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
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
Publication date: January 1, 2001
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