Parameterization for subgrid-scale motion of ice-shelf calving fronts
A parameterization for the motion of ice-shelf fronts on a Cartesian grid in finite-difference land-ice models is presented. The scheme prevents artificial thinning of the ice shelf at its edge, which occurs due to the finite resolution of the model. The intuitive numerical implementation diminishes...
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Copernicus Publications
2011
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ftdoajarticles:oai:doaj.org/article:263116a6550d41b0a955eb4da0e7aee2 2023-05-15T16:40:16+02:00 Parameterization for subgrid-scale motion of ice-shelf calving fronts T. Albrecht M. Martin M. Haseloff R. Winkelmann A. Levermann 2011-01-01T00:00:00Z https://doi.org/10.5194/tc-5-35-2011 https://doaj.org/article/263116a6550d41b0a955eb4da0e7aee2 EN eng Copernicus Publications http://www.the-cryosphere.net/5/35/2011/tc-5-35-2011.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-5-35-2011 1994-0416 1994-0424 https://doaj.org/article/263116a6550d41b0a955eb4da0e7aee2 The Cryosphere, Vol 5, Iss 1, Pp 35-44 (2011) Environmental sciences GE1-350 Geology QE1-996.5 article 2011 ftdoajarticles https://doi.org/10.5194/tc-5-35-2011 2022-12-31T12:20:04Z A parameterization for the motion of ice-shelf fronts on a Cartesian grid in finite-difference land-ice models is presented. The scheme prevents artificial thinning of the ice shelf at its edge, which occurs due to the finite resolution of the model. The intuitive numerical implementation diminishes numerical dispersion at the ice front and enables the application of physical boundary conditions to improve the calculation of stress and velocity fields throughout the ice-sheet-shelf system. Numerical properties of this subgrid modification are assessed in the Potsdam Parallel Ice Sheet Model (PISM-PIK) for different geometries in one and two horizontal dimensions and are verified against an analytical solution in a flow-line setup. Article in Journal/Newspaper Ice Sheet Ice Shelf The Cryosphere Directory of Open Access Journals: DOAJ Articles Pik ENVELOPE(67.200,67.200,-70.783,-70.783) The Cryosphere 5 1 35 44 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 T. Albrecht M. Martin M. Haseloff R. Winkelmann A. Levermann Parameterization for subgrid-scale motion of ice-shelf calving fronts |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
A parameterization for the motion of ice-shelf fronts on a Cartesian grid in finite-difference land-ice models is presented. The scheme prevents artificial thinning of the ice shelf at its edge, which occurs due to the finite resolution of the model. The intuitive numerical implementation diminishes numerical dispersion at the ice front and enables the application of physical boundary conditions to improve the calculation of stress and velocity fields throughout the ice-sheet-shelf system. Numerical properties of this subgrid modification are assessed in the Potsdam Parallel Ice Sheet Model (PISM-PIK) for different geometries in one and two horizontal dimensions and are verified against an analytical solution in a flow-line setup. |
format |
Article in Journal/Newspaper |
author |
T. Albrecht M. Martin M. Haseloff R. Winkelmann A. Levermann |
author_facet |
T. Albrecht M. Martin M. Haseloff R. Winkelmann A. Levermann |
author_sort |
T. Albrecht |
title |
Parameterization for subgrid-scale motion of ice-shelf calving fronts |
title_short |
Parameterization for subgrid-scale motion of ice-shelf calving fronts |
title_full |
Parameterization for subgrid-scale motion of ice-shelf calving fronts |
title_fullStr |
Parameterization for subgrid-scale motion of ice-shelf calving fronts |
title_full_unstemmed |
Parameterization for subgrid-scale motion of ice-shelf calving fronts |
title_sort |
parameterization for subgrid-scale motion of ice-shelf calving fronts |
publisher |
Copernicus Publications |
publishDate |
2011 |
url |
https://doi.org/10.5194/tc-5-35-2011 https://doaj.org/article/263116a6550d41b0a955eb4da0e7aee2 |
long_lat |
ENVELOPE(67.200,67.200,-70.783,-70.783) |
geographic |
Pik |
geographic_facet |
Pik |
genre |
Ice Sheet Ice Shelf The Cryosphere |
genre_facet |
Ice Sheet Ice Shelf The Cryosphere |
op_source |
The Cryosphere, Vol 5, Iss 1, Pp 35-44 (2011) |
op_relation |
http://www.the-cryosphere.net/5/35/2011/tc-5-35-2011.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-5-35-2011 1994-0416 1994-0424 https://doaj.org/article/263116a6550d41b0a955eb4da0e7aee2 |
op_doi |
https://doi.org/10.5194/tc-5-35-2011 |
container_title |
The Cryosphere |
container_volume |
5 |
container_issue |
1 |
container_start_page |
35 |
op_container_end_page |
44 |
_version_ |
1766030659638263808 |