{"pageNumber":"1865","pageRowStart":"46600","pageSize":"25","recordCount":46603,"records":[{"id":70206346,"text":"70206346 - null - Integrated geophysical characterization of the Winthrop Landfill Southern Flow Path, Winthrop, Maine","interactions":[],"lastModifiedDate":"2019-10-31T07:46:54","indexId":"70206346","displayToPublicDate":"2002-12-31T17:03:47","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Integrated geophysical characterization of the Winthrop Landfill Southern Flow Path, Winthrop, Maine","docAbstract":"<p>The U.S. Geological Survey (USGS), in cooperation with United Technologies Corporation, used an integrated suite of borehole, surface, and water-borne geophysical methods near the site of the former Winthrop Landfill, Winthrop, Maine, to investigate the hydrogeology controlling the transport of leachate from the landfill to nearby Annabessacook Lake. During the fall of 2000 and summer of 2001, the USGS conducted borehole electromagnetic (EM) induction and gamma logging, and inductive terrain-conductivity, two-dimensional (2D) resistivity, continuous seismic reflection, and magnetic surveys.</p><p>The objectives of this integrated geophysical study were to provide constraints on the location and extent of the southern flow path(s) of contamination from the landfill to the lake; identify shoreline seep geophysical signatures; identify potentially hidden seeps in the lake; and determine depth to bedrock below Annabessacook Lake in the study area.</p><p>Interpretation of surface 2D resistivity, magnetic, and inductive terrain-conductivity data and borehole EM logs delineates an electrically conductive anomaly consistent with a leachate plume moving from the current landfill boundary southward through the overburden to the shores of Annabessacook Lake. Surface and borehole geophysical data collected south and southeast of the landfill indicate the presence of discrete, shallow conductive anomalies at the southeastern edge of the landfill and near the lakeshore. The conductive anomalies appear at increasing depths closer to the lake. Magnetic anomalies offshore confirm the presence of iron-rich landfill leachate discharging into the lake south of the landfill. High-resolution swept-frequency seismic data used to map sediment and grain size distribution in the lake sub-bottom along the shoreline identified sediment-infilled bedrock lows that may act as conduits for contaminant migration.</p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Proceedings: Symposium on the application of geophysics to engineering and environmental problems","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"Symposium on the application of geophysics to engineering and environmental problems","conferenceDate":"February 10-14, 2002","conferenceLocation":"Las Vegas, NV","language":"English","publisher":"Environmental and Engineering Geophysical Society","usgsCitation":"Dawson, C.B., Lane, J., White, E.A., and Belaval, M., Integrated geophysical characterization of the Winthrop Landfill Southern Flow Path, Winthrop, Maine, <i>in</i> Proceedings: Symposium on the application of geophysics to engineering and environmental problems, Las Vegas, NV, February 10-14, 2002, 22 p.","productDescription":"22 p.","costCenters":[{"id":493,"text":"Office of Ground Water","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"links":[{"id":368775,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":368774,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://water.usgs.gov/ogw/bgas/publications/SAGEEP02_13ESC6/"}],"country":"United States","state":"Maine","city":"Winthrop","otherGeospatial":"Winthrop Landfill","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -69.9964714050293,\n              44.269419395641016\n            ],\n            [\n              -69.9580192565918,\n              44.269419395641016\n            ],\n            [\n              -69.9580192565918,\n              44.31561943401762\n            ],\n            [\n              -69.9964714050293,\n              44.31561943401762\n            ],\n            [\n              -69.9964714050293,\n              44.269419395641016\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Dawson, Cian B. cbdawson@usgs.gov","contributorId":1890,"corporation":false,"usgs":true,"family":"Dawson","given":"Cian","email":"cbdawson@usgs.gov","middleInitial":"B.","affiliations":[{"id":503,"text":"Office of Water Quality","active":true,"usgs":true}],"preferred":true,"id":774237,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lane, John W. Jr. 0000-0002-3558-243X","orcid":"https://orcid.org/0000-0002-3558-243X","contributorId":210076,"corporation":false,"usgs":true,"family":"Lane","given":"John W.","suffix":"Jr.","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":486,"text":"OGW Branch of Geophysics","active":true,"usgs":true},{"id":34685,"text":"Dakota Water Science Center","active":true,"usgs":true},{"id":493,"text":"Office of Ground Water","active":true,"usgs":true}],"preferred":true,"id":774238,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"White, Eric A. 0000-0002-7782-146X eawhite@usgs.gov","orcid":"https://orcid.org/0000-0002-7782-146X","contributorId":1737,"corporation":false,"usgs":false,"family":"White","given":"Eric","email":"eawhite@usgs.gov","middleInitial":"A.","affiliations":[],"preferred":true,"id":774239,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Belaval, Marcel 0000-0002-4049-6798","orcid":"https://orcid.org/0000-0002-4049-6798","contributorId":207205,"corporation":false,"usgs":false,"family":"Belaval","given":"Marcel","email":"","affiliations":[{"id":37476,"text":"U.S. EPA, Region 1","active":true,"usgs":false}],"preferred":false,"id":774240,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70204765,"text":"70204765 - null - Vegetation pattern on channel features