Ice bridges and ridges in the Maxwell-EB sea ice rheology
This paper presents a first implementation of a new rheological model for sea ice on geophysical scales. This continuum model, called Maxwell elasto-brittle (Maxwell-EB), is based on a Maxwell constitutive law, a progressive damage mechanism that is coupled to both the elastic modulus and apparent v...
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Copernicus Publications
2017
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fttriple:oai:gotriple.eu:oai:doaj.org/article:87ec1af4468c42a48c58b8b7e94d19a5 2023-05-15T14:59:24+02:00 Ice bridges and ridges in the Maxwell-EB sea ice rheology V. Dansereau J. Weiss P. Saramito P. Lattes E. Coche 2017-09-01 https://doi.org/10.5194/tc-11-2033-2017 https://www.the-cryosphere.net/11/2033/2017/tc-11-2033-2017.pdf https://doaj.org/article/87ec1af4468c42a48c58b8b7e94d19a5 en eng Copernicus Publications doi:10.5194/tc-11-2033-2017 1994-0416 1994-0424 https://www.the-cryosphere.net/11/2033/2017/tc-11-2033-2017.pdf https://doaj.org/article/87ec1af4468c42a48c58b8b7e94d19a5 undefined The Cryosphere, Vol 11, Pp 2033-2058 (2017) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2017 fttriple https://doi.org/10.5194/tc-11-2033-2017 2023-01-22T19:33:13Z This paper presents a first implementation of a new rheological model for sea ice on geophysical scales. This continuum model, called Maxwell elasto-brittle (Maxwell-EB), is based on a Maxwell constitutive law, a progressive damage mechanism that is coupled to both the elastic modulus and apparent viscosity of the ice cover and a Mohr–Coulomb damage criterion that allows for pure (uniaxial and biaxial) tensile strength. The model is tested on the basis of its capability to reproduce the complex mechanical and dynamical behaviour of sea ice drifting through a narrow passage. Idealized as well as realistic simulations of the flow of ice through Nares Strait are presented. These demonstrate that the model reproduces the formation of stable ice bridges as well as the stoppage of the flow, a phenomenon occurring within numerous channels of the Arctic. In agreement with observations, the model captures the propagation of damage along narrow arch-like kinematic features, the discontinuities in the velocity field across these features dividing the ice cover into floes, the strong spatial localization of the thickest, ridged ice, the presence of landfast ice in bays and fjords and the opening of polynyas downstream of the strait. The model represents various dynamical behaviours linked to an overall weakening of the ice cover and to the shorter lifespan of ice bridges, with implications in terms of increased ice export through narrow outflow pathways of the Arctic. Article in Journal/Newspaper Arctic Nares strait Sea ice The Cryosphere Unknown Arctic Nares ENVELOPE(158.167,158.167,-81.450,-81.450) Narrow Passage ENVELOPE(-79.266,-79.266,55.684,55.684) The Cryosphere 11 5 2033 2058 |
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language |
English |
topic |
geo envir |
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geo envir V. Dansereau J. Weiss P. Saramito P. Lattes E. Coche Ice bridges and ridges in the Maxwell-EB sea ice rheology |
topic_facet |
geo envir |
description |
This paper presents a first implementation of a new rheological model for sea ice on geophysical scales. This continuum model, called Maxwell elasto-brittle (Maxwell-EB), is based on a Maxwell constitutive law, a progressive damage mechanism that is coupled to both the elastic modulus and apparent viscosity of the ice cover and a Mohr–Coulomb damage criterion that allows for pure (uniaxial and biaxial) tensile strength. The model is tested on the basis of its capability to reproduce the complex mechanical and dynamical behaviour of sea ice drifting through a narrow passage. Idealized as well as realistic simulations of the flow of ice through Nares Strait are presented. These demonstrate that the model reproduces the formation of stable ice bridges as well as the stoppage of the flow, a phenomenon occurring within numerous channels of the Arctic. In agreement with observations, the model captures the propagation of damage along narrow arch-like kinematic features, the discontinuities in the velocity field across these features dividing the ice cover into floes, the strong spatial localization of the thickest, ridged ice, the presence of landfast ice in bays and fjords and the opening of polynyas downstream of the strait. The model represents various dynamical behaviours linked to an overall weakening of the ice cover and to the shorter lifespan of ice bridges, with implications in terms of increased ice export through narrow outflow pathways of the Arctic. |
format |
Article in Journal/Newspaper |
author |
V. Dansereau J. Weiss P. Saramito P. Lattes E. Coche |
author_facet |
V. Dansereau J. Weiss P. Saramito P. Lattes E. Coche |
author_sort |
V. Dansereau |
title |
Ice bridges and ridges in the Maxwell-EB sea ice rheology |
title_short |
Ice bridges and ridges in the Maxwell-EB sea ice rheology |
title_full |
Ice bridges and ridges in the Maxwell-EB sea ice rheology |
title_fullStr |
Ice bridges and ridges in the Maxwell-EB sea ice rheology |
title_full_unstemmed |
Ice bridges and ridges in the Maxwell-EB sea ice rheology |
title_sort |
ice bridges and ridges in the maxwell-eb sea ice rheology |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/tc-11-2033-2017 https://www.the-cryosphere.net/11/2033/2017/tc-11-2033-2017.pdf https://doaj.org/article/87ec1af4468c42a48c58b8b7e94d19a5 |
long_lat |
ENVELOPE(158.167,158.167,-81.450,-81.450) ENVELOPE(-79.266,-79.266,55.684,55.684) |
geographic |
Arctic Nares Narrow Passage |
geographic_facet |
Arctic Nares Narrow Passage |
genre |
Arctic Nares strait Sea ice The Cryosphere |
genre_facet |
Arctic Nares strait Sea ice The Cryosphere |
op_source |
The Cryosphere, Vol 11, Pp 2033-2058 (2017) |
op_relation |
doi:10.5194/tc-11-2033-2017 1994-0416 1994-0424 https://www.the-cryosphere.net/11/2033/2017/tc-11-2033-2017.pdf https://doaj.org/article/87ec1af4468c42a48c58b8b7e94d19a5 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-11-2033-2017 |
container_title |
The Cryosphere |
container_volume |
11 |
container_issue |
5 |
container_start_page |
2033 |
op_container_end_page |
2058 |
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1766331506774507520 |