Dynamics of calving glaciers: comparison of three models
A minimal model of a tidewater glacier based solely on mass conservation is compared with two one-dimensional numerical flowline models, one with the calving rate proportional to water depth, and the other with the flotation criterion as a boundary condition at the glacier terminus. The models were...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/43689 2023-07-23T04:22:02+02:00 Dynamics of calving glaciers: comparison of three models Nick, F.M. Oerlemans, J. Marine and Atmospheric Research Afd Marine and Atmospheric Research Sub Dynamics Meteorology 2006 text/plain https://dspace.library.uu.nl/handle/1874/43689 other unknown 0022-1430 https://dspace.library.uu.nl/handle/1874/43689 info:eu-repo/semantics/OpenAccess Article 2006 ftunivutrecht 2023-07-01T23:41:36Z A minimal model of a tidewater glacier based solely on mass conservation is compared with two one-dimensional numerical flowline models, one with the calving rate proportional to water depth, and the other with the flotation criterion as a boundary condition at the glacier terminus. The models were run with two simplified bed geometries and two mass-balance formulations. The models simulate the full cycle of length variations and the equilibrium states for a tidewater glacier. This study shows that the branching of the equilibrium states depends significantly on the bed geometry. The similarity between the results of the three models indicates that if there is a submarine undulation at the terminus of a tidewater glacier, any model in which the frontal ice loss is related to the water depth yields qualitatively the same non-linear behaviour. For large glaciers extending into deep water, the flotation model causes unrealistic behaviour. Article in Journal/Newspaper Tidewater Utrecht University Repository |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
unknown |
description |
A minimal model of a tidewater glacier based solely on mass conservation is compared with two one-dimensional numerical flowline models, one with the calving rate proportional to water depth, and the other with the flotation criterion as a boundary condition at the glacier terminus. The models were run with two simplified bed geometries and two mass-balance formulations. The models simulate the full cycle of length variations and the equilibrium states for a tidewater glacier. This study shows that the branching of the equilibrium states depends significantly on the bed geometry. The similarity between the results of the three models indicates that if there is a submarine undulation at the terminus of a tidewater glacier, any model in which the frontal ice loss is related to the water depth yields qualitatively the same non-linear behaviour. For large glaciers extending into deep water, the flotation model causes unrealistic behaviour. |
author2 |
Marine and Atmospheric Research Afd Marine and Atmospheric Research Sub Dynamics Meteorology |
format |
Article in Journal/Newspaper |
author |
Nick, F.M. Oerlemans, J. |
spellingShingle |
Nick, F.M. Oerlemans, J. Dynamics of calving glaciers: comparison of three models |
author_facet |
Nick, F.M. Oerlemans, J. |
author_sort |
Nick, F.M. |
title |
Dynamics of calving glaciers: comparison of three models |
title_short |
Dynamics of calving glaciers: comparison of three models |
title_full |
Dynamics of calving glaciers: comparison of three models |
title_fullStr |
Dynamics of calving glaciers: comparison of three models |
title_full_unstemmed |
Dynamics of calving glaciers: comparison of three models |
title_sort |
dynamics of calving glaciers: comparison of three models |
publishDate |
2006 |
url |
https://dspace.library.uu.nl/handle/1874/43689 |
genre |
Tidewater |
genre_facet |
Tidewater |
op_relation |
0022-1430 https://dspace.library.uu.nl/handle/1874/43689 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1772188531871973376 |