{"pageNumber":"876","pageRowStart":"21875","pageSize":"25","recordCount":46885,"records":[{"id":70074776,"text":"ofr20071047SRP033 - 2007 - Jurassic magmatism in Dronning Maud Land: synthesis of results of the MAMOG project","interactions":[],"lastModifiedDate":"2014-02-03T15:34:48","indexId":"ofr20071047SRP033","displayToPublicDate":"2007-01-01T15:13:00","publicationYear":"2007","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":"2007-1047-SRP-033","title":"Jurassic magmatism in Dronning Maud Land: synthesis of results of the MAMOG project","docAbstract":"The Jurassic Karoo large igneous province (LIP) of Antarctica, and its conjugate margin in southern Africa, \nis critical for investigating important questions about the relationship of basaltic LIPs to mantle plumes. Detailed \naerogeophysical, structural, anisotropy of magnetic susceptibility (AMS), geochronological and geochemical \ninvestigations completed under the British Antarctic Survey’s MAMOG project have provided some of the answers. \nAcross most of the area, magma volumes were small compared to those in southern Africa. Jurassic dikes intruding the \nArchean craton are sparse and the Jutulstraumen trough, a Jurassic rift, is interpreted, from aerogeophysical data, as \nlargely amagmatic. The largest volumes of magma were emplaced along the margin of the craton and close to the \nAfrica-Antarctica rift. Although dikes were emplaced by both vertical and horizontal flow, overwhelmingly magmas in \nDronning Maud Land were locally derived, and not emplaced laterally from distant sources. Basaltic magmatism was \nprotracted in Dronning Maud Land (several dike emplacement episodes between ~206 and 175 Ma), and the small \nmagma volumes resulted in highly diverse magma compositions, including picrites and ferropicrites interpreted to have \nbeen derived from hot mantle in a mantle plume. The protracted magmatism before the locally ~177 Ma flood lava \neruptions, and evidence for a radiating dike swarm, favor a model of mantle plume incubation for 20-30 million years \nbefore flood lava eruption.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP033","usgsCitation":"Leat, P., Curtis, M., Riley, T., and Ferraccioli, F., 2007, Jurassic magmatism in Dronning Maud Land: synthesis of results of the MAMOG project: U.S. Geological Survey Open-File Report 2007-1047-SRP-033, 4 p., https://doi.org/10.3133/ofr20071047SRP033.","productDescription":"4 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":281930,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP033.JPG"},{"id":281926,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp033/of2007-1047srp033.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 180.0,-90.0 ], [ 180.0,-60.0 ], [ -180.0,-60.0 ], [ -180.0,-90.0 ], [ 180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd6364e4b0b290850fec3f","contributors":{"authors":[{"text":"Leat, P.T.","contributorId":54511,"corporation":false,"usgs":true,"family":"Leat","given":"P.T.","email":"","affiliations":[],"preferred":false,"id":489864,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Curtis, M.L.","contributorId":55335,"corporation":false,"usgs":true,"family":"Curtis","given":"M.L.","email":"","affiliations":[],"preferred":false,"id":489865,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Riley, T.R.","contributorId":107609,"corporation":false,"usgs":true,"family":"Riley","given":"T.R.","email":"","affiliations":[],"preferred":false,"id":489866,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ferraccioli, Fausto","contributorId":43591,"corporation":false,"usgs":true,"family":"Ferraccioli","given":"Fausto","email":"","affiliations":[],"preferred":false,"id":489863,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70103194,"text":"ofr20071047SRP105 - 2007 - Denudation and uplift of the Mawson Escarpment (eastern Lambert Graben, Antarctica) as indicated by apatite fission track data and geomorphological observation","interactions":[],"lastModifiedDate":"2014-04-29T15:30:07","indexId":"ofr20071047SRP105","displayToPublicDate":"2007-01-01T15:08:00","publicationYear":"2007","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":"2007-1047-SRP-105","title":"Denudation and uplift of the Mawson Escarpment (eastern Lambert Graben, Antarctica) as indicated by apatite fission track data and geomorphological observation","docAbstract":"Analysis of three vertical profiles from the southern Mawson Escarpment (Lambert Graben) reveals apatite fission track (AFT) ages ranging from 102±20 to 287±23 Ma and mean lengths of 12.2 to 13.0 μm. Quantitative thermal histories derived from these data consistently indicate onset of slow cooling below 110°C began sometime prior to 300 Ma, and a second stage of rapid cooling from paleotemperatures up to ≤100°C to surface temperatures occurred in the Late Cretaceous – Paleocene. The first cooling phase refers to Carboniferous – Jurassic basement denudation up to 5 km associated with the initial rifting of the Lambert Graben. The presence of the ancient East Antarctic Erosion Surface and rapid Late Cretaceous – Paleocene cooling indicate a second denudational episode during which up to 4.5 km of sedimentary cover rocks were removed, and that is likely linked to the Cretaceous Gondwana breakup between Antarctica and India and subsequent passive continental margin formation.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP105","usgsCitation":"Lisker, F., Gibson, H., Wilson, C.J., and Laufer, A., 2007, Denudation and uplift of the Mawson Escarpment (eastern Lambert Graben, Antarctica) as indicated by apatite fission track data and geomorphological observation: U.S. Geological Survey Open-File Report 2007-1047-SRP-105, 6 p., https://doi.org/10.3133/ofr20071047SRP105.","productDescription":"6 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":286787,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP105.JPG"},{"id":286786,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp105/of2007-1047srp105.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5360c9e9e4b082a3ecf53df5","contributors":{"authors":[{"text":"Lisker, F.","contributorId":57363,"corporation":false,"usgs":true,"family":"Lisker","given":"F.","email":"","affiliations":[],"preferred":false,"id":493210,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gibson, H.","contributorId":99045,"corporation":false,"usgs":true,"family":"Gibson","given":"H.","email":"","affiliations":[],"preferred":false,"id":493212,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wilson, C. J.","contributorId":88242,"corporation":false,"usgs":true,"family":"Wilson","given":"C.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":493211,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Laufer, A.","contributorId":37257,"corporation":false,"usgs":true,"family":"Laufer","given":"A.","email":"","affiliations":[],"preferred":false,"id":493209,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70103193,"text":"ofr20071047SRP104 - 2007 - Multiple shallow level sill intrusions coupled with hydromagmatic explosive eruptions marked the initial phase of Ferrar large igneous province magmatism in northern Victoria Land, Antarctica","interactions":[],"lastModifiedDate":"2014-04-29T15:07:22","indexId":"ofr20071047SRP104","displayToPublicDate":"2007-01-01T14:50:00","publicationYear":"2007","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":"2007-1047-SRP-104","title":"Multiple shallow level sill intrusions coupled with hydromagmatic explosive eruptions marked the initial phase of Ferrar large igneous province magmatism in northern Victoria Land, Antarctica","docAbstract":"Field data gathered during GANOVEX IX (2005/2006) in Northern Victoria Land, Antarctica, indicate that \nvolcaniclastic deposits of phreatomagmatic eruptions (so-called Exposure Hill Type events) are intercalated with fluvial \ndeposits of Triassic-Jurassic age at two stratigraphic levels. Abundant scoriaceous spatter (locally welded) indicates a \nhawaiian/strombolian component. Breccia-filled diatremes, from which volcaniclastic deposits were sourced, are rooted \nin sills which intruded wet sediments. The deposits are thus subaerial expressions of initial Ferrar magmatism involving \nintrusion of multiple shallow-level sills. Due to magma-sediment interaction abundant clastic dikes are developed that \nintrude the sediments and sills. All igneous components in the volcaniclastic deposits are andesitic in composition, as \nare the chilled margins of the sills. They are more differentiated than the basaltic andesites of the younger effusive \nsection of Kirkpatrick plateau lavas which in northern Victoria Land start with pillow lavas and small volume lava \nflows from volcanic necks.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP104","usgsCitation":"Viereck-Goette, L., Schoner, R., Bomfleur, B., and Schneider, J., 2007, Multiple shallow level sill intrusions coupled with hydromagmatic explosive eruptions marked the initial phase of Ferrar large igneous province magmatism in northern Victoria Land, Antarctica: U.S. Geological Survey Open-File Report 2007-1047-SRP-104, 5 p., https://doi.org/10.3133/ofr20071047SRP104.","productDescription":"5 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":286785,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP104.JPG"},{"id":286784,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp104/of2007-1047srp104.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5360c9f0e4b082a3ecf53e1e","contributors":{"authors":[{"text":"Viereck-Goette, L.","contributorId":37641,"corporation":false,"usgs":true,"family":"Viereck-Goette","given":"L.","email":"","affiliations":[],"preferred":false,"id":493205,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schoner, R.","contributorId":97004,"corporation":false,"usgs":true,"family":"Schoner","given":"R.","email":"","affiliations":[],"preferred":false,"id":493208,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bomfleur, B.","contributorId":54116,"corporation":false,"usgs":true,"family":"Bomfleur","given":"B.","email":"","affiliations":[],"preferred":false,"id":493206,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Schneider, J.","contributorId":85546,"corporation":false,"usgs":true,"family":"Schneider","given":"J.","email":"","affiliations":[],"preferred":false,"id":493207,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70074768,"text":"ofr20071047SRP031 - 2007 - Unconsolidated sediments at the bottom of Lake Vostok from seismic data","interactions":[],"lastModifiedDate":"2014-02-03T15:01:40","indexId":"ofr20071047SRP031","displayToPublicDate":"2007-01-01T14:41:00","publicationYear":"2007","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":"2007-1047-SRP-031","title":"Unconsolidated sediments at the bottom of Lake Vostok from seismic data","docAbstract":"Seismic soundings of Lake Vostok have been performed by the Polar Marine Geological Research \nExpedition in collaboration with the Russian Antarctic Expedition since the early 1990s. The seismograms recorded \nshow at least two relatively closely spaced reflections associated with the lake bottom. These were initially interpreted \nas boundaries of a layer of unconsolidated sediments at the bottom of the lake. A more recent interpretation suggests \nthat the observed reflections are side echoes from the rough lake bottom, and that there are no unconsolidated sediments \nat the bottom of the lake. The major goal of this paper is to reveal the nature of those reflections by testing three \nhypotheses of their origin. The results show that some of the reflections, but not all of them, are consistent with the \nhypothesis of a non-flat lake bottom along the source-receiver line (2D case). The reflections were also evaluated as \nside echoes from an adjacent sloping interface, but these tests implied unreasonably steep slopes (at least 8 degrees) at \nthe lake bottom. The hypothesis that is the most compatible with seismic data is the presence of a widespread layer of \nunconsolidated sediments at the bottom of Lake Vostok. The modeling suggests the presence of a two hundred meter \nthick sedimentary layer with a seismic velocity of 1700 -1900 m/sec in the southern and middle parts of the lake. The \nsedimentary layer thickens in the northern basin to ~350 m","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP031","usgsCitation":"Filina, I., Lukin, V., Masolov, V., and Blankenship, D., 2007, Unconsolidated sediments at the bottom of Lake Vostok from seismic data: U.S. Geological Survey Open-File Report 2007-1047-SRP-031, 5 p., https://doi.org/10.3133/ofr20071047SRP031.","productDescription":"5 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":281921,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP031.JPG"},{"id":281918,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp031/of2007-1047srp031.