsCitation":"Huber, J., 1999, Alaska resource data file: Seldovia quadrangle: U.S. Geological Survey Open-File Report 99-391, 70 p., https://doi.org/10.3133/ofr99391.","productDescription":"70 p.","costCenters":[],"links":[{"id":52706,"rank":4,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1999/0391/ofr99391.pdf","text":"Report","size":"263 KB","linkFileType":{"id":1,"text":"pdf"}},{"id":157260,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1999/0391/report-thumb.jpg"},{"id":1742,"rank":2,"type":{"id":18,"text":"Project Site"},"url":"https://doi.org/10.5066/P96MMRFD","linkFileType":{"id":5,"text":"html"}},{"id":404070,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_22527.htm","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Alaska","otherGeospatial":"Seldovia quadrangle","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -153,\n              59\n            ],\n            [\n              -150,\n              59\n            ],\n            [\n              -150,\n              60\n            ],\n            [\n              -153,\n              60\n            ],\n            [\n              -153,\n              59\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae2e4b07f02db688de9","contributors":{"authors":[{"text":"Huber, Jeff","contributorId":54243,"corporation":false,"usgs":true,"family":"Huber","given":"Jeff","affiliations":[],"preferred":false,"id":190056,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":22890,"text":"ofr99251 - 1999 - Water-quality, bed-sediment and biological data (October 1997 through September 1998) and statistical summaries of data for streams in the upper Clark Fork basin, Montana","interactions":[],"lastModifiedDate":"2022-09-19T18:51:49.790258","indexId":"ofr99251","displayToPublicDate":"2000-01-10T00:00:00","publicationYear":"1999","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":"99-251","title":"Water-quality, bed-sediment and biological data (October 1997 through September 1998) and statistical summaries of data for streams in the upper Clark Fork basin, Montana","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr99251","usgsCitation":"Dodge, K.A., Hornberger, M.I., and Bouse, R.M., 1999, Water-quality, bed-sediment and biological data (October 1997 through September 1998) and statistical summaries of data for streams in the upper Clark Fork basin, Montana: U.S. Geological Survey Open-File Report 99-251, iv, 102 p., https://doi.org/10.3133/ofr99251.","productDescription":"iv, 102 p.","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":154215,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1999/0251/report-thumb.jpg"},{"id":52296,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1999/0251/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":406995,"rank":2,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_22687.htm","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Montana","otherGeospatial":"upper Clark Fork basin","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -114,\n              46\n            ],\n            [\n              -112.4764,\n              46\n            ],\n            [\n              -112.4764,\n              46.9028\n            ],\n            [\n              -114,\n              46.9028\n            ],\n            [\n              -114,\n              46\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a08e4b07f02db5fa4f5","contributors":{"authors":[{"text":"Dodge, K. A.","contributorId":40615,"corporation":false,"usgs":true,"family":"Dodge","given":"K.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":189077,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hornberger, Michelle I. 0000-0002-7787-3446","orcid":"https://orcid.org/0000-0002-7787-3446","contributorId":23574,"corporation":false,"usgs":true,"family":"Hornberger","given":"Michelle","email":"","middleInitial":"I.","affiliations":[],"preferred":false,"id":189075,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bouse, R. M.","contributorId":33709,"corporation":false,"usgs":true,"family":"Bouse","given":"R.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":189076,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":38119,"text":"ofr99435 - 1999 - Principal facts for gravity stations and physical property measurements in the Lake Mead 30' by 60' quadrangle, Nevada and Arizona","interactions":[],"lastModifiedDate":"2023-06-15T15:43:33.675782","indexId":"ofr99435","displayToPublicDate":"2000-01-10T00:00:00","publicationYear":"1999","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":"99-435","title":"Principal facts for gravity stations and physical property measurements in the Lake Mead 30' by 60' quadrangle, Nevada and Arizona","docAbstract":"The U.S. Geological Survey (USGS) collected 811 gravity stations on the Lake Mead 30' by 60' quadrangle from October, 1997 to September, 1999. These data were collected in support of geologic mapping of the Lake Mead quadrangle. In addition to these new data, gravity stations were compiled from a number of sources. These stations were reprocessed according to the reduction method described below and used for the new data. Density and magnetic susceptibility measurements were also performed on more than 250 rock samples. The Lake Mead quadrangle ranges from 360 to 360 30' north latitude and from 114° to 115° west longitude. It spans most of Lake Mead (see index map, below), the largest manmade lake in the United States, and includes most of the Lake Mead National Recreation Area. Its geology is very complex; Mesozoic thrust faults are exposed in the Muddy Mountains, Precambrian crystalline basement rocks are exhumed in tilted fault blocks near Gold Butte, extensive Tertiary volcanism is evident in the Black Mountains, and strike-slip faults of the right-lateral Las Vegas Valley shear zone and the left-lateral Lake Mead fault system meet near the Gale Hills. These gravity data and physical property measurements will aid in the 3-dimensional characterization of structure and stratigraphy in the quadrangle as part of the Las Vegas Urban Corridor mapping project.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr99435","issn":"0094-9140","usgsCitation":"Langenheim, V., Davidson, J.G., Anderson, M., and Blank, H.R., 1999, Principal facts for gravity stations and physical property measurements in the Lake Mead 30' by 60' quadrangle, Nevada and Arizona (Version 1.0): U.S. Geological Survey Open-File Report 99-435, Report: 15 p.; Readme; Metadata; Version history; Physical property; Gravity data, https://doi.org/10.3133/ofr99435.","productDescription":"Report: 15 p.; Readme; Metadata; Version history; Physical property; Gravity data","numberOfPages":"15","temporalStart":"1997-10-01","temporalEnd":"1999-09-30","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":284997,"rank":2,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/1999/0435/lm_100k.iso"},{"id":284996,"rank":3,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/1999/0435/lm.prop"},{"id":284995,"rank":4,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/1999/0435/version_history.txt"},{"id":284994,"rank":6,"type":{"id":16,"text":"Metadata"},"url":"https://pubs.usgs.gov/of/1999/0435/lm-meta-of99-435.txt"},{"id":284993,"rank":7,"type":{"id":20,"text":"Read Me"},"url":"https://pubs.usgs.gov/of/1999/0435/lm_readme.txt"},{"id":284992,"rank":5,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1999/0435/pdf/of99-435.pdf"},{"id":164525,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr99435.gif"},{"id":3455,"rank":8,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/1999/0435/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Arizona, Nevada","otherGeospatial":"Lake Mead","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -115.0,36.0 ], [ -115.0,36.5 ], [ -114.0,36.5 ], [ -114.0,36.0 ], [ -115.0,36.0 ] ] ] } } ] }","edition":"Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd6df7e4b0b290851057b8","contributors":{"authors":[{"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":219059,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Davidson, J. G.","contributorId":11243,"corporation":false,"usgs":true,"family":"Davidson","given":"J.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":219058,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Anderson, M.L.","contributorId":93138,"corporation":false,"usgs":true,"family":"Anderson","given":"M.L.","email":"","affiliations":[],"preferred":false,"id":219060,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Blank, H. R. Jr.","contributorId":94674,"corporation":false,"usgs":true,"family":"Blank","given":"H.","suffix":"Jr.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":219061,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":38112,"text":"ofr99342 - 1999 - Geochemical data for environmental studies of mineral deposits at Nabesna, Kennecott, Orange Hill, Bond Creek, Bremner, and Gold Hill, Wrangell-St. Elias National Park and Preserve, Alaska","interactions":[],"lastModifiedDate":"2017-03-09T14:59:05","indexId":"ofr99342","displayToPublicDate":"2000-01-10T00:00:00","publicationYear":"1999","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":"99-342","title":"Geochemical data for environmental studies of mineral deposits at Nabesna, Kennecott, Orange Hill, Bond Creek, Bremner, and Gold Hill, Wrangell-St. Elias National Park and Preserve, Alaska","docAbstract":"<p>Environmental geochemical investigations were carried out between 1994 and 1997 in Wrangell-St. Elias National Park and Preserve (WRST), Alaska. Mineralized areas studied include the historic Nabesna gold mine/mill and surrounding areas; the historic Kennecott copper mill area and nearby Bonanza, Erie, Glacier, and Jumbo mines; the historic mill and gold mines in the Bremner district; the active gold placer mines at Gold Hill; and the unmined copper-molybdenum deposits at Orange Hill and Bond Creek. The purpose of the study was to determine the extent of possible environmental hazards associated with these mineralized areas and to establish background and baseline levels for selected elements. Thus, concentrations of a large suite of trace elements were determined to assess metal loadings in the various sample media collected. This report presents the methodology, analytical results, and sample descriptions for water, leachate, sediment, heavy-mineral concentrate, rock, and vegetation (willow) samples collected during these geochemical investigations. An interpretive U.S. Geological Survey Professional Paper incorporating these geochemical data will follow.