Sensitivity experiments with a numerical ice sheet model including full thermo-mechanical coupling
An efficient numerical ice sheet model, including time dependence and full thermo-mechanical coupling, has been developed to investigate the thermal regime and overall configuration of apolar ice sheet with respect to changing environmental conditions. From basic sensitivity experiments, in which a...
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ftawi:oai:epic.awi.de:3912 2024-09-15T17:47:05+00:00 Sensitivity experiments with a numerical ice sheet model including full thermo-mechanical coupling Huybrechts, Philippe 1987 application/pdf https://epic.awi.de/id/eprint/3912/ https://epic.awi.de/id/eprint/3912/1/Huy1987a.pdf https://hdl.handle.net/10013/epic.14488 https://hdl.handle.net/10013/epic.14488.d001 unknown https://epic.awi.de/id/eprint/3912/1/Huy1987a.pdf https://hdl.handle.net/10013/epic.14488.d001 Huybrechts, P. (1987) Sensitivity experiments with a numerical ice sheet model including full thermo-mechanical coupling , Proceedings of the Belgian National Colloquium on Antarctic Research . hdl:10013/epic.14488 EPIC3Proceedings of the Belgian National Colloquium on Antarctic Research, pp. 226-239 Conference notRev 1987 ftawi 2024-06-24T03:54:11Z An efficient numerical ice sheet model, including time dependence and full thermo-mechanical coupling, has been developed to investigate the thermal regime and overall configuration of apolar ice sheet with respect to changing environmental conditions. From basic sensitivity experiments, in which a schematic East-Antarctic Ice Sheet is forced with a typicalglacial-interglacial climatic shift, it is found that (i):the mutual interaction of temperature and deformation has a stabilizing effect on its steady state configuration and (ii) in the transientmode, this climatic transition initially leads to increased ice thickness due to enhanced accumulation, whereafter this trend is reversed due to a warmer base. Time scales for this reversal areof the order of 10 3 years in marginal zones and of 10 4 years in interior parts. Time-dependent modelling of the Vostok flowline, indicates that the Vostok Station area has risen about 95m since the beginning of the present interglacial due to thermo-mechanical effects, which is of particular interest in interpreting the palaeoclimatic signal of the obtained ice core there. Conference Object Antarc* Antarctic ice core Ice Sheet Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
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description |
An efficient numerical ice sheet model, including time dependence and full thermo-mechanical coupling, has been developed to investigate the thermal regime and overall configuration of apolar ice sheet with respect to changing environmental conditions. From basic sensitivity experiments, in which a schematic East-Antarctic Ice Sheet is forced with a typicalglacial-interglacial climatic shift, it is found that (i):the mutual interaction of temperature and deformation has a stabilizing effect on its steady state configuration and (ii) in the transientmode, this climatic transition initially leads to increased ice thickness due to enhanced accumulation, whereafter this trend is reversed due to a warmer base. Time scales for this reversal areof the order of 10 3 years in marginal zones and of 10 4 years in interior parts. Time-dependent modelling of the Vostok flowline, indicates that the Vostok Station area has risen about 95m since the beginning of the present interglacial due to thermo-mechanical effects, which is of particular interest in interpreting the palaeoclimatic signal of the obtained ice core there. |
format |
Conference Object |
author |
Huybrechts, Philippe |
spellingShingle |
Huybrechts, Philippe Sensitivity experiments with a numerical ice sheet model including full thermo-mechanical coupling |
author_facet |
Huybrechts, Philippe |
author_sort |
Huybrechts, Philippe |
title |
Sensitivity experiments with a numerical ice sheet model including full thermo-mechanical coupling |
title_short |
Sensitivity experiments with a numerical ice sheet model including full thermo-mechanical coupling |
title_full |
Sensitivity experiments with a numerical ice sheet model including full thermo-mechanical coupling |
title_fullStr |
Sensitivity experiments with a numerical ice sheet model including full thermo-mechanical coupling |
title_full_unstemmed |
Sensitivity experiments with a numerical ice sheet model including full thermo-mechanical coupling |
title_sort |
sensitivity experiments with a numerical ice sheet model including full thermo-mechanical coupling |
publishDate |
1987 |
url |
https://epic.awi.de/id/eprint/3912/ https://epic.awi.de/id/eprint/3912/1/Huy1987a.pdf https://hdl.handle.net/10013/epic.14488 https://hdl.handle.net/10013/epic.14488.d001 |
genre |
Antarc* Antarctic ice core Ice Sheet |
genre_facet |
Antarc* Antarctic ice core Ice Sheet |
op_source |
EPIC3Proceedings of the Belgian National Colloquium on Antarctic Research, pp. 226-239 |
op_relation |
https://epic.awi.de/id/eprint/3912/1/Huy1987a.pdf https://hdl.handle.net/10013/epic.14488.d001 Huybrechts, P. (1987) Sensitivity experiments with a numerical ice sheet model including full thermo-mechanical coupling , Proceedings of the Belgian National Colloquium on Antarctic Research . hdl:10013/epic.14488 |
_version_ |
1810495643377991680 |