Distribution of Surging Glaciers in Western North America
In western North America 204 surging glaciers have been identified by aerial photographic observations. These glaciers exhibit either intense crevassing and rapid ice displacements during surges or distinctive surface features which have resulted from past surges. Distribution of these unusual glaci...
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Language: | English |
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Cambridge University Press (CUP)
1969
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Online Access: | http://dx.doi.org/10.1017/s0022143000031221 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000031221 |
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crcambridgeupr:10.1017/s0022143000031221 2024-09-15T17:35:37+00:00 Distribution of Surging Glaciers in Western North America Post, Austin 1969 http://dx.doi.org/10.1017/s0022143000031221 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000031221 en eng Cambridge University Press (CUP) Journal of Glaciology volume 8, issue 53, page 229-240 ISSN 0022-1430 1727-5652 journal-article 1969 crcambridgeupr https://doi.org/10.1017/s0022143000031221 2024-08-28T04:03:32Z In western North America 204 surging glaciers have been identified by aerial photographic observations. These glaciers exhibit either intense crevassing and rapid ice displacements during surges or distinctive surface features which have resulted from past surges. Distribution of these unusual glaciers is not random throughout the glacierized areas, as they occur only in the Alaska Range, eastern Wrangell Mountains, eastern Chugach Mountains, Icefield Ranges, and the St Elias Mountains near Yakutat and Glacier Bay. No surging glaciers have been identified in the Brooks Range, Kenai Mountains, west and central Chugach Mountains, west and central Wrangell Mountains, Coast Mountains, Rocky Mountains, Cascade Range, Olympic Mountains, or Sierra Nevada. No definite reason for this restricted distribution is apparent. Surging glaciers are found in maritime to continental and temperate to subpolar environments. Practically all physical forms of glaciers are represented. The restricted distribution does not relate to topography, bedrock type, altitude, orientation, or size of glacier. Some surging glaciers are associated with fault-related valleys, but neither recent faulting nor earthquakes have initiated surge activity. Possible causes for the limited distribution of surges are unusual bedrock roughness or permeability in certain areas, anomalously high ground-water temperatures, and/or abnormal geothermal heat flow. Article in Journal/Newspaper alaska range Brooks Range glacier glaciers Journal of Glaciology Yakutat Alaska Cambridge University Press Journal of Glaciology 8 53 229 240 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
In western North America 204 surging glaciers have been identified by aerial photographic observations. These glaciers exhibit either intense crevassing and rapid ice displacements during surges or distinctive surface features which have resulted from past surges. Distribution of these unusual glaciers is not random throughout the glacierized areas, as they occur only in the Alaska Range, eastern Wrangell Mountains, eastern Chugach Mountains, Icefield Ranges, and the St Elias Mountains near Yakutat and Glacier Bay. No surging glaciers have been identified in the Brooks Range, Kenai Mountains, west and central Chugach Mountains, west and central Wrangell Mountains, Coast Mountains, Rocky Mountains, Cascade Range, Olympic Mountains, or Sierra Nevada. No definite reason for this restricted distribution is apparent. Surging glaciers are found in maritime to continental and temperate to subpolar environments. Practically all physical forms of glaciers are represented. The restricted distribution does not relate to topography, bedrock type, altitude, orientation, or size of glacier. Some surging glaciers are associated with fault-related valleys, but neither recent faulting nor earthquakes have initiated surge activity. Possible causes for the limited distribution of surges are unusual bedrock roughness or permeability in certain areas, anomalously high ground-water temperatures, and/or abnormal geothermal heat flow. |
format |
Article in Journal/Newspaper |
author |
Post, Austin |
spellingShingle |
Post, Austin Distribution of Surging Glaciers in Western North America |
author_facet |
Post, Austin |
author_sort |
Post, Austin |
title |
Distribution of Surging Glaciers in Western North America |
title_short |
Distribution of Surging Glaciers in Western North America |
title_full |
Distribution of Surging Glaciers in Western North America |
title_fullStr |
Distribution of Surging Glaciers in Western North America |
title_full_unstemmed |
Distribution of Surging Glaciers in Western North America |
title_sort |
distribution of surging glaciers in western north america |
publisher |
Cambridge University Press (CUP) |
publishDate |
1969 |
url |
http://dx.doi.org/10.1017/s0022143000031221 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000031221 |
genre |
alaska range Brooks Range glacier glaciers Journal of Glaciology Yakutat Alaska |
genre_facet |
alaska range Brooks Range glacier glaciers Journal of Glaciology Yakutat Alaska |
op_source |
Journal of Glaciology volume 8, issue 53, page 229-240 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000031221 |
container_title |
Journal of Glaciology |
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8 |
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53 |
container_start_page |
229 |
op_container_end_page |
240 |
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1810469529399066624 |