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 180.0,-90.0 ], [ 180.0,-60.0 ], [ -180.0,-60.0 ], [ -180.0,-90.0 ], [ 180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd7a29e4b0b2908510d4dd","contributors":{"authors":[{"text":"Filina, I.","contributorId":80585,"corporation":false,"usgs":true,"family":"Filina","given":"I.","email":"","affiliations":[],"preferred":false,"id":489851,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lukin, V.","contributorId":47696,"corporation":false,"usgs":true,"family":"Lukin","given":"V.","email":"","affiliations":[],"preferred":false,"id":489850,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Masolov, Valery","contributorId":102788,"corporation":false,"usgs":true,"family":"Masolov","given":"Valery","email":"","affiliations":[],"preferred":false,"id":489852,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Blankenship, D.","contributorId":108260,"corporation":false,"usgs":true,"family":"Blankenship","given":"D.","affiliations":[],"preferred":false,"id":489853,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70103040,"text":"ofr20071047SRP096 - 2007 - Morphotectonic architecture of the Transantarctic Mountains rift flank between the Royal Society Range and the Churchill Mountains based on geomorphic analysis","interactions":[],"lastModifiedDate":"2014-04-29T10:13:34","indexId":"ofr20071047SRP096","displayToPublicDate":"2007-01-01T14:34:00","publicationYear":"2007","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":"2007-1047-SRP-096","title":"Morphotectonic architecture of the Transantarctic Mountains rift flank between the Royal Society Range and the Churchill Mountains based on geomorphic analysis","docAbstract":"Extensional forces within the Antarctic Plate have produced the Transantarctic Mountains rift-flank uplift \nalong the West Antarctic rift margin. Large-scale linear morphologic features within the mountains are controlled by \nbedrock structure and can be recognized and mapped from satellite imagery and digital elevation models (DEMs). This \nstudy employed the Antarctic Digital Database DEM to obtain slope steepness and aspect maps of the Transantarctic \nMountains (TAM) between the Royal Society Range and the Churchill Mountains, allowing definition of the position \nand orientation of the morphological axis of the rift-flank. The TAM axis, interpreted as a fault-controlled escarpment \nformed by coast-parallel retreat, provides a marker for the orientation of the faulted boundary between the TAM and the \nrift system. Changes in position and orientation of the TAM axis suggests the rift flank is segmented into tectonic \nblocks bounded by relay ramps and transverse accommodation zones. The transverse boundaries coincide with major \noutlet glaciers, supporting interpretation of rift structures between them. The pronounced morphological change across \nByrd Glacier points to control by structures inherited from the Ross orogen.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP096","usgsCitation":"Demyanick, E., and Wilson, T.J., 2007, Morphotectonic architecture of the Transantarctic Mountains rift flank between the Royal Society Range and the Churchill Mountains based on geomorphic analysis: U.S. Geological Survey Open-File Report 2007-1047-SRP-096, 6 p., https://doi.org/10.3133/ofr20071047SRP096.","productDescription":"6 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":286759,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP096.JPG"},{"id":286758,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp096/of2007-1047srp096.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 180.0,-90.0 ], [ 180.0,-60.0 ], [ -180.0,-60.0 ], [ -180.0,-90.0 ], [ 180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5360c9f0e4b082a3ecf53e1a","contributors":{"authors":[{"text":"Demyanick, Elizabeth","contributorId":34051,"corporation":false,"usgs":true,"family":"Demyanick","given":"Elizabeth","email":"","affiliations":[],"preferred":false,"id":493119,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wilson, Terry J.","contributorId":83843,"corporation":false,"usgs":true,"family":"Wilson","given":"Terry","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":493120,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70068932,"text":"ofr20071047SRP014 - 2007 - Insight into the geology of the East Antarctic hinterland: a study of sediment inclusions from ice cores of the Lake Vostok borehole","interactions":[],"lastModifiedDate":"2014-01-13T14:40:06","indexId":"ofr20071047SRP014","displayToPublicDate":"2007-01-01T14:33:00","publicationYear":"2007","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":"2007-1047-SRP-014","title":"Insight into the geology of the East Antarctic hinterland: a study of sediment inclusions from ice cores of the Lake Vostok borehole","docAbstract":"The borehole at the southern part of subglacial Lake Vostok has been drilled into an ice layer that has been\nrefrozen from the lake water. This ice layer contains random sediment inclusions, eight of which have been studied \nusing state-of the-art analytical techniques. Six inclusions comprise soft aggregates consisting mainly of clay-mica \nminerals and micron-sized quartz grains while two others are solid clasts of fine-grained cemented rocks. The largest \nrock clast consists of poorly-rounded quartz and minor amounts of accessory minerals and is classified as quartzose \nsiltstone. More than twenty grains of zircon and monazite have been identified in this siltstone and dated by SIMS \nSHRIMP-II. Two age clusters have been recognized for these detrital grains, in the ranges 0.8−1.2 Ga and 1.6−1.8 Ga. \nThe compositions of the rock clasts suggest that the bedrock situated to the west of Lake Vostok is sedimentary. The \nage data on the detrital accessory minerals suggest that the provenance of these sedimentary rocks − the Gamburtsev \nMountains and Vostok Subglacial Highlands, is mainly represented by Paleoproterozoic and MesoproterozoicNeoproterozoic crustal provinces","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP014","usgsCitation":"Leitchenkov, G., Belyatsky, B., Rodionov, N., and Sergeev, S., 2007, Insight into the geology of the East Antarctic hinterland: a study of sediment inclusions from ice cores of the Lake Vostok borehole: U.S. Geological Survey Open-File Report 2007-1047-SRP-014, 4 p., https://doi.org/10.3133/ofr20071047SRP014.","productDescription":"4 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":280912,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP014.JPG"},{"id":280911,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp014/of2007-1047srp014.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd62a5e4b0b290850fe510","contributors":{"authors":[{"text":"Leitchenkov, G.L.","contributorId":70126,"corporation":false,"usgs":true,"family":"Leitchenkov","given":"G.L.","email":"","affiliations":[],"preferred":false,"id":488190,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Belyatsky, B.V.","contributorId":30907,"corporation":false,"usgs":true,"family":"Belyatsky","given":"B.V.","email":"","affiliations":[],"preferred":false,"id":488188,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rodionov, N.V.","contributorId":38893,"corporation":false,"usgs":true,"family":"Rodionov","given":"N.V.","email":"","affiliations":[],"preferred":false,"id":488189,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sergeev, S.A.","contributorId":76584,"corporation":false,"usgs":true,"family":"Sergeev","given":"S.A.","email":"","affiliations":[],"preferred":false,"id":488191,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70120699,"text":"70120699 - 2007 - Management applications of lidar-derived mean high water shorelines in North Carolina","interactions":[],"lastModifiedDate":"2017-09-06T15:07:01","indexId":"70120699","displayToPublicDate":"2007-01-01T14:32:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Management applications of lidar-derived mean high water shorelines in North Carolina","docAbstract":"<p>The accuracy of shoreline change analysis is dependent on how the shoreline is defined and the consistency of the techniques(s) used to define it. Using the concurrent lidar (light detection and ranging) and orthophotography dataset from August and September of 2004 covering North Carolina's 516 kilometers of barrier island oceanfront, Limber et al. (2007) examined the spatial relationship between two common shoreline definitions used in shoreline change analysis, mean high water [MHW] derived from lidar data and the wet/dry line digitized from orthophotography. Here, we summarize this work and extend the analysis with a comparison between two different methods of MHW shoreline extraction from liar data: a profile-based method (Stockdon  et al., 2002) and a method based on correction of the lidar data to a MHW datum (Hess et al., 2005). Potential bias generated by using these different shoreline types together can affect not only the accuracy of shoreline change analysis, but also the coastal management policies and decision that rely on it. Therefore, the implications of this study potential extend far beyond North Carolina and Atlantic Coast of the United States.</p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Proceedings of Coastal Zone '07","largerWorkSubtype":{"id":12,"text":"Conference publication"},"language":"English","publisher":"NOAA Coastal Services Center","publisherLocation":"Charleston, SC","usgsCitation":"Limber, P., List, J., and Warren, J.D., 2007, Management applications of lidar-derived mean high water shorelines in North Carolina, <i>in</i> Proceedings of Coastal Zone '07, 5 p.","productDescription":"5 p.","numberOfPages":"5","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":292324,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"North Carolina","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -84.3219,33.841 ], [ -84.3219,36.5882 ], [ -75.46,36.5882 ], [ -75.46,33.841 ], [ -84.3219,33.841 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53ef1ed5e4b0bfa1f993efc5","contributors":{"authors":[{"text":"Limber, Patrick W.","contributorId":38904,"corporation":false,"usgs":true,"family":"Limber","given":"Patrick W.","affiliations":[],"preferred":false,"id":498407,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"List, Jeffrey H. jlist@usgs.gov","contributorId":2416,"corporation":false,"usgs":true,"family":"List","given":"Jeffrey H.","email":"jlist@usgs.gov","affiliations":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"preferred":false,"id":498405,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Warren, Jeffrey D.","contributorId":21869,"corporation":false,"usgs":true,"family":"Warren","given":"Jeffrey","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":498406,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70074763,"text":"ofr20071047SRP030 - 2007 - Geology of the Byrd Glacier Discontinuity (Ross Orogen): New survey data from the Britannia Range, Antarctica","interactions":[],"lastModifiedDate":"2014-02-03T14:27:57","indexId":"ofr20071047SRP030","displayToPublicDate":"2007-01-01T14:14:00","publicationYear":"2007","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":"2007-1047-SRP-030","title":"Geology of the Byrd Glacier Discontinuity (Ross Orogen): New survey data from the Britannia Range, Antarctica","docAbstract":"Field activities in the Britannia Range (Transantarctic Mountains, Antarctica) highlighted new geological \nfeatures around the so-called Byrd Glacier discontinuity. Recent field surveys revealed the occurrence of significant \namounts of medium- to high-grade metamorphic rocks, intruded by abundant coarse-grained porphyritic granitoids. \nMost of the granitoids are deformed, with foliation parallel to the regional foliation in the metamorphics. Two main \nepisodes of deformation are observed. Tight to isoclinal folds and penetrative axial plane foliation are related to the D1 \nphase, open folds to the D2. The main foliation (D1) trends nearly E-W in agreement with the trend in the southern \nportion of the Byrd Glacier. In most outcrops, granitic dykes are folded and stretched by the D2 deformation, which \nshows similar characteristics with the D2 deformation south of the Byrd Glacier. This suggests the occurrence in the \nRoss orogen of an orogen-normal structure south and north of the Byrd Glacier.