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Collaborative Research: Anisotropy, Abrupt Climate Change, and the Deep Ice in West Antarctica
Entry ID: pettit_0940650

Abstract: This award supports a project to constrain the accumulation rate, thickness, and temperature history for Siple Dome using a vertical velocity profile that includes the effects of an evolving fabric on deformation through time, to invert the depth-profile of fabric determined from sonic velocity measurements and grain size observed in thin sections in Siple Dome for the surface temperature and ... View entire text

Purpose: The intellectual merit of the work is that it will extract past climate information from a number of physical properties of the deep ice using a coupled fabric evolution and ice-sheet flow model. The focus will be on the deep ice-age ice at Siple Dome, where the ice-core record shows puzzling signals and where modeling results imply intriguing deformation patterns. The method will also be applied ... View entire text
Geographic Coverage
Spatial coordinates   
  N: -75.0   S: -85.0   E: -105.0   W: -165.0

Data Set Citation
Version: Not provided
Temporal Coverage
Start Date: 1970-01-01
Data Set Progress
Data Center
NSIDC Antarctic Glaciological Data Center Supplemental Info
Data Center URL:

Data Center Personnel
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at
Contact Address:
National Snow and Ice Data Center
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA
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Phone: (907) 474-5389
Email: pettit at
Contact Address:
Department of Geology and Geophysics
University of Alaska Fairbanks
900 Yukon Dr. Rm 308
City: Fairbanks
Province or State: Alaska
Postal Code: 99775
Country: USA
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2012-09-04
Last DIF Revision Date: 2018-10-01