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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ftunivbruxelles:oai:dipot.ulb.ac.be:2013/112458 2023-05-15T13:37:30+02:00 Representing grounding line dynamics in numerical ice sheet models: Recent advances and outlook Docquier, David Perichon, Laura Pattyn, Frank 2011 1 full-text file(s): application/pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/112458 https://dipot.ulb.ac.be/dspace/bitstream/2013/112458/1/Docquier_Surveys_Geophysics.pdf en eng uri/info:doi/10.1007/s10712-011-9133-3 uri/info:scp/80053205075 uri/info:ulb-repo/set/1 https://dipot.ulb.ac.be/dspace/bitstream/2013/112458/1/Docquier_Surveys_Geophysics.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/112458 1 full-text file(s): info:eu-repo/semantics/openAccess Surveys in geophysics, 32 Glaciologie info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2011 ftunivbruxelles 2022-06-12T22:10:20Z 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). © 2011 Springer Science+Business Media B.V. SCOPUS: ar.j info:eu-repo/semantics/published Article in Journal/Newspaper Antarc* Antarctic Greenland Ice Sheet Ice Shelf DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) Antarctic Greenland The Antarctic |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Glaciologie |
spellingShingle |
Glaciologie Docquier, David Perichon, Laura Pattyn, Frank Representing grounding line dynamics in numerical ice sheet models: Recent advances and outlook |
topic_facet |
Glaciologie |
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). © 2011 Springer Science+Business Media B.V. SCOPUS: ar.j info:eu-repo/semantics/published |
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 |
publishDate |
2011 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/112458 https://dipot.ulb.ac.be/dspace/bitstream/2013/112458/1/Docquier_Surveys_Geophysics.pdf |
geographic |
Antarctic Greenland The Antarctic |
geographic_facet |
Antarctic Greenland The Antarctic |
genre |
Antarc* Antarctic Greenland Ice Sheet Ice Shelf |
genre_facet |
Antarc* Antarctic Greenland Ice Sheet Ice Shelf |
op_source |
Surveys in geophysics, 32 |
op_relation |
uri/info:doi/10.1007/s10712-011-9133-3 uri/info:scp/80053205075 uri/info:ulb-repo/set/1 https://dipot.ulb.ac.be/dspace/bitstream/2013/112458/1/Docquier_Surveys_Geophysics.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/112458 |
op_rights |
1 full-text file(s): info:eu-repo/semantics/openAccess |
_version_ |
1766092702571560960 |