Investigations of an "ice plain" in the mouth of Pine Island Glacier, Antarctica

Authors: Corr, H. F. J.; Doake, C. S. M.; Jenkins, A.; Vaughan, D. G.

Source: Journal of Glaciology, Volume 47, Number 156, January 2001 , pp. 51-57(7)

Publisher: International Glaciological Society

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Abstract:

We present newly acquired airborne radar data showing ice thickness and surface elevation for Pine Island Glacier, Antarctica. These data, when combined with earlier measurements, suggest the presence of a lightly grounded area immediately above the grounding line of Pine Island Glacier. We identify this region as a "ice plain". It lies close to the centre line of the glacier, has an elevation above buoyancy of <50 m and extends inland for >28 km. The upstream edge of the ice plain is defined by a "coupling line". The configuration of the ice plain implies that nearby thinning of the ice stream would result in substantial grounding-line retreat. We suggest that the grounding-line retreat of Pine Island Glacier, observed between 1992 and 1996, probably commenced sometime after 1981.

Document Type: Research Article

DOI: http://dx.doi.org/10.3189/172756501781832395

Publication date: January 1, 2001

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  • The Journal of Glaciology is published six times per year. It accepts submissions from any discipline related to the study of snow and ice. All articles are peer reviewed. The Journal is included in the ISI Science Citation Index.
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