The Effects of Ice Floe‐Floe Interactions on Pressure Ridging in Sea Ice
Abstract The mechanical interactions between ice floes in the polar sea‐ice packs play an important role in the state and predictability of the sea‐ice cover. We use a Lagrangian‐based numerical model to investigate such floe‐floe interactions. Our simulations show that elastic and reversible deform...
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American Geophysical Union (AGU)
2021
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Online Access: | https://doi.org/10.1029/2020MS002336 https://doaj.org/article/957fe2baa0984080b026b0819356520a |
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ftdoajarticles:oai:doaj.org/article:957fe2baa0984080b026b0819356520a 2023-05-15T18:16:09+02:00 The Effects of Ice Floe‐Floe Interactions on Pressure Ridging in Sea Ice A. Damsgaard O. Sergienko A. Adcroft 2021-07-01T00:00:00Z https://doi.org/10.1029/2020MS002336 https://doaj.org/article/957fe2baa0984080b026b0819356520a EN eng American Geophysical Union (AGU) https://doi.org/10.1029/2020MS002336 https://doaj.org/toc/1942-2466 1942-2466 doi:10.1029/2020MS002336 https://doaj.org/article/957fe2baa0984080b026b0819356520a Journal of Advances in Modeling Earth Systems, Vol 13, Iss 7, Pp n/a-n/a (2021) discrete element method numerical modeling rafting ridging sea ice Physical geography GB3-5030 Oceanography GC1-1581 article 2021 ftdoajarticles https://doi.org/10.1029/2020MS002336 2022-12-31T06:48:40Z Abstract The mechanical interactions between ice floes in the polar sea‐ice packs play an important role in the state and predictability of the sea‐ice cover. We use a Lagrangian‐based numerical model to investigate such floe‐floe interactions. Our simulations show that elastic and reversible deformation offers significant resistance to compression before ice floes yield with brittle failure. Compressional strength dramatically decreases once pressure ridges start to form, which implies that thicker sea ice is not necessarily stronger than thinner ice. The mechanical transition is not accounted for in most current sea‐ice models that describe ice strength by thickness alone. We propose a parameterization that describes failure mechanics from fracture toughness and Coulomb sliding, improving the representation of ridge building dynamics in particle‐based and continuum sea‐ice models. Article in Journal/Newspaper Sea ice Directory of Open Access Journals: DOAJ Articles Journal of Advances in Modeling Earth Systems 13 7 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
discrete element method numerical modeling rafting ridging sea ice Physical geography GB3-5030 Oceanography GC1-1581 |
spellingShingle |
discrete element method numerical modeling rafting ridging sea ice Physical geography GB3-5030 Oceanography GC1-1581 A. Damsgaard O. Sergienko A. Adcroft The Effects of Ice Floe‐Floe Interactions on Pressure Ridging in Sea Ice |
topic_facet |
discrete element method numerical modeling rafting ridging sea ice Physical geography GB3-5030 Oceanography GC1-1581 |
description |
Abstract The mechanical interactions between ice floes in the polar sea‐ice packs play an important role in the state and predictability of the sea‐ice cover. We use a Lagrangian‐based numerical model to investigate such floe‐floe interactions. Our simulations show that elastic and reversible deformation offers significant resistance to compression before ice floes yield with brittle failure. Compressional strength dramatically decreases once pressure ridges start to form, which implies that thicker sea ice is not necessarily stronger than thinner ice. The mechanical transition is not accounted for in most current sea‐ice models that describe ice strength by thickness alone. We propose a parameterization that describes failure mechanics from fracture toughness and Coulomb sliding, improving the representation of ridge building dynamics in particle‐based and continuum sea‐ice models. |
format |
Article in Journal/Newspaper |
author |
A. Damsgaard O. Sergienko A. Adcroft |
author_facet |
A. Damsgaard O. Sergienko A. Adcroft |
author_sort |
A. Damsgaard |
title |
The Effects of Ice Floe‐Floe Interactions on Pressure Ridging in Sea Ice |
title_short |
The Effects of Ice Floe‐Floe Interactions on Pressure Ridging in Sea Ice |
title_full |
The Effects of Ice Floe‐Floe Interactions on Pressure Ridging in Sea Ice |
title_fullStr |
The Effects of Ice Floe‐Floe Interactions on Pressure Ridging in Sea Ice |
title_full_unstemmed |
The Effects of Ice Floe‐Floe Interactions on Pressure Ridging in Sea Ice |
title_sort |
effects of ice floe‐floe interactions on pressure ridging in sea ice |
publisher |
American Geophysical Union (AGU) |
publishDate |
2021 |
url |
https://doi.org/10.1029/2020MS002336 https://doaj.org/article/957fe2baa0984080b026b0819356520a |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Journal of Advances in Modeling Earth Systems, Vol 13, Iss 7, Pp n/a-n/a (2021) |
op_relation |
https://doi.org/10.1029/2020MS002336 https://doaj.org/toc/1942-2466 1942-2466 doi:10.1029/2020MS002336 https://doaj.org/article/957fe2baa0984080b026b0819356520a |
op_doi |
https://doi.org/10.1029/2020MS002336 |
container_title |
Journal of Advances in Modeling Earth Systems |
container_volume |
13 |
container_issue |
7 |
_version_ |
1766189587537854464 |