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...
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ftawi:oai:epic.awi.de:38895 2023-05-15T13:40:27+02:00 Thermal structure and basal sliding parametrisation at Pine Island Glacier – a 3-D full-Stokes model study Wilkens, Nina Behrens, Jörn Kleiner, Thomas Rippin, David M. Rückamp, Martin Humbert, Angelika 2015 application/pdf https://epic.awi.de/id/eprint/38895/ https://epic.awi.de/id/eprint/38895/1/tc-9-675-2015.pdf https://doi.org/10.5194/tc-9-675-2015 https://hdl.handle.net/10013/epic.46149 https://hdl.handle.net/10013/epic.46149.d001 unknown COPERNICUS GESELLSCHAFT MBH https://epic.awi.de/id/eprint/38895/1/tc-9-675-2015.pdf https://hdl.handle.net/10013/epic.46149.d001 Wilkens, N. , Behrens, J. , Kleiner, T. orcid:0000-0001-7825-5765 , Rippin, D. M. , Rückamp, M. orcid:0000-0003-2512-7238 and Humbert, A. (2015) Thermal structure and basal sliding parametrisation at Pine Island Glacier – a 3-D full-Stokes model study , The Cryosphere, 9 (2), pp. 675-690 . doi:10.5194/tc-9-675-2015 <https://doi.org/10.5194/tc-9-675-2015> , hdl:10013/epic.46149 EPIC3The Cryosphere, COPERNICUS GESELLSCHAFT MBH, 9(2), pp. 675-690, ISSN: 1994-0424 Article isiRev 2015 ftawi https://doi.org/10.5194/tc-9-675-2015 2021-12-24T15:40:48Z 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 Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic The Antarctic Pine Island Glacier ENVELOPE(-101.000,-101.000,-75.000,-75.000) The Cryosphere 9 2 675 690 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
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, Nina Behrens, Jörn Kleiner, Thomas Rippin, David M. Rückamp, Martin Humbert, Angelika |
spellingShingle |
Wilkens, Nina Behrens, Jörn Kleiner, Thomas Rippin, David M. Rückamp, Martin Humbert, Angelika Thermal structure and basal sliding parametrisation at Pine Island Glacier – a 3-D full-Stokes model study |
author_facet |
Wilkens, Nina Behrens, Jörn Kleiner, Thomas Rippin, David M. Rückamp, Martin Humbert, Angelika |
author_sort |
Wilkens, Nina |
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 GESELLSCHAFT MBH |
publishDate |
2015 |
url |
https://epic.awi.de/id/eprint/38895/ https://epic.awi.de/id/eprint/38895/1/tc-9-675-2015.pdf https://doi.org/10.5194/tc-9-675-2015 https://hdl.handle.net/10013/epic.46149 https://hdl.handle.net/10013/epic.46149.d001 |
long_lat |
ENVELOPE(-101.000,-101.000,-75.000,-75.000) |
geographic |
Antarctic The Antarctic Pine Island Glacier |
geographic_facet |
Antarctic The Antarctic Pine Island Glacier |
genre |
Antarc* Antarctic Ice Sheet Pine Island Glacier The Cryosphere |
genre_facet |
Antarc* Antarctic Ice Sheet Pine Island Glacier The Cryosphere |
op_source |
EPIC3The Cryosphere, COPERNICUS GESELLSCHAFT MBH, 9(2), pp. 675-690, ISSN: 1994-0424 |
op_relation |
https://epic.awi.de/id/eprint/38895/1/tc-9-675-2015.pdf https://hdl.handle.net/10013/epic.46149.d001 Wilkens, N. , Behrens, J. , Kleiner, T. orcid:0000-0001-7825-5765 , Rippin, D. M. , Rückamp, M. orcid:0000-0003-2512-7238 and Humbert, A. (2015) Thermal structure and basal sliding parametrisation at Pine Island Glacier – a 3-D full-Stokes model study , The Cryosphere, 9 (2), pp. 675-690 . doi:10.5194/tc-9-675-2015 <https://doi.org/10.5194/tc-9-675-2015> , hdl:10013/epic.46149 |
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_ |
1766134700834816000 |