A continuum-mechanical model for the flow of anisotropic polar ice
In order to study the mechanical behaviour of polar ice masses, the method of continuum mechanics is used. The newly developed CAFFE model (Continuum-mechanical, Anisotropic Flow model, based on an anisotropic Flow Enhancement factor) is described, which comprises an anisotropic flow law as well as...
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ftdatacite:10.48550/arxiv.0903.3078 2023-05-15T14:02:36+02:00 A continuum-mechanical model for the flow of anisotropic polar ice Greve, Ralf Placidi, Luca Seddik, Hakime 2009 https://dx.doi.org/10.48550/arxiv.0903.3078 https://arxiv.org/abs/0903.3078 unknown arXiv arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Geophysics physics.geo-ph FOS Physical sciences article-journal Article ScholarlyArticle Text 2009 ftdatacite https://doi.org/10.48550/arxiv.0903.3078 2022-04-01T14:58:47Z In order to study the mechanical behaviour of polar ice masses, the method of continuum mechanics is used. The newly developed CAFFE model (Continuum-mechanical, Anisotropic Flow model, based on an anisotropic Flow Enhancement factor) is described, which comprises an anisotropic flow law as well as a fabric evolution equation. The flow law is an extension of the isotropic Glen's flow law, in which anisotropy enters via an enhancement factor that depends on the deformability of the polycrystal. The fabric evolution equation results from an orientational mass balance and includes constitutive relations for grain rotation and recrystallization. The CAFFE model fulfills all the fundamental principles of classical continuum mechanics, is sufficiently simple to allow numerical implementations in ice-flow models and contains only a limited number of free parameters. The applicability of the CAFFE model is demonstrated by a case study for the site of the EPICA (European Project for Ice Coring in Antarctica) ice core in Dronning Maud Land, East Antarctica. : 12 pages, 11 figures, 1 table Text Antarc* Antarctica Dronning Maud Land East Antarctica EPICA ice core DataCite Metadata Store (German National Library of Science and Technology) Dronning Maud Land East Antarctica |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Geophysics physics.geo-ph FOS Physical sciences |
spellingShingle |
Geophysics physics.geo-ph FOS Physical sciences Greve, Ralf Placidi, Luca Seddik, Hakime A continuum-mechanical model for the flow of anisotropic polar ice |
topic_facet |
Geophysics physics.geo-ph FOS Physical sciences |
description |
In order to study the mechanical behaviour of polar ice masses, the method of continuum mechanics is used. The newly developed CAFFE model (Continuum-mechanical, Anisotropic Flow model, based on an anisotropic Flow Enhancement factor) is described, which comprises an anisotropic flow law as well as a fabric evolution equation. The flow law is an extension of the isotropic Glen's flow law, in which anisotropy enters via an enhancement factor that depends on the deformability of the polycrystal. The fabric evolution equation results from an orientational mass balance and includes constitutive relations for grain rotation and recrystallization. The CAFFE model fulfills all the fundamental principles of classical continuum mechanics, is sufficiently simple to allow numerical implementations in ice-flow models and contains only a limited number of free parameters. The applicability of the CAFFE model is demonstrated by a case study for the site of the EPICA (European Project for Ice Coring in Antarctica) ice core in Dronning Maud Land, East Antarctica. : 12 pages, 11 figures, 1 table |
format |
Text |
author |
Greve, Ralf Placidi, Luca Seddik, Hakime |
author_facet |
Greve, Ralf Placidi, Luca Seddik, Hakime |
author_sort |
Greve, Ralf |
title |
A continuum-mechanical model for the flow of anisotropic polar ice |
title_short |
A continuum-mechanical model for the flow of anisotropic polar ice |
title_full |
A continuum-mechanical model for the flow of anisotropic polar ice |
title_fullStr |
A continuum-mechanical model for the flow of anisotropic polar ice |
title_full_unstemmed |
A continuum-mechanical model for the flow of anisotropic polar ice |
title_sort |
continuum-mechanical model for the flow of anisotropic polar ice |
publisher |
arXiv |
publishDate |
2009 |
url |
https://dx.doi.org/10.48550/arxiv.0903.3078 https://arxiv.org/abs/0903.3078 |
geographic |
Dronning Maud Land East Antarctica |
geographic_facet |
Dronning Maud Land East Antarctica |
genre |
Antarc* Antarctica Dronning Maud Land East Antarctica EPICA ice core |
genre_facet |
Antarc* Antarctica Dronning Maud Land East Antarctica EPICA ice core |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.0903.3078 |
_version_ |
1766272927762743296 |