These data files consist of three columns: lonigute, latitude and value.
Elevations are in meters referenced to WGS-84. Ice thickness is in meters. The values form a filled orthigonal grid at 425 meter resolution(for thk and srf, 850 km for grv and mag).

Web page gridded images: The values listed above form a filled orthogonal grid at 850 meter resolution. Grids are smoothed using a Gaussian filter (2.125 km for thk and srf and 4.25 km for grv and mag) and surfaced using a bicubic spline method.


Acknowledgment:

In keeping with NSF Grant Policy, any publication using these data (including web documents) must contain the following acknowedgment: "This material is based on work supported by the National Science Foundation under Grants: OPP-9120464, 9319369 and 9319379." Also, any oral presentation utilizing these materials should acknowedge the suport of the National Science Foundation. In addition, we request that any oral presentation, web page or publication also acknowedge SOAR and the University of Texas. Suitable citation for IRE data is

These data are described in:

Blankenship, D. D., D. L. 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 Alley, R. B. and R. A. Bindschadler eds., The West Antarctic Ice Sheet: Behavior and Environment, American Geophysical Union, p. 105 - 121.

The BSB data in the vicinity of the Ross Sea/Amundsen Sea ice divide were described in

Morse, D. L., D. D. Blankenship, E. D. Waddington and T. A. Neumann. 2002. A site for deep ice coring in West Antarctica: Results from aerogeophysical surveys and thermo-kinematic modeling. Annals of Glaciology, 35, p. 36-44.

A description for the Ice Stream D data is in progress, please contacts the CASERTZ P.I. for up-to-date citation information.