Dataset Information
AGASEA Ice Thickness Profile Data from the Amundsen Sea Embayment, Antarctica
Data DOI:
Cite as
Blankenship, D. D. et al. (2012) "AGASEA Ice Thickness Profile Data from the Amundsen Sea Embayment, Antarctica" U.S. Antarctic Program (USAP) Data Center. doi:
AMD - DIF Record(s)
This data set contains line-based radar-derived ice thickness and bed elevation data, collected as part of the Airborne Geophysical Survey of the Amundsen Embayment (AGASEA) expedition, which took place over Thwaites Glacier in West Antarctica from 2004 to 2005. The data set includes ice thickness, ice sheet bed elevation, and ice sheet surface elevation, derived from ice-penetrating radar and aircraft GPS positions. The data are spaced on a 15 km by 15 km grid over the entire catchment of the glacier, and sampled at approximately 15 meters along track. Most of the radar data used for this dataset has been processed using a 1-D focusing algorithm, to reduce the along track resolution to tens of meters, to improve boundary conditions for ice sheet models. Data are available via FTP in space-delimited ASCII format.
Blankenship, Donald D.; Young, Duncan A.; Holt, John W.; Kempf, Scott D.
Date Created:
USAP-DC (current) - NSIDC (original)
Spatial Extent(s)
West: -125, East: -90, South: -83, North: -73
Temporal Extent(s)
Start: 2004-12-10 - End: 2005-01-29
  1. Holt, J. W., D. D. Blankenship, D. L. Morse, D. A. Young, M. E. Peters, S. D. Kempf, T. G. Richter, D. G. Vaughan, H. F. J. Corr. 2006. New boundary conditions for the West Antarctic Ice Sheet; subglacial topography of the Thwaites and Smith Glacier catchments. Geophysical Research Letters L09502, doi: 10.1029/2005GL025561 (doi:10.1029/2005GL025561)
  2. Peters, M. E., D. D. Blankenship, S. P. Carter, D. A. Young, S. D. Kempf, and J. W. Holt. 2007. Along-Track Focusing of Airborne Radar Sounding Data from West Antarctica for Improving Basal Reflection Analysis and Layer Detection, IEEE Transactions on Geoscience and Remote Sensing, 45(9), 2725-2736. (doi:10.1109/TGRS.2007.897416)
  3. Peters, M. E., D. D. Blankenship, and D. L. Morse. 2005. Analysis Techniques for Coherent Airborne Radar Sounding: Application to West Antarctic Ice Streams, Journal of Geophysical Research, 110(B06303). (doi:10.1029/2004JB003222)
Supplemental Docs
Data Files
245.8 MB
81.5 kB

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