Parallel numerical modelling of ice flow in Antarctica


Takeda, A.L., Cox, S.J. and Payne, A.J. (2000) Parallel numerical modelling of ice flow in Antarctica. In, Arabnia, Hamid R. (ed.) Proceedings of the International Conference on Parallel and Distributed Processing Techniques and Applications (PDPTA 2000). International Conference on Parallel and Distributed Processing Techniques and Applications (PDPTA 2000) USA, CSREA Press, 335-341.

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Description/Abstract

The Antarctic Ice Sheet is made up of the West Antarctic Ice Sheet (WAIS) and the much larger East Antarctic Ice Sheet (EAIS). Previous numerical models have focussed on ice flow in WAIS, since the size of the EAIS has precluded studies at a resolution adequate to identify complex flow features. The equations describing ice flow are highly non-linear, making this a computationally intensive problem. We use a staggered grid to overcome numerical instability and a sparse packing scheme to take account of the irregular boundary of Antarctica. We have developed a highly efficient parallel thermally-coupled ice flow model of the entire Antarctic Ice Sheet at a resolution of 20km and present performance results obtained on a commodity cluster of workstations. Our initial results show areas of East Antarctica at pressure melting point that may be characterised by fast ice flow.

Item Type: Book Section
ISBNs: 1892512521 (hardback)
Keywords: Antarctica, parallel computing, non-linear partial differential equations, commodity supercomputing
Subjects: G Geography. Anthropology. Recreation > G Geography (General)
Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences
ePrint ID: 21956
Date Deposited: 27 Feb 2007
Last Modified: 27 Mar 2014 18:11
Publisher: CSREA Press
URI: http://eprints.soton.ac.uk/id/eprint/21956

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