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Influence of subglacial geology on the position of a West Antarctic ice stream from seismic observations.

Author(s) : ANANDAKRISHNAN S., BLANKENSHIP D. D., ALLEY R. B., STOFFA P. L.

Type of article: Article

Summary

The authors use seismic obervations to provide evidence that one margin of the upglacier part of an ice stream is directly above the boundary basin with sedimentary fill. The ice stream is within the basin and the ice outside the basin is slow-flowing. The basin fill presents an order-of-magnitude lower frictional resistance to ice flow than the subglacial material outside the basin. The authors conclude that the ice stream position is dependent on subglacial geology. (See also IIR Bulletin, ref. 99-1943.)

Details

  • Original title: Influence of subglacial geology on the position of a West Antarctic ice stream from seismic observations.
  • Record ID : 1999-1944
  • Languages: English
  • Subject: Environment, General information
  • Source: Nature - vol. 394 - n. 6688
  • Publication date: 1998/07/02
  • Document available for consultation in the library of the IIR headquarters only.

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