On the Formulation of Basal Debris Drag for the Case of Sparse Debris
Abstract Two models are presented for the formulation of abrasion and basal drag due to rock–rock friction (debris drag) for the case of sparse debris entrained in the basal layers of a temperate glacier resting on a bedrock bed. The first model is formulated in terms of average basal melting rate,...
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Language: | English |
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Cambridge University Press (CUP)
1988
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Online Access: | http://dx.doi.org/10.1017/s0022143000006985 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000006985 |
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crcambridgeupr:10.1017/s0022143000006985 2024-04-28T08:26:47+00:00 On the Formulation of Basal Debris Drag for the Case of Sparse Debris Snoemaker, E.M. 1988 http://dx.doi.org/10.1017/s0022143000006985 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000006985 en eng Cambridge University Press (CUP) Journal of Glaciology volume 34, issue 118, page 259-264 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1988 crcambridgeupr https://doi.org/10.1017/s0022143000006985 2024-04-09T06:56:17Z Abstract Two models are presented for the formulation of abrasion and basal drag due to rock–rock friction (debris drag) for the case of sparse debris entrained in the basal layers of a temperate glacier resting on a bedrock bed. The first model is formulated in terms of average basal melting rate, v a , and the concentration, C , of basal debris fragments which make intermittent bed contact. The second model is formulated in terms of v n the component of ice velocity normal to the bed flowing around rock fragments contacting the bed, and C c , the concentration of debris actually in contact with the bed. The relationship between the two models is given for the case of a sinusoidal bed. Generalizations are discussed as well as potentially important physical processes which remain to be investigated. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 34 118 259 264 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Snoemaker, E.M. On the Formulation of Basal Debris Drag for the Case of Sparse Debris |
topic_facet |
Earth-Surface Processes |
description |
Abstract Two models are presented for the formulation of abrasion and basal drag due to rock–rock friction (debris drag) for the case of sparse debris entrained in the basal layers of a temperate glacier resting on a bedrock bed. The first model is formulated in terms of average basal melting rate, v a , and the concentration, C , of basal debris fragments which make intermittent bed contact. The second model is formulated in terms of v n the component of ice velocity normal to the bed flowing around rock fragments contacting the bed, and C c , the concentration of debris actually in contact with the bed. The relationship between the two models is given for the case of a sinusoidal bed. Generalizations are discussed as well as potentially important physical processes which remain to be investigated. |
format |
Article in Journal/Newspaper |
author |
Snoemaker, E.M. |
author_facet |
Snoemaker, E.M. |
author_sort |
Snoemaker, E.M. |
title |
On the Formulation of Basal Debris Drag for the Case of Sparse Debris |
title_short |
On the Formulation of Basal Debris Drag for the Case of Sparse Debris |
title_full |
On the Formulation of Basal Debris Drag for the Case of Sparse Debris |
title_fullStr |
On the Formulation of Basal Debris Drag for the Case of Sparse Debris |
title_full_unstemmed |
On the Formulation of Basal Debris Drag for the Case of Sparse Debris |
title_sort |
on the formulation of basal debris drag for the case of sparse debris |
publisher |
Cambridge University Press (CUP) |
publishDate |
1988 |
url |
http://dx.doi.org/10.1017/s0022143000006985 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000006985 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 34, issue 118, page 259-264 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000006985 |
container_title |
Journal of Glaciology |
container_volume |
34 |
container_issue |
118 |
container_start_page |
259 |
op_container_end_page |
264 |
_version_ |
1797586031748317184 |