</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr99342","issn":"0566-8174","isbn":"0607926759","usgsCitation":"Eppinger, R., Briggs, P., Rosenkrans, D., Ballestrazze, V., Aldir, J., Brown, Z.A., Crock, J., d’Angelo, W.M., Doughten, M., Fey, D., Hageman, P., Hopkins, R., Knight, R.J., Malcolm, M., McHugh, J.B., Meier, A.L., Motooka, J.M., O’Leary, R.M., Roushey, B.H., Sultley, S., Theodorakos, P.M., and Wilson, S., 1999, Geochemical data for environmental studies of mineral deposits at Nabesna, Kennecott, Orange Hill, Bond Creek, Bremner, and Gold Hill, Wrangell-St. Elias National Park and Preserve, Alaska: U.S. Geological Survey Open-File Report 99-342, 28 cm., https://doi.org/10.3133/ofr99342.","productDescription":"28 cm.","costCenters":[],"links":[{"id":165452,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":3451,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/1999/ofr-99-0342/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b05e4b07f02db699e82","contributors":{"authors":[{"text":"Eppinger, R. G.","contributorId":100837,"corporation":false,"usgs":true,"family":"Eppinger","given":"R. G.","affiliations":[],"preferred":false,"id":219017,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Briggs, Paul H.","contributorId":107691,"corporation":false,"usgs":true,"family":"Briggs","given":"Paul H.","affiliations":[],"preferred":false,"id":219019,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rosenkrans, D. S.","contributorId":53795,"corporation":false,"usgs":true,"family":"Rosenkrans","given":"D. 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A.","contributorId":82708,"corporation":false,"usgs":true,"family":"Brown","given":"Z.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":219013,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Crock, J.G.","contributorId":58236,"corporation":false,"usgs":true,"family":"Crock","given":"J.G.","email":"","affiliations":[],"preferred":false,"id":219009,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"d’Angelo, W. M.","contributorId":55027,"corporation":false,"usgs":true,"family":"d’Angelo","given":"W.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":219007,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Doughten, M. W.","contributorId":101648,"corporation":false,"usgs":true,"family":"Doughten","given":"M. 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J.","contributorId":96255,"corporation":false,"usgs":true,"family":"Knight","given":"R.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":219016,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Malcolm, M.J.","contributorId":95064,"corporation":false,"usgs":true,"family":"Malcolm","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":219015,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"McHugh, J. B.","contributorId":79462,"corporation":false,"usgs":true,"family":"McHugh","given":"J.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":219010,"contributorType":{"id":1,"text":"Authors"},"rank":15},{"text":"Meier, A. L.","contributorId":81480,"corporation":false,"usgs":true,"family":"Meier","given":"A.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":219012,"contributorType":{"id":1,"text":"Authors"},"rank":16},{"text":"Motooka, J. M.","contributorId":8834,"corporation":false,"usgs":true,"family":"Motooka","given":"J.","middleInitial":"M.","affiliations":[],"preferred":false,"id":218998,"contributorType":{"id":1,"text":"Authors"},"rank":17},{"text":"O’Leary, R. M.","contributorId":44894,"corporation":false,"usgs":true,"family":"O’Leary","given":"R.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":219004,"contributorType":{"id":1,"text":"Authors"},"rank":18},{"text":"Roushey, B. H.","contributorId":84387,"corporation":false,"usgs":true,"family":"Roushey","given":"B.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":219014,"contributorType":{"id":1,"text":"Authors"},"rank":19},{"text":"Sultley, S.J.","contributorId":48441,"corporation":false,"usgs":true,"family":"Sultley","given":"S.J.","email":"","affiliations":[],"preferred":false,"id":219005,"contributorType":{"id":1,"text":"Authors"},"rank":20},{"text":"Theodorakos, P. M.","contributorId":12500,"corporation":false,"usgs":true,"family":"Theodorakos","given":"P.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":218999,"contributorType":{"id":1,"text":"Authors"},"rank":21},{"text":"Wilson, S. A. 0000-0002-9468-0005","orcid":"https://orcid.org/0000-0002-9468-0005","contributorId":23561,"corporation":false,"usgs":true,"family":"Wilson","given":"S. A.","affiliations":[],"preferred":false,"id":219001,"contributorType":{"id":1,"text":"Authors"},"rank":22}]}}
,{"id":24176,"text":"ofr99383 - 1999 - High-angle faults in the basement of Yucca Flat, Nevada Test Site, Nevada, based on analysis of a constrained gravity inversion surface","interactions":[],"lastModifiedDate":"2023-06-15T15:44:42.731639","indexId":"ofr99383","displayToPublicDate":"2000-01-10T00:00:00","publicationYear":"1999","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":"99-383","title":"High-angle faults in the basement of Yucca Flat, Nevada Test Site, Nevada, based on analysis of a constrained gravity inversion surface","docAbstract":"Using a model of the topographic subsurface derived from drill hole and gravity inversion analysis of the basement rocks in Yucca Flat, Nevada Test Site (NTS), Nevada, a fault map and digital fault dataset were constructed based on offsets of the basement surface. Because these faults are, in large part, not present at the surface, they are interpreted to be inactive faults, older than the alluvial basin fill.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr99383","issn":"0094-9140","usgsCitation":"Phelps, G., and McKee, E.H., 1999, High-angle faults in the basement of Yucca Flat, Nevada Test Site, Nevada, based on analysis of a constrained gravity inversion surface: U.S. Geological Survey Open-File Report 99-383, Report: 11 p.; 5 Plates: 20.00 x 25.00 inches and smaller; Readme; Metadata, https://doi.org/10.3133/ofr99383.","productDescription":"Report: 11 p.; 5 Plates: 20.00 x 25.00 inches and smaller; Readme; Metadata","numberOfPages":"11","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":155484,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr99383.jpg"},{"id":284941,"rank":2,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/1999/0383/FAULTS.TXT"},{"id":391495,"rank":11,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_22756.htm"},{"id":1580,"rank":12,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/1999/0383/","linkFileType":{"id":5,"text":"html"}},{"id":284933,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1999/0383/pdf/of99-383.pdf"},{"id":284934,"rank":5,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1999/0383/pdf/figure1.pdf"},{"id":284935,"rank":6,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1999/0383/pdf/figure2A.pdf"},{"id":284936,"rank":7,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1999/0383/pdf/figure2B.pdf"},{"id":284937,"rank":8,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1999/0383/pdf/figure3.pdf"},{"id":284938,"rank":9,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1999/0383/pdf/figure4.pdf"},{"id":284939,"rank":10,"type":{"id":20,"text":"Read Me"},"url":"https://pubs.usgs.gov/of/1999/0383/README.TXT"},{"id":284940,"rank":4,"type":{"id":16,"text":"Metadata"},"url":"https://pubs.usgs.gov/of/1999/0383/METADATA.TXT"}],"scale":"1000000","projection":"Universal Transverse Mercator projection","country":"United States","state":"Nevada","otherGeospatial":"Yucca Flat","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -116.25,36.875 ], [ -116.25,37.25 ], [ -115.875,37.25 ], [ -115.875,36.875 ], [ -116.25,36.875 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd6082e4b0b290850fcf97","contributors":{"authors":[{"text":"Phelps, Geoffrey A.","contributorId":17262,"corporation":false,"usgs":true,"family":"Phelps","given":"Geoffrey A.","affiliations":[],"preferred":false,"id":191452,"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":191451,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":32916,"text":"pp1416H - 1999 - Hydrology of the coastal lowlands aquifer system in parts of Alabama, Florida, Louisiana, and Mississippi","interactions":[],"lastModifiedDate":"2025-06-16T17:14:55.527026","indexId":"pp1416H","displayToPublicDate":"2000-01-10T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":331,"text":"Professional Paper","code":"PP","onlineIssn":"2330-7102","printIssn":"1044-9612","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"1416","chapter":"H","title":"Hydrology of the coastal lowlands aquifer system in parts of Alabama, Florida, Louisiana, and Mississippi","docAbstract":"Existing data on water levels, water use, water quality, and aquifer properties were used to construct a multilayer digital model to simulate flow in the aquifer system. The report describes the geohydrologic framework of the aquifer system, and the development, calibration, and sensitivity analysis of the ground-water-flow model, but it is primarily focused on the results of the simulations that show the natural flow of ground water throughout the regional aquifer system and the changes from the natural flow caused by development of ground-water supplies.