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP030","usgsCitation":"Carosi, R., Giacomini, F., Talarico, F., and Stump, E., 2007, Geology of the Byrd Glacier Discontinuity (Ross Orogen): New survey data from the Britannia Range, Antarctica: U.S. Geological Survey Open-File Report 2007-1047-SRP-030, 6 p., https://doi.org/10.3133/ofr20071047SRP030.","productDescription":"6 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":281911,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp030/of2007-1047srp030.pdf"},{"id":281913,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP030.JPG"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 180.0,-90.0 ], [ 180.0,-60.0 ], [ -180.0,-60.0 ], [ -180.0,-90.0 ], [ 180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd5e31e4b0b290850fb87a","contributors":{"authors":[{"text":"Carosi, R.","contributorId":24681,"corporation":false,"usgs":true,"family":"Carosi","given":"R.","email":"","affiliations":[],"preferred":false,"id":489842,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Giacomini, F.","contributorId":22241,"corporation":false,"usgs":true,"family":"Giacomini","given":"F.","email":"","affiliations":[],"preferred":false,"id":489841,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Talarico, F.","contributorId":84585,"corporation":false,"usgs":true,"family":"Talarico","given":"F.","email":"","affiliations":[],"preferred":false,"id":489844,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Stump, E.","contributorId":63303,"corporation":false,"usgs":true,"family":"Stump","given":"E.","email":"","affiliations":[],"preferred":false,"id":489843,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70120690,"text":"70120690 - 2007 - Observations related to tetrahydrofuran and methane hydrates for laboratory studies of hydrate-bearing sediments","interactions":[],"lastModifiedDate":"2014-08-15T14:11:15","indexId":"70120690","displayToPublicDate":"2007-01-01T14:09:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1757,"text":"Geochemistry, Geophysics, Geosystems","active":true,"publicationSubtype":{"id":10}},"title":"Observations related to tetrahydrofuran and methane hydrates for laboratory studies of hydrate-bearing sediments","docAbstract":"<p>The interaction among water molecules, guest gas molecules, salts, and mineral particles determines the nucleation and growth behavior of gas hydrates in natural sediments. Hydrate of tetrahydrofuran (THF) has long been used for laboratory studies of gas hydrate-bearing sediments to provide close control on hydrate concentrations and to overcome the long formation history of methane hydrate from aqueous phase methane in sediments. Yet differences in the polarizability of THF (polar molecule) compared to methane (nonpolar molecule) raise questions about the suitability of THF as a proxy for methane in the study of hydrate-bearing sediments. From existing data and simple macroscale experiments, we show that despite its polar nature, THF's large molecular size results in low permittivity, prevents it from dissolving precipitated salts, and hinders the solvation of ions on dry mineral surfaces. In addition, the interfacial tension between water and THF hydrate is similar to that between water and methane hydrate. The processes that researchers choose for forming hydrate in sediments in laboratory settings (e.g., from gas, liquid, or ice) and the pore-scale distribution of the hydrate that is produced by each of these processes likely have a more pronounced effect on the measured macroscale properties of hydrate-bearing sediments than do differences between THF and methane hydrates themselves.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geochemistry, Geophysics, Geosystems","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Wiley","doi":"10.1029/2006GC001531","usgsCitation":"Lee, J., Yun, T., Santamarina, J., and Ruppel, C., 2007, Observations related to tetrahydrofuran and methane hydrates for laboratory studies of hydrate-bearing sediments: Geochemistry, Geophysics, Geosystems, v. 8, no. 6, 10 p., https://doi.org/10.1029/2006GC001531.","productDescription":"10 p.","numberOfPages":"10","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":292314,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":292313,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2006GC001531"}],"volume":"8","issue":"6","noUsgsAuthors":false,"publicationDate":"2007-06-06","publicationStatus":"PW","scienceBaseUri":"53ef1ed5e4b0bfa1f993efda","contributors":{"authors":[{"text":"Lee, J.Y.","contributorId":20061,"corporation":false,"usgs":true,"family":"Lee","given":"J.Y.","email":"","affiliations":[],"preferred":false,"id":498389,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Yun, T.S.","contributorId":26141,"corporation":false,"usgs":true,"family":"Yun","given":"T.S.","email":"","affiliations":[],"preferred":false,"id":498390,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Santamarina, J.C.","contributorId":50283,"corporation":false,"usgs":true,"family":"Santamarina","given":"J.C.","email":"","affiliations":[],"preferred":false,"id":498391,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ruppel, C.","contributorId":82050,"corporation":false,"usgs":true,"family":"Ruppel","given":"C.","email":"","affiliations":[],"preferred":false,"id":498392,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70094193,"text":"ofr20071047SRP055 - 2007 - Break-up of Gondwana and opening of the South Atlantic: Review of existing plate tectonic models","interactions":[],"lastModifiedDate":"2014-02-18T14:14:41","indexId":"ofr20071047SRP055","displayToPublicDate":"2007-01-01T14:05:00","publicationYear":"2007","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":"2007-1047-SRP-055","title":"Break-up of Gondwana and opening of the South Atlantic: Review of existing plate tectonic models","docAbstract":"The opening history of both the Weddell Sea and South Atlantic Ocean is critical to understanding the break-\nup of Gondwana and the evolution of Antarctica since Early Jurassic times. The dispersal of the Gondwanide fragments\nis important to understanding the development of past ocean circulation. Unfortunately the tectonics of the Weddell Sea\nregion is difficult to resolve because of the paucity of data coverage and the region’s inherent complexity. Although\nconsiderable progress has been achieved in the past 20 years with new marine aeromagnetic data and satellite derived\ngravity anomaly maps, there are still several models in consideration which differ in crustal ages and schemes of opening. In this paper we present a review of four of those models. Focusing on poles of rotation, synthetic isochrons and\nflowlines, we proceed backward in time beginning at Chron 34 (83.5 Ma), as it is relatively well defined ocean wide,\nand present crustal age maps that display the estimated trace of the South America-Antarctica-Africa triple junction for\neach model. We also plot reconstructions at four selected epochs for all models using the same projection and scale to facilitate comparison. The diverse simplifying assumptions that need to be made in every case regarding plate fragmentation to account for the numerous syn-rift basins and periods of stretching are strong indicators that rigid plate tectonics is too simple a model for the present problem.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP055","usgsCitation":"Ghidella, M., Lawver, L., and Gahagan, L., 2007, Break-up of Gondwana and opening of the South Atlantic: Review of existing plate tectonic models: U.S. Geological Survey Open-File Report 2007-1047-SRP-055, 5 p., https://doi.org/10.3133/ofr20071047SRP055.","productDescription":"5 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":282490,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp055/of2007-1047srp055.pdf"},{"id":282492,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP055.JPG"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 180.0,-90.0 ], [ 180.0,-60.0 ], [ -180.0,-60.0 ], [ -180.0,-90.0 ], [ 180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd4fcae4b0b290850f2ee5","contributors":{"authors":[{"text":"Ghidella, M.E.","contributorId":37645,"corporation":false,"usgs":true,"family":"Ghidella","given":"M.E.","email":"","affiliations":[],"preferred":false,"id":490547,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lawver, L.A.","contributorId":73599,"corporation":false,"usgs":true,"family":"Lawver","given":"L.A.","email":"","affiliations":[],"preferred":false,"id":490548,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gahagan, L.M.","contributorId":15112,"corporation":false,"usgs":true,"family":"Gahagan","given":"L.M.","email":"","affiliations":[],"preferred":false,"id":490546,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70093615,"text":"ofr20071047SRP038 - 2007 - Solubility of TiO<sub>2</sub> in garnet and orthopyroxene: Ti thermometer for ultrahigh-temperature granulites","interactions":[],"lastModifiedDate":"2014-02-10T15:00:23","indexId":"ofr20071047SRP038","displayToPublicDate":"2007-01-01T14:03:00","publicationYear":"2007","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":"2007-1047-SRP-038","title":"Solubility of TiO<sub>2</sub> in garnet and orthopyroxene: Ti thermometer for ultrahigh-temperature granulites","docAbstract":"We report the TiO<sub>2</sub> solubility in garnet and orthopyroxene coexisting with rutile calibrated from experimental data at pressures 7–20 kbar and temperatures 850–1300°C in two Antarctic granulite systems.The Ti would substitute for the tetrahedral Si, whereas we could not find positive evidence of the coupled substitution of M-Ti (M is Mg or Fe) for Al-Al in octahedral sites as well as the interstitial substitution of \u0003-Ti (\u0003 is avacancy)\nfor M-M in triangular-dodecahedral sites of garnet at ultrahigh-temperature (UHT) metamorphicconditions.The TiO<sub>2</sub> content of garnet increases with temperature and decreases with pressure. In orthopyroxene Ti substitutes for atoms in the tetrahedral and octahedralsites.The Ti content of orthopyroxene increases with temperature and\nincreases with pressure.Titanium solubility in garnet and orthopyroxene is not so sensitive to pressure change as\ncompared with temperature dependence given by following empirical equations: ln (X <sup>Grt;IV</sup><sub>Ti</sub>/X<sup>Grt;IV</sup><sub>Si</sub>)= -15366/T +5.962 and ln ( X<sup>Opx;IV</sup>\n<sub>Ti</sub>/X<sup>Opx;IV</sup><sub>Si</sub>)=-11367=T +3.107 where X is the mole fraction of Ti or Si on the tetrahedral sites and temperature is given in Kelvin.