USAP-DC

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AGASEA Ice Thickness Profile Data from the Amundsen Sea Embayment, Antarctica Data DOI: https://doi.org/10.7265/N5W95730 Cite as Blankenship, D. D., Holt, J. W., Kempf, S. D., & Young, D. A. (2012) "AGASEA Ice Thickness Profile Data from the Amundsen Sea Embayment, Antarctica" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.7265/N5W95730. AMD - DIF Record(s) NSIDC-0517_1 Abstract 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. Creator(s): Blankenship, Donald D.; Young, Duncan A.; Holt, John W.; Kempf, Scott D. Date Created: 2012-05-03 Repository: USAP-DC (current) - NSIDC (original) License: Creative Commons Attribution-NonCommercial v4.0 Generic [CC BY-NC 4.0] Spatial Extent(s) West: -125, East: -90, South: -83, North: -73 Temporal Extent(s) Start: 2004-12-10 - End: 2005-01-29 Award(s) NSF 0636724 Version: 1 Related Project(s) Collaborative Research: Synthesis of Thwaites Glacier Dynamics: Diagnostic and Prognostic Sensitivity Studies of a West Antarctic Outlet System References 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) 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) 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) Keywords AGASEA Airborne Radar Amundsen Sea Antarctica Elevation Glaciers/ice Sheet Glaciology Ice Thickness