The Sliding Velocity of Athabasca Glacier, Canada
Abstract A method of estimating siding velocity is presented. It rests on few assumptions, one of which is that longitudinal strain-rate varies linearly with depth. The flow law of ice is not used. To apply it, the sliding velocity at one point must be known. The method is used to calculate the slid...
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Language: | English |
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Cambridge University Press (CUP)
1970
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Online Access: | http://dx.doi.org/10.1017/s0022143000026794 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000026794 |
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crcambridgeupr:10.1017/s0022143000026794 2024-09-15T18:08:00+00:00 The Sliding Velocity of Athabasca Glacier, Canada Paterson, W. S. B. 1970 http://dx.doi.org/10.1017/s0022143000026794 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000026794 en eng Cambridge University Press (CUP) Journal of Glaciology volume 9, issue 55, page 55-63 ISSN 0022-1430 1727-5652 journal-article 1970 crcambridgeupr https://doi.org/10.1017/s0022143000026794 2024-08-14T04:04:17Z Abstract A method of estimating siding velocity is presented. It rests on few assumptions, one of which is that longitudinal strain-rate varies linearly with depth. The flow law of ice is not used. To apply it, the sliding velocity at one point must be known. The method is used to calculate the sliding velocity at twelve points on Athabasca Glacier. These values are not related to calculated basal shear stresses. Thus one or more of the following statements must be true: (1) basal shear stress cannot be calculated by the conventional formula, (2) the roughness of the glacier bed varies from place to place, (3) sliding velocity does not obey Weertman's formula. Analysis of seven published measurements of sliding velocity leads to the same conclusion. Article in Journal/Newspaper glacier* Journal of Glaciology Cambridge University Press Journal of Glaciology 9 55 55 63 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract A method of estimating siding velocity is presented. It rests on few assumptions, one of which is that longitudinal strain-rate varies linearly with depth. The flow law of ice is not used. To apply it, the sliding velocity at one point must be known. The method is used to calculate the sliding velocity at twelve points on Athabasca Glacier. These values are not related to calculated basal shear stresses. Thus one or more of the following statements must be true: (1) basal shear stress cannot be calculated by the conventional formula, (2) the roughness of the glacier bed varies from place to place, (3) sliding velocity does not obey Weertman's formula. Analysis of seven published measurements of sliding velocity leads to the same conclusion. |
format |
Article in Journal/Newspaper |
author |
Paterson, W. S. B. |
spellingShingle |
Paterson, W. S. B. The Sliding Velocity of Athabasca Glacier, Canada |
author_facet |
Paterson, W. S. B. |
author_sort |
Paterson, W. S. B. |
title |
The Sliding Velocity of Athabasca Glacier, Canada |
title_short |
The Sliding Velocity of Athabasca Glacier, Canada |
title_full |
The Sliding Velocity of Athabasca Glacier, Canada |
title_fullStr |
The Sliding Velocity of Athabasca Glacier, Canada |
title_full_unstemmed |
The Sliding Velocity of Athabasca Glacier, Canada |
title_sort |
sliding velocity of athabasca glacier, canada |
publisher |
Cambridge University Press (CUP) |
publishDate |
1970 |
url |
http://dx.doi.org/10.1017/s0022143000026794 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000026794 |
genre |
glacier* Journal of Glaciology |
genre_facet |
glacier* Journal of Glaciology |
op_source |
Journal of Glaciology volume 9, issue 55, page 55-63 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000026794 |
container_title |
Journal of Glaciology |
container_volume |
9 |
container_issue |
55 |
container_start_page |
55 |
op_container_end_page |
63 |
_version_ |
1810445352156790784 |