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Recent dramatic thinning of largest West-Antarctic ice stream triggered by oceans.

Payne, A. J. and Vieli, A. and Shepherd, A. P. and Wingham, D. J. and Rignot, E. (2004) 'Recent dramatic thinning of largest West-Antarctic ice stream triggered by oceans.', Geophysical research letters., 31 . L23401.

Abstract

A growing body of observational data suggests that Pine Island Glacier (PIG) is changing on decadal or shorter timescales. These changes may have far-reaching consequences for the future of the West Antarctic ice sheet (WAIS) and global sea levels because of PIG's role as the ice sheet's primary drainage portal. We test the hypothesis that these changes are triggered by the adjoining ocean. Specifically, we employ an advanced numerical ice-flow model to simulate the effects of perturbations at the grounding line on PIG's dynamics. The speed at which these changes are propagated upstream implies a tight coupling between ice-sheet interior and surrounding ocean.

Item Type:Article
Keywords:Hydrology, Glaciology, Mathematical Geophysics, Modeling, Information Related to Geographic Region, Antarctica.
Full text:PDF - Published Version (227Kb)
Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1029/2004GL021284
Publisher statement:© 2004 American Geophysical Union. Payne, A. J. and Vieli, A. and Shepherd, A. P. and Wingham, D. J. and Rignot, E., (2004), 'Recent dramatic thinning of largest West-Antarctic ice stream triggered by oceans.', Geophysical research letters., 31., L23401., 10.1029/2004GL021284 (DOI). To view the published open abstract, go to http://dx.doi.org and enter the DOI.
Record Created:06 Oct 2008
Last Modified:03 Aug 2011 16:22

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