USAP-DC

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Radar Studies of Internal Stratigraphy and Bedrock Topography along the US ITASE Traverse Start Date: 1999-04-01 End Date: 2005-03-31 Program: ITASE Description/Abstract This award supports a program of radar studies of internal stratigraphy and bedrock topography along the traverses for the U.S. component of the International Trans-Antarctic Scientific Expedition (US ITASE). The radar will provide information immediately available in the field on ice thickness and internal layer structure to help in the selection of core sites as the traverse proceeds. These data will also be useful in siting deeper millennial scale cores planned at less frequent intervals along the traverse, and in the selection of the location for the deep inland core planned for the future. In addition to continuous coverage along the traverse route, more detailed studies on a grid surrounding each of the core locations will be made to better characterize accumulation and bedrock topography in each area. This proposal is complimentary to the one submitted by the Cold Regions Research and Engineering Laboratory (CRREL), which proposes a high frequency radar to examine the shallower portion of the record down to approximately 60 meters, including the presence of near-surface crevasses. The radar proposed herein is most sensitive at depths below 60 meters and can depict deep bedrock and internal layers to a substantial fraction of the ice thickness. Personnel Person Role Jacobel, Robert Investigator Welch, Brian Co-Investigator Funding Antarctic Glaciology Award # 9814574 AMD - DIF Record(s) NSIDC-0264_1 Data Management Plan None in the Database Product Level: Not provided Datasets Repository Title (link) Format(s) Status USAP-DC Ice Thickness and Internal Layer Depth Along the 2001 and 2002 US ITASE Traverses JPEG exist Publications Holschuh, N., Christianson, K., Conway, H., Jacobel, R. W., & Welch, B. C. (2018). Persistent tracers of historic ice flow in glacial stratigraphy near Kamb Ice Stream, West Antarctica. The Cryosphere, 12(9), 2821–2829. (doi:10.5194/tc-12-2821-2018) Holschuh, N., Christianson, K., Conway, H., Jacobel, R. W., & Welch, B. C. (2018). Persistent Tracers of Historic Ice Flow in Glacial Stratigraphy near Kamb Ice Stream, West Antarctica. (doi:10.5194/tc-2018-58) Keywords Antarctica CENOZOIC Depth HOLOCENE Ice Thickness PHANEROZOIC QUATERNARY Radar Radar Echo Sounder Radar Echo Sounding Traverses US ITASE West Antarctica Platforms and Instruments GROUND-BASED OBSERVATIONS RADAR RADAR ECHO SOUNDERS