Patterns of calculated basal drag on ice streams B and C, Antarctica
This is the published version. Patterns of strain rate and slope on the ice streams are unusual. They cannot be accounted for in the usual way as due to standing waves in ice flow over a basal obstruction to flow (such as a sticky spot) . The features are studied using the force-budget technique. Th...
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ftunivkansas:oai:kuscholarworks.ku.edu:1808/17344 2023-05-15T13:32:09+02:00 Patterns of calculated basal drag on ice streams B and C, Antarctica Whillans, I. M. van der Veen, Cornelis J. 2015-04-08T20:16:12Z http://hdl.handle.net/1808/17344 unknown International Glaciological Society http://www.igsoc.org:8080/journal/39/133/igs_journal_vol39_issue133_pg437-446.pdf Whillans, I. M. & Van Der Veen, C. J. "Patterns of calculated basal drag on ice streams B and C, Antarctica." Journal of Glaciology. 39, 133. 437-446. http://www.igsoc.org:8080/journal/39/133/igs_journal_vol39_issue133_pg437-446.pdf. http://hdl.handle.net/1808/17344 openAccess Article 2015 ftunivkansas 2022-08-26T13:16:46Z This is the published version. Patterns of strain rate and slope on the ice streams are unusual. They cannot be accounted for in the usual way as due to standing waves in ice flow over a basal obstruction to flow (such as a sticky spot) . The features are studied using the force-budget technique. The conventional flow law is used, together with measurements of surface strain rate and shape of the glacier, to compute basal drag. The results for Ice Stream C are as expected, in that the drag varies from site to site but is directed inland, restraining the flow. The calculated drag at the base of Ice Stream B, on the other hand, is in places such that it acts to propel the glacier forward. This result is untenable. Either the conventional flow law is not applicable to Ice Stream B or there are large spatial variations in ice stiffness, perhaps associated with foliation, or both. Article in Journal/Newspaper Antarc* Antarctica Antarctica Journal Ice Stream B Ice Stream C Journal of Glaciology The University of Kansas: KU ScholarWorks |
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Open Polar |
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The University of Kansas: KU ScholarWorks |
op_collection_id |
ftunivkansas |
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unknown |
description |
This is the published version. Patterns of strain rate and slope on the ice streams are unusual. They cannot be accounted for in the usual way as due to standing waves in ice flow over a basal obstruction to flow (such as a sticky spot) . The features are studied using the force-budget technique. The conventional flow law is used, together with measurements of surface strain rate and shape of the glacier, to compute basal drag. The results for Ice Stream C are as expected, in that the drag varies from site to site but is directed inland, restraining the flow. The calculated drag at the base of Ice Stream B, on the other hand, is in places such that it acts to propel the glacier forward. This result is untenable. Either the conventional flow law is not applicable to Ice Stream B or there are large spatial variations in ice stiffness, perhaps associated with foliation, or both. |
format |
Article in Journal/Newspaper |
author |
Whillans, I. M. van der Veen, Cornelis J. |
spellingShingle |
Whillans, I. M. van der Veen, Cornelis J. Patterns of calculated basal drag on ice streams B and C, Antarctica |
author_facet |
Whillans, I. M. van der Veen, Cornelis J. |
author_sort |
Whillans, I. M. |
title |
Patterns of calculated basal drag on ice streams B and C, Antarctica |
title_short |
Patterns of calculated basal drag on ice streams B and C, Antarctica |
title_full |
Patterns of calculated basal drag on ice streams B and C, Antarctica |
title_fullStr |
Patterns of calculated basal drag on ice streams B and C, Antarctica |
title_full_unstemmed |
Patterns of calculated basal drag on ice streams B and C, Antarctica |
title_sort |
patterns of calculated basal drag on ice streams b and c, antarctica |
publisher |
International Glaciological Society |
publishDate |
2015 |
url |
http://hdl.handle.net/1808/17344 |
genre |
Antarc* Antarctica Antarctica Journal Ice Stream B Ice Stream C Journal of Glaciology |
genre_facet |
Antarc* Antarctica Antarctica Journal Ice Stream B Ice Stream C Journal of Glaciology |
op_relation |
http://www.igsoc.org:8080/journal/39/133/igs_journal_vol39_issue133_pg437-446.pdf Whillans, I. M. & Van Der Veen, C. J. "Patterns of calculated basal drag on ice streams B and C, Antarctica." Journal of Glaciology. 39, 133. 437-446. http://www.igsoc.org:8080/journal/39/133/igs_journal_vol39_issue133_pg437-446.pdf. http://hdl.handle.net/1808/17344 |
op_rights |
openAccess |
_version_ |
1766024605494935552 |