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Regional aquifer-system analysis--Gulf Coastal Plain (Professional Paper 1416)","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/pp1416H","usgsCitation":"Martin, A., and Whiteman, C.D., 1999, Hydrology of the coastal lowlands aquifer system in parts of Alabama, Florida, Louisiana, and Mississippi: U.S. Geological Survey Professional Paper 1416, Report: 51 p.; 8 Plates: 32.00 x 26.30 inches or smaller, 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D. Jr.","contributorId":20367,"corporation":false,"usgs":true,"family":"Whiteman","given":"C.","suffix":"Jr.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":209402,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":21648,"text":"ofr99420 - 1999 - Central West Antarctica aeromagnetic data; a web site for distribution of data and maps (paper edition)","interactions":[],"lastModifiedDate":"2012-02-02T00:07:57","indexId":"ofr99420","displayToPublicDate":"2000-01-10T00:00:00","publicationYear":"1999","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":"99-420","title":"Central West Antarctica aeromagnetic data; a web site for distribution of data and maps (paper edition)","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr99420","issn":"0566-8174","usgsCitation":"Sweeney, R.E., Finn, C., Blankenship, D.D., Bell, R., and Behrendt, J.C., 1999, Central West Antarctica aeromagnetic data; a web site for distribution of data and maps (paper edition): U.S. Geological Survey Open-File Report 99-420, i, 15 p. :col. maps ;28 cm., https://doi.org/10.3133/ofr99420.","productDescription":"i, 15 p. :col. maps ;28 cm.","costCenters":[],"links":[{"id":1272,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/1999/ofr-99-0420/","linkFileType":{"id":5,"text":"html"}},{"id":155160,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1999/0420/report-thumb.jpg"},{"id":51200,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1999/0420/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49e5e4b07f02db5e6e14","contributors":{"authors":[{"text":"Sweeney, R. E.","contributorId":72010,"corporation":false,"usgs":true,"family":"Sweeney","given":"R.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":185060,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Finn, C. A. 0000-0002-6178-0405","orcid":"https://orcid.org/0000-0002-6178-0405","contributorId":93917,"corporation":false,"usgs":true,"family":"Finn","given":"C. A.","affiliations":[],"preferred":false,"id":185061,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Blankenship, D. D.","contributorId":29012,"corporation":false,"usgs":false,"family":"Blankenship","given":"D.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":185058,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bell, R.E.","contributorId":70010,"corporation":false,"usgs":true,"family":"Bell","given":"R.E.","email":"","affiliations":[],"preferred":false,"id":185059,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Behrendt, John C. jbehrendt@usgs.gov","contributorId":25945,"corporation":false,"usgs":true,"family":"Behrendt","given":"John","email":"jbehrendt@usgs.gov","middleInitial":"C.","affiliations":[{"id":213,"text":"Crustal Imaging and Characterization Team","active":false,"usgs":true},{"id":218,"text":"Denver Federal Center","active":false,"usgs":true}],"preferred":false,"id":185057,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":22605,"text":"ofr99399 - 1999 - Geometry, structure, and concealed lithology of the San Rafael Basin, southeastern Arizona","interactions":[],"lastModifiedDate":"2023-06-15T15:57:41.65603","indexId":"ofr99399","displayToPublicDate":"2000-01-10T00:00:00","publicationYear":"1999","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":"99-399","title":"Geometry, structure, and concealed lithology of the San Rafael Basin, southeastern Arizona","docAbstract":"The contiguous United States has been well explored for exposed conventional mineral deposits. Therefore, it is likely that many economically viable and strategically significant conventional undiscovered mineral deposits will be found in bedrock concealed beneath basin sediments. Mineral resource assessments must incorporate an understanding of the geometry, structure, and concealed lithology of basins in order to be accurate. This report presents an analysis of the basin geometry and structure of the San Rafael basin in southeastern Arizona. In addition, a new methodology for inferring concealed lithology is presented and applied in the San Rafael basin.\n\nGravity data is used to model the geometry of the basin using recent models of sediment density vs. depth developed in the region. This modeling indicates that the basin has a maximum depth of approximately 1.05 km plus or minus 0.10 km. In the southern portion, the basin can be modeled as an asymmetric graben faulted on the western margin. The northern portion of the basin is structurally more complex and may have high angle faults on the western, northern, and eastern margin. Near-ground closely spaced Earth’s total intensity magnetic field data is used to locate concealed faults within the basin. This data is also used to infer lithology concealed by shallow basin sediments. Airborne Earth’s total intensity magnetic field data is used to help infer concealed lithology in deep portions of the basin. The product of integrating all data and interpretations is a map which presents the geometry of the basin, faults and contacts concealed by basin sediments, and an estimate of the bedrock lithology concealed by basin sediment.\n\nBased on basin geometry and concealed lithology, the San Rafael basin has a high potential for concealed mineral deposits on its western and northern margin. In particular, a newly discovered magnetic anomaly in the northern portion of the basin can be modeled as a granitic intrusion with highly altered margins and may represent a potential mineral resource target. Based on the permeability and porosity of upper basin fill found in nearby basins, the San Rafael basin may contain an aquifer up to 300 meters thick over a substantial area of the basin.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr99399","issn":"0094-9140","usgsCitation":"Bultman, M.W., 1999, Geometry, structure, and concealed lithology of the San Rafael Basin, southeastern Arizona (Version 1.0): U.S. Geological Survey Open-File Report 99-399, HTML document, https://doi.org/10.3133/ofr99399.","productDescription":"HTML document","onlineOnly":"Y","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":155840,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr99399.jpg"},{"id":284960,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1999/0399/intro.html"},{"id":1370,"rank":3,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/1999/0399/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Arizona","otherGeospatial":"San Rafael Basin","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -111.25,31.5 ], [ -111.25,32.0 ], [ -110.25,32.0 ], [ -110.25,31.5 ], [ -111.25,31.5 ] ] ] } } ] }","edition":"Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd5e9be4b0b290850fbcd8","contributors":{"authors":[{"text":"Bultman, Mark W. 0000-0001-8352-101X mbultman@usgs.gov","orcid":"https://orcid.org/0000-0001-8352-101X","contributorId":3348,"corporation":false,"usgs":true,"family":"Bultman","given":"Mark","email":"mbultman@usgs.gov","middleInitial":"W.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":false,"id":188556,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70074771,"text":"70074771 - 1999 - Neogene-quaternary Ostracoda and paleoenvironments, of the Limón basin, Costa Rica, and Bocas del Toro basin, Panama","interactions":[],"lastModifiedDate":"2015-12-15T08:42:25","indexId":"70074771","displayToPublicDate":"2000-01-01T14:59:58","publicationYear":"1999","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1142,"text":"Bulletins of American Paleontology","active":true,"publicationSubtype":{"id":10}},"title":"Neogene-quaternary Ostracoda and paleoenvironments, of the Limón basin, Costa Rica, and Bocas del Toro basin, Panama","docAbstract":"<p>Tropical marine ostracodes from Neogene and Quaternary sediments of the Central American Caribbean region have been the subject of biostratigraphic, ecological, taxonomic, and evolutionary studies. As part of the Panama Paleontology Project (PPP), Neogene and Quaternary ostracodes are being studied from the Central American region. The overall goal of this research is to evaluate the impact of the emergence of the Central American Isthmus as a land barrier between the Caribbean/tropical Atlantic and the Pacific oceans on marine ostracode biodiversity and the oceanic environments in which extant ostracodes evolved. Due to the ecological specificity of many living tropical ostracode species, they are ideally suited for reconstructing paleoenvironments on the basis of their occurrence in fossil assemblages, which in turn can lead to a better understanding of the tropical climatic and tectonic history of Central America. The principal aims of this chapter are: (a) to document the composition of the ostracode assemblages from the Lim&oacute;n Basin of Costa Rica and the Bocas del Toro Basin of Panama, two areas yielding extensive ma rine ostracode assemblages; (b) to describe the environments of deposition within these basins; and (c) to document the stratigraphic distribution of potentially agediagnostic ostracode species in the Lim&oacute;n and Bocas del Toro basins in order to enhance their use in Central American biostratigraphy. A secondary, but none-the-less important goal is to assemble a database on the distribution of modem ostracode species in the Caribbean and adjacent areas as a basis for comparison with fossil assemblages. Although the ecological, biostratigraphic and paleoenvironmental conclusions presented here will improve as additional material is studied, these fossil and modem ostracode databases constitute the foundation for future evolutionary and geochernical studies of tropical Caribbean and eastern Pacific Ocean ostracodes. Moreover, we present here evidence that major faunal and oceanic changes occurred in the westem Caribbean over the last 4 million years, probably related to changes in ocean circulation due to the emergence of the Isthmus as well as other climatic events.