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP038","usgsCitation":"Kawasaki, T., and Motoyoshi, Y., 2007, Solubility of TiO<sub>2</sub> in garnet and orthopyroxene: Ti thermometer for ultrahigh-temperature granulites: U.S. Geological Survey Open-File Report 2007-1047-SRP-038, 4 p., https://doi.org/10.3133/ofr20071047SRP038.","productDescription":"4 p.","costCenters":[],"links":[{"id":282231,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP038.JPG"},{"id":282230,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp038/of2007-1047srp038.pdf"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd7336e4b0b29085108cce","contributors":{"authors":[{"text":"Kawasaki, Toshisuke","contributorId":53289,"corporation":false,"usgs":true,"family":"Kawasaki","given":"Toshisuke","email":"","affiliations":[],"preferred":false,"id":490086,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Motoyoshi, Yoichi","contributorId":83440,"corporation":false,"usgs":true,"family":"Motoyoshi","given":"Yoichi","email":"","affiliations":[],"preferred":false,"id":490087,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70074759,"text":"ofr20071047SRP029 - 2007 - Sea ice concentration temporal variability over the Weddell Sea and its relationship with tropical sea surface temperature","interactions":[],"lastModifiedDate":"2014-02-03T14:09:17","indexId":"ofr20071047SRP029","displayToPublicDate":"2007-01-01T14:01:00","publicationYear":"2007","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":"2007-1047-SRP-029","title":"Sea ice concentration temporal variability over the Weddell Sea and its relationship with tropical sea surface temperature","docAbstract":"Principal Components Analysis (PCA) in S-Mode (correlation between temporal series) was performed on \nsea ice monthly anomalies, in order to investigate which are the main temporal patterns, where are the homogenous \nareas located and how are they related to the sea surface temperature (SST). This analysis provides 9 patterns (4 in the \nAmundsen and Bellingshausen Seas and 5 in the Weddell Sea) that represent the most important temporal features that \ndominated sea ice concentration anomalies (SICA) variability in the Weddell, Amundsen and Bellingshausen Seas over \nthe 1979-2000 period. Monthly Polar Gridded Sea Ice Concentrations data set derived from satellite information \ngenerated by NASA Team algorithm and acquired from the National Snow and Ice Data Center (NSIDC) were used. \nMonthly means SST are provided by the National Center for Environmental Prediction reanalysis. The first temporal \npattern series obtained by PCA has its homogeneous area located at the external region of the Weddell and \nBellingshausen Seas and Drake Passage, mostly north of 60°S. The second region is centered in 30°W and located at the \nsoutheast of the Weddell. The third area is localized east of 30°W and north of 60°S. South of the first area, the fourth \nPC series has its homogenous region, between 30° and 60°W. The last area is centered at 0° W and south of 60°S. \nCorrelation charts between the five Principal Components series and SST were performed. Positive correlations over the \nTropical Pacific Ocean were found for the five PCs when SST series preceded SICA PC series. The sign of the \ncorrelation could relate the occurrence of an El Niño/Southern Oscillation (ENSO) warm (cold) event with posterior \npositive (negative) anomalies of sea ice concentration over the Weddell Sea.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP029","usgsCitation":"Barreira, S., and Compagnucci, R., 2007, Sea ice concentration temporal variability over the Weddell Sea and its relationship with tropical sea surface temperature: U.S. Geological Survey Open-File Report 2007-1047-SRP-029, 5 p., https://doi.org/10.3133/ofr20071047SRP029.","productDescription":"5 p.","onlineOnly":"N","costCenters":[],"links":[{"id":281910,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP029.JPG"},{"id":281909,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp029/of2007-1047srp029.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 180.0,-90.0 ], [ 180.0,-60.0 ], [ -180.0,-60.0 ], [ -180.0,-90.0 ], [ 180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd7196e4b0b29085107c3f","contributors":{"authors":[{"text":"Barreira, S.","contributorId":28167,"corporation":false,"usgs":true,"family":"Barreira","given":"S.","email":"","affiliations":[],"preferred":false,"id":489837,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Compagnucci, R.","contributorId":21068,"corporation":false,"usgs":true,"family":"Compagnucci","given":"R.","email":"","affiliations":[],"preferred":false,"id":489836,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70068872,"text":"ofr20071047SRP011 - 2007 - SCIAMACHY’s View of the Polar Atmosphere","interactions":[],"lastModifiedDate":"2014-01-13T13:58:25","indexId":"ofr20071047SRP011","displayToPublicDate":"2007-01-01T13:48:00","publicationYear":"2007","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":"2007-1047-SRP-011","title":"SCIAMACHY’s View of the Polar Atmosphere","docAbstract":"The instrument SCIAMACHY onboard the European ENVISAT mission provides unique capabilities for \nderiving atmospheric geophysical parameters. Since its launch in early 2002 it has operated successfully in orbit. Due to \nENVISAT’s high inclination orbit the polar regions are monitored continuously. We report here results about the status \nof the polar atmosphere in the past 5 years with special emphasis on the southern hemisphere. This part of the \natmosphere is considered to be highly sensitive to anthropogenic impacts on the Earth system and thus to climate \nchange. The acquired data permit retrieving information on the Earth’s atmosphere from troposphere up to the \nmesosphere","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP011","usgsCitation":"Gottwald, M., Krieg, E., von Savigny, C., Noel, S., Reichl, A., Bovensmann, H., and Burrows, J., 2007, SCIAMACHY’s View of the Polar Atmosphere: U.S. Geological Survey Open-File Report 2007-1047-SRP-011, 4 p., https://doi.org/10.3133/ofr20071047SRP011.","productDescription":"4 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":280901,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP011.JPG"},{"id":280900,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp011/of2007-1047srp011.pdf"}],"geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd713ae4b0b290851078a1","contributors":{"authors":[{"text":"Gottwald, M.","contributorId":90637,"corporation":false,"usgs":true,"family":"Gottwald","given":"M.","email":"","affiliations":[],"preferred":false,"id":488164,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Krieg, E.","contributorId":15929,"corporation":false,"usgs":true,"family":"Krieg","given":"E.","email":"","affiliations":[],"preferred":false,"id":488159,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"von Savigny, C.","contributorId":62137,"corporation":false,"usgs":true,"family":"von Savigny","given":"C.","email":"","affiliations":[],"preferred":false,"id":488161,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Noel, S.","contributorId":80582,"corporation":false,"usgs":true,"family":"Noel","given":"S.","email":"","affiliations":[],"preferred":false,"id":488162,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Reichl, A.","contributorId":30139,"corporation":false,"usgs":true,"family":"Reichl","given":"A.","email":"","affiliations":[],"preferred":false,"id":488160,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Bovensmann, H.","contributorId":91015,"corporation":false,"usgs":true,"family":"Bovensmann","given":"H.","email":"","affiliations":[],"preferred":false,"id":488165,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Burrows, J.P.","contributorId":85879,"corporation":false,"usgs":true,"family":"Burrows","given":"J.P.","email":"","affiliations":[],"preferred":false,"id":488163,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70074756,"text":"ofr20071047SRP028 - 2007 - Crustal structure and evolution of the Mawson Sea, western Wilkes Land margin, East Antarctica","interactions":[],"lastModifiedDate":"2014-02-03T13:54:13","indexId":"ofr20071047SRP028","displayToPublicDate":"2007-01-01T13:46:00","publicationYear":"2007","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":"2007-1047-SRP-028","title":"Crustal structure and evolution of the Mawson Sea, western Wilkes Land margin, East Antarctica","docAbstract":"Thisstudy is based on about 4000 km of MCS, magnetic and gravity data as well as 10 sonobuoys collected\nby the 2005 Russian Antarctic Expedition in the Mawson Sea and adjacent Australian-Antarctic basin between 102°E \nand 115°E. Major identified tectonic provinces and features of the study region include: 1) A marginal rift about 300 km \nwide which developed as a result of extreme crustal extension and unroofing of the upper mantle, and 2) An oceanic \nbasin with the crust of not older than 81 Ma, which is characterized by ultraslow sea-floorspreading ratesranging from\n3 to 11 mm/yr. Three major unconformities are identified in the sedimentary cover of the Mawson Sea and are \ninterpreted to be caused by break-up between Australia and Antarctica at about 81 Ma ago (WL1), the first arrival of the \nice sheet to the Mawson Sea (WL3) and continental scale glaciation at about 34 Ma ago (WL4).","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP028","usgsCitation":"Leitchenkov, G., Gandyukhin, V., Guseva, Y.B., and Kazankov, A.Y., 2007, Crustal structure and evolution of the Mawson Sea, western Wilkes Land margin, East Antarctica: U.S. Geological Survey Open-File Report 2007-1047-SRP-028, 4 p., https://doi.org/10.3133/ofr20071047SRP028.","productDescription":"4 p.","numberOfPages":"4","costCenters":[],"links":[{"id":281904,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP028.JPG"},{"id":281903,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp028/of2007-1047srp028.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 180.0,-90.0 ], [ 180.0,-60.0 ], [ -180.0,-60.0 ], [ -180.0,-90.0 ], [ 180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd5384e4b0b290850f5337","contributors":{"authors":[{"text":"Leitchenkov, G.L.","contributorId":70126,"corporation":false,"usgs":true,"family":"Leitchenkov","given":"G.L.","email":"","affiliations":[],"preferred":false,"id":489825,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gandyukhin, V.V.","contributorId":35081,"corporation":false,"usgs":true,"family":"Gandyukhin","given":"V.V.","email":"","affiliations":[],"preferred":false,"id":489822,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Guseva, Yu. B.","contributorId":67803,"corporation":false,"usgs":true,"family":"Guseva","given":"Yu.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":489824,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kazankov, A. Yu","contributorId":38061,"corporation":false,"usgs":true,"family":"Kazankov","given":"A.","email":"","middleInitial":"Yu","affiliations":[],"preferred":false,"id":489823,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70093609,"text":"ofr20071047SRP037 - 2007 - East Antarctic Ice Sheet fluctuations during the Middle Miocene Climatic  Transition inferred from faunal and biogeochemical data on planktonic  foraminifera (ODP Hole 747A, Kerguelen Plateau)","interactions":[],"lastModifiedDate":"2014-02-10T13:54:59","indexId":"ofr20071047SRP037","displayToPublicDate":"2007-01-01T13:39:00","publicationYear":"2007","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":"2007-1047-SRP-037","title":"East Antarctic Ice Sheet fluctuations during the Middle Miocene Climatic  Transition inferred from faunal and biogeochemical data on planktonic  foraminifera (ODP Hole 747A, Kerguelen Plateau)","docAbstract":"This research focuses on a detailed study of faunal and biogeochemical changes that occurred at ODP Hole \n747A in the Kerguelen Plateau region of the Southern Ocean during the middle Miocene (14.8-11.8 Ma). Abundance \nfluctuations of several planktonic foraminiferal taxa, stable oxygen isotope and Mg/Ca ratios have been integrated as a \nmulti-proxy approach to reach a better understanding of the growth modality and fluctuations of the East Antarctic Ice \nSheet (EAIS) during this period. A 7°C decrease in Sea Surface Temperature (SST), an abrupt turnover in the planktonic \nforaminiferal assemblage, a 1.5‰ shift towards heavier δ<sup>18</sup>O values (Mi3 event) and a related shift towards heavier \nseawater δ1<sup>18</sup>O values between 13.9 and 13.7 Ma, are interpreted to reflect rapid surface water cooling and EAIS \nexpansion. Hole 747A data suggest a major change in the variability of the climate system fostered by EAIS expansion \nbetween 13.9 and 13.7 Ma. Ice sheet fluctuations were greater during the interval 14.8-13.9 Ma compared with those \nfrom 13.7 to 11.8 Ma, whereas the latter interval was characterized by a more stable EAIS. In our opinion, the middle \nMiocene ice sheet expansion in Antarctica represents a first step towards the development of the modern permanent ice \nsheet","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP037","usgsCitation":"Verducci, M., Foresi, L., Scott, G., Tiepolo, Sprovieri, M., and Lirer, F., 2007, East Antarctic Ice Sheet fluctuations during the Middle Miocene Climatic  Transition inferred from faunal and biogeochemical data on planktonic  foraminifera (ODP Hole 747A, Kerguelen Plateau): U.S. Geological Survey Open-File Report 2007-1047-SRP-037, 5 p., https://doi.org/10.3133/ofr20071047SRP037.","productDescription":"5 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":282223,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP037.JPG"},{"id":282222,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp037/of2007-1047srp037.