The University of Southampton
University of Southampton Institutional Repository

Parallel numerical modelling of the Antartic Ice Sheet

Takeda, Andrea, Cox, Simon and Payne, Antony J. (2002) Parallel numerical modelling of the Antartic Ice Sheet Computers & Geosciences, 28, (6), pp. 723-734. (doi:10.1016/S0098-3004(01)00106-6).

Record type: Article

Abstract

The Antarctic Ice Sheet comprises the West Antarctic Ice Sheet and the much larger East Antarctic Ice Sheet. Fast flowing ice streams and outlet glaciers are important dynamic components of the ice sheet system, and a grid resolution of at least 20 km is required to identify many of these areas. Previous fine resolution numerical models have focussed on ice flow in West Antarctica or on fine resolution modelling of subsections of the ice sheet, since the size of East Antarctica has generally precluded studies of the whole ice sheet 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 for calculation of ice diffusivity to overcome numerical instability, and a sparse packing scheme to take account of the irregular boundary of Antarctica. We have developed an efficient parallel temperature-dependent ice flow model of the entire grounded portion of the Antarctic Ice Sheet at a resolution of 20 km. The model was primarily written to run on a commodity cluster of workstations, and performance results for this and other systems are presented. Ice flow patterns at steady state compare well with recently published balance velocity calculations.

PDF take_02.pdf - Accepted Manuscript
Download (2MB)

More information

Published date: 2002
Keywords: antarctica, parallel computing, non-linear partial differential equations, commodity supercomputing, bedmap data

Identifiers

Local EPrints ID: 21950
URI: http://eprints.soton.ac.uk/id/eprint/21950
ISSN: 0098-3004
PURE UUID: f25f27ca-92d9-4da8-af61-536162b9654f

Catalogue record

Date deposited: 10 Mar 2006
Last modified: 17 Jul 2017 16:24

Export record

Altmetrics

Contributors

Author: Andrea Takeda
Author: Simon Cox
Author: Antony J. Payne

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×