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Bulletins of American Paleontology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","usgsCitation":"Borne, P., Cronin, T.M., and Hazel, J.E., 1999, Neogene-quaternary Ostracoda and paleoenvironments, of the Limón basin, Costa Rica, and Bocas del Toro basin, Panama: Bulletins of American Paleontology, no. 357, p. 231-250.","productDescription":"20 p.","startPage":"231","endPage":"250","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":281925,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Costa Rica, Panama","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -83.0522,7.2036 ], [ -83.0522,11.22 ], [ -82.55,11.22 ], [ -82.55,7.2036 ], [ -83.0522,7.2036 ] ] ] } } ] }","issue":"357","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd68d0e4b0b290851024cc","contributors":{"authors":[{"text":"Borne, P.F.","contributorId":94217,"corporation":false,"usgs":true,"family":"Borne","given":"P.F.","email":"","affiliations":[],"preferred":false,"id":489856,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cronin, T. M. 0000-0002-2643-0979","orcid":"https://orcid.org/0000-0002-2643-0979","contributorId":42613,"corporation":false,"usgs":true,"family":"Cronin","given":"T.","email":"","middleInitial":"M.","affiliations":[{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true}],"preferred":false,"id":489854,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hazel, J. E.","contributorId":89187,"corporation":false,"usgs":false,"family":"Hazel","given":"J.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":489855,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":22622,"text":"ofr99380 - 1999 - Geophysical investigation of the nearshore geologic framework, eastern Casco Bay-Reid State Park, Maine: Data analysis and implications for Late Quaternary coastal evolution","interactions":[],"lastModifiedDate":"2021-11-16T20:56:13.649983","indexId":"ofr99380","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"1999","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":"99-380","title":"Geophysical investigation of the nearshore geologic framework, eastern Casco Bay-Reid State Park, Maine: Data analysis and implications for Late Quaternary coastal evolution","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr99380","issn":"0094-9140","usgsCitation":"Buynevich, I., FitzGerald, D.M., and Parolski, K.F., 1999, Geophysical investigation of the nearshore geologic framework, eastern Casco Bay-Reid State Park, Maine: Data analysis and implications for Late Quaternary coastal evolution: U.S. Geological Survey Open-File Report 99-380, 32 p., https://doi.org/10.3133/ofr99380.","productDescription":"32 p.","costCenters":[],"links":[{"id":391765,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_19729.htm"},{"id":52093,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1999/0380/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":155265,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1999/0380/report-thumb.jpg"}],"country":"United States","state":"Maine","otherGeospatial":"Casco Bay-Reid State Park","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -69.903,\n              43.689\n            ],\n            [\n              -69.69,\n              43.689\n            ],\n            [\n              -69.69,\n              43.877\n            ],\n            [\n              -69.903,\n              43.877\n            ],\n            [\n              -69.903,\n              43.689\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac8e4b07f02db67c134","contributors":{"authors":[{"text":"Buynevich, I. V.","contributorId":96292,"corporation":false,"usgs":true,"family":"Buynevich","given":"I. V.","affiliations":[],"preferred":false,"id":188588,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"FitzGerald, D. M.","contributorId":55038,"corporation":false,"usgs":true,"family":"FitzGerald","given":"D.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":188587,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Parolski, K. F.","contributorId":99173,"corporation":false,"usgs":true,"family":"Parolski","given":"K.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":188589,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70156318,"text":"70156318 - 1999 - Specific conductance, water temperature, and water level data, San Francisco Bay, California, water year 1998","interactions":[],"lastModifiedDate":"2016-07-26T16:28:24","indexId":"70156318","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3914,"text":"Interagency Ecological Program Newsletter","active":true,"publicationSubtype":{"id":10}},"title":"Specific conductance, water temperature, and water level data, San Francisco Bay, California, water year 1998","docAbstract":"<p>Specific conductance and water temperature data are continuously recorded at four sites in San Francisco Bay, California: San Pablo Strait at Point San Pablo, Central San Francisco Bay at Presidio Military Reservation, Pier 24 at Bay Bridge, and South San Francisco Bay at San Mateo Bridge near Foster City (Figure 1). Water level data are recorded only at San Pablo Strait at Point San Pablo. These data were recorded by the Department of Water Resources (DWR) before 1988, by the US Geological Survey (USGS) National Research Program from 1988 to 1989, and by the USGS-DWR cooperative program since 1990. This article presents time-series plots of data from the four sites in San Francisco Bay during water year 1998 (1 October 1997 through 30 September 1998).</p>","publisher":"Interagency Ecological Program for the San Francisco Estuary","usgsCitation":"Buchanan, P.A., 1999, Specific conductance, water temperature, and water level data, San Francisco Bay, California, water year 1998: Interagency Ecological Program Newsletter, v. 12, no. 4, p. 46-53.","productDescription":"8 p","startPage":"46","endPage":"53","numberOfPages":"60","onlineOnly":"N","additionalOnlineFiles":"N","temporalStart":"1997-10-01","temporalEnd":"1998-09-30","costCenters":[{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true},{"id":5079,"text":"Pacific Regional Director's Office","active":true,"usgs":true}],"links":[{"id":308181,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":306957,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://www.water.ca.gov/iep/products/newsletterPrevious.cfm"}],"country":"United States","state":"California","otherGeospatial":"San Francisco Bay","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -122.13088989257814,\n              37.48466628708502\n            ],\n            [\n              -122.3876953125,\n              37.59791208382183\n            ],\n            [\n              -122.41104125976564,\n              37.792422407988575\n            ],\n            [\n              -122.4810791015625,\n              37.791337175930714\n            ],\n            [\n              -122.4810791015625,\n              37.83690319650768\n            ],\n            [\n              -122.31628417968749,\n              37.832564787218985\n            ],\n            [\n              -122.15560913085938,\n              37.67403832629551\n            ],\n            [\n              -122.06771850585939,\n              37.52715361723378\n            ],\n            [\n              -122.13088989257814,\n              37.48466628708502\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"12","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"55fa92d5e4b05d6c4e501ad7","contributors":{"authors":[{"text":"Buchanan, Paul A. 0000-0002-4796-4734 buchanan@usgs.gov","orcid":"https://orcid.org/0000-0002-4796-4734","contributorId":1018,"corporation":false,"usgs":true,"family":"Buchanan","given":"Paul","email":"buchanan@usgs.gov","middleInitial":"A.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":568671,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70022103,"text":"70022103 - 1999 - Use of nitrogen isotopes to determine sources of nitrate contamination in two desert basins in California","interactions":[],"lastModifiedDate":"2018-09-13T16:08:41","indexId":"70022103","displayToPublicDate":"2000-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1934,"text":"IAHS-AISH Publication","active":true,"publicationSubtype":{"id":10}},"title":"Use of nitrogen isotopes to determine sources of nitrate contamination in two desert basins in California","docAbstract":"<p>Nitrogen-15/14 isotope ratios (δ<sup>15</sup>N) were measured in groundwater, infiltrating wastewater, and natural uncontaminated soil to determine the source of high NO<sub>3</sub><sup>-</sup> concentrations in two desert basins at Fort Irwin National Training Center in the Mojave Desert. The abundance and isotopic composition of dissolved nitrogen gas were measured in some of the groundwater samples to determine the effects of denitrification on the abundance and isotopic composition of the NO<sub>3</sub><sup>-</sup>. Delta <sup>15</sup>N-NO<sub>3</sub> values in groundwaters most likely to include sewage effluent ranged from about 11 to 23‰. Delta <sup>15</sup>N values in groundwater not near sources of sewage effluent ranged from 6 to 11‰, a range similar to that found in the overlying soils, which contain large concentrations of leachable NO<sub>3</sub><sup>-</sup> presumed to be of natural origin. Some of the samples with relatively low NO<sub>3</sub><sup>-</sup> concentrations and high δ<sup>15</sup>N values contained excess non-atmospheric nitrogen gas attributed to denitrification. These data indicate that high NO<sub>3</sub><sup>-</sup> concentrations in groundwater unaffected by sewage effluent may result from leaching of naturally occurring nitrogen in desert soils, and that some of the NO<sub>3</sub><sup>-</sup> may be removed by denitrification at the water table.