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 180.0,-90.0 ], [ 180.0,-60.0 ], [ -180.0,-60.0 ], [ -180.0,-90.0 ], [ 180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd563ae4b0b290850f6cb2","contributors":{"authors":[{"text":"Verducci, M.","contributorId":62134,"corporation":false,"usgs":true,"family":"Verducci","given":"M.","email":"","affiliations":[],"preferred":false,"id":490077,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Foresi, L.M.","contributorId":107608,"corporation":false,"usgs":true,"family":"Foresi","given":"L.M.","email":"","affiliations":[],"preferred":false,"id":490078,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Scott, G.H.","contributorId":54509,"corporation":false,"usgs":true,"family":"Scott","given":"G.H.","email":"","affiliations":[],"preferred":false,"id":490076,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Tiepolo","contributorId":128047,"corporation":true,"usgs":false,"organization":"Tiepolo","id":535627,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Sprovieri, M.","contributorId":12775,"corporation":false,"usgs":true,"family":"Sprovieri","given":"M.","email":"","affiliations":[],"preferred":false,"id":490073,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Lirer, F.","contributorId":54108,"corporation":false,"usgs":true,"family":"Lirer","given":"F.","email":"","affiliations":[],"preferred":false,"id":490075,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70094187,"text":"ofr20071047SRP054 - 2007 - Modeling environmental bias and computing velocity field from data of Terra Nova Bay GPS network in Antarctica by means of a quasi-observation processing approach","interactions":[],"lastModifiedDate":"2014-02-18T13:58:14","indexId":"ofr20071047SRP054","displayToPublicDate":"2007-01-01T13:38:00","publicationYear":"2007","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":"2007-1047-SRP-054","title":"Modeling environmental bias and computing velocity field from data of Terra Nova Bay GPS network in Antarctica by means of a quasi-observation processing approach","docAbstract":"A semi-permanent GPS network of about 30 vertices has been installed at Terra Nova Bay (TNB) near \nRoss Sea in Antarctica. A permanent GPS station TNB1 based on an Ashtech Z-XII dual frequency P-code GPS \nreceiver with ASH700936D_M Choke Ring Antenna has been mounted on a reinforced concrete pillar built on \nbedrock since October 1998 and has recorded continuously up to the present. The semi-permanent network has been \nroutinely surveyed every summer using high quality dual frequency GPS receivers with 24 hour sessions at 15 sec \nrate; data, metadata and solutions will be available to the scientific community at (http://www.geodant.unimore.it). \nWe present the results of a distributed session approach applied to processing GPS data of the TNB GPS network, and \nbased on Gamit/Globk 10.2-3 GPS analysis software. The results are in good agreement with other authors' \ncomputations and with many of the theoretical models.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP054","usgsCitation":"Casula, G., Dubbini, M., and Galeandro, A., 2007, Modeling environmental bias and computing velocity field from data of Terra Nova Bay GPS network in Antarctica by means of a quasi-observation processing approach: U.S. Geological Survey Open-File Report 2007-1047-SRP-054, 4 p., https://doi.org/10.3133/ofr20071047SRP054.","productDescription":"4 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":282489,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP054.JPG"},{"id":282488,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp054/of2007-1047srp054.pdf"}],"otherGeospatial":"Antarctica;Terra Nova Bay","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 160.76,-75.01 ], [ 160.76,-69.98 ], [ 171.32,-69.98 ], [ 171.32,-75.01 ], [ 160.76,-75.01 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd67dde4b0b29085101ab6","contributors":{"authors":[{"text":"Casula, Giuseppe","contributorId":27357,"corporation":false,"usgs":true,"family":"Casula","given":"Giuseppe","email":"","affiliations":[],"preferred":false,"id":490543,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dubbini, Marco","contributorId":93819,"corporation":false,"usgs":true,"family":"Dubbini","given":"Marco","email":"","affiliations":[],"preferred":false,"id":490544,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Galeandro, Angelo","contributorId":96586,"corporation":false,"usgs":true,"family":"Galeandro","given":"Angelo","email":"","affiliations":[],"preferred":false,"id":490545,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70103167,"text":"ofr20071047SRP101 - 2007 - Thermochronologic constraints on the tectonic evolution of the western Antarctic Peninsula in late Mesozoic and Cenozoic times","interactions":[],"lastModifiedDate":"2014-04-29T13:54:18","indexId":"ofr20071047SRP101","displayToPublicDate":"2007-01-01T13:38:00","publicationYear":"2007","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":"2007-1047-SRP-101","title":"Thermochronologic constraints on the tectonic evolution of the western Antarctic Peninsula in late Mesozoic and Cenozoic times","docAbstract":"West of the Antarctic Peninsula, oceanic lithosphere of the Phoenix plate has been subducted below the \nAntarctic plate. Subduction has ceased successively from south to north over the last 65 Myr. An influence of this \nevolution on the segmentation of the crust in the Antarctic plate is disputed. Opposing scenarios consider effects of \nridge crest – trench interactions with the subduction zone or differences in slip along a basal detachment in the \noverriding plate. Fission track (FT) analyses on apatites and zircons may detect thermochronologic patterns to test these \nhypotheses. While existing data concentrate on accretionary processes in Palmer Land, new data extend information to \nthe northern part of the Antarctic Peninsula. Zircons from different geological units over wide areas of the Antarctic \nPeninsula yield fission track ages between 90 and 80 Ma, indicating a uniform regional cooling episode. Apatite FT \nages obtained so far show considerable regional variability","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP101","usgsCitation":"Brix, M., Faundez, V., Herve, F., Solari, M., Fernandez, J., Carter, A., and Stockhert, B., 2007, Thermochronologic constraints on the tectonic evolution of the western Antarctic Peninsula in late Mesozoic and Cenozoic times: U.S. Geological Survey Open-File Report 2007-1047-SRP-101, 5 p., https://doi.org/10.3133/ofr20071047SRP101.","productDescription":"5 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":286775,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP101.JPG"},{"id":286774,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp101/of2007-1047srp101.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5360c9fde4b082a3ecf53e3d","contributors":{"authors":[{"text":"Brix, M.R.","contributorId":100295,"corporation":false,"usgs":true,"family":"Brix","given":"M.R.","email":"","affiliations":[],"preferred":false,"id":493190,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Faundez, V.","contributorId":44464,"corporation":false,"usgs":true,"family":"Faundez","given":"V.","email":"","affiliations":[],"preferred":false,"id":493186,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Herve, F.","contributorId":26975,"corporation":false,"usgs":true,"family":"Herve","given":"F.","email":"","affiliations":[],"preferred":false,"id":493185,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Solari, M.","contributorId":12374,"corporation":false,"usgs":true,"family":"Solari","given":"M.","email":"","affiliations":[],"preferred":false,"id":493184,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Fernandez, J.","contributorId":46229,"corporation":false,"usgs":true,"family":"Fernandez","given":"J.","affiliations":[],"preferred":false,"id":493187,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Carter, A.","contributorId":62438,"corporation":false,"usgs":true,"family":"Carter","given":"A.","email":"","affiliations":[],"preferred":false,"id":493188,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Stockhert, B.","contributorId":69064,"corporation":false,"usgs":true,"family":"Stockhert","given":"B.","email":"","affiliations":[],"preferred":false,"id":493189,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70103490,"text":"ofr20071047SRP109 - 2007 - Crustal architecture of the oblique-slip conjugate margins of George V Land  and southeast Australia","interactions":[],"lastModifiedDate":"2014-05-05T13:56:27","indexId":"ofr20071047SRP109","displayToPublicDate":"2007-01-01T13:37:00","publicationYear":"2007","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":"2007-1047-SRP-109","title":"Crustal architecture of the oblique-slip conjugate margins of George V Land  and southeast Australia","docAbstract":"A conceptual, lithospheric-scale cross-section of the conjugate, oblique-slip margins of George V Land, East \nAntarctica, and southeast Australia (Otway Basin) has been constructed based on the integration of seismic and sample \ndata. This cross-section is characterised by asymmetry in width and thickness, and depth-dependent crustal extension at \nbreakup in the latest Maastrichtian. The broad Antarctic margin (~360 km apparent rift width) developed on thick \ncrust (~42 km) of the Antarctic craton, whereas the narrow Otway margin (~220 km) developed on the thinner crust \n(~31 km) of the Ross–Delamerian Orogen. The shallow basement (velocities ~5.5 km.s-1) and the deep continental \ncrust (velocities >6.4 km.s-1) appear to be largely absent across the central rift, while the mid-crustal, probably granitic \nlayer (velocities ~6 km.s-1) is preserved. Comparison with published numerical models suggests that the shallow \nbasement and deep crust may have been removed by simple shear, whereas the mid-crust has been ductilely deformed.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP109","usgsCitation":"Stagg, H., and Reading, A., 2007, Crustal architecture of the oblique-slip conjugate margins of George V Land  and southeast Australia: U.S. Geological Survey Open-File Report 2007-1047-SRP-109, 6 p., https://doi.org/10.3133/ofr20071047SRP109.","productDescription":"6 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":286882,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp109/of2007-1047srp109.pdf"},{"id":286883,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP109.JPG"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5368b2ece4b059f7e828832b","contributors":{"authors":[{"text":"Stagg, H.M.J.","contributorId":7843,"corporation":false,"usgs":true,"family":"Stagg","given":"H.M.J.","email":"","affiliations":[],"preferred":false,"id":493372,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Reading, A.M.","contributorId":55342,"corporation":false,"usgs":true,"family":"Reading","given":"A.M.","email":"","affiliations":[],"preferred":false,"id":493373,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70093760,"text":"ofr20071047SRP044 - 2007 - Thermochronologic constraints on Jurassic rift flank denudation in the Thiel Mountains, Antarctica","interactions":[],"lastModifiedDate":"2014-02-17T16:06:45","indexId":"ofr20071047SRP044","displayToPublicDate":"2007-01-01T13:35:00","publicationYear":"2007","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":"2007-1047-SRP-044","title":"Thermochronologic constraints on Jurassic rift flank denudation in the Thiel Mountains, Antarctica","docAbstract":"The Thiel Mountains are part of the Transantarctic Mountains (TAM) and occupy a strategic position close \nto the East-West Antarctic boundary. They occur in a region of relatively subdued topography distal from high \ntopography and high relief of most of the TAM adjacent to the West Antarctic rift system. Low-temperature \nthermochronology on samples collected from the Reed Ridge granite on the north flank of the Thiel Mountains \nconstrain the thermal and hence tectonic history. Apatite fission track data plus thermal models indicate cooling from \nca. 165-150 Ma. In conjunction with <sup>40</sup>Ar/<sup>39</sup>Ar K-feldspar data, the results indicate cooling was due to relatively slow \nerosional denudation, and not thermal relaxation following Jurassic tholeiitic magmatism. Denudation was most likely \nassociated with the formation of the Jurassic rift system across Antarctica that marked the initial breakup of Gondwana. \nThis is the oldest episode of denudation associated with formation of the present day TAM","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP044","usgsCitation":"Fitzgerald, P., and Baldwin, S., 2007, Thermochronologic constraints on Jurassic rift flank denudation in the Thiel Mountains, Antarctica: U.S. Geological Survey Open-File Report 2007-1047-SRP-044, 4 p., https://doi.org/10.3133/ofr20071047SRP044.","productDescription":"4 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":282453,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP044.png"},{"id":282452,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp044/of2007-1047srp044.