Seasonal Surface-Velocity Variