A subglacial water-flow model for West Antarctica
ABSTRACT. The current generation of continental-scale ice-sheet models cannot successfully reproduce the complex ice/water/sediment interactions of the West Antarctic ice sheet (WAIS) in a physically meaningful manner. The potential of a thin-film-based subglacial water-flow model for incorporation...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.429.6824 2023-05-15T13:42:51+02:00 A subglacial water-flow model for West Antarctica A. M. Le Brocq A. J. Payne M. J. Siegert R. B. Alley The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.429.6824 http://www.igsoc.org/journal/55/193/j08j107.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.429.6824 http://www.igsoc.org/journal/55/193/j08j107.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.igsoc.org/journal/55/193/j08j107.pdf text ftciteseerx 2016-01-08T04:32:07Z ABSTRACT. The current generation of continental-scale ice-sheet models cannot successfully reproduce the complex ice/water/sediment interactions of the West Antarctic ice sheet (WAIS) in a physically meaningful manner. The potential of a thin-film-based subglacial water-flow model for incorporation into a continental-scale coupled ice/water flow model of the WAIS is evaluated in this paper. The subglacial water-flow model is applied to the Ross Sea sector of the WAIS, in both a steady-state and timedependent form, to derive the equilibrium water depth for the present-day configuration. The potential for coupling the model to an ice-flow model is then demonstrated, using a variable sliding parameter that is a function of the subglacial water depth. A coupled ice/water flow model, using the parameterization tested in this paper, could have the potential for reproducing the surface elevation, velocity and thermal regime of the WAIS successfully. These requirements are crucial in modelling the evolution of the WAIS, and must be addressed before reliable continental-scale predictive models can be utilized. Text Antarc* Antarctic Antarctica Ice Sheet Ross Sea West Antarctica Unknown Antarctic Ross Sea West Antarctic Ice Sheet West Antarctica |
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ftciteseerx |
language |
English |
description |
ABSTRACT. The current generation of continental-scale ice-sheet models cannot successfully reproduce the complex ice/water/sediment interactions of the West Antarctic ice sheet (WAIS) in a physically meaningful manner. The potential of a thin-film-based subglacial water-flow model for incorporation into a continental-scale coupled ice/water flow model of the WAIS is evaluated in this paper. The subglacial water-flow model is applied to the Ross Sea sector of the WAIS, in both a steady-state and timedependent form, to derive the equilibrium water depth for the present-day configuration. The potential for coupling the model to an ice-flow model is then demonstrated, using a variable sliding parameter that is a function of the subglacial water depth. A coupled ice/water flow model, using the parameterization tested in this paper, could have the potential for reproducing the surface elevation, velocity and thermal regime of the WAIS successfully. These requirements are crucial in modelling the evolution of the WAIS, and must be addressed before reliable continental-scale predictive models can be utilized. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
A. M. Le Brocq A. J. Payne M. J. Siegert R. B. Alley |
spellingShingle |
A. M. Le Brocq A. J. Payne M. J. Siegert R. B. Alley A subglacial water-flow model for West Antarctica |
author_facet |
A. M. Le Brocq A. J. Payne M. J. Siegert R. B. Alley |
author_sort |
A. M. Le Brocq |
title |
A subglacial water-flow model for West Antarctica |
title_short |
A subglacial water-flow model for West Antarctica |
title_full |
A subglacial water-flow model for West Antarctica |
title_fullStr |
A subglacial water-flow model for West Antarctica |
title_full_unstemmed |
A subglacial water-flow model for West Antarctica |
title_sort |
subglacial water-flow model for west antarctica |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.429.6824 http://www.igsoc.org/journal/55/193/j08j107.pdf |
geographic |
Antarctic Ross Sea West Antarctic Ice Sheet West Antarctica |
geographic_facet |
Antarctic Ross Sea West Antarctic Ice Sheet West Antarctica |
genre |
Antarc* Antarctic Antarctica Ice Sheet Ross Sea West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Ross Sea West Antarctica |
op_source |
http://www.igsoc.org/journal/55/193/j08j107.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.429.6824 http://www.igsoc.org/journal/55/193/j08j107.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766173343311986688 |