</p><p>Nitrogen-15/14 isotope ratios (δ<sup>15</sup>N) were measured in groundwater, infiltrating wastewater, and natural uncontaminated soil to determine the source of high NO<sub>3</sub><sup>-</sup> concentrations in two desert basins at Fort Irwin National Training Center in the Mojave Desert. The abundance and isotopic composition of dissolved nitrogen gas were measured in some of the groundwater samples to determine the effects of denitrification on the abundance and isotopic composition of the NO<sub>3</sub><sup>-</sup>. Delta <sup>15</sup>N-NO<sub>3</sub> values in groundwaters most likely to include sewage effluent ranged from about 11 to 23 per mil. Delta <sup>15</sup>N values in groundwater not near sources of sewage effluent ranged from 6 to 11 per mil, a range similar to that found in the overlying soils, which contain large concentrations of leachable NO<sub>3</sub><sup>-</sup>presumed to be of natural origin. Some of the samples with relatively low NO<sub>3</sub><sup>-</sup> concentrations and high δ<sup>15</sup>N values contained excess non-atmospheric nitrogen gas attributed to denitrification. These data indicate that high NO<sub>3</sub><sup>-</sup> concentrations in groundwater unaffected by sewage effluent may result from leaching of naturally occurring nitrogen in desert soils, and that some of the NO<sub>3</sub><sup>-</sup> may be removed by denitrification at the water table.</p>","language":"English","publisher":"IAHS-AISH","issn":"01447815","usgsCitation":"Densmore, J., and Bohlke, J., 1999, Use of nitrogen isotopes to determine sources of nitrate contamination in two desert basins in California: IAHS-AISH Publication, v. 260, p. 63-73.","productDescription":"11 p.","startPage":"63","endPage":"73","numberOfPages":"11","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":230852,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","volume":"260","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbf4de4b08c986b329a94","contributors":{"authors":[{"text":"Densmore, J.N. 0000-0002-5345-6613","orcid":"https://orcid.org/0000-0002-5345-6613","contributorId":100882,"corporation":false,"usgs":true,"family":"Densmore","given":"J.N.","affiliations":[],"preferred":false,"id":392373,"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":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true},{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true}],"preferred":true,"id":697145,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70204101,"text":"70204101 - 1999 - Pattern and process of land loss in the Mississippi Delta: A spatial and temporal analysis of wetland habitat change","interactions":[],"lastModifiedDate":"2019-07-03T19:11:57","indexId":"70204101","displayToPublicDate":"1999-12-31T19:07:58","publicationYear":"1999","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Pattern and process of land loss in the Mississippi Delta: A spatial and temporal analysis of wetland habitat change","docAbstract":"<p><span>An earlier investigation (Turner 1997) concluded that most of the coastal wetland loss in Louisiana was caused by the effects of canal dredging, that loss was near zero in the absence of canals, and that land loss had decreased to near zero by the late 1990s. This analysis was based on a 15-min quadrangle (approximately 68,000 ha) scale that is too large to isolate processes responsible for small-scale wetland loss and too small to capture those responsible for large-scale loss. Herein, we conduct a further evaluation of the relationship between direct loss due to canal dredging and all other loss from 1933–1990 using a spatial scale of 4,100 ha that accurately captures local land-loss processes. Data sets for Pontchartrain and Breton basins did not meet the criteria for parametric statistics.&nbsp;</span><span>Regressions of other wetland loss on canal area (i.e., direct loss) for the Birdfoot, Terrebonne, and Calcasieu basins were not significant. Significant positive curvilinear relationships were isolated for the </span><span>Barataria (R</span><sup>2</sup><span>=0.40) and Mermentau (R</span><sup>2</sup><span>=0.29) basins, indicating that the extent of canals is significantly related to wetland loss in these basins. A significant negative relationship (R</span><sup>2</sup><span>=0.361) was found for the Atchafalaya coastal basin which had statistically lower loss rates than the other basins as a whole. When the data were combined for all basins, 9.2% of the variation in other wetland loss was attributable to canals. All significant regressions intercepted the Y-axis at positive loss values indicating that some loss occurred in the absence of canals. We agree with Turner that canals are an important agent in causing wetland loss in coastal Louisiana, but strongly disagree that they are responsible for the vast majority of this loss. We conclude that wetland loss in the Mississippi delta is an ongoing complex process involving several interacting factors and that efforts to create and restore Louisiana’s coastal wetlands must emphasize riverine inputs of freshwater and sediments.</span></p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Recent research in coastal Louisiana : natural system function and response to human influence : a symposium convened by the Louisiana Universities Marine Consortium, February 3-5, 1998, Lafayette, Louisiana","largerWorkSubtype":{"id":12,"text":"Conference publication"},"language":"English","publisher":"Louisiana Sea Grant College Program","usgsCitation":"Day, J.W., Shaffer, G.P., Britsch, L.D., Reed, D.J., Hawes, S., and Cahoon, D.R., 1999, Pattern and process of land loss in the Mississippi Delta: A spatial and temporal analysis of wetland habitat change, <i>in</i> Recent research in coastal Louisiana : natural system function and response to human influence : a symposium convened by the Louisiana Universities Marine Consortium, February 3-5, 1998, Lafayette, Louisiana, p. 193-202.","productDescription":"10 p.","startPage":"193","endPage":"202","costCenters":[{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"links":[{"id":365304,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Louisiana","otherGeospatial":"Louisiana Coastal Zone, Mississippi River Delta","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -90.65917968749999,\n              30.619004797647808\n            ],\n            [\n              -91.16455078125,\n              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J.","contributorId":71903,"corporation":false,"usgs":true,"family":"Reed","given":"Denise","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":765513,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hawes, Suzanne","contributorId":51376,"corporation":false,"usgs":true,"family":"Hawes","given":"Suzanne","email":"","affiliations":[],"preferred":false,"id":765514,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Cahoon, Donald R. 0000-0002-2591-5667 dcahoon@usgs.gov","orcid":"https://orcid.org/0000-0002-2591-5667","contributorId":3791,"corporation":false,"usgs":true,"family":"Cahoon","given":"Donald","email":"dcahoon@usgs.gov","middleInitial":"R.","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":765515,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70206830,"text":"70206830 - 1999 - The ecological condition of estuaries in the Gulf of Mexico","interactions":[],"lastModifiedDate":"2019-11-22T17:52:46","indexId":"70206830","displayToPublicDate":"1999-12-31T17:40:53","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"seriesTitle":{"id":5883,"text":"Cooperator Report","active":true,"publicationSubtype":{"id":1}},"seriesNumber":"620-R-98-004","title":"The ecological condition of estuaries in the Gulf of Mexico","docAbstract":"<p>The Gulf of Mexico is a vast natural resource encompassing the coastal areas of western Florida, Alabama, Mississippi, Louisiana, and Texas, as well as a portion of Mexico. Many estuaries flow into the Gulf of Mexico and serve as nursery grounds for fish, habitat for a wide variety of wildlife, shipping routes, and a source of recreation. Estuarine-dependent species constitute more than 95 percent of the commercial fishery harvests from the Gulf of Mexico, and many important recreational fishery species depend on estuaries during some part of their life cycle. Gulf estuaries are diverse and productive ecosystems that provide a variety of valuable resources, including fish and shellfish, recreation, transportation, and water supply. </p><p>Assessing the overall condition of Gulf of Mexico estuaries required incorporating data from other federal, state, and local monitoring programs to augment the information on ecological indicators collected by the U.S. Environmental Protection Agency’s (USEPA) Environmental Monitoring and Assessment Program (EMAP). The resulting document would provide a synthesis of the available knowledge about the condition of Gulf of Mexico estuaries. This document is intended for use by scientists and other citizens concerned with the ecological condition of estuaries, as well as by managers and lawmakers interested in the sustained use of estuaries for