Radar Investigations of Antarctic Ice Stream Margins, Siple Dome, 1998  View Catalog Page Entry ID
NSIDC-0303
Summary
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.
Geographic Coverage
Spatial Coordinates:
N: -80.1678°
S: -83.3528°
E: -138.3697°
W: -141.6722°
Min Altitude: 322.703 meters
Max Altitude: 560.816 meters
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Data Set Citation
Dataset 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: NSIDC: National Snow and Ice Data Center
Online Resource: http://nsidc.org/data/nsidc-0303.html
Dataset DOI: http://dx.doi.org/10.7265/N52B8VZP
Temporal Coverage
Start Date: 1998-11-14
Stop Date: 1998-12-13
Location Keywords
- CONTINENT ANTARCTICA SIPLE DOME
Science Keywords
- Spectral/Engineering Radar Radar Imagery Bed, Surface, and Internal Layer Geometry
- Spectral/Engineering Radar Radar Reflectivity Bed Reflectivity
Ancillary Keywords
- Antarctica
- Bed Geometry
- Bed Reflectivity
- Engelhardt Ridge
- GPR
- GPS
- Ice Stream
- Ice Stream Margins
- Internal Layer Geometry
- internal layering
- MacAyeal Ice Stream
- Radar
- Shabtaie Ridge
- Siple Dome
- Surface Geometry
- Whillans Ice Stream
- Climatology/Meteorology/Atmosphere
Platform
- GPS Global Positioning System Satellites
- GROUND-BASED OBSERVATIONS
Instrument
- GPR Ground Penetrating Radar
- GPS RECEIVERS
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
complete
Originating Center
NSIDC_AGDC
Data Center
National Snow and Ice Data Center
Data Center URL: http://nsidc.org
Data Center Personnel
Name: NSIDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:
- National Snow and Ice Data Center
- CIRES, 449 UCB
- University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA
NSIDC Antarctic Glaciological Data Center
Data Center URL: http://nsidc.org/agdc/
Data Center Personnel
Name: NSIDC AGDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:
- National Snow and Ice Data Center
- CIRES, 449 UCB
- University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA
NSIDC U.S. Antarctic Data Coordination Center
Data Center URL: http://nsidc.org/usadcc/
Data Center Personnel
Name: NSIDC USADCC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:
- National Snow and Ice Data Center
- CIRES, 449 UCB
- University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA
Distribution
Distribution Format: ASCII Text
Distribution Format: MATLAB
Distribution Format: Microsoft Word
Distribution Format: PDF
Distribution Format: Binary
Distribution Media: FTP
Distribution Size: 519 MB
Personnel
Nadine A. Nereson
Role: INVESTIGATOR
Phone: 1 206 543-0162
Email: nadine@geophys.washington.edu
Contact Address:
- University of Washington
- Department of Earth and Space Sciences
- Box 35130
- University of Washington
City: Seattle
Province or State: WA
Postal Code: 98195-1310
Country: USA
Charles Raymond
Role: INVESTIGATOR
Contact Address:
- University of Washington
- University of Washington
- Geophysics Program Box 351650
City: Seattle
Province or State: WA
Postal Code: 98195
NSIDC User Services
Role: TECHNICAL CONTACT
Phone: 1 303 492-6199 x
Fax: 1 303 492-2468 x
Email: nsidc@nsidc.org
Contact Address:
- National Snow and Ice Data Center
- CIRES, 449 UCB
- University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA
Related URL
VIEW RELATED INFORMATION
Compilation of Antarctic Radar Data, Siple Coast, 2000-2002
VIEW RELATED INFORMATION
GPR and GPS Data: Characteristics of Snow Megadunes and their Potential Effects on Ice Core Interpretation
VIEW RELATED INFORMATION
Ice Motion and Topography Near Margin Areas of Kamb Ice Stream, Antarctica
VIEW RELATED INFORMATION
Ice Thickness and Internal Layer Depth Along the 2001 and 2002 US ITASE Traverses
VIEW RELATED INFORMATION
Siple Dome Glaciology and Ice Stream History 1994, 1996
VIEW RELATED INFORMATION
US International Trans-Antarctic Scientific Expedition (US ITASE): GPR Profiles and Accumulation Mapping
Reference
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.
Metadata Name and Version
Metadata Name: CEOS IDN DIF
Metadata Version: 9.7
Creation and Review Dates
DIF Creation Date: 2007-07-06
Last DIF Revision Date: 2013-03-18
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