Thermomechanical coupling of ice flow with the bedrock
Two aspects of thermal coupling with bedrock are considered: the coupled time-dependent problem of co-evolving temperatures in lithosphere and ice; and the influence of basal topography on steady temperature distribution within the ice. The nature of the time-dependent coupling is found to depend on...
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International Glaciological Society
2003
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Online Access: | http://nora.nerc.ac.uk/id/eprint/17643/ |
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ftnerc:oai:nora.nerc.ac.uk:17643 2023-05-15T13:29:22+02:00 Thermomechanical coupling of ice flow with the bedrock Hindmarsh, Richard C.A. 2003 http://nora.nerc.ac.uk/id/eprint/17643/ unknown International Glaciological Society Hindmarsh, Richard C.A. orcid:0000-0003-1633-2416 . 2003 Thermomechanical coupling of ice flow with the bedrock. Annals of Glaciology, 37. 390-396. https://doi.org/10.3189/172756403781815988 <https://doi.org/10.3189/172756403781815988> Publication - Article PeerReviewed 2003 ftnerc https://doi.org/10.3189/172756403781815988 2023-02-04T19:31:13Z Two aspects of thermal coupling with bedrock are considered: the coupled time-dependent problem of co-evolving temperatures in lithosphere and ice; and the influence of basal topography on steady temperature distribution within the ice. The nature of the time-dependent coupling is found to depend on the horizontal velocity. As has been suggested, there is a cooling of steady temperatures on bedrock highs, but this is phase-shifted downstream when horizontal velocities increase. This observation may have consequences for geomorphological processes such as plucking and protection. The effect of bedrock channelling on steady temperature is considered. The positive anomaly of basal temperature due to channelling increases as the transverse wavelength decreases, but not monotonically, reaching a plateau when both the wavelengths of the basal topography are around 100 km. Article in Journal/Newspaper Annals of Glaciology Natural Environment Research Council: NERC Open Research Archive Annals of Glaciology 37 390 396 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
unknown |
description |
Two aspects of thermal coupling with bedrock are considered: the coupled time-dependent problem of co-evolving temperatures in lithosphere and ice; and the influence of basal topography on steady temperature distribution within the ice. The nature of the time-dependent coupling is found to depend on the horizontal velocity. As has been suggested, there is a cooling of steady temperatures on bedrock highs, but this is phase-shifted downstream when horizontal velocities increase. This observation may have consequences for geomorphological processes such as plucking and protection. The effect of bedrock channelling on steady temperature is considered. The positive anomaly of basal temperature due to channelling increases as the transverse wavelength decreases, but not monotonically, reaching a plateau when both the wavelengths of the basal topography are around 100 km. |
format |
Article in Journal/Newspaper |
author |
Hindmarsh, Richard C.A. |
spellingShingle |
Hindmarsh, Richard C.A. Thermomechanical coupling of ice flow with the bedrock |
author_facet |
Hindmarsh, Richard C.A. |
author_sort |
Hindmarsh, Richard C.A. |
title |
Thermomechanical coupling of ice flow with the bedrock |
title_short |
Thermomechanical coupling of ice flow with the bedrock |
title_full |
Thermomechanical coupling of ice flow with the bedrock |
title_fullStr |
Thermomechanical coupling of ice flow with the bedrock |
title_full_unstemmed |
Thermomechanical coupling of ice flow with the bedrock |
title_sort |
thermomechanical coupling of ice flow with the bedrock |
publisher |
International Glaciological Society |
publishDate |
2003 |
url |
http://nora.nerc.ac.uk/id/eprint/17643/ |
genre |
Annals of Glaciology |
genre_facet |
Annals of Glaciology |
op_relation |
Hindmarsh, Richard C.A. orcid:0000-0003-1633-2416 . 2003 Thermomechanical coupling of ice flow with the bedrock. Annals of Glaciology, 37. 390-396. https://doi.org/10.3189/172756403781815988 <https://doi.org/10.3189/172756403781815988> |
op_doi |
https://doi.org/10.3189/172756403781815988 |
container_title |
Annals of Glaciology |
container_volume |
37 |
container_start_page |
390 |
op_container_end_page |
396 |
_version_ |
1766000163933913088 |