Penetration Depth of Closely Spaced Water-free Crevasses
Abstract An approximate, analytic solution is found for the profile of a water-free crevasse in a field of closely spaced crevasses. The depth of penetration of the crevasses into the glacier is found. If the fracture strength of ice is taken to be zero, the penetration depth is equal to the value f...
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Language: | English |
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Cambridge University Press (CUP)
1977
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Online Access: | http://dx.doi.org/10.1017/s0022143000021493 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000021493 |
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crcambridgeupr:10.1017/s0022143000021493 2024-03-03T08:45:58+00:00 Penetration Depth of Closely Spaced Water-free Crevasses Weertman, J. 1977 http://dx.doi.org/10.1017/s0022143000021493 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000021493 en eng Cambridge University Press (CUP) Journal of Glaciology volume 18, issue 78, page 37-46 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1977 crcambridgeupr https://doi.org/10.1017/s0022143000021493 2024-02-08T08:37:11Z Abstract An approximate, analytic solution is found for the profile of a water-free crevasse in a field of closely spaced crevasses. The depth of penetration of the crevasses into the glacier is found. If the fracture strength of ice is taken to be zero, the penetration depth is equal to the value found by Nye and is independent of the crevasse spacing. This conclusion is in disagreement with results reported recently by R.A. Smith. If the fracture strength of ice is taken to be finite, the penetration depth is reduced if the spacing between crevasses is reduced. The results of the analysis can be applied to other crack problems. In particular, it can be applied to thermal, secondary cracking that it is hoped occurs when cooling fluid flows through the cracks created by hydraulic fracture for the purpose of extracting geothermal heat from hot, dry rock masses. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 18 78 37 46 |
institution |
Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Weertman, J. Penetration Depth of Closely Spaced Water-free Crevasses |
topic_facet |
Earth-Surface Processes |
description |
Abstract An approximate, analytic solution is found for the profile of a water-free crevasse in a field of closely spaced crevasses. The depth of penetration of the crevasses into the glacier is found. If the fracture strength of ice is taken to be zero, the penetration depth is equal to the value found by Nye and is independent of the crevasse spacing. This conclusion is in disagreement with results reported recently by R.A. Smith. If the fracture strength of ice is taken to be finite, the penetration depth is reduced if the spacing between crevasses is reduced. The results of the analysis can be applied to other crack problems. In particular, it can be applied to thermal, secondary cracking that it is hoped occurs when cooling fluid flows through the cracks created by hydraulic fracture for the purpose of extracting geothermal heat from hot, dry rock masses. |
format |
Article in Journal/Newspaper |
author |
Weertman, J. |
author_facet |
Weertman, J. |
author_sort |
Weertman, J. |
title |
Penetration Depth of Closely Spaced Water-free Crevasses |
title_short |
Penetration Depth of Closely Spaced Water-free Crevasses |
title_full |
Penetration Depth of Closely Spaced Water-free Crevasses |
title_fullStr |
Penetration Depth of Closely Spaced Water-free Crevasses |
title_full_unstemmed |
Penetration Depth of Closely Spaced Water-free Crevasses |
title_sort |
penetration depth of closely spaced water-free crevasses |
publisher |
Cambridge University Press (CUP) |
publishDate |
1977 |
url |
http://dx.doi.org/10.1017/s0022143000021493 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000021493 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 18, issue 78, page 37-46 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000021493 |
container_title |
Journal of Glaciology |
container_volume |
18 |
container_issue |
78 |
container_start_page |
37 |
op_container_end_page |
46 |
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1792501704341585920 |