commercial and recreational purposes. It also addresses public concerns about the aesthetic quality of coastal areas vital to tourism and recreation. By producing this report on the ecological condition of estuaries in the Gulf of Mexico, we have taken one step in assessing the health of this environmental resource. We have produced an environmental “report card” to be used as a guide in the evaluation of management decisions and research directions. </p><p>This report is organized in three parts: (1) an introduction that gives background information on the Gulf of Mexico, estuarine ecology, and the factors that impact estuaries in the gulf, (2) the main section on priority ecological indicators used to measure the condition of estuaries in the gulf and (3) an ecological report card that summarizes the data on ecological indicators and provides a rating of the condition of estuaries in each gulf state and for gulf estuaries overall. Many of the ratings were based on the percent area of estuaries in each state exhibiting degraded or adverse levels of an indicator. </p><p>Eutrophication, a condition of high nutrients often resulting in low oxygen levels and other adverse effects, is an important water quality concern for estuaries along the gulf coast. The National Oceanic and Atmospheric Administration (NOAA) has compared the Gulf of Mexico to other coastal regions like the middle Atlantic and has ranked the Gulf of Mexico as having the highest number of point sources of nutrients and the highest percentage of land use devoted to agriculture. We evaluated monitoring data for nitrogen, chlorophyll, and dissolved oxygen as indicators of eutrophication. Although most of the estuaries exhibited high nitrogen or chlorophyll or low dissolved oxygen concentrations at least once during a survey, many times these conditions were observed in small rivers or bayous rather than in the entire estuary. Often, the percent area affected was low. The gulf estuaries had moderate conditions overall for nutrients and dissolved oxygen. Definite nutrient problems were observed in &gt;25% of the estuarine area in Louisiana and Texas and definite dissolved oxygen problems were observed in Alabama. </p><p>Contaminants in estuarine sediments provide evidence of the accumulation of chemicals from anthropogenic sources. We compared the concentrations of sediment contaminants to established guideline values to determine the proportion of estuarine area that could have potential adverse effects on living organisms. Although detectable levels of contaminants were measured in almost every estuary in the Gulf of Mexico, &lt;25% of the estuarine area in all states had contaminant concentrations that exceeded these guidelines. </p><p>Wetlands are integral parts of estuarine systems. Declining acreage means habitat loss that may be the result of commercial and residential development, hydrologic alterations, or dredge and fill operations. The Gulf of Mexico region contains more than 50% of the coastal wetland acreage in the U.S. and yet it also has the highest rate of coastal wetland loss. Nine of the top ten estuarine drainage areas ranked by total wetland area are in the Gulf of Mexico region. The most current estimates of total wetland loss over the past 200 years range from 41% to 54% for the gulf states. Although coastal wetlands continue to be altered or destroyed, some estimates indicate that the rate of loss has slowed. All gulf states were rated as having severe problems with wetland loss. </p><p>The condition of benthic (bottom-dwelling) invertebrates, fish and shellfish, birds, and threatened and endangered species was used to evaluate the health of estuarine fauna. Degraded benthic communities inhabited &lt;25% of the estuarine area in all gulf states except for Texas. Commercial fish and shellfish landings may be used as an indicator of population stability while fish biomarkers are used to measure the health of individuals in the population. Commercial landings of the top four fisheries (shrimp, menhaden, blue crab, and oyster) are stable in the gulf states while fish biomarkers indicate fair to poor fish health in Alabama and Texas and good fish health elsewhere. Coastal and marine bird populations appear to be in good condition throughout the gulf. Four threatened or endangered species inhabit coastal areas in the Gulf of Mexico: brown pelican, Gulf sturgeon, manatee, and Kemp’s ridley sea turtle. In general, populations of these species are in good to fair condition in the gulf states. </p><p>Public health indicators include shellfish bed closures and chemicals found in edible fish tissue. Harvest of shellfish (primarily oyster in the Gulf of Mexico) is restricted or prohibited when concentrations of bacteria or other pathogens reach levels that could impair human health. The gulf states contain the most acreage of shellfish-growing waters in the U.S. but also have the most acreage restricted for harvest. All gulf states except Mississippi have &gt;25% of their shellfish-growing waters restricted for harvest, mostly due to pollution from wastewater treatment plants or other upstream sources. Advisories may be issued that limit consumption when the concentrations of chemicals in fish tissue exceed levels known to be harmful to humans. Although seafood consumption advisories have been issued in all gulf states, the percent of the fish population with high concentrations of contaminants is relatively low in the gulf overall.</p>","language":"English","publisher":"U.S. Environmental Protection Agency","usgsCitation":"U.S. Environmental Protection Agency, 1999, The ecological condition of estuaries in the Gulf of Mexico: Cooperator Report 620-R-98-004, viii, 71 p.","productDescription":"viii, 71 p.","costCenters":[{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"links":[{"id":369514,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":369513,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://www.epa.gov/sites/production/files/2015-08/documents/ecocondestuariesgom_print.pdf"}],"country":"United States","state":"Alabama, Florida, Louisiana, 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,{"id":70206371,"text":"70206371 - 1999 - Integrated use of continuous seismic-reflection profiling and ground-penetrating radar methods at John's Pond, Cape Cod, Massachusetts","interactions":[],"lastModifiedDate":"2019-10-31T10:02:08","indexId":"70206371","displayToPublicDate":"1999-12-31T09:55:11","publicationYear":"1999","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Integrated use of continuous seismic-reflection profiling and ground-penetrating radar methods at John's Pond, Cape Cod, Massachusetts","docAbstract":"<p class=\"basictext\">Continuous seismic-reflection profiling (CSP) and ground-penetrating radar (GPR) surveys were conducted by the U.S. Geological Survey in April 1998 over the northern part of John’s Pond, a glacial kettle pond southeast of Otis Air National Guard Base, Cape Cod, Massachusetts. The surveys were conducted to delineate the types and thickness of sedimentary units that may control the infiltration of contaminated groundwater into John’s Pond.</p><p class=\"basictext\">Sand-and-gravel deposits, collapse features and recent organic sediments were imaged with the CSP and GPR methods. Hummocky to chaotic reflections were interpreted as sand- and-gravel deposits. Slightly wavy, parallel reflections located in depressions in the sand-and- gravel deposits were interpreted as filled collapse features. Lower amplitude, horizontal, laminar reflections were interpreted as organic sediments. Entrapped methane gas within some of the organic sediments created a reflection zone that obscured deeper reflections in the CSP records.</p><p class=\"basictext\">The CSP and GPR methods provide complementary information over most of the surveyed part of the pond. The methods detect similar interfaces, but a particular interface may produce a stronger reflection in one record than in the other. For example, regions of the pond containing organic sediments with entrapped methane gas, which prevent penetration of the acoustic signal, were penetrated and imaged by GPR. Conversely, regions of the pond containing electrically conductive sediments or deep water, which attenuate the GPR signal, were imaged using CSP. The CSP and GPR data were interpreted to generate a bathymetric map and a map of sediment type and thickness beneath John’s Pond.