Thermal structure and basal sliding parametrisation at Pine Island Glacier – a 3-D full-Stokes model study
Pine Island Glacier is one of the fastest changing glaciers of the Antarctic Ice Sheet and therefore of scientific interest. The glacier holds enough ice to raise the global sea level significantly (~ 0.5 m) when fully melted. The question addressed by numerous modelling studies of the glacier focus...
Published in: | The Cryosphere |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2015
|
Subjects: | |
Online Access: | https://doi.org/10.5194/tc-9-675-2015 https://noa.gwlb.de/receive/cop_mods_00016996 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00016951/tc-9-675-2015.pdf https://tc.copernicus.org/articles/9/675/2015/tc-9-675-2015.pdf |
id |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00016996 |
---|---|
record_format |
openpolar |
spelling |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00016996 2023-05-15T13:41:02+02:00 Thermal structure and basal sliding parametrisation at Pine Island Glacier – a 3-D full-Stokes model study Wilkens, N. Behrens, J. Kleiner, T. Rippin, D. Rückamp, M. Humbert, A. 2015-04 electronic https://doi.org/10.5194/tc-9-675-2015 https://noa.gwlb.de/receive/cop_mods_00016996 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00016951/tc-9-675-2015.pdf https://tc.copernicus.org/articles/9/675/2015/tc-9-675-2015.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-9-675-2015 https://noa.gwlb.de/receive/cop_mods_00016996 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00016951/tc-9-675-2015.pdf https://tc.copernicus.org/articles/9/675/2015/tc-9-675-2015.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2015 ftnonlinearchiv https://doi.org/10.5194/tc-9-675-2015 2022-02-08T22:53:52Z Pine Island Glacier is one of the fastest changing glaciers of the Antarctic Ice Sheet and therefore of scientific interest. The glacier holds enough ice to raise the global sea level significantly (~ 0.5 m) when fully melted. The question addressed by numerous modelling studies of the glacier focuses on whether the observed changes are a start of an uncontrolled and accelerating retreat. The movement of the glacier is, in the fast-flowing areas, dominated by basal motion. In modelling studies the parametrisation of the basal motion is therefore crucial. Inversion methods are commonly applied to reproduce the complex surface flow structure of Pine Island Glacier by using information of the observed surface velocity field to constrain, among other things, basal sliding. We introduce two different approaches of combining a physical parameter, the basal roughness, with basal sliding parametrisations. This way basal sliding is again connected closer to its original formulation. We show that the basal roughness is an important and helpful parameter to consider and that many features of the flow structure can be reproduced with these approaches. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Pine Island Glacier The Cryosphere Niedersächsisches Online-Archiv NOA Antarctic Pine Island Glacier ENVELOPE(-101.000,-101.000,-75.000,-75.000) The Antarctic The Cryosphere 9 2 675 690 |
institution |
Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Wilkens, N. Behrens, J. Kleiner, T. Rippin, D. Rückamp, M. Humbert, A. Thermal structure and basal sliding parametrisation at Pine Island Glacier – a 3-D full-Stokes model study |
topic_facet |
article Verlagsveröffentlichung |
description |
Pine Island Glacier is one of the fastest changing glaciers of the Antarctic Ice Sheet and therefore of scientific interest. The glacier holds enough ice to raise the global sea level significantly (~ 0.5 m) when fully melted. The question addressed by numerous modelling studies of the glacier focuses on whether the observed changes are a start of an uncontrolled and accelerating retreat. The movement of the glacier is, in the fast-flowing areas, dominated by basal motion. In modelling studies the parametrisation of the basal motion is therefore crucial. Inversion methods are commonly applied to reproduce the complex surface flow structure of Pine Island Glacier by using information of the observed surface velocity field to constrain, among other things, basal sliding. We introduce two different approaches of combining a physical parameter, the basal roughness, with basal sliding parametrisations. This way basal sliding is again connected closer to its original formulation. We show that the basal roughness is an important and helpful parameter to consider and that many features of the flow structure can be reproduced with these approaches. |
format |
Article in Journal/Newspaper |
author |
Wilkens, N. Behrens, J. Kleiner, T. Rippin, D. Rückamp, M. Humbert, A. |
author_facet |
Wilkens, N. Behrens, J. Kleiner, T. Rippin, D. Rückamp, M. Humbert, A. |
author_sort |
Wilkens, N. |
title |
Thermal structure and basal sliding parametrisation at Pine Island Glacier – a 3-D full-Stokes model study |
title_short |
Thermal structure and basal sliding parametrisation at Pine Island Glacier – a 3-D full-Stokes model study |
title_full |
Thermal structure and basal sliding parametrisation at Pine Island Glacier – a 3-D full-Stokes model study |
title_fullStr |
Thermal structure and basal sliding parametrisation at Pine Island Glacier – a 3-D full-Stokes model study |
title_full_unstemmed |
Thermal structure and basal sliding parametrisation at Pine Island Glacier – a 3-D full-Stokes model study |
title_sort |
thermal structure and basal sliding parametrisation at pine island glacier – a 3-d full-stokes model study |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/tc-9-675-2015 https://noa.gwlb.de/receive/cop_mods_00016996 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00016951/tc-9-675-2015.pdf https://tc.copernicus.org/articles/9/675/2015/tc-9-675-2015.pdf |
long_lat |
ENVELOPE(-101.000,-101.000,-75.000,-75.000) |
geographic |
Antarctic Pine Island Glacier The Antarctic |
geographic_facet |
Antarctic Pine Island Glacier The Antarctic |
genre |
Antarc* Antarctic Ice Sheet Pine Island Glacier The Cryosphere |
genre_facet |
Antarc* Antarctic Ice Sheet Pine Island Glacier The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-9-675-2015 https://noa.gwlb.de/receive/cop_mods_00016996 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00016951/tc-9-675-2015.pdf https://tc.copernicus.org/articles/9/675/2015/tc-9-675-2015.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-9-675-2015 |
container_title |
The Cryosphere |
container_volume |
9 |
container_issue |
2 |
container_start_page |
675 |
op_container_end_page |
690 |
_version_ |
1766144959520440320 |