Dependence of sea ice yield-curve shape on ice thickness
In this note, the authors discuss the contribution that frictional sliding of ice floes (or floe aggregates) past each other and pressure ridging make to the plastic yield curve of sea ice. Using results from a previous study that explicitly modeled the amount of sliding and ridging that occurs for...
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American Meteorological Society
2004
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Online Access: | https://centaur.reading.ac.uk/35288/ https://centaur.reading.ac.uk/35288/1/Dependence%20of%20sea.pdf https://doi.org/10.1175/JPO2667.1 |
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ftunivreading:oai:centaur.reading.ac.uk:35288 2024-06-23T07:56:41+00:00 Dependence of sea ice yield-curve shape on ice thickness Wilchinsky, Alexander V. Feltham, D. L. 2004 text https://centaur.reading.ac.uk/35288/ https://centaur.reading.ac.uk/35288/1/Dependence%20of%20sea.pdf https://doi.org/10.1175/JPO2667.1 en eng American Meteorological Society https://centaur.reading.ac.uk/35288/1/Dependence%20of%20sea.pdf Wilchinsky, A. V. and Feltham, D. L. <https://centaur.reading.ac.uk/view/creators/90004991.html> orcid:0000-0003-2289-014X (2004) Dependence of sea ice yield-curve shape on ice thickness. Journal of Physical Oceanography, 34 (12). pp. 2852-2856. ISSN 0022-3670 doi: https://doi.org/10.1175/JPO2667.1 <https://doi.org/10.1175/JPO2667.1> Article PeerReviewed 2004 ftunivreading https://doi.org/10.1175/JPO2667.1 2024-06-11T15:01:09Z In this note, the authors discuss the contribution that frictional sliding of ice floes (or floe aggregates) past each other and pressure ridging make to the plastic yield curve of sea ice. Using results from a previous study that explicitly modeled the amount of sliding and ridging that occurs for a given global strain rate, it is noted that the relative contribution of sliding and ridging to ice stress depends upon ice thickness. The implication is that the shape and size of the plastic yield curve is dependent upon ice thickness. The yield-curve shape dependence is in addition to plastic hardening/weakening that relates the size of the yield curve to ice thickness. In most sea ice dynamics models the yield-curve shape is taken to be independent of ice thickness. The authors show that the change of the yield curve due to a change in the ice thickness can be taken into account by a weighted sum of two thickness-independent rheologies describing ridging and sliding effects separately. It would be straightforward to implement the thickness-dependent yield-curve shape described here into sea ice models used for global or regional ice prediction. Article in Journal/Newspaper Sea ice CentAUR: Central Archive at the University of Reading Journal of Physical Oceanography 34 12 2852 2856 |
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CentAUR: Central Archive at the University of Reading |
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ftunivreading |
language |
English |
description |
In this note, the authors discuss the contribution that frictional sliding of ice floes (or floe aggregates) past each other and pressure ridging make to the plastic yield curve of sea ice. Using results from a previous study that explicitly modeled the amount of sliding and ridging that occurs for a given global strain rate, it is noted that the relative contribution of sliding and ridging to ice stress depends upon ice thickness. The implication is that the shape and size of the plastic yield curve is dependent upon ice thickness. The yield-curve shape dependence is in addition to plastic hardening/weakening that relates the size of the yield curve to ice thickness. In most sea ice dynamics models the yield-curve shape is taken to be independent of ice thickness. The authors show that the change of the yield curve due to a change in the ice thickness can be taken into account by a weighted sum of two thickness-independent rheologies describing ridging and sliding effects separately. It would be straightforward to implement the thickness-dependent yield-curve shape described here into sea ice models used for global or regional ice prediction. |
format |
Article in Journal/Newspaper |
author |
Wilchinsky, Alexander V. Feltham, D. L. |
spellingShingle |
Wilchinsky, Alexander V. Feltham, D. L. Dependence of sea ice yield-curve shape on ice thickness |
author_facet |
Wilchinsky, Alexander V. Feltham, D. L. |
author_sort |
Wilchinsky, Alexander V. |
title |
Dependence of sea ice yield-curve shape on ice thickness |
title_short |
Dependence of sea ice yield-curve shape on ice thickness |
title_full |
Dependence of sea ice yield-curve shape on ice thickness |
title_fullStr |
Dependence of sea ice yield-curve shape on ice thickness |
title_full_unstemmed |
Dependence of sea ice yield-curve shape on ice thickness |
title_sort |
dependence of sea ice yield-curve shape on ice thickness |
publisher |
American Meteorological Society |
publishDate |
2004 |
url |
https://centaur.reading.ac.uk/35288/ https://centaur.reading.ac.uk/35288/1/Dependence%20of%20sea.pdf https://doi.org/10.1175/JPO2667.1 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_relation |
https://centaur.reading.ac.uk/35288/1/Dependence%20of%20sea.pdf Wilchinsky, A. V. and Feltham, D. L. <https://centaur.reading.ac.uk/view/creators/90004991.html> orcid:0000-0003-2289-014X (2004) Dependence of sea ice yield-curve shape on ice thickness. Journal of Physical Oceanography, 34 (12). pp. 2852-2856. ISSN 0022-3670 doi: https://doi.org/10.1175/JPO2667.1 <https://doi.org/10.1175/JPO2667.1> |
op_doi |
https://doi.org/10.1175/JPO2667.1 |
container_title |
Journal of Physical Oceanography |
container_volume |
34 |
container_issue |
12 |
container_start_page |
2852 |
op_container_end_page |
2856 |
_version_ |
1802649972165836800 |