</p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Proceedings of the symposium on the application of geophysics to engineering and environmental problems : March 14-18, 1999, Oakland, CA","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"Symposium on the Application of Geophysics to Engineering and Environmental Problems","conferenceDate":"March 14-18, 1999","conferenceLocation":"Oakland, CA","language":"English","publisher":"Environmental and Engineering Geophysical Society","usgsCitation":"Powers, C., Haeni, F., and Smith, S., 1999, Integrated use of continuous seismic-reflection profiling and ground-penetrating radar methods at John's Pond, Cape Cod, Massachusetts, <i>in</i> Proceedings of the symposium on the application of geophysics to engineering and environmental problems : March 14-18, 1999, Oakland, CA, Oakland, CA, March 14-18, 1999, p. 359-368.","productDescription":"10 p.","startPage":"359","endPage":"368","costCenters":[{"id":493,"text":"Office of Ground Water","active":true,"usgs":true}],"links":[{"id":368803,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":368802,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://water.usgs.gov/ogw/bgas/publications/SAGEEP99_041/"}],"country":"United States","state":"Massachusetts","otherGeospatial":"Cape Cod, John's Pond","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -70.52149772644043,\n              41.63841061524859\n            ],\n            [\n              -70.53325653076172,\n              41.62044728626882\n            ],\n            [\n              -70.52149772644043,\n              41.61589150376494\n            ],\n            [\n              -70.51016807556152,\n              41.63462590144711\n            ],\n            [\n              -70.52149772644043,\n              41.63841061524859\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Powers, C.J.","contributorId":182511,"corporation":false,"usgs":false,"family":"Powers","given":"C.J.","email":"","affiliations":[],"preferred":false,"id":774315,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Haeni, F.P.","contributorId":87105,"corporation":false,"usgs":true,"family":"Haeni","given":"F.P.","affiliations":[],"preferred":false,"id":774316,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Smith, S.","contributorId":20698,"corporation":false,"usgs":true,"family":"Smith","given":"S.","email":"","affiliations":[],"preferred":false,"id":774317,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70194855,"text":"70194855 - 1999 - Tracing sediment dispersal on nourished beaches: Two case studies","interactions":[],"lastModifiedDate":"2018-01-24T08:03:45","indexId":"70194855","displayToPublicDate":"1999-12-31T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Tracing sediment dispersal on nourished beaches: Two case studies","docAbstract":"<p>The event- to decade-scale patterns of sediment dispersal on two artificially nourished beaches have been mapped using a combination of geophysical surveys, closely-spaced vibracores, and repeated beach profiles. At both Wrightsville Beach, NC and Folly Island, SC the sediment used for beach nourishment is macroscopically distinct from native sediment and can be used to identify sediment transport pathways and infer mechanisms for across-shelf transport. The data from both sites demonstrate that significant quantities of nourishment sediment are being transported seaward onto the inner continental shelf. The time and space scales of this transport are of engineering interest for the planning, design and long-term maintenance of nourished beaches.</p>","largerWorkType":{"id":24,"text":"Conference Paper"},"largerWorkTitle":"Coastal Sediments '99","conferenceTitle":"Fourth International Symposium on Coastal Engineering and Science of Coastal Sediment Processes","conferenceDate":"June 21-23, 1999","conferenceLocation":"Long Island, NY","language":"English","publisher":"American Society of Civil Engineers","isbn":"9780784404362","usgsCitation":"Thieler, E.R., Gayes, P.T., Schwab, W.C., and Harris, M., 1999, Tracing sediment dispersal on nourished beaches: Two case studies, <i>in</i> Coastal Sediments '99, Long Island, NY, June 21-23, 1999, p.  2118-2136.","productDescription":"22 p.","startPage":" 2118","endPage":"2136","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":350554,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"North Carolina, South Carolina","otherGeospatial":"Folly Island, Wrightsville Beach","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -79.95849609375,\n              32.9257074887604\n            ],\n            [\n              -76.025390625,\n              32.9257074887604\n            ],\n            [\n              -76.025390625,\n              35.191766965947394\n            ],\n            [\n              -79.95849609375,\n              35.191766965947394\n            ],\n            [\n              -79.95849609375,\n              32.9257074887604\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5a69a95fe4b06e28e9c81a97","contributors":{"authors":[{"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":725675,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gayes, Paul T.","contributorId":194931,"corporation":false,"usgs":false,"family":"Gayes","given":"Paul","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":725676,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Schwab, William C. 0000-0001-9274-5154 bschwab@usgs.gov","orcid":"https://orcid.org/0000-0001-9274-5154","contributorId":417,"corporation":false,"usgs":true,"family":"Schwab","given":"William","email":"bschwab@usgs.gov","middleInitial":"C.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":725677,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Harris, M. Scott","contributorId":7795,"corporation":false,"usgs":true,"family":"Harris","given":"M. Scott","affiliations":[],"preferred":false,"id":725678,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70188274,"text":"70188274 - 1999 - Development of a long-term ecological monitoring program in Denali National Park and Preserve, Alaska (USA)","interactions":[],"lastModifiedDate":"2017-06-07T15:31:52","indexId":"70188274","displayToPublicDate":"1999-12-31T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"seriesNumber":"RMRS-P-12 ","title":"Development of a long-term ecological monitoring program in Denali National Park and Preserve, Alaska (USA)","docAbstract":"<p>A Long-term Ecological Monitoring (LTEM) program began at Denali National Park and Preserve, Alaska (USA) in 1992, as a prototype for subarctic parks. The early history of the Denali LTEM program provides insight into the challenges that can arise during monitoring program development. The Denali program has thus far taken a watershed approach, involving collocation of study effort for a mix of abiotic and biotic attributes within a small, headwater stream (Rock Creek) which crosses the tundra-taiga boundary. An initial effort at integration and synthesis of meteorological, vegetation, small mammal and passerine bird data for the first 7 years of the program found few correlations, but power was low. We will now attempt to balance the intensive work in Rock Creek by developing a cost-effective sampling design that includes more of the park. 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,{"id":70195491,"text":"70195491 - 1999 - Modern accumulation rates and a sediment budget for the Eel shelf: a flood-dominated depositional environment","interactions":[],"lastModifiedDate":"2018-02-16T14:14:52","indexId":"70195491","displayToPublicDate":"1999-12-31T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2667,"text":"Marine Geology","active":true,"publicationSubtype":{"id":10}},"title":"Modern accumulation rates and a sediment budget for the Eel shelf: a flood-dominated depositional environment","docAbstract":"<p>The northern California continental margin is periodically impacted by geologically significant storms, which have a marked influence on terrigenous sediment supply, flood deposition, and long-term accumulation of fine-grained sediment on the Eel shelf. Accumulation of Eel River muds on the adjacent shelf was investigated using 210Pb and 137Cs geochronologies, in order to understand the fate of sediment discharged by the Eel River and to relate patterns of net sediment accumulation (100-yr time scale) to sediment dynamics. 210Pb data demonstrate that modern accumulation of river mud occurs from the 50-m isobath seaward. Across-shelf accumulation rates decrease from maximum mid-shelf values of 0.6–1.7 g cm2 yr1 to values of 0.2–0.4 g cm2 yr1 at the shelf break, with a spatially weighted mean of 0.5 g cm2 yr1 (0.4 cm=yr) for the entire shelf. 210Pbxs sediment-depth profiles from the region of highest accumulation rate are characterized by subsurface intervals of low and uniform activity, which are produced by flood deposition. In some cores, particular 210Pbxs activity intervals may be associated with major Eel River floods of 1955, 1964, and 1974. It is postulated that, because of the coincidence of high-river-flow events and southerly winds during cyclonic winter storms, net northward transport allows for preferential deposition of fine-grained sediment north of the river mouth. Over the past ¾100 years, fluvial sediment input combined with marine dispersal processes have produced a mid-shelf depocenter, evident by both the spatial distribution of 210Pb accumulation rates and by clay-rich flood layers partially preserved in shelf deposits. A fine-grained sediment budget for the dispersal system, based on hydrological data and 210Pb geochronologies, demonstrates that a maximum of ¾20% (3 ð 109 kg=yr) of the mean annual supply of fluvial mud (14 ð 109 kg=yr) is trapped on the shelf. The results of this study demonstrate that: (1) short-term sedimentation processes associated with floods can influence sediment accumulation on longer time scales; and (2) a major fraction of fine-grained sediment supplied to tectonically active margins by flood-prone mountainous rivers bypasses narrow continental shelves.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/S0025-3227(98)00115-7","usgsCitation":"Sommerfield, C.K., and Nittrouer, C.A., 1999, Modern accumulation rates and a sediment budget for the Eel shelf: a flood-dominated depositional environment: Marine Geology, v. 154, p. 227-241, https://doi.org/10.1016/S0025-3227(98)00115-7.","productDescription":"15 p.","startPage":"227","endPage":"241","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":351742,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"154","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5aff12bbe4b0da30c1bfd317","contributors":{"authors":[{"text":"Sommerfield, Christopher K.","contributorId":9820,"corporation":false,"usgs":true,"family":"Sommerfield","given":"Christopher","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":728880,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nittrouer, Charles A.","contributorId":51218,"corporation":false,"usgs":false,"family":"Nittrouer","given":"Charles","email":"","middleInitial":"A.","affiliations":[{"id":13553,"text":"University of Washington-Seattle","active":true,"usgs":false}],"preferred":false,"id":728881,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70244056,"text":"70244056 - 1999 - Chapter 7: Studies of short-lived radionuclides in Santorini volcanics","interactions":[],"lastModifiedDate":"2023-05-31T16:53:17.527913","indexId":"70244056","displayToPublicDate":"1999-12-08T11:48:01","publicationYear":"1999","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1790,"text":"Geological Society, London, Memoirs","active":true,"publicationSubtype":{"id":10}},"title":"Chapter 7: Studies of short-lived radionuclides in Santorini volcanics","docAbstract":"<p><span>Disequilibria between the short-lived radioactive nuclides&nbsp;</span><sup>226</sup><span>Ra,&nbsp;</span><sup>230</sup><span>Th and&nbsp;</span><sup>238</sup><span>U in young volcanic rocks can be used both for dating the time of crystallisation of a rock, and as isotopic tracers of the sources of magmas and the chemical evolution of volcanic systems. The principles of these methods have been reviewed extensively elsewhere (Condomines&nbsp;</span><i>et al</i><span>. 