Semi-brittle rheology and ice dynamics in DynEarthSol3D
We present a semi-brittle rheology and explore its potential for simulating glacier and ice sheet deformation using a numerical model, DynEarthSol3D (DES), in simple, idealized experiments. DES is a finite-element solver for the dynamic and quasi-static simulation of continuous media. The experiment...
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Online Access: | https://doi.org/10.5194/tc-11-117-2017 https://tc.copernicus.org/articles/11/117/2017/ |
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ftcopernicus:oai:publications.copernicus.org:tc50854 2023-05-15T16:40:21+02:00 Semi-brittle rheology and ice dynamics in DynEarthSol3D Logan, Liz C. Lavier, Luc L. Choi, Eunseo Tan, Eh Catania, Ginny A. 2018-09-27 application/pdf https://doi.org/10.5194/tc-11-117-2017 https://tc.copernicus.org/articles/11/117/2017/ eng eng doi:10.5194/tc-11-117-2017 https://tc.copernicus.org/articles/11/117/2017/ eISSN: 1994-0424 Text 2018 ftcopernicus https://doi.org/10.5194/tc-11-117-2017 2020-07-20T16:23:52Z We present a semi-brittle rheology and explore its potential for simulating glacier and ice sheet deformation using a numerical model, DynEarthSol3D (DES), in simple, idealized experiments. DES is a finite-element solver for the dynamic and quasi-static simulation of continuous media. The experiments within demonstrate the potential for DES to simulate ice failure and deformation in dynamic regions of glaciers, especially at quickly changing boundaries like glacier termini in contact with the ocean. We explore the effect that different rheological assumptions have on the pattern of flow and failure. We find that the use of a semi-brittle constitutive law is a sufficient material condition to form the characteristic pattern of basal crevasse-aided pinch-and-swell geometry, which is observed globally in floating portions of ice and can often aid in eroding the ice sheet margins in direct contact with oceans. Text Ice Sheet Copernicus Publications: E-Journals The Cryosphere 11 1 117 132 |
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Open Polar |
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Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
We present a semi-brittle rheology and explore its potential for simulating glacier and ice sheet deformation using a numerical model, DynEarthSol3D (DES), in simple, idealized experiments. DES is a finite-element solver for the dynamic and quasi-static simulation of continuous media. The experiments within demonstrate the potential for DES to simulate ice failure and deformation in dynamic regions of glaciers, especially at quickly changing boundaries like glacier termini in contact with the ocean. We explore the effect that different rheological assumptions have on the pattern of flow and failure. We find that the use of a semi-brittle constitutive law is a sufficient material condition to form the characteristic pattern of basal crevasse-aided pinch-and-swell geometry, which is observed globally in floating portions of ice and can often aid in eroding the ice sheet margins in direct contact with oceans. |
format |
Text |
author |
Logan, Liz C. Lavier, Luc L. Choi, Eunseo Tan, Eh Catania, Ginny A. |
spellingShingle |
Logan, Liz C. Lavier, Luc L. Choi, Eunseo Tan, Eh Catania, Ginny A. Semi-brittle rheology and ice dynamics in DynEarthSol3D |
author_facet |
Logan, Liz C. Lavier, Luc L. Choi, Eunseo Tan, Eh Catania, Ginny A. |
author_sort |
Logan, Liz C. |
title |
Semi-brittle rheology and ice dynamics in DynEarthSol3D |
title_short |
Semi-brittle rheology and ice dynamics in DynEarthSol3D |
title_full |
Semi-brittle rheology and ice dynamics in DynEarthSol3D |
title_fullStr |
Semi-brittle rheology and ice dynamics in DynEarthSol3D |
title_full_unstemmed |
Semi-brittle rheology and ice dynamics in DynEarthSol3D |
title_sort |
semi-brittle rheology and ice dynamics in dynearthsol3d |
publishDate |
2018 |
url |
https://doi.org/10.5194/tc-11-117-2017 https://tc.copernicus.org/articles/11/117/2017/ |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
eISSN: 1994-0424 |
op_relation |
doi:10.5194/tc-11-117-2017 https://tc.copernicus.org/articles/11/117/2017/ |
op_doi |
https://doi.org/10.5194/tc-11-117-2017 |
container_title |
The Cryosphere |
container_volume |
11 |
container_issue |
1 |
container_start_page |
117 |
op_container_end_page |
132 |
_version_ |
1766030746283147264 |