The elastic–viscous–plastic method revisited
In this paper, we show that one of the most widely used methods to solve the non-linear viscous–plastic (VP) sea ice rheology, the elastic–viscous–plastic (EVP) method, generates artificial linear bands of high deformation that may be confounded with real linear kinematic features observed in the Ar...
Published in: | Ocean Modelling |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2013
|
Subjects: | |
Online Access: | http://nora.nerc.ac.uk/id/eprint/503596/ https://nora.nerc.ac.uk/id/eprint/503596/1/1-s2.0-S146350031300098X-main.pdf https://doi.org/10.1016/j.ocemod.2013.05.013 |
id |
ftnerc:oai:nora.nerc.ac.uk:503596 |
---|---|
record_format |
openpolar |
spelling |
ftnerc:oai:nora.nerc.ac.uk:503596 2023-05-15T15:03:06+02:00 The elastic–viscous–plastic method revisited Bouillon, Sylvain Fichefet, Thierry Legat, Vincent Madec, Gurvan 2013-11 text http://nora.nerc.ac.uk/id/eprint/503596/ https://nora.nerc.ac.uk/id/eprint/503596/1/1-s2.0-S146350031300098X-main.pdf https://doi.org/10.1016/j.ocemod.2013.05.013 en eng https://nora.nerc.ac.uk/id/eprint/503596/1/1-s2.0-S146350031300098X-main.pdf Bouillon, Sylvain; Fichefet, Thierry; Legat, Vincent; Madec, Gurvan. 2013 The elastic–viscous–plastic method revisited. Ocean Modelling, 71. 2-12. https://doi.org/10.1016/j.ocemod.2013.05.013 <https://doi.org/10.1016/j.ocemod.2013.05.013> Publication - Article PeerReviewed 2013 ftnerc https://doi.org/10.1016/j.ocemod.2013.05.013 2023-02-04T19:37:54Z In this paper, we show that one of the most widely used methods to solve the non-linear viscous–plastic (VP) sea ice rheology, the elastic–viscous–plastic (EVP) method, generates artificial linear bands of high deformation that may be confounded with real linear kinematic features observed in the Arctic ice pack. These numerical artefacts are easily filtered out by using a slightly different regularization of the internal stress. In addition, the EVP method is reinterpreted as an iterative solver and a clear distinction appears between the numerical and physical parameters. Two numerical parameters determine the stability and accuracy of the method and are adjusted to avoid the noisy ice deformation fields frequently observed with the EVP method in nearly rigid ice areas. This study also confirms the unsatisfactory numerical convergence of the EVP method and investigates the effects of the numerical parameters on sea ice deformation, internal stress and velocity fields obtained with unconverged solutions. Article in Journal/Newspaper Arctic ice pack Sea ice Natural Environment Research Council: NERC Open Research Archive Arctic Ocean Modelling 71 2 12 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
In this paper, we show that one of the most widely used methods to solve the non-linear viscous–plastic (VP) sea ice rheology, the elastic–viscous–plastic (EVP) method, generates artificial linear bands of high deformation that may be confounded with real linear kinematic features observed in the Arctic ice pack. These numerical artefacts are easily filtered out by using a slightly different regularization of the internal stress. In addition, the EVP method is reinterpreted as an iterative solver and a clear distinction appears between the numerical and physical parameters. Two numerical parameters determine the stability and accuracy of the method and are adjusted to avoid the noisy ice deformation fields frequently observed with the EVP method in nearly rigid ice areas. This study also confirms the unsatisfactory numerical convergence of the EVP method and investigates the effects of the numerical parameters on sea ice deformation, internal stress and velocity fields obtained with unconverged solutions. |
format |
Article in Journal/Newspaper |
author |
Bouillon, Sylvain Fichefet, Thierry Legat, Vincent Madec, Gurvan |
spellingShingle |
Bouillon, Sylvain Fichefet, Thierry Legat, Vincent Madec, Gurvan The elastic–viscous–plastic method revisited |
author_facet |
Bouillon, Sylvain Fichefet, Thierry Legat, Vincent Madec, Gurvan |
author_sort |
Bouillon, Sylvain |
title |
The elastic–viscous–plastic method revisited |
title_short |
The elastic–viscous–plastic method revisited |
title_full |
The elastic–viscous–plastic method revisited |
title_fullStr |
The elastic–viscous–plastic method revisited |
title_full_unstemmed |
The elastic–viscous–plastic method revisited |
title_sort |
elastic–viscous–plastic method revisited |
publishDate |
2013 |
url |
http://nora.nerc.ac.uk/id/eprint/503596/ https://nora.nerc.ac.uk/id/eprint/503596/1/1-s2.0-S146350031300098X-main.pdf https://doi.org/10.1016/j.ocemod.2013.05.013 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic ice pack Sea ice |
genre_facet |
Arctic ice pack Sea ice |
op_relation |
https://nora.nerc.ac.uk/id/eprint/503596/1/1-s2.0-S146350031300098X-main.pdf Bouillon, Sylvain; Fichefet, Thierry; Legat, Vincent; Madec, Gurvan. 2013 The elastic–viscous–plastic method revisited. Ocean Modelling, 71. 2-12. https://doi.org/10.1016/j.ocemod.2013.05.013 <https://doi.org/10.1016/j.ocemod.2013.05.013> |
op_doi |
https://doi.org/10.1016/j.ocemod.2013.05.013 |
container_title |
Ocean Modelling |
container_volume |
71 |
container_start_page |
2 |
op_container_end_page |
12 |
_version_ |
1766335002791903232 |