1988; Gill&nbsp;</span><i>et al</i><span>. 1992; Gill &amp; Condomines 1992; Macdougall 1995). In this chapter, we present new&nbsp;</span><sup>238</sup><span>U-</span><sup>230</sup><span>Th-</span><sup>226</sup><span>Ra disequilibria data for the Thera pyroclastics and for selected lavas. These data complement the radiogenic isotopic data presented in Chapter 6 on the compositional evolution through time of the pyroclastic ejecta. In particular, we find that the (</span><sup>230</sup><span>Th/</span><sup>232</sup><span>Th) isotopic ratio corrected to the time of eruption varies in a systematic way with time through the second cycle of the Thera pyroclastics and variations in this ratio are correlated with the variations of&nbsp;</span><sup>87</sup><span>Sr/</span><sup>86</sup><span>Sr,&nbsp;</span><sup>143</sup><span>Nd/</span><sup>144</sup><span>Nd and Pb isotopes.</span></p>","language":"English","publisher":"Geological Society of London","doi":"10.1144/GSL.MEM.1999.019.01.07","usgsCitation":"Druitt, T.H., Edwards, L., Mellors, R.M., Pyle, D., Sparks, R.S., Lanphere, M.A., Davies, M., and Barreirio, B., 1999, Chapter 7: Studies of short-lived radionuclides in Santorini volcanics: Geological Society, London, Memoirs, v. 19, no. 1, p. 118-128, https://doi.org/10.1144/GSL.MEM.1999.019.01.07.","productDescription":"11 p.","startPage":"118","endPage":"128","costCenters":[],"links":[{"id":417609,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Greece","otherGeospatial":"Santorini","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 25.353444,36.332103 ], [ 25.353444,36.482241 ], [ 25.488055,36.482241 ], [ 25.488055,36.332103 ], [ 25.353444,36.332103 ] ] ] } } ] }","volume":"19","issue":"1","noUsgsAuthors":false,"publicationDate":"1999-12-09","publicationStatus":"PW","contributors":{"authors":[{"text":"Druitt, T. H.","contributorId":60662,"corporation":false,"usgs":true,"family":"Druitt","given":"T.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":874331,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Edwards, L.","contributorId":91976,"corporation":false,"usgs":true,"family":"Edwards","given":"L.","affiliations":[],"preferred":false,"id":874332,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mellors, R. M.","contributorId":30542,"corporation":false,"usgs":false,"family":"Mellors","given":"R.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":874333,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Pyle, D. M.","contributorId":106007,"corporation":false,"usgs":false,"family":"Pyle","given":"D. M.","affiliations":[],"preferred":false,"id":874334,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Sparks, R. S. J.","contributorId":46686,"corporation":false,"usgs":false,"family":"Sparks","given":"R.","email":"","middleInitial":"S. J.","affiliations":[],"preferred":false,"id":874335,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Lanphere, Marvin A. alder@usgs.gov","contributorId":2696,"corporation":false,"usgs":true,"family":"Lanphere","given":"Marvin","email":"alder@usgs.gov","middleInitial":"A.","affiliations":[],"preferred":true,"id":874336,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Davies, M.","contributorId":54726,"corporation":false,"usgs":true,"family":"Davies","given":"M.","affiliations":[],"preferred":false,"id":874337,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Barreirio, B.","contributorId":11113,"corporation":false,"usgs":true,"family":"Barreirio","given":"B.","email":"","affiliations":[],"preferred":false,"id":874338,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70244052,"text":"70244052 - 1999 - Chapter 6 Geochemistry, isotopic composition and petrogenetic modelling of the Thera pyroclastics","interactions":[],"lastModifiedDate":"2023-05-31T16:22:39.930277","indexId":"70244052","displayToPublicDate":"1999-12-08T10:57:22","publicationYear":"1999","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1790,"text":"Geological Society, London, Memoirs","active":true,"publicationSubtype":{"id":10}},"title":"Chapter 6 Geochemistry, isotopic composition and petrogenetic modelling of the Thera pyroclastics","docAbstract":"<p><span>This chapter examines the major element, trace element, and isotope geochemistry of the Thera pyroclastics, and places it in the context of the geochemical evolution of the whole volcanic field. Geochemical studies to date have been undertaken predominantly on the lavas, and the pyroclastic succession has been relatively neglected. The data on the pyroclastics are taken from Druitt (1983), Mellors (1988), Pyle (19906), and Edwards (1994). Wholerock analyses and sample descriptions are given in Appendix 2. Most analyses are of a single pumice or scoria lump, although some are combinations of several small clasts and a few are compositionally banded. The rock classification scheme used throughout the memoir is shown in Fig. 6.1. Previous isotopic studies on Santorini are also largely confined to the lavas, and no detailed studies had been carried out on the pyroclastic rocks. In this chapter we present new&nbsp;</span><sup>87</sup><span>Sr/</span><sup>86</sup><span>Sr,&nbsp;</span><sup>143</sup><span>Nd/</span><sup>144</sup><span>Nd,&nbsp;</span><sup>206</sup><span>Pb/</span><sup>204</sup><span>Pb,&nbsp;</span><sup>207</sup><span>Pb/</span><sup>204</sup><span>Pb,&nbsp;</span><sup>208</sup><span>Pb/</span><sup>204</sup><span>Pb and δ</span><sup>18</sup><span>О isotopic data on 40 samples of the Thera pyroclastics. We also include some measurements of hydrogen isotopes. Methods of geochemical and isotopic analysis are described in Appendix 1. This chapter also presents some quantitative models of fractional crystallization and assimilation of crustal rocks. The geochemical data and models point towards the importance of crystal fractionation, magma mixing and assimilation of continental crust in magma genesis at Santorini. The chapter also documents temporal changes in geochemical features of Santorini magmas.</span></p>","language":"English","publisher":"Geological Society of London","doi":"10.1144/GSL.MEM.1999.019.01.06","usgsCitation":"Druitt, T.H., Edwards, L., Mellors, R.M., Pyle, D., Sparks, R.S., Lanphere, M.A., Davies, M., and Barreirio, B., 1999, Chapter 6 Geochemistry, isotopic composition and petrogenetic modelling of the Thera pyroclastics: Geological Society, London, Memoirs, v. 19, no. 1, p. 89-116, https://doi.org/10.1144/GSL.MEM.1999.019.01.06.","productDescription":"28 p.","startPage":"89","endPage":"116","costCenters":[],"links":[{"id":417605,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Greece","otherGeospatial":"Santorini","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 25.353444,36.332103 ], [ 25.353444,36.482241 ], [ 25.488055,36.482241 ], [ 25.488055,36.332103 ], [ 25.353444,36.332103 ] ] ] } } ] }","volume":"19","issue":"1","noUsgsAuthors":false,"publicationDate":"1999-12-09","publicationStatus":"PW","contributors":{"authors":[{"text":"Druitt, T. H.","contributorId":60662,"corporation":false,"usgs":true,"family":"Druitt","given":"T.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":874299,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Edwards, L.","contributorId":91976,"corporation":false,"usgs":true,"family":"Edwards","given":"L.","affiliations":[],"preferred":false,"id":874300,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mellors, R. M.","contributorId":30542,"corporation":false,"usgs":false,"family":"Mellors","given":"R.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":874301,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Pyle, D. M.","contributorId":106007,"corporation":false,"usgs":false,"family":"Pyle","given":"D. M.","affiliations":[],"preferred":false,"id":874302,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Sparks, R. S. J.","contributorId":46686,"corporation":false,"usgs":false,"family":"Sparks","given":"R.","email":"","middleInitial":"S. J.","affiliations":[],"preferred":false,"id":874303,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Lanphere, Marvin A. alder@usgs.gov","contributorId":2696,"corporation":false,"usgs":true,"family":"Lanphere","given":"Marvin","email":"alder@usgs.gov","middleInitial":"A.","affiliations":[],"preferred":true,"id":874304,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Davies, M.","contributorId":54726,"corporation":false,"usgs":true,"family":"Davies","given":"M.","affiliations":[],"preferred":false,"id":874305,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Barreirio, B.","contributorId":11113,"corporation":false,"usgs":true,"family":"Barreirio","given":"B.","email":"","affiliations":[],"preferred":false,"id":874306,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
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