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Airborne Laser Altimetry of the Thwaites Glacier Catchment, West Antarctica Data DOI: https://doi.org/10.7265/N5HD7SK8 Cite as Young, D. A., Blankenship, D. D., Holt, J. W., Kempf, S. D., & Morse, D. L. (2008) "Airborne Laser Altimetry of the Thwaites Glacier Catchment, West Antarctica" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.7265/N5HD7SK8. AMD - DIF Record(s) NSIDC-0334_1 Abstract This data set includes airborne altimetry collected over the catchment and main trunk of Thwaites Glacier, one of Antarctica's most active ice streams. The airborne altimetry comprises 35,000 line-kilometers sampled at 20 meters along track. The full dataset has an internal error of ±20 cm; a primary subset has an error of ±8 cm. We find a +20 cm bias with Geoscience Laser Altimeter System data over a flat interior region. These data will serve as an additional temporal reference for the evolution of Thwaites Glacier surface, as well as aid the construction of future high resolution Digital Elevation Models (DEM). Line data are available in space-delimited ASCII format and are available via FTP. Creator(s): Young, Duncan A.; Kempf, Scott D.; Blankenship, Donald D.; Holt, John W.; Morse, David L. Date Created: 2008-01-01 Repository: USAP-DC (current) - NSIDC (original) License: Creative Commons Attribution-NonCommercial v4.0 Generic [CC BY-NC 4.0] Spatial Extent(s) West: -130, East: -95, South: -80, North: -75 Temporal Extent(s) Start: 2004-12-10 - End: 2005-01-29 Award(s) NSF 0230197 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) Blankenship, D. D., D. Morse, C. A. Finn, R. E. Bell, M. E. Peters, S. D. Kempf, S. M. Hodge, M. Studinger, J. C. Behrendt, and J. M. Brozena (2001), Geological controls on the initiation of rapid basal motion for West Antarctic Ice Streams: A geophysical perspective including new airborne radar sounding and laser altimetry results, in The West Antarctic Ice Sheet: Behavior and Environment, Antarctic Research Series, vol. 77, edited by R. B. Alley and R. A. Bindschadler, pp. 105–121, American Geophysical Union. Young, D. A., S. D. Kempf, D. D. Blankenship, J. W. Holt, and D. L. Morse (in press), New airborne laser altimetry over the Thwaites Glacier Catchment, West Antarctica, Geochemistry, Geophysics, Geosystems, 10.1029/2007GC001935. (doi:10.1029/2007GC001935) Diehl, T. M., J. W. Holt, D. D. Blankenship, D. A. Young, T. A. Jordan, and F. Ferraccioli (2008), First airborne gravity results over the Thwaites Glacier catchment, West Antarctica, Geochemistry, Geophysics, Geosystems, 8(Q04011), . (doi:10.1029/2007GC001878) Diehl, T. M., J. W. Holt, D. D. Blankenship, D. A. Young, T. A. Jordan, and F. Ferraccioli (2008), Antarctic airborne gravity data: Free-Air Gravity Anomalies Over the Thwaites Glacier Catchment, West Antarctica. Boulder, Colorado USA: National Geophysical Data Center, Digital media. http://www.ngdc.noaa.gov/mgg/gravity/utig_agasea.html Keywords AGASEA Airborne Altimetry Antarctica Elevation Glaciers/ice Sheet Glaciology Thwaites Glacier