AGASEA Ice Thickness Profile Data from the Amundsen Sea Embayment, Antarctica

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Entry ID

NSIDC-0517

Summary

This data set contains line-based radar-derived ice thickness and bed elevation data, collected as part of the Airborne Geophysical Survey of the Amundsen Embayment (AGASEA) expedition, which took place over Thwaites Glacier in West Antarctica from 2004 to 2005. The data set includes ice thickness, ice sheet bed elevation, and ice sheet surface elevation, derived from ice-penetrating radar and aircraft GPS positions. The data are spaced on a 15 km by 15 km grid over the entire catchment of the glacier, and sampled at approximately 15 meters along track. Most of the radar data used for this dataset has been processed using a 1-D focusing algorithm, to reduce the along track resolution to tens of meters, to improve boundary conditions for ice sheet models.

Data are available via FTP in space-delimited ASCII format.

Geographic Coverage

 

Spatial Coordinates:
N: -73°     S: -83°     E: -90°     W: -125°    

Data Set Citation

Dataset Creator: Blankenship, D. D., D. A. Young, J. W. Holt, and S. D. Kempf.
Dataset Title: AGASEA Ice Thickness Profile Data from the Amundsen Sea Embayment, Antarctica
Dataset Release Date: 2012-05-03
Dataset Release Place: Boulder, Colorado USA
Dataset Publisher: NSIDC: National Snow and Ice Data Center
Online Resource: http://nsidc.org/data/nsidc-0517.html
Dataset DOI: http://dx.doi.org/10.7265/N5W95730

Temporal Coverage

Start Date: 2004-12-10
Stop Date: 2005-01-29

Location Keywords

  • CONTINENT ANTARCTICA
  • GEOGRAPHIC REGION POLAR

Science Keywords

  • Cryosphere Glaciers/Ice Sheets Glacier Elevation/Ice Sheet Elevation
  • Cryosphere Glaciers/Ice Sheets Glacier Topography/Ice Sheet Topography
  • Cryosphere Glaciers/Ice Sheets Ice Sheets

Ancillary Keywords

  • Airborne geophysical survey of the Amundsen Sea Embayment, Antarctica (AGASEA)
  • Airborne Radar Sounding
  • Antarctic Ice Sheet
  • Glacier
  • glaciers
  • GPS
  • Ice Penetrating Radar
  • Ice Sheet
  • Ice Sheet Thickness
  • Model Input Data
  • Thwaites Glacier

ISO Topic Category (View Definitions)

  • Climatology/Meteorology/Atmosphere

Platform

  • AIRCRAFT
  • DHC-6 DeHavilland Twin Otter

Instrument

  • GPS Global Positioning System
  • MAGNETOMETERS
  • RADAR Radio Detection and Ranging

Originating Center

UTX-AUSTIN/IG

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

Antarctic Glaciological Data Center
Data Center URL: http://nsidc.org/agdc/

Data Center Personnel

Name: AGDC User Services
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

Distribution

Distribution Media: FTP
Distribution Size: 71 MB
Distribution Format: ASCII Text (.txt)

Personnel

Donald D. Blankenship
Role: INVESTIGATOR
Email: blank@ig.utexas.edu
Contact Address:

  • University of Texas at Austin
  • Institute for Geophysics
  • 4412 Spicewood Springs Rd. #600

City: Austin
Province or State: TX
Postal Code: 78759-8500
Country: USA

Duncan A. Young
Role: INVESTIGATOR
Contact Address:

  • University of Texas at Austin
  • Jackson School of Geosciences, Institute for Geophysics
  • J.J. Pickle Research Campus
  • Bldg. 196
  • 10100 Burnet Road (R2200)
  • Austin, TX 78758-4445

City: Austin
Province or State: Texas
Postal Code: 78758-4445
Country: USA

John W. Holt
Role: INVESTIGATOR
Contact Address:

  • University of Texas at Austin
  • Institute for Geophysics
  • 4412 Spicewood Springs Rd. #600

City: Austin
Province or State: TX
Postal Code: 78759-850
Country: USA

Scott D. Kempf
Role: INVESTIGATOR
Contact Address:

  • University of Texas at Austin
  • Institute for Geophysics
  • Jackson School of Geosciences,
  • J.J. Pickle Research Campus Bldg. 196
  • 10100 Burnet Road (R2200)

City: Austin
Province or State: Texas
Postal Code: 78758-4445
Country: USA

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 PROJECT HOME PAGE
AGASEA Web Page

Reference

Holt, J. W., D. D. Blankenship, D. L. Morse, D. A. Young, M. E. Peters, S. D. Kempf, T. G. Richter, D. G. Vaughan, and H. Corr. 2006. New Boundary Conditions for the West Antarctic Ice Sheet: Subglacial Topography of the Thwaites and Smith Glacier Catchments, Geophysical Research Letters, 33(L09502), 10.1029/2005GL025561.

Peters, M. E., D. D. Blankenship, S. P. Carter, D. A. Young, S. D. Kempf, and J. W. Holt. 2007. Along-Track Focusing of Airborne Radar Sounding Data from West Antarctica for Improving Basal Reflection Analysis and Layer Detection, IEEE Transactions on Geoscience and Remote Sensing, 45(9), 2725-2736, 10.1109/TGRS.2007.897416.

Peters, M. E., D. D. Blankenship, and D. L. Morse. 2005. Analysis Techniques for Coherent Airborne Radar Sounding: Application to West Antarctic Ice Streams, Journal of Geophysical Research, 110(B06303), 10.1029/2004JB003222.

Metadata Name and Version

Metadata Name: CEOS IDN DIF
Metadata Version: 9.7

Creation and Review Dates

DIF Creation Date: 2012-05-03
Last DIF Revision Date: 2014-04-28

Metadata Views

DIF Text-Only

Directory Interchange Format (DIF) in plain text

DIF XML

Directory Interchange Format (DIF) in Extensible Markup Language (XML)

FGDC HTML

U.S. Federal Geographic Data Committee (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM)

ISO HTML

International Organization for Standardization (ISO) 19115:2003 Geographic Information Metadata

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