Damaging viscous-plastic sea ice
We implement a damage parametrization in the standard viscous-plastic sea ice model to disentangle its effect from model physics (visco-elastic or elasto-brittle vs. visco-plastic) on its ability to reproduce observed scaling laws of deformation. To this end, we compare scaling properties and multif...
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Copernicus Publications
2023
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00067991 2023-08-27T04:11:53+02:00 Damaging viscous-plastic sea ice Savard, Antoine Tremblay, Bruno 2023-08 electronic https://doi.org/10.5194/egusphere-2023-1354 https://noa.gwlb.de/receive/cop_mods_00067991 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00066428/egusphere-2023-1354.pdf https://egusphere.copernicus.org/preprints/2023/egusphere-2023-1354/egusphere-2023-1354.pdf eng eng Copernicus Publications https://doi.org/10.5194/egusphere-2023-1354 https://noa.gwlb.de/receive/cop_mods_00067991 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00066428/egusphere-2023-1354.pdf https://egusphere.copernicus.org/preprints/2023/egusphere-2023-1354/egusphere-2023-1354.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2023 ftnonlinearchiv https://doi.org/10.5194/egusphere-2023-1354 2023-08-06T23:19:55Z We implement a damage parametrization in the standard viscous-plastic sea ice model to disentangle its effect from model physics (visco-elastic or elasto-brittle vs. visco-plastic) on its ability to reproduce observed scaling laws of deformation. To this end, we compare scaling properties and multifractality of simulated divergence and shear strain rate (as proposed in SIREx1), with those derived from the RADARSAT Geophysical Processor System (RGPS). Results show that including a damage parametrization in the standard viscous-plastic model increases the spatial, but decreases temporal localization of simulated Linear Kinematic Features, and brings all spatial deformation rate statistics in line with observations from RGPS without the need to increase the mechanical shear strength of sea ice as recently proposed for lower resolution viscous-plastic sea ice models. In fact, including damage an healing timescale of th = 30 days and an increased mechanical strength unveil multifractal behavior that does not fit the theory. Therefore, a damage parametrization is a powerful tuning knob affecting the deformation statistics. Article in Journal/Newspaper Sea ice Niedersächsisches Online-Archiv NOA |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Savard, Antoine Tremblay, Bruno Damaging viscous-plastic sea ice |
topic_facet |
article Verlagsveröffentlichung |
description |
We implement a damage parametrization in the standard viscous-plastic sea ice model to disentangle its effect from model physics (visco-elastic or elasto-brittle vs. visco-plastic) on its ability to reproduce observed scaling laws of deformation. To this end, we compare scaling properties and multifractality of simulated divergence and shear strain rate (as proposed in SIREx1), with those derived from the RADARSAT Geophysical Processor System (RGPS). Results show that including a damage parametrization in the standard viscous-plastic model increases the spatial, but decreases temporal localization of simulated Linear Kinematic Features, and brings all spatial deformation rate statistics in line with observations from RGPS without the need to increase the mechanical shear strength of sea ice as recently proposed for lower resolution viscous-plastic sea ice models. In fact, including damage an healing timescale of th = 30 days and an increased mechanical strength unveil multifractal behavior that does not fit the theory. Therefore, a damage parametrization is a powerful tuning knob affecting the deformation statistics. |
format |
Article in Journal/Newspaper |
author |
Savard, Antoine Tremblay, Bruno |
author_facet |
Savard, Antoine Tremblay, Bruno |
author_sort |
Savard, Antoine |
title |
Damaging viscous-plastic sea ice |
title_short |
Damaging viscous-plastic sea ice |
title_full |
Damaging viscous-plastic sea ice |
title_fullStr |
Damaging viscous-plastic sea ice |
title_full_unstemmed |
Damaging viscous-plastic sea ice |
title_sort |
damaging viscous-plastic sea ice |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://doi.org/10.5194/egusphere-2023-1354 https://noa.gwlb.de/receive/cop_mods_00067991 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00066428/egusphere-2023-1354.pdf https://egusphere.copernicus.org/preprints/2023/egusphere-2023-1354/egusphere-2023-1354.pdf |
genre |
Sea ice |
genre_facet |
Sea ice |
op_relation |
https://doi.org/10.5194/egusphere-2023-1354 https://noa.gwlb.de/receive/cop_mods_00067991 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00066428/egusphere-2023-1354.pdf https://egusphere.copernicus.org/preprints/2023/egusphere-2023-1354/egusphere-2023-1354.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/egusphere-2023-1354 |
_version_ |
1775355529360572416 |