2024-03-28T13:56:48Zhttp://nsidc.org/api/dataset/metadata/oaioai:nsidc.org/NSIDC-0292.0012018-12-13T20:28:03Zbrokered
NSIDC-0292.001Subglacial Topography: Airborne Geophysical Survey of the Amundsen Sea Embayment, AntarcticaHolt, J. W., D. D. Blankenship, and D. L. Morse.Subglacial Topography: Airborne Geophysical Survey of the Amundsen Sea Embayment, Antarctica2006-10-25Boulder, Colorado USANSIDC: National Snow and Ice Data Center1false10.7265/N59W0CDChttps://doi.org/10.7265/N59W0CDCNSIDC-0292InvestigatorJohnW.Holt4412 Spicewood Springs Rd. #600AustinTX 78759-850USAInvestigatorDonaldD.Blankenshipblank@ig.utexas.edu4412 Spicewood Springs Rd. #600AustinTX78759-8500USAInvestigatorDavidL.MorseAustinTXInvestigatorDavidG.Vaughandgv@bas.ac.ukHigh Cross, Madingley RoadCAMBRIDGECB3 0ETUnited KingdomCambridgeUnited KingdomInvestigatorHughF. J.Corrhfjc@bas.ac.ukHigh Cross
Madingley Road
Cambridge
CB3 0ET
United KingdomCambridgeUnited KingdomInvestigatorDuncanA.YoungJ.J. Pickle Research CampusBldg. 19610100 Burnet Road (R2200)Austin, TX 78758-4445AustinTexas78758-4445USATechnical ContactNSIDCUser Servicesnsidc@nsidc.org1-303-492-61991-303-492-2468CIRES, 449 UCBUniversity of ColoradoBoulderCO80309-0449USAEARTH SCIENCECryosphereGlaciers/Ice SheetsGlacier Topography/Ice Sheet Topography GLACIER TOPOGRAPHY/ICE SHEET TOPOGRAPHYEARTH SCIENCETerrestrial HydrosphereGlaciers/Ice SheetsGlacier Topography/Ice Sheet Topography GLACIER TOPOGRAPHY/ICE SHEET TOPOGRAPHYEARTH SCIENCECryosphereSnow/IceIce Depth/Thickness ICE DEPTH/THICKNESSEARTH SCIENCETerrestrial HydrosphereSnow/IceIce Depth/Thickness ICE DEPTH/THICKNESSEARTH SCIENCEOceansBathymetry/Seafloor TopographySeafloor Topography SEAFLOOR TOPOGRAPHYEARTH SCIENCELand SurfaceTopographyTerrain Elevation TERRAIN ELEVATIONClimatology/Meteorology/AtmosphereGeoscientific InformationAGDCAGDC-projectAirborne geophysical survey of the Amundsen Sea Embayment, Antarctica (AGASEA)Amundsen BasinAmundsen Sea EmbaymentAntarcticaIce Sheet ElevationPine Island GlacierSubglacial TopographyThwaites GlacierWAISWest AntarcticaWest Antarctic Ice SheetGPSGlobal Positioning SystemRADARRadio Detection and RangingRADAR ECHO SOUNDERSAIRCRAFT2004-11-012005-03-31complete-81.7-71.7-134.9-84.5ContinentAntarcticaAmundsen Sea Embayment5 km5 kmEnglishAGDCFTP140 KBBinaryFTP1.32 MBASCIIHolt, J. W., D. D. Blankenship, D. L. Morse, D. A. Young, M. E. Peters, S. D. Kempf, et. al. 2006. New boundary conditions for the West Antarctic Ice Sheet: subglacial topography of the Thwaites and Smith glacier catchments. Geophysical Research Letters 33, L09502. doi:10.1029/2005GL025561.
Vaughan, D. G., H. F. J. Corr, F. Ferraccioli, N. Frearson, A. O'Hare, D. Mach, J. Holt, et. al. 2006. New boundary conditions for the West Antarctic Ice Sheet: subglacial topography beneath Pine Island Glacier. Geophysical Research Letters 33, L09501. doi:10.1029/2005GL025588.This data set includes 5 km gridded data from the Airborne Geophysical Survey of the Amundsen Sea Embayment, Antarctica (AGASEA) conducted during the 2004-2005 austral summer. Investigators derived maps of the ice sheet surface and subglacial topography, which covers the entire catchments of both the Thwaites Glacier and the Pine Islands Glacier, from airborne survey systems mounted on a Twin Otter aircraft. The surveys had sufficient density to identify critical ice dynamic transitions within the Amundsen Sea Embayment (ASE).
The ASE is the only major drainage to exhibit significant elevation change over the period of available satellite observations. Modeling of the Western Antarctic Ice Sheet (WAIS) deglaciation pinpointed the Pine Island Glacier and the Thwaites Glacier, which comprise a major portion of the ASE, as the most vulnerable features of the WAIS. Present knowledge of the ice thickness and subglacial boundary conditions in the ASE are insufficient to understand its evolution or its sensitivity to climatic change, and it is not yet determined whether these changes are evidence of ongoing deglaciation or simply a fluctuation that does not threaten the equilibrium of the ice sheet. This research will support the efforts of a community of United States and international researchers to assess the present and predict the future behavior of the ice sheet in the ASE.VIEW RELATED INFORMATIONhttps://doi.org/10.7265/N59W0CDCDocumentationGET DATAhttp://www.usap-dc.org/view/dataset/609292Get External DataPROJECT HOME PAGEhttp://www.ig.utexas.edu/research/projects/agasea/Airborne geophysical survey of the Amundsen Sea Embayment, Antarctica (AGASEA)VIEW RELATED INFORMATIONhttp://nsidc.org/data/nsidc-0099.htmlIce Thickness and Surface Elevation, Southeastern Ross Embayment, West AntarcticaAMD/USCEOS IDN DIFVERSION 9.92006-10-252018-12-13NSIDCVersion SummaryNSIDCMinor VersionNSIDCCurrent Version1NSIDCFull Dataset CitationHolt, J. W., D. D. Blankenship, and D. L. Morse. 2006. <i>Subglacial Topography: Airborne Geophysical Survey of the Amundsen Sea Embayment, Antarctica.</i> [indicate subset used]. Boulder, Colorado USA: National Snow and Ice Data Center. <a href="https://doi.org/10.7265/N59W0CDC">https://doi.org/10.7265/N59W0CDC</a>. [Date Accessed].NSIDCRetiredfalse