Representing Grounding Line Dynamics in Numerical Ice Sheet Models: Recent Advances and Outlook
Recent satellite observations of the Antarctic and Greenland ice sheets show accelerated ice flow and associated ice sheet thinning along coastal outlet glaciers in contact with the ocean. Both processes are the result of grounding line retreat due to melting at the grounding line (the grounding lin...
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Online Access: | http://hdl.handle.net/2078/167213 https://doi.org/10.1007/s10712-011-9133-3 |
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ftunivlouvain:oai:dial.uclouvain.be:boreal:167213 2024-05-12T07:53:56+00:00 Representing Grounding Line Dynamics in Numerical Ice Sheet Models: Recent Advances and Outlook Docquier, David Perichon, Laura Pattyn, Frank Université Libre de Bruxelles - Laboratoire de Glaciologie UCL - SST/ELI/ELIC - Earth & Climate 2011 http://hdl.handle.net/2078/167213 https://doi.org/10.1007/s10712-011-9133-3 eng eng Springer Netherlands boreal:167213 http://hdl.handle.net/2078/167213 doi:10.1007/s10712-011-9133-3 urn:ISSN:0169-3298 urn:EISSN:1573-0956 info:eu-repo/semantics/restrictedAccess Surveys in Geophysics : an international review journal covering the entire field of geosciences and related areas, Vol. 32, no.4-5, p. 417-435 (2011) marine ice sheet instability grounding line ice sheet modeling West Antarctic Ice Sheet info:eu-repo/semantics/article 2011 ftunivlouvain https://doi.org/10.1007/s10712-011-9133-3 2024-04-17T17:07:53Z Recent satellite observations of the Antarctic and Greenland ice sheets show accelerated ice flow and associated ice sheet thinning along coastal outlet glaciers in contact with the ocean. Both processes are the result of grounding line retreat due to melting at the grounding line (the grounding line is the contact of the ice sheet with the ocean, where it starts to float and forms an ice shelf or ice tongue). Such rapid ice loss is not yet included in large-scale ice sheet models used for IPCC projections, as most of the complex processes are poorly understood. Here we report on the state-of-the art of grounding line migration in marine ice sheets and address different ways in which grounding line migration can be attributed and represented in ice sheet models. Using one-dimensional ice flow models of the ice sheet/ice shelf system we carried out a number of sensitivity experiments with different spatial resolutions and stress approximations. These are verified with semi-analytical steady state solutions. Results show that, in large-scale finite-difference models, grounding line migration is dependent on the numerical treatment (e.g. staggered/non-staggered grid) and the level of physics involved (e.g. shallow-ice/shallow-shelf approximation). Article in Journal/Newspaper Antarc* Antarctic Greenland Ice Sheet Ice Shelf DIAL@UCLouvain (Université catholique de Louvain) Antarctic Greenland The Antarctic West Antarctic Ice Sheet Surveys in Geophysics 32 4-5 417 435 |
institution |
Open Polar |
collection |
DIAL@UCLouvain (Université catholique de Louvain) |
op_collection_id |
ftunivlouvain |
language |
English |
topic |
marine ice sheet instability grounding line ice sheet modeling West Antarctic Ice Sheet |
spellingShingle |
marine ice sheet instability grounding line ice sheet modeling West Antarctic Ice Sheet Docquier, David Perichon, Laura Pattyn, Frank Representing Grounding Line Dynamics in Numerical Ice Sheet Models: Recent Advances and Outlook |
topic_facet |
marine ice sheet instability grounding line ice sheet modeling West Antarctic Ice Sheet |
description |
Recent satellite observations of the Antarctic and Greenland ice sheets show accelerated ice flow and associated ice sheet thinning along coastal outlet glaciers in contact with the ocean. Both processes are the result of grounding line retreat due to melting at the grounding line (the grounding line is the contact of the ice sheet with the ocean, where it starts to float and forms an ice shelf or ice tongue). Such rapid ice loss is not yet included in large-scale ice sheet models used for IPCC projections, as most of the complex processes are poorly understood. Here we report on the state-of-the art of grounding line migration in marine ice sheets and address different ways in which grounding line migration can be attributed and represented in ice sheet models. Using one-dimensional ice flow models of the ice sheet/ice shelf system we carried out a number of sensitivity experiments with different spatial resolutions and stress approximations. These are verified with semi-analytical steady state solutions. Results show that, in large-scale finite-difference models, grounding line migration is dependent on the numerical treatment (e.g. staggered/non-staggered grid) and the level of physics involved (e.g. shallow-ice/shallow-shelf approximation). |
author2 |
Université Libre de Bruxelles - Laboratoire de Glaciologie UCL - SST/ELI/ELIC - Earth & Climate |
format |
Article in Journal/Newspaper |
author |
Docquier, David Perichon, Laura Pattyn, Frank |
author_facet |
Docquier, David Perichon, Laura Pattyn, Frank |
author_sort |
Docquier, David |
title |
Representing Grounding Line Dynamics in Numerical Ice Sheet Models: Recent Advances and Outlook |
title_short |
Representing Grounding Line Dynamics in Numerical Ice Sheet Models: Recent Advances and Outlook |
title_full |
Representing Grounding Line Dynamics in Numerical Ice Sheet Models: Recent Advances and Outlook |
title_fullStr |
Representing Grounding Line Dynamics in Numerical Ice Sheet Models: Recent Advances and Outlook |
title_full_unstemmed |
Representing Grounding Line Dynamics in Numerical Ice Sheet Models: Recent Advances and Outlook |
title_sort |
representing grounding line dynamics in numerical ice sheet models: recent advances and outlook |
publisher |
Springer Netherlands |
publishDate |
2011 |
url |
http://hdl.handle.net/2078/167213 https://doi.org/10.1007/s10712-011-9133-3 |
geographic |
Antarctic Greenland The Antarctic West Antarctic Ice Sheet |
geographic_facet |
Antarctic Greenland The Antarctic West Antarctic Ice Sheet |
genre |
Antarc* Antarctic Greenland Ice Sheet Ice Shelf |
genre_facet |
Antarc* Antarctic Greenland Ice Sheet Ice Shelf |
op_source |
Surveys in Geophysics : an international review journal covering the entire field of geosciences and related areas, Vol. 32, no.4-5, p. 417-435 (2011) |
op_relation |
boreal:167213 http://hdl.handle.net/2078/167213 doi:10.1007/s10712-011-9133-3 urn:ISSN:0169-3298 urn:EISSN:1573-0956 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s10712-011-9133-3 |
container_title |
Surveys in Geophysics |
container_volume |
32 |
container_issue |
4-5 |
container_start_page |
417 |
op_container_end_page |
435 |
_version_ |
1798845619459063808 |