A finite-element treatment of sea ice dynamics for different ice rheologies
In this paper the effects of four different rheologies on the evolution of a large-scale sea ice pack are determined and compared. Two rheologies are of viscous-plastic form, and two are viscous fluid relations. The initial pack domain is rectangular, and the motion is driven by wind stress and resi...
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ftuniveastangl:oai:ueaeprints.uea.ac.uk:80418 2023-05-15T16:39:31+02:00 A finite-element treatment of sea ice dynamics for different ice rheologies Schulkes, R. M.S.M. Morland, L. W. Staroszczyk, R. 1998 https://ueaeprints.uea.ac.uk/id/eprint/80418/ https://doi.org/10.1002/(SICI)1096-9853(199803)22:3<153::AID-NAG912>3.0.CO;2-E unknown Schulkes, R. M.S.M., Morland, L. W. and Staroszczyk, R. (1998) A finite-element treatment of sea ice dynamics for different ice rheologies. International Journal for Numerical and Analytical Methods in Geomechanics, 22 (3). pp. 153-174. ISSN 0363-9061 doi:10.1002/(SICI)1096-9853(199803)22:3<153::AID-NAG912>3.0.CO;2-E Article PeerReviewed 1998 ftuniveastangl https://doi.org/10.1002/(SICI)1096-9853(199803)22:3<153::AID-NAG912>3.0.CO;2-E 2023-01-30T21:55:13Z In this paper the effects of four different rheologies on the evolution of a large-scale sea ice pack are determined and compared. Two rheologies are of viscous-plastic form, and two are viscous fluid relations. The initial pack domain is rectangular, and the motion is driven by wind stress and resisted by ocean drag. Two adjacent edges are rigid shore boundaries, and the other two are free boundaries at open water which move during the pack motion, so that the pack domain changes in time. Two different forms of boundary conditions at the rigid shore edges are considered, which also influence the evolution. The governing equations are solved numerically using a finite-element method, and, unlike previous numerical treatments, no artificial viscosity is incorporated to stabilise the algorithm near interfaces between converging and diverging flow. Instability arises when any tensile stress is abruptly cut-off when diverging flow is initiated, and an alternative view is offered. Article in Journal/Newspaper ice pack Sea ice University of East Anglia: UEA Digital Repository |
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University of East Anglia: UEA Digital Repository |
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ftuniveastangl |
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description |
In this paper the effects of four different rheologies on the evolution of a large-scale sea ice pack are determined and compared. Two rheologies are of viscous-plastic form, and two are viscous fluid relations. The initial pack domain is rectangular, and the motion is driven by wind stress and resisted by ocean drag. Two adjacent edges are rigid shore boundaries, and the other two are free boundaries at open water which move during the pack motion, so that the pack domain changes in time. Two different forms of boundary conditions at the rigid shore edges are considered, which also influence the evolution. The governing equations are solved numerically using a finite-element method, and, unlike previous numerical treatments, no artificial viscosity is incorporated to stabilise the algorithm near interfaces between converging and diverging flow. Instability arises when any tensile stress is abruptly cut-off when diverging flow is initiated, and an alternative view is offered. |
format |
Article in Journal/Newspaper |
author |
Schulkes, R. M.S.M. Morland, L. W. Staroszczyk, R. |
spellingShingle |
Schulkes, R. M.S.M. Morland, L. W. Staroszczyk, R. A finite-element treatment of sea ice dynamics for different ice rheologies |
author_facet |
Schulkes, R. M.S.M. Morland, L. W. Staroszczyk, R. |
author_sort |
Schulkes, R. M.S.M. |
title |
A finite-element treatment of sea ice dynamics for different ice rheologies |
title_short |
A finite-element treatment of sea ice dynamics for different ice rheologies |
title_full |
A finite-element treatment of sea ice dynamics for different ice rheologies |
title_fullStr |
A finite-element treatment of sea ice dynamics for different ice rheologies |
title_full_unstemmed |
A finite-element treatment of sea ice dynamics for different ice rheologies |
title_sort |
finite-element treatment of sea ice dynamics for different ice rheologies |
publishDate |
1998 |
url |
https://ueaeprints.uea.ac.uk/id/eprint/80418/ https://doi.org/10.1002/(SICI)1096-9853(199803)22:3<153::AID-NAG912>3.0.CO;2-E |
genre |
ice pack Sea ice |
genre_facet |
ice pack Sea ice |
op_relation |
Schulkes, R. M.S.M., Morland, L. W. and Staroszczyk, R. (1998) A finite-element treatment of sea ice dynamics for different ice rheologies. International Journal for Numerical and Analytical Methods in Geomechanics, 22 (3). pp. 153-174. ISSN 0363-9061 doi:10.1002/(SICI)1096-9853(199803)22:3<153::AID-NAG912>3.0.CO;2-E |
op_doi |
https://doi.org/10.1002/(SICI)1096-9853(199803)22:3<153::AID-NAG912>3.0.CO;2-E |
_version_ |
1766029862355599360 |