The Constitution of Valley Glaciers
Ice streams composing a compound valley glacier may be juxtaposed, inset or superimposed, and Demorest’s concepts of ice flowage provide a plausible explanation for these relations. If valley floors are accordant, juxtaposition results because the waxing force of gravity and obstructed gravity flow...
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International Glaciological Society
1948
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Online Access: | https://authors.library.caltech.edu/113271/ https://authors.library.caltech.edu/113271/1/constitution_of_valley_glaciers.pdf https://resolver.caltech.edu/CaltechAUTHORS:20220204-6241600 |
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ftcaltechauth:oai:authors.library.caltech.edu:113271 2023-05-15T16:57:32+02:00 The Constitution of Valley Glaciers Sharp, Robert P. 1948 application/pdf https://authors.library.caltech.edu/113271/ https://authors.library.caltech.edu/113271/1/constitution_of_valley_glaciers.pdf https://resolver.caltech.edu/CaltechAUTHORS:20220204-6241600 en eng International Glaciological Society https://authors.library.caltech.edu/113271/1/constitution_of_valley_glaciers.pdf Sharp, Robert P. (1948) The Constitution of Valley Glaciers. Journal of Glaciology, 1 (4). pp. 182-189. ISSN 0022-1430. doi:10.3189/s0022143000008042. https://resolver.caltech.edu/CaltechAUTHORS:20220204-6241600 <https://resolver.caltech.edu/CaltechAUTHORS:20220204-6241600> other Article PeerReviewed 1948 ftcaltechauth https://doi.org/10.3189/s0022143000008042 2022-02-10T18:44:46Z Ice streams composing a compound valley glacier may be juxtaposed, inset or superimposed, and Demorest’s concepts of ice flowage provide a plausible explanation for these relations. If valley floors are accordant, juxtaposition results because the waxing force of gravity and obstructed gravity flow in the tributary glacier overcomes the waning force of obstructed extrusion flow from the trunk glacier enabling the tributary to force its way into a juxtaposed position with the trunk glacier in the main valley. If discordance in valley floors is less than the thickness of the trunk glacier, an insert position develops by the same mechanism. If the discordance is greater than the thickness of the trunk glacier, superimposition results. Locally, superimposed or inset relations may be established by exceptionally rapid advances, even with accordant valley floors, but any superimposed ice stream shortly becomes inset by sinking into the underlying ice, at least in temperate glaciers. Article in Journal/Newspaper Journal of Glaciology Caltech Authors (California Institute of Technology) Journal of Glaciology 1 4 182 189 |
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Caltech Authors (California Institute of Technology) |
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English |
description |
Ice streams composing a compound valley glacier may be juxtaposed, inset or superimposed, and Demorest’s concepts of ice flowage provide a plausible explanation for these relations. If valley floors are accordant, juxtaposition results because the waxing force of gravity and obstructed gravity flow in the tributary glacier overcomes the waning force of obstructed extrusion flow from the trunk glacier enabling the tributary to force its way into a juxtaposed position with the trunk glacier in the main valley. If discordance in valley floors is less than the thickness of the trunk glacier, an insert position develops by the same mechanism. If the discordance is greater than the thickness of the trunk glacier, superimposition results. Locally, superimposed or inset relations may be established by exceptionally rapid advances, even with accordant valley floors, but any superimposed ice stream shortly becomes inset by sinking into the underlying ice, at least in temperate glaciers. |
format |
Article in Journal/Newspaper |
author |
Sharp, Robert P. |
spellingShingle |
Sharp, Robert P. The Constitution of Valley Glaciers |
author_facet |
Sharp, Robert P. |
author_sort |
Sharp, Robert P. |
title |
The Constitution of Valley Glaciers |
title_short |
The Constitution of Valley Glaciers |
title_full |
The Constitution of Valley Glaciers |
title_fullStr |
The Constitution of Valley Glaciers |
title_full_unstemmed |
The Constitution of Valley Glaciers |
title_sort |
constitution of valley glaciers |
publisher |
International Glaciological Society |
publishDate |
1948 |
url |
https://authors.library.caltech.edu/113271/ https://authors.library.caltech.edu/113271/1/constitution_of_valley_glaciers.pdf https://resolver.caltech.edu/CaltechAUTHORS:20220204-6241600 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_relation |
https://authors.library.caltech.edu/113271/1/constitution_of_valley_glaciers.pdf Sharp, Robert P. (1948) The Constitution of Valley Glaciers. Journal of Glaciology, 1 (4). pp. 182-189. ISSN 0022-1430. doi:10.3189/s0022143000008042. https://resolver.caltech.edu/CaltechAUTHORS:20220204-6241600 <https://resolver.caltech.edu/CaltechAUTHORS:20220204-6241600> |
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other |
op_doi |
https://doi.org/10.3189/s0022143000008042 |
container_title |
Journal of Glaciology |
container_volume |
1 |
container_issue |
4 |
container_start_page |
182 |
op_container_end_page |
189 |
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1766049096331689984 |