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Parallel numerical modelling of ice flow in Antarctica

Parallel numerical modelling of ice flow in Antarctica
Parallel numerical modelling of ice flow in Antarctica
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.
Antarctica, parallel computing, non-linear partial differential equations, commodity supercomputing
1-892512-52-1
335-341
CSREA Press
Takeda, A.L.
695119fc-0471-417f-9364-6542ef35cd86
Cox, S.J.
0e62aaed-24ad-4a74-b996-f606e40e5c55
Payne, A.J.
ce816e45-23ce-4805-a987-ab26e17b3bab
Arabnia, Hamid R.
Takeda, A.L.
695119fc-0471-417f-9364-6542ef35cd86
Cox, S.J.
0e62aaed-24ad-4a74-b996-f606e40e5c55
Payne, A.J.
ce816e45-23ce-4805-a987-ab26e17b3bab
Arabnia, Hamid R.

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

Record type: Conference or Workshop Item (Paper)

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.

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More information

Published date: June 2000
Additional Information: Organisation: CSREA
Venue - Dates: International Conference on Parallel and Distributed Processing Techniques and Applications (PDPTA 2000), Las Vegas, USA, 2000-06-24 - 2000-06-26
Keywords: Antarctica, parallel computing, non-linear partial differential equations, commodity supercomputing
Organisations: Electronics & Computer Science

Identifiers

Local EPrints ID: 254256
URI: http://eprints.soton.ac.uk/id/eprint/254256
ISBN: 1-892512-52-1
PURE UUID: 9644b33e-c25b-4f8d-8e47-697fc7841c11

Catalogue record

Date deposited: 31 Jan 2001
Last modified: 16 Mar 2024 04:20

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Contributors

Author: A.L. Takeda
Author: S.J. Cox
Author: A.J. Payne
Editor: Hamid R. Arabnia

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