in the Passage Creek Gorge, Virginia","interactions":[],"lastModifiedDate":"2019-08-14T10:53:25","indexId":"70204765","displayToPublicDate":"1983-08-14T10:46:13","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1195,"text":"Castanea","active":true,"publicationSubtype":{"id":10}},"title":"Vegetation pattern on channel features in the Passage Creek Gorge, Virginia","docAbstract":"<div class=\"item-view-info enhanced-layout-view-info\" data-qa=\"item-view-info\"><div class=\"tabs-content\" data-tabs-content=\"content-tabs\"><div id=\"metadata_info_tab_contents\" class=\"tabs-panel is-active pan\" aria-labelledby=\"metadata_info_tab_contents-label\"><div><div><div><div><div class=\"mtl mbxl\" data-ajax=\"false\"><div class=\"break-with-hyphens\"><p>Persistent distribution patterns of woody vegetation within the bottomland forest of Passage Creek, Virginia, were related to fluvial landforms, channel geometry, streamflow characteristics, and sediment-size characteristics. Vegetation patterns were determined from species presence as observed in transects and traverses on landforms developed along the stream. Distinct species distributional patterns were found on four common fluvial geomorphic landforms: depositional bar, active-channel shelf, floodplain, and terrace. Independent hydrologic characteristics (flow duration and flood frequency) were determined for each of the landforms. Vegetation data were analyzed by binary discriminant analysis, principal components analysis, and detrended correspondence analysis. Results and related field observations suggest that certain species are significantly associated with specific fluvial landforms. Vegetation patterns appear to develop more as a result of hydrologic processes associated with each fluvial landform rather than from sediment-size characteristics. Flood disturbance may be an important factor in maintaining the vegetation patterns, which may therefore be used as indicators for particular hydrogeomorphic site conditions.</p></div></div></div></div></div></div></div></div></div>","language":"English","publisher":"Wiley","doi":"10.2307/1940528","usgsCitation":"Hupp, C.R., Vegetation pattern on channel features in the Passage Creek Gorge, Virginia: Castanea, v. 48, no. 2, p. 62-72, https://doi.org/10.2307/1940528.","productDescription":"11 p.","startPage":"62","endPage":"72","numberOfPages":"11","costCenters":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"links":[{"id":366548,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Virginia","otherGeospatial":"Passage Creek","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -78.25286865234375,\n              38.958340924837714\n            ],\n            [\n              -78.35861206054687,\n              38.99570671505043\n            ],\n            [\n              -78.65249633789062,\n              38.753012320665185\n            ],\n            [\n              -78.84063720703123,\n              38.39118617958438\n            ],\n            [\n              -78.75,\n              38.35350340353833\n            ],\n            [\n              -78.46023559570312,\n              38.687653678261704\n            ],\n            [\n              -78.25286865234375,\n              38.958340924837714\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"48","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Hupp, Cliff R. 0000-0003-1853-9197 crhupp@usgs.gov","orcid":"https://orcid.org/0000-0003-1853-9197","contributorId":2344,"corporation":false,"usgs":true,"family":"Hupp","given":"Cliff","email":"crhupp@usgs.gov","middleInitial":"R.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":768382,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70182009,"text":"70182009 - No Year - Sand and gravel resources of Puerto Rico","interactions":[],"lastModifiedDate":"2023-08-21T14:56:42.459518","indexId":"70182009","displayToPublicDate":"2003-12-31T00:00:00","noYear":true,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":6,"text":"USGS Unnumbered Series"},"title":"Sand and gravel resources of Puerto Rico","docAbstract":"<p><span>Many of Puerto Rico's beaches are eroding, and though rates of erosion vary, it is a major concern for the tourism and residential development industries. More than 85 percent of the population lives within 7 kilometers of the coast and they are heavily dependent on tourists that are attracted by the island's beaches and coral reefs. High-quality scientific data are needed to help formulate public policy regarding residential and commercial construction along the coast, beach replenishment, and future use of marine resources. Scientists have long recognized that the causes of coastal land loss are not limited to a relative rise in sea level, but can be manmade as well. For example, sediment supply to beaches especially along the north shore of Puerto Rico has been strongly affected by upstream river channeling, dam construction, various agricultural practices, paving and urbanization, as well as shallow-water oceanographic processes. The response to coastal erosion in Puerto Rico has been mostly crisis based leading to engineered solutions that have a negative effect on the coastal environment.</span></p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/70182009","usgsCitation":"Rodriguez, R.W., Sand and gravel resources of Puerto Rico, HTML Document, https://doi.org/10.3133/70182009.","productDescription":"HTML Document","onlineOnly":"Y","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":335455,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/fs/sand-gravel/","text":"Report","linkFileType":{"id":5,"text":"html"},"description":"Report"},{"id":335463,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg"}],"country":"United States","otherGeospatial":"Puerto 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