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd78e1e4b0b2908510c722","contributors":{"authors":[{"text":"Fitzgerald, P.G.","contributorId":18579,"corporation":false,"usgs":true,"family":"Fitzgerald","given":"P.G.","email":"","affiliations":[],"preferred":false,"id":490195,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Baldwin, S.L.","contributorId":16752,"corporation":false,"usgs":true,"family":"Baldwin","given":"S.L.","email":"","affiliations":[],"preferred":false,"id":490194,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70120680,"text":"70120680 - 2007 - Survey report of NOAA Ship McArthur II cruises AR-04-04, AR-05-05 and AR-06-03: habitat classification of side scan sonar imagery in support of deep-sea coral/sponge explorations at the Olympic Coast National Marine Sanctuary","interactions":[],"lastModifiedDate":"2014-08-15T13:47:10","indexId":"70120680","displayToPublicDate":"2007-01-01T13:32:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"seriesNumber":"ONMS-07-01","title":"Survey report of NOAA Ship McArthur II cruises AR-04-04, AR-05-05 and AR-06-03: habitat classification of side scan sonar imagery in support of deep-sea coral/sponge explorations at the Olympic Coast National Marine Sanctuary","docAbstract":"<p>Habitat mapping and characterization has been defined as a high-priority management issue for the Olympic Coast National Marine Sanctuary (OCNMS), especially for poorly known deep-sea habitats that may be sensitive to anthropogenic disturbance. As a result, a team of scientists from OCNMS, National Centers for Coastal Ocean Science (NCCOS), and other partnering institutions initiated a series of surveys to assess the distribution of deep-sea coral/sponge assemblages within the sanctuary and to look for evidence of potential anthropogenic impacts in these critical habitats. Initial results indicated that remotely delineating areas of hard bottom substrate through acoustic sensing could be a useful tool to increase the efficiency and success of subsequent ROV-based surveys of the associated deep-sea fauna. Accordingly, side scan sonar surveys were conducted in May 2004, June 2005, and April 2006 aboard the NOAA Ship <i>McArthur II</i> to: (1) obtain additional imagery of the seafloor for broader habitat-mapping coverage of sanctuary waters, and (2) help delineate suitable deep-sea coral-sponge habitat, in areas of both high and low commercial-fishing activities, to serve as sites for surveying-in more detail using an ROV on subsequent cruises, Several regions of the sea floor throughout the OCNMS were surveyed and mosaicked at 1-meter pixel resolution. Imagery from the side scan sonar mapping efforts was integrated with other complementary data from a towed camera sled, ROVs, sedentary samples, and bathymetry records to describe geological and biological (where possible) aspects of habitat. Using a hierarchical deep-water marine benthic classification scheme (Greene et al. 1999), we created a preliminary map of various habitat polygon features for use in a geographical information system (GIS). This report provides a description of the mapping and groundtruthing efforts as well as results of the image classification procedure for each of the areas surveyed.</p>","language":"English","publisher":"U.S. Department of Commerce","publisherLocation":"Silver Spring, MD","usgsCitation":"Intelmann, S.S., Cochrane, G.R., Bowlby, C.E., Brancato, M.S., and Hyland, J., 2007, Survey report of NOAA Ship McArthur II cruises AR-04-04, AR-05-05 and AR-06-03: habitat classification of side scan sonar imagery in support of deep-sea coral/sponge explorations at the Olympic Coast National Marine Sanctuary, iv, 50 p.","productDescription":"iv, 50 p.","numberOfPages":"60","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":292312,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":292311,"type":{"id":15,"text":"Index Page"},"url":"https://sanctuaries.noaa.gov/science/conservation/mcarthur.html"}],"country":"United States","state":"Washington","otherGeospatial":"Olympic Coast National Marine Sanctuary","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -123.547442,48.269384 ], [ -123.547442,48.100402 ], [ -123.145116,48.100402 ], [ -123.145116,48.269384 ], [ -123.547442,48.269384 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53ef1ed8e4b0bfa1f993f017","contributors":{"authors":[{"text":"Intelmann, Steven S.","contributorId":69072,"corporation":false,"usgs":true,"family":"Intelmann","given":"Steven","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":498383,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cochrane, Guy R. 0000-0002-8094-4583 gcochrane@usgs.gov","orcid":"https://orcid.org/0000-0002-8094-4583","contributorId":2870,"corporation":false,"usgs":true,"family":"Cochrane","given":"Guy","email":"gcochrane@usgs.gov","middleInitial":"R.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true},{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"preferred":true,"id":498379,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bowlby, C. Edward","contributorId":25478,"corporation":false,"usgs":true,"family":"Bowlby","given":"C.","email":"","middleInitial":"Edward","affiliations":[],"preferred":false,"id":498380,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Brancato, Mary Sue","contributorId":67017,"corporation":false,"usgs":true,"family":"Brancato","given":"Mary","email":"","middleInitial":"Sue","affiliations":[],"preferred":false,"id":498382,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hyland, Jeffrey","contributorId":45640,"corporation":false,"usgs":true,"family":"Hyland","given":"Jeffrey","email":"","affiliations":[],"preferred":false,"id":498381,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70047632,"text":"sir20075289H - 2007 - Landscape geochemistry near mineralized areas of eastern Alaska: Chapter H in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>","interactions":[],"lastModifiedDate":"2018-10-22T11:15:37","indexId":"sir20075289H","displayToPublicDate":"2007-01-01T13:30:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-5289","chapter":"H","title":"Landscape geochemistry near mineralized areas of eastern Alaska: Chapter H in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>","docAbstract":"The Pogo lode gold deposit was discovered in eastern \nAlaska in the early 1990s and provided the opportunity \nto study elemental distribution and mobility in the natural \nenvironment prior to mine development. Studying \nmineralized systems prior to mining allows us to compare \nthe natural biogeochemical signature in mineralized versus \nnonmineralized areas. The resultant data and interpretation \nalso provide a baseline for evaluating what, if any, changes in \nelemental distribution result from development. This report \ninvestigates the chemistry of stream water, streambed sediment, and soil in the context of regional bedrock geology. The \nmajor-ion chemistry of the waters reflects a rock-dominated \naqueous system, and the waters are classified as Ca<sup>2+</sup> and \nMg<sup>2+</sup> - HCO<sub>3</sub><sup>-</sup> to Ca<sup>2+</sup> and Mg<sup>2+</sup> - SO<sub>4</sub><sup>-2</sup> waters. Creeks draining \nthe gneissic lithologies tend to be more sulfate dominated \nthan those draining the intrusive units. Sulfate also dominated \ncreeks draining mineralized areas; however, the underlying \nparagneiss unit could be contributing substantially to the \nsulfate concentration, and the sulfate concentration in these \ncreeks may reflect a complex baltholith-paragneiss boundary rather than mineralization. Arsenic concentrations in \nbed sediments were elevated in mineralized areas relative \nto nonmineralized areas. Elevated concentrations of nickel, \nchromium, iron, manganese, and cobalt appear to reflect \nthe presence of ultramafic rocks in the drainage. In general, aqueous metal concentrations were below the State of \nAlaska’s Aquatic Life Criteria and Drinking Water Standards, \nwith the exception of arsenic in stream water, which ranged \nin concentration from less than 1 to 14 micrograms per liter \n(&mu;g/L) and exceeded the drinking water standard at one site. \nThe arsenic and antimony concentration in the A, B, and C \nsoil horizons ranged from 3 to 410 milligrams per kilogram \n(mg/kg), 6.1 to 440 mg/kg, and 2 to 300 mg/kg, respectively, for arsenic and 0.4 to 24 mg/kg, 0.6 to 25 mg/kg, and 0.2 to \n16 mg/kg, respectively, for antimony. The arsenic and antimony concentrations in stream waters correlate well with the \nconcentrations in soils. However, significantly less arsenic and \nantimony was extracted from C horizon soils in water leaching \nexperiments, indicating that the arsenic and antimony in the \nC horizon is present in a less available form than in the A or \nB horizons. Arsenic and antimony uptake by grayleaf willow \n(Salix glauca L.) appears minimal, with arsenic concentrations ranging from less than 0.01 to 0.14 mg/kg and antimony \nconcentrations ranging from less than 0.003 to 0.23 mg/kg \nin willow leaves. In general, the highest concentrations of \nboth arsenic and antimony in water and soils were found \nnear mineralized areas. Elevated arsenic concentrations were \nalso found in bed sediments from mineralized areas. In these \nsample matrices, the presence of arsenic and (or) antimony \nwas a good indicator of contact with mineralized rock units.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project (Scientific Investigations Report 2007-5289)","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20075289H","collaboration":"This report is Chapter H in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>.  For more information, see: <a href=\"http://pubs.usgs.gov/sir/2007/5289/\" target=\"_blank\">Scientific Investigation Report 2007-5289</a>.","usgsCitation":"Wang, B., Gough, L.P., Wanty, R.B., Crock, J.G., Lee, G.K., Day, W.C., and Vohden, J., 2007, Landscape geochemistry near mineralized areas of eastern Alaska: Chapter H in <i>Recent U.S. Geological Survey studies in the Tintina Gold Province, Alaska, United States, and Yukon, Canada--results of a 5-year project</i>: U.S. Geological Survey Scientific Investigations Report 2007-5289, iii, 8 p., https://doi.org/10.3133/sir20075289H.","productDescription":"iii, 8 p.","numberOfPages":"12","costCenters":[{"id":244,"text":"Eastern Mineral Resources Science Center","active":false,"usgs":true},{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":276648,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sir20075289h.jpg"},{"id":276646,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2007/5289/"},{"id":276647,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2007/5289/SIR2007-5289-H.pdf"}],"country":"Canada;United States","state":"Alaska;Yukon","otherGeospatial":"Tintina Gold Province","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -163.0,59.0 ], [ -163.0,67.0 ], [ -126.0,67.0 ], [ -126.0,59.0 ], [ -163.0,59.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"520df867e4b08494c3cb05f1","contributors":{"authors":[{"text":"Wang, Bronwen 0000-0003-1044-2227 bwang@usgs.gov","orcid":"https://orcid.org/0000-0003-1044-2227","contributorId":2351,"corporation":false,"usgs":true,"family":"Wang","given":"Bronwen","email":"bwang@usgs.gov","affiliations":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":482591,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gough, Larry P. lgough@usgs.gov","contributorId":1230,"corporation":false,"usgs":true,"family":"Gough","given":"Larry","email":"lgough@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":482589,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wanty, Richard B. 0000-0002-2063-6423 rwanty@usgs.gov","orcid":"https://orcid.org/0000-0002-2063-6423","contributorId":443,"corporation":false,"usgs":true,"family":"Wanty","given":"Richard","email":"rwanty@usgs.gov","middleInitial":"B.