The Effects of Ice Floe-Floe Interactions on Pressure Ridging in Sea Ice
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 off...
Published in: | Journal of Advances in Modeling Earth Systems |
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Language: | English |
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2021
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Online Access: | https://pure.au.dk/portal/da/publications/the-effects-of-ice-floefloe-interactions-on-pressure-ridging-in-sea-ice(d97a4073-181d-4594-b5a6-98d9eb9edcb5).html https://doi.org/10.1029/2020MS002336 http://www.scopus.com/inward/record.url?scp=85111169634&partnerID=8YFLogxK |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/d97a4073-181d-4594-b5a6-98d9eb9edcb5 2023-05-15T18:16:09+02:00 The Effects of Ice Floe-Floe Interactions on Pressure Ridging in Sea Ice Damsgaard, Anders Sergienko, Olga Adcroft, Alistair 2021-07 https://pure.au.dk/portal/da/publications/the-effects-of-ice-floefloe-interactions-on-pressure-ridging-in-sea-ice(d97a4073-181d-4594-b5a6-98d9eb9edcb5).html https://doi.org/10.1029/2020MS002336 http://www.scopus.com/inward/record.url?scp=85111169634&partnerID=8YFLogxK eng eng info:eu-repo/semantics/openAccess Damsgaard , A , Sergienko , O & Adcroft , A 2021 , ' The Effects of Ice Floe-Floe Interactions on Pressure Ridging in Sea Ice ' , Journal of Advances in Modeling Earth Systems , vol. 13 , no. 7 , e2020MS002336 . https://doi.org/10.1029/2020MS002336 discrete element method numerical modeling rafting ridging sea ice article 2021 ftuniaarhuspubl https://doi.org/10.1029/2020MS002336 2021-09-08T22:45:45Z 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 Aarhus University: Research Journal of Advances in Modeling Earth Systems 13 7 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
discrete element method numerical modeling rafting ridging sea ice |
spellingShingle |
discrete element method numerical modeling rafting ridging sea ice Damsgaard, Anders Sergienko, Olga Adcroft, Alistair The Effects of Ice Floe-Floe Interactions on Pressure Ridging in Sea Ice |
topic_facet |
discrete element method numerical modeling rafting ridging sea ice |
description |
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 |
Damsgaard, Anders Sergienko, Olga Adcroft, Alistair |
author_facet |
Damsgaard, Anders Sergienko, Olga Adcroft, Alistair |
author_sort |
Damsgaard, Anders |
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 |
publishDate |
2021 |
url |
https://pure.au.dk/portal/da/publications/the-effects-of-ice-floefloe-interactions-on-pressure-ridging-in-sea-ice(d97a4073-181d-4594-b5a6-98d9eb9edcb5).html https://doi.org/10.1029/2020MS002336 http://www.scopus.com/inward/record.url?scp=85111169634&partnerID=8YFLogxK |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Damsgaard , A , Sergienko , O & Adcroft , A 2021 , ' The Effects of Ice Floe-Floe Interactions on Pressure Ridging in Sea Ice ' , Journal of Advances in Modeling Earth Systems , vol. 13 , no. 7 , e2020MS002336 . https://doi.org/10.1029/2020MS002336 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2020MS002336 |
container_title |
Journal of Advances in Modeling Earth Systems |
container_volume |
13 |
container_issue |
7 |
_version_ |
1766189587307167744 |