A Model of a Surging Glacier
Abstract As the cause of a surge we assume a sudden improvement of the sliding conditions at the glacier bed. This improvement has the same effect on the behaviour of the glacier as an equivalent variation of the annual balance. We are therefore able to apply Nye’s (1963) theory of the advance and r...
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Language: | English |
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Cambridge University Press (CUP)
1972
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Online Access: | http://dx.doi.org/10.1017/s0022143000022206 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000022206 |
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crcambridgeupr:10.1017/s0022143000022206 2024-03-03T08:45:59+00:00 A Model of a Surging Glacier Brückl, E. 1972 http://dx.doi.org/10.1017/s0022143000022206 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000022206 en eng Cambridge University Press (CUP) Journal of Glaciology volume 11, issue 62, page 215-218 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1972 crcambridgeupr https://doi.org/10.1017/s0022143000022206 2024-02-08T08:41:37Z Abstract As the cause of a surge we assume a sudden improvement of the sliding conditions at the glacier bed. This improvement has the same effect on the behaviour of the glacier as an equivalent variation of the annual balance. We are therefore able to apply Nye’s (1963) theory of the advance and retreat of glaciers to our problem. A simple glacier model discussed in this theory shows as a consequence of an improvement of the sliding conditions, an additional discharge of ice, which can be separated in two phases. The first phase of strong motion yields a transport of ice from the upper to the lower part of the glacier. The ice essentially remains within the previous limits of the glacier. The sequence of motion during this phase corresponds to a surge. The second phase of motion is essentially slower. During this phase the ice accumulated in the lower part of the glacier flows beyond the previous limits, till the whole surface level is lowered. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 11 62 215 218 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Brückl, E. A Model of a Surging Glacier |
topic_facet |
Earth-Surface Processes |
description |
Abstract As the cause of a surge we assume a sudden improvement of the sliding conditions at the glacier bed. This improvement has the same effect on the behaviour of the glacier as an equivalent variation of the annual balance. We are therefore able to apply Nye’s (1963) theory of the advance and retreat of glaciers to our problem. A simple glacier model discussed in this theory shows as a consequence of an improvement of the sliding conditions, an additional discharge of ice, which can be separated in two phases. The first phase of strong motion yields a transport of ice from the upper to the lower part of the glacier. The ice essentially remains within the previous limits of the glacier. The sequence of motion during this phase corresponds to a surge. The second phase of motion is essentially slower. During this phase the ice accumulated in the lower part of the glacier flows beyond the previous limits, till the whole surface level is lowered. |
format |
Article in Journal/Newspaper |
author |
Brückl, E. |
author_facet |
Brückl, E. |
author_sort |
Brückl, E. |
title |
A Model of a Surging Glacier |
title_short |
A Model of a Surging Glacier |
title_full |
A Model of a Surging Glacier |
title_fullStr |
A Model of a Surging Glacier |
title_full_unstemmed |
A Model of a Surging Glacier |
title_sort |
model of a surging glacier |
publisher |
Cambridge University Press (CUP) |
publishDate |
1972 |
url |
http://dx.doi.org/10.1017/s0022143000022206 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000022206 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 11, issue 62, page 215-218 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000022206 |
container_title |
Journal of Glaciology |
container_volume |
11 |
container_issue |
62 |
container_start_page |
215 |
op_container_end_page |
218 |
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1792501764367319040 |