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":482587,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Crock, James G. jcrock@usgs.gov","contributorId":200,"corporation":false,"usgs":true,"family":"Crock","given":"James","email":"jcrock@usgs.gov","middleInitial":"G.","affiliations":[],"preferred":true,"id":482586,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Lee, Gregory K. glee@usgs.gov","contributorId":1220,"corporation":false,"usgs":true,"family":"Lee","given":"Gregory","email":"glee@usgs.gov","middleInitial":"K.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":482588,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Day, Warren C. 0000-0002-9278-2120 wday@usgs.gov","orcid":"https://orcid.org/0000-0002-9278-2120","contributorId":1308,"corporation":false,"usgs":true,"family":"Day","given":"Warren","email":"wday@usgs.gov","middleInitial":"C.","affiliations":[{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true}],"preferred":true,"id":482590,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Vohden, Jim","contributorId":33350,"corporation":false,"usgs":true,"family":"Vohden","given":"Jim","email":"","affiliations":[],"preferred":false,"id":482592,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70120916,"text":"ofr20071397 - 2007 - Cartographic production for the Florida Shelf Habitat (FLaSH) map study: generation of surface grids, contours, and KMZ files","interactions":[],"lastModifiedDate":"2014-08-18T13:20:41","indexId":"ofr20071397","displayToPublicDate":"2007-01-01T13:16:00","publicationYear":"2007","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":"2007-1397","title":"Cartographic production for the Florida Shelf Habitat (FLaSH) map study: generation of surface grids, contours, and KMZ files","docAbstract":"<p>The Florida shelf represents a finite source of economic resources, including commercial and recreational fisheries, tourism, recreation, sand and gravel resources, phosphate, and freshwater reserves. Yet the basic information needed to locate resources, or to interpret and utilize existing data, comes from many sources, dates, and formats. A multi-agency effort is underway to coordinate and prioritize the compilation of suitable datasets for an integrated information system of Florida’s coastal and ocean resources. This report and the associated data files represent part of the effort to make data accessible and useable with computer-mapping systems, web-based technologies, and user-friendly visualization tools. Among the datasets compiled and developed are seafloor imagery, marine sediment data, and existing bathymetric data. A U.S. Geological Survey-sponsored workshop in January 2007 resulted in the establishment of mapping priorities for the state. Bathymetry was identified as a common priority among agencies and researchers. State-of-the-art computer-mapping techniques and data-processing tools were used to develop shelf-wide raster and vector data layers. Florida Shelf Habitat (FLaSH) Mapping Project (<a href=\"http://coastal.er.usgs.gov/flash\">http://coastal.er.usgs.gov/flash</a>) endeavors to locate available data, identify data gaps, synthesize existing information, and expand our understanding of geologic processes in our dynamic coastal and marine systems.</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071397","usgsCitation":"Robbins, L.L., Hansen, M., Raabe, E., Knorr, P.O., and Browne, J., 2007, Cartographic production for the Florida Shelf Habitat (FLaSH) map study: generation of surface grids, contours, and KMZ files: U.S. Geological Survey Open-File Report 2007-1397, HTML Document, https://doi.org/10.3133/ofr20071397.","productDescription":"HTML Document","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":292444,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":292443,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2007/1397/"}],"country":"United States","state":"Florida","otherGeospatial":"Florida Shelf","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -87.0,25.0 ], [ -87.0,30.0 ], [ -80.0,30.0 ], [ -80.0,25.0 ], [ -87.0,25.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53f25fc4e4b03334187188fa","contributors":{"authors":[{"text":"Robbins, Lisa L. 0000-0003-3681-1094 lrobbins@usgs.gov","orcid":"https://orcid.org/0000-0003-3681-1094","contributorId":422,"corporation":false,"usgs":true,"family":"Robbins","given":"Lisa","email":"lrobbins@usgs.gov","middleInitial":"L.","affiliations":[{"id":574,"text":"St. Petersburg Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":498611,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hansen, Mark","contributorId":81893,"corporation":false,"usgs":true,"family":"Hansen","given":"Mark","affiliations":[],"preferred":false,"id":498613,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Raabe, Ellen","contributorId":98402,"corporation":false,"usgs":true,"family":"Raabe","given":"Ellen","affiliations":[],"preferred":false,"id":498614,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Knorr, Paul O. pknorr@usgs.gov","contributorId":3691,"corporation":false,"usgs":true,"family":"Knorr","given":"Paul","email":"pknorr@usgs.gov","middleInitial":"O.","affiliations":[{"id":574,"text":"St. Petersburg Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":498612,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Browne, Joseph","contributorId":102398,"corporation":false,"usgs":true,"family":"Browne","given":"Joseph","email":"","affiliations":[],"preferred":false,"id":498615,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70103487,"text":"ofr20071047SRP108 - 2007 - Structure of the central Terror Rift, western Ross Sea, Antarctica","interactions":[],"lastModifiedDate":"2014-05-05T13:32:52","indexId":"ofr20071047SRP108","displayToPublicDate":"2007-01-01T13:15:00","publicationYear":"2007","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":"2007-1047-SRP-108","title":"Structure of the central Terror Rift, western Ross Sea, Antarctica","docAbstract":"The Terror Rift is a zone of post-middle Miocene faulting and volcanism along the western margin of the \nWest Antarctic Rift System. A new seismic data set from NSF geophysical cruise NBP04-01, integrated with the \nprevious dataset to provide higher spatial resolution, has been interpreted in this study in order to improve \nunderstanding of the architecture and history of the Terror Rift. The Terror Rift contains two components, a \nstructurally-controlled rollover anticlinal arch intruded by younger volcanic bodies and an associated synclinal basin. \nOffsets and trend changes in fault patterns have been identified, coincident with shifts in the location of depocenters that \ndefine rift sub-basins, indicating that the Terror Rift is segmented by transverse structures. Multiple phases of faulting \nall post-date 17 Ma, including faults cutting the seafloor surface, indicating Neogene rifting and possible modern \nactivity.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Antarctica: A Keystone in a Changing World--Online Proceedings for the Tenth International Symposium on Antarctic Earth Sciences. Santa Barbara, California, U.S.A.--August 26 to September 1, 2007","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071047SRP108","usgsCitation":"Hall, J., Wilson, T., and Henrys, S., 2007, Structure of the central Terror Rift, western Ross Sea, Antarctica: U.S. Geological Survey Open-File Report 2007-1047-SRP-108, 5 p., https://doi.org/10.3133/ofr20071047SRP108.","productDescription":"5 p.","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":286881,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071047SRP108.JPG"},{"id":286880,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1047/srp/srp108/of2007-1047srp108.pdf"}],"otherGeospatial":"Antarctica","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,-60.0 ], [ 180.0,-60.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5368b2fee4b059f7e8288385","contributors":{"authors":[{"text":"Hall, Jerome","contributorId":68656,"corporation":false,"usgs":true,"family":"Hall","given":"Jerome","email":"","affiliations":[],"preferred":false,"id":493363,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wilson, Terry","contributorId":33618,"corporation":false,"usgs":true,"family":"Wilson","given":"Terry","affiliations":[],"preferred":false,"id":493362,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Henrys, Stuart","contributorId":21464,"corporation":false,"usgs":true,"family":"Henrys","given":"Stuart","affiliations":[],"preferred":false,"id":493361,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70160272,"text":"70160272 - 2007 - Yellowstone grizzly bear investigations: Annual report of the Interagency Grizzly Bear Study Team, 2006","interactions":[],"lastModifiedDate":"2022-09-13T15:38:18.03936","indexId":"70160272","displayToPublicDate":"2007-01-01T13:15:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"seriesTitle":{"id":3,"text":"Annual Report","active":false,"publicationSubtype":{"id":1}},"title":"Yellowstone grizzly bear investigations: Annual report of the Interagency Grizzly Bear Study Team, 2006","docAbstract":"<p>The contents of this Annual Report summarize results of monitoring and research from the 2006 field season. The report also contains a summary of nuisance grizzly bear (<i>Ursus arctos horribilis</i>) management actions.</p>\n<p>The Interagency Grizzly Bear Study Team (IGBST) continues to work on issues associated with counts of unduplicated females with cubs-of- the-year (COY). These counts are used to establish a minimum population size, which is then used to establish mortality thresholds for the Recovery Plan (U.S. Fish and Wildlife Service [USFWS] 1993). After considerable delays due to programming issues, a computer program that defines the rule set used by Knight et al. (1995) to differentiate unique family groups was development and tested in 2005 and 2006. Simulations using observations of collared females with COY were randomly sampled to generate datasets of observations of random females with COY. These datasets were then run though the simulations program to test the accuracy of the rules. Data are currently being summarized. This project has been completed and a manuscript was submitted to the Journal of Wildlife Management.</p>\n<p>The grizzly bear recovery plan (USFWS 1993) established human-caused mortality quotas. We used the latest information on reproduction and survival to estimate population trajectory in the same simulation model originally used by Harris (1984). A Wildlife Monographs was published in 2006. Additionally, the study team, in cooperation with several quantitative experts, reassessed how population size is indexed and how sustainable mortality rates are established. A draft report was presented to the Yellowstone Ecosystem Subcommittee in spring 2005. It was published as part of the USFWS Delisting Rule (Federal Register Vol. 70, No. 221, Nov. 17, 2005, 69853&ndash;69884) and subjected to public comment. This workshop document can be found at http://www.fws.gov/mountain-prairie/species/mammals/grizzly/yellowstone.htm. During the summer of&nbsp;2006, a second workshop was held to address public comment and professional peer review. The result of this workshop was a supplement to the 2005 workshop document. This supplement can be found at http://www.fws.gov/mountain-prairie/species/mammals/grizzly/yellowstone.htm under the link Revised Methods to Estimate Population Size and Sustainable Mortality Limits. Results of those estimates are provided in Appendix A.