[Parameters: Topic='SPECTRAL/ENGINEERING', Term='RADAR', Variable_Level_1='RADAR IMAGERY']
Radar Investigations of Antarctic Ice Stream Margins, Siple Dome, 1998Entry ID: NSIDC-0303
Abstract: This data set consists of surface-based radar measurements, including geometry of the bed, surface, and internal layers, and bed reflectivity measurements at two sites along ice stream margins at Siple Dome, Antarctica. The research is a radar examination of bed reflection characteristics and internal layer geometry in two inter-ice-stream ridges, the Shabtaie Ridge (Ridge D/E) and the Engelhardt ... Ridge (Ridge B/C), and across margins with the adjacent ice streams, the MacAyeal Ice Stream (Ice Stream E) and the Whillans Ice Stream (Ice Stream B). Investigators collected these radar data from 14 November through 13 December 1998. Data are in Microsoft Word, PDF, ASCII text, MATLAB, binary, and various image formats. Investigators have also provided code for MATLAB routines that they used to view the radar data. Data are available via FTP.
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Data Set Citation
Dataset Originator/Creator: Nadine A. Nereson
Dataset Title: Radar Investigations of Antarctic Ice Stream Margins, Siple Dome, 1998
Dataset Release Date: 2007-07-06
Dataset Release Place: Boulder, Colorado USA
Dataset Publisher: National Snow and Ice Data Center (NSIDC)
Data Presentation Form: Digital MediaOnline Resource: http://nsidc.org/data/nsidc-0303.html
Start Date: 1998-11-14Stop Date: 1998-12-13
ISO Topic Category
Quality Because the airwave signal swamps the first 1 µs of the data record, the first step in data processing is to remove the mean waveform from the profile to remove the airwave effect and reveal shallow layer information in the first 1 µs. Since the GPS data have not been fully processed, absolute error in vertical elevation could be as large as 50 m, so the displayed elevation scales for the radar profiles should be considered approximate. The profiles displayed in images are based on data files that have been subjected to demeaning and filtering and would therefore not be appropriate for any analyses directed toward accurate assessment of amplitude and phase without careful consideration.
Data Set Progress
Distribution Format: ASCII text
Distribution Format: Island Draw
Distribution Format: MATLAB
Distribution Format: Microsoft Word
Distribution Format: PDF
Distribution Format: Paint Shop
Distribution Format: PostScript
Distribution Format: binary
Distribution Media: FTP
Distribution Size: 519 MB
Phone: (206) 543-0162
Email: nadine at geophys.washington.edu
Box 35130 University of Washington
Province or State: WA
Postal Code: 98195-1310
Phone: (206) 543-4914
Email: charlie at ess.washington.edu
University of Washington Department of Earth and Space Sciences Box 351310
Province or State: WA
Postal Code: 98105
Role: TECHNICAL CONTACT
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at nsidc.org
National Snow and Ice Data Center CIRES, 449 UCB University of Colorado
Province or State: CO
Postal Code: 80309-0449
Fisher, A. M., R. W. Jacobel, N. M. Sundell, and A. M. Gades 1995. Bedrock topography and internal stratigraphy of the Siple Dome summit. EOS, Transactions 76, F194.
Gades, A. M., C. F. Raymond, H. Conway, and R. W. Jacobel. 2000. Bed properties of Siple Dome and adjacent ice streams, West Antarctica, inferred from radio echo-sounding measurements. Journal of Glaciology 46, 88-94.
Jacobel, ... R., T. Scambos, C. Raymond, and A. Gades. 1996. Changes in the configuration of Ice Stream flow from the West Antarctic Ice Sheet. Journal of Geophysical Research 101, 5499-5504.
Jacobel, R. W., T. A. Scambos, N. A. Nereson, and C. Raymond. 2000. Changes in the margin of Ice Stream C, Antarctica. Journal of Glaciology 46, 102-110.
Jacobson, H. P., and C. F. Raymond. 1998. Thermal effects on the location of ice stream margins. Journal of Geophysical Research 103, 12,111-12,122.
Nereson, N. A. 2000. Elevation of ice stream margin scars after stagnation. Journal of Glaciology 46, 111-118.
Nereson, N. A., and C. F. Raymond 1995. The geometry and stratigraphy of Siple Dome and implications for its history. EOS, Transactions 76.
Nereson, N. A., C. F. Raymond, R. W. Jacobel, and E. D. Waddington. 1997. The history of the spatial accumulation pattern at Siple Dome, West Antarctica, from radar measurements. EOS Transactions, 1997 Fall Meeting Supplement 78, F252.
Nereson, N. A., C. F. Raymond, E. D. Waddington, and R. W. Jacobel. 1998. Migration of the Siple Dome ice divide, West Antarctica. Journal of Glaciology 44 , 643-652.
Raymond, C., N. Nereson, A. Gades, H. Conway, R. Jacobel, and T. Scambos. 1995. Geometry and stratigraphy of Siple Dome, Antarctica. Antarctic Journal of the United States, 1995 Review 30, 91-93.
Scambos, T., and N. Nereson. 1995. Satellite image and GPS study of the morphology of Siple Dome, Antarctica. Antarctic Journal of the United States, 1995 Review 30, 87-89.
Creation and Review Dates
DIF Creation Date: 2007-07-06
Last DIF Revision Date: 2012-05-14