urn:ieda:metadataabout:10.7265-N59W0CDC
eng
dataset
Dataset
Interdisciplinary Earth Data Alliance
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2018-05-17
ISO 19139 Geographic Information - Metadata - Implementation Specification
2007
Subglacial Topography: Airborne Geophysical Survey of the Amundsen Sea Embayment, Antarctica
2006-10-25
publication
doi:10.7265/N59W0CDC
Holt, John W.
4412 Spicewood Springs Rd. #600, Austin, TX, 78759-850, USA
author
Blankenship, Donald D.
4412 Spicewood Springs Rd. #600, Austin, TX, 78759-8500, USA
blank@ig.utexas.edu
author
Morse, David L.
Austin, TX,
author
Vaughan, David G.
High Cross, Madingley Road, CAMBRIDGE, CB3 0ET, United Kingdom, Cambridge, United Kingdom
dgv@bas.ac.uk
author
Corr, Hugh F. J.
High Cross, Madingley Road, Cambridge, CB3 0ET, United Kingdom, Cambridge, United Kingdom
hfjc@bas.ac.uk
author
Young, Duncan A.
J.J. Pickle Research Campus, Bldg. 196, 10100 Burnet Road (R2200), Austin, TX 78758-4445, Austin, Texas, 78758-4445, USA
duncan@ig.utexas.edu
http://orcid.org/ORCID:0000-0002-6866-8176
ORCID
author
U.S. Antarctic Program (USAP) Data Center
publisher
Abstract: 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.
These data are available via FTP.
Complete
Holt, John W.
4412 Spicewood Springs Rd. #600, Austin, TX, 78759-850, USA
pointOfContact
1
Airborne Radar
method
Antarctic Glaciology
program
AGASEA
project
Bathymetry/Topography
Glaciology
IEDA data type categories
IEDA integrated catalog keyword vocabulary
2017-10-11
creation
Antarctica
Glaciers/Ice Sheet
IEDA feature of interest
IEDA integrated catalog keyword vocabulary
2017-10-11
creation
Cryosphere
Solid Earth
IEDA topic
IEDA integrated catalog keyword vocabulary
2017-10-11
creation
Amundsen Sea Embayment
place
US Antarctic Program Data Center (USAP-DC)
Data Center
Creative Commons Attribution-NonCommercial-Share Alike 3.0 United States [CC BY-NC-SA 3.0]
Creative Commons Attribution-NonCommercial-Share Alike 3.0 United States [CC BY-NC-SA 3.0]
Holt, 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.
URN
IsReferencedBy
eng
geoscientificInformation
Amundsen Sea Embayment
-134.9
-84.5
-81.7
-71.7
2004-11-01
2005-03-31
http://dx.doi.org/10.7265/N59W0CDC
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http://www.usap-dc.org/view/dataset/609292
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This metadata record was generated by an xslt transformation from a DataCite metadata record; The transform was created by Damian Ulbricht and Stephen M. Richard. 2017-11-15 these records include new IEDA keywords for geoportal facets Run on 2018-06-21T19:05:27-07:00
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