</p>\n<p>Our project addressing the potential application of stable isotopes and trace elements to quantify consumption rates of whitebark pine (<i>Pinus albicaulis</i>) and cutthroat trout (<i>Oncorhynchus clarki</i>) by grizzly bears was completed. Our manuscript on consumption rates of whitebark pine was published in the Canadian Journal of Zoology 81:763-770. Results of the mercury studies were also published in the Canadian Journal of Zoology 82:493&ndash;501. Copies can be found on the IGBST website http://www.nrmsc.usgs.gov/research/igbst-home.htm. Based upon this work, we submitted a proposal to analyze all historic tissue samples from grizzly bears in the ecosystem. That proposal was funded and samples have been sent to a lab for isotopic analysis. We hope to have those results in early 2008.</p>\n<p>Results of DNA hair snaring work conducted on Yellowstone Lake were submitted and published in the Journal Ursus (Haroldson et al. 2005). Results of this study conducted from 1997&ndash;2000 showed a decline in fish use by grizzly bears when compared to earlier work conducted by Reinhart (1990) in 1985&ndash;1987. As a consequence, the IGBST submitted a proposal to the National Park Service and received 3 years funding to repeat that work. This project began in 2007. There are 2 graduate students and several field technicians working on the program.</p>\n<p>We completed the final field season in Grand Teton National Park evaluating habitat use both temporally and spatially between grizzly and black bears (<i>Ursus americanus</i>). We continue to use GPS technology that incorporates a spread spectrum communication system. Spread spectrum allows for transfer of stored GPS locations from the collar to a remote receiving station. Results of the 2006 field season are reported here. We plan to complete the final report in late 2007.</p>\n<p>We continued to monitor the health of whitebark pine in the Greater Yellowstone Ecosystem (GYE) in cooperation with the Greater Yellowstone Whitebark Pine Monitoring Working Group. A summary of the 2006 monitoring is also presented (Appendix B).</p>\n<p>The IGBST uses counts of winter-killed ungulates to index spring carcass abundance for grizzly bears. Likewise, we use wier counts and stream surveys to index cutthroat trout abundance. We ask Dr. Steve Cherry, Department of Mathematical Sciences, Montana State University-Bozeman, to review the protocols and make recommendations for improving them. That review and recommendations are presented in Appendix C.</p>\n<p>Finally, the state of Wyoming, following recommendations from the Yellowstone Ecosystem Subcommittee and the IGBST, launched the Bear Wise Community Effort. The focus is to minimize human/bear conflicts, minimize human-caused bear mortalities associated with conflicts, and safeguard the human community. Results of these efforts are detailed in Appendix D.</p>\n<p>The annual reports of the IGBST summarize annual data collection. Because additional information can be obtained after publication, data summaries are subject to change. For that reason, data analyses and summaries presented in this report supersede all previously published data. The study area and sampling techniques are reported by Blanchard (1985), Mattson et al. (1991 a), and Haroldson et al. (1998).</p>","language":"English","publisher":"Interagency Grizzly Bear Study Team","usgsCitation":"2007, Yellowstone grizzly bear investigations: Annual report of the Interagency Grizzly Bear Study Team, 2006: Annual Report, 68 p.","productDescription":"68 p.","numberOfPages":"72","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"links":[{"id":312325,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":312324,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://www.sciencebase.gov/catalog/file/get/6266a697d34e76103cce5808?f=__disk__62%2F77%2F68%2F627768e4d94681a6b816fe22832ab40ec615ef4a","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Idaho, Montana, Wyoming","otherGeospatial":"Greater Yellowstone Ecosystem","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -111.68701171875,\n              42.85985981506279\n            ],\n            [\n              -109.27001953125,\n              42.85985981506279\n            ],\n            [\n              -109.27001953125,\n              45.583289756006316\n            ],\n            [\n              -111.68701171875,\n              45.583289756006316\n            ],\n            [\n              -111.68701171875,\n              42.85985981506279\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"567147f6e4b09cfe53ca7d90","contributors":{"editors":[{"text":"Schwartz, Charles C.","contributorId":124574,"corporation":false,"usgs":false,"family":"Schwartz","given":"Charles","email":"","middleInitial":"C.","affiliations":[{"id":5119,"text":"Retired from U.S. Geological Survey, Interagency Grizzly Bear Study Team, Northern Rocky Mountain Science Center, 2327 University Way, suite 2, Bozeman, MT 59715","active":true,"usgs":false}],"preferred":false,"id":582397,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Haroldson, Mark A. 0000-0002-7457-7676 mharoldson@usgs.gov","orcid":"https://orcid.org/0000-0002-7457-7676","contributorId":1773,"corporation":false,"usgs":true,"family":"Haroldson","given":"Mark","email":"mharoldson@usgs.gov","middleInitial":"A.","affiliations":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"preferred":true,"id":582398,"contributorType":{"id":2,"text":"Editors"},"rank":2},{"text":"West, Karrie K. karrie_west@usgs.gov","contributorId":4055,"corporation":false,"usgs":true,"family":"West","given":"Karrie","email":"karrie_west@usgs.gov","middleInitial":"K.","affiliations":[],"preferred":true,"id":582399,"contributorType":{"id":2,"text":"Editors"},"rank":3}]}}
,{"id":70121082,"text":"70121082 - 2007 - USGS Tampa Bay Pilot Study","interactions":[],"lastModifiedDate":"2014-08-19T14:23:39","indexId":"70121082","displayToPublicDate":"2007-01-01T13:12:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":3,"text":"Organization Series"},"title":"USGS Tampa Bay Pilot Study","docAbstract":"<p>Many of the nation's estuaries have been environmentally stressed since the turn of the 20th century and will continue to be impacted in the future. Tampa Bay, one the Gulf of Mexico's largest estuaries, exemplifies the threats that our estuaries face (EPA Report 2001, Tampa Bay Estuary Program-Comprehensive Conservation and Management Plan (TBEP-CCMP)). More than 2 million people live in the Tampa Bay watershed, and the population constitutes to grow. Demand for freshwater resources, conversion of undeveloped areas to resident and industrial uses, increases in storm-water runoff, and increased air pollution from urban and industrial sources are some of the known human activities that impact Tampa Bay. Beginning on 2001, additional anthropogenic modifications began in Tampa Bat including construction of an underwater gas pipeline and a desalinization plant, expansion of existing ports, and increased freshwater withdrawal from three major tributaries to the bay.</p>\n<br>\n<p>In January of 2001, the Tampa Bay Estuary Program (TBEP) and its partners identifies a critical need for participation from the U.S. Geological Survey (USGS) in providing multidisciplinary expertise and a regional-scale, integrated science approach to address complex scientific research issue and critical scientific information gaps that are necessary for continued restoration and preservation of Tampa Bay. Tampa Bay stakeholders identified several critical science gaps for which USGS expertise was needed (Yates et al. 2001). These critical science gaps fall under four topical categories (or system components): 1) water and sediment quality, 2) hydrodynamics, 3) geology and geomorphology, and 4) ecosystem structure and function. Scientists and resource managers participating in Tampa Bay studies recognize that it is no longer sufficient to simply examine each of these estuarine system components individually, Rather, the interrelation among system components must be understood to develop conceptual and predictive modeling tools for effective ecosystem adaptive management. As a multidisciplinary organization, the USGS possesses the capability of developing and coordinating an integrated science strategy for estuarine research founded on partnerships and collaborative efforts, multidisciplinary teams of scientists, and integrated field work, data analysis and interpretation, and product development. The primary role of the USGS in Tamps Bay research was defined with our partners based upon this capability to address estuarine issues using an integrated science approach with a regional perspective and within a national context to complement the numerous ongoing scien efforts by state and local agencies that address local issues within Tamp Bay. Six primary components of the USGS Tamp Bay Study address critical gaps within each of the the four estuarine system components and focus on:</p>\n<br>\n<p>1.) Examining how natural and man-made \nphysical changes affect ecosystem health \nthrough mapping and modeling.</p>\n<p>2.) Identifying sources and quality of \ngroundwater, surface water, and \nsediment,</p>\n<p>3.) Identifying sources and quality of \ngroundwater, surface water, and \nsediment,</p>\n<p>4.) Assessing the natural and man-made \nchanges affecting wetland health and \nrestoration,</p>\n<p>5.) Identifying and measuring the impact of \nurbanization on seafloor habitats,</p>\n<p>Providing a web-based digital \ninformation management system of information for scientists and the public, \nincluding a system that supports the work \nof those officials who must make \ndecisions that affect the state of the bay.</p>\n<br>\n<p>The Tampa Bay Study is in its sixth year and will \ncontinue through September 2007. This paper \npresents a non-inclusive summary of key findings \nassociated with the six primary project \ncomponents listed above. Component 4 (above) is \ndescribed in detail in the following chapter 13. \nMore information on the Tampa Bay Study is \navailable from our on-line digital information \nsystem for the Tampa Bay Study at \nhttp://gulfsci.usgs.gov.</p>","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Baywide Environmental Monitoring Report, 2002-2005","largerWorkSubtype":{"id":3,"text":"Organization Series"},"language":"English","publisher":"Tampa Bay Estuary Program","publisherLocation":"St. Petersburg, FL","usgsCitation":"Yates, K.K., Cronin, T.M., Crane, M., Hansen, M., Nayeghandi, A., Swarzenski, P., Edgar, T., Brooks, G.R., Suthard, B., Hine, A., Locker, S., Willard, D., Hastings, D., Flower, B., Hollander, D., Larson, R., and Smith, K., 2007, USGS Tampa Bay Pilot Study, 17 p.","productDescription":"17 p.","startPage":"13-1","endPage":"13-17","numberOfPages":"17","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":292579,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Florida","otherGeospatial":"Tampa Bay","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -82.881921,27.346605 ], [ -82.881921,28.096584 ], [ -82.301152,28.096584 ], [ -82.301152,27.346605 ], [ -82.881921,27.346605 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53f464d0e4b073ff773a7d7c","contributors":{"authors":[{"text":"Yates, K. K.","contributorId":108056,"corporation":false,"usgs":true,"family":"Yates","given":"K.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":498790,"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":498775,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Crane, M.","contributorId":86957,"corporation":false,"usgs":true,"family":"Crane","given":"M.","email":"","affiliations":[],"preferred":false,"id":498784,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hansen, M.","contributorId":34670,"corporation":false,"usgs":true,"family":"Hansen","given":"M.","affiliations":[],"preferred":false,"id":498774,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Nayeghandi, A.","contributorId":91792,"corporation":false,"usgs":true,"family":"Nayeghandi","given":"A.","email":"","affiliations":[],"preferred":false,"id":498785,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Swarzenski, P. 0000-0003-0116-0578","orcid":"https://orcid.org/0000-0003-0116-0578","contributorId":49156,"corporation":false,"usgs":true,"family":"Swarzenski","given":"P.","affiliations":[],"preferred":false,"id":498777,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Edgar, T.","contributorId":70595,"corporation":false,"usgs":true,"family":"Edgar","given":"T.","email":"","affiliations":[],"preferred":false,"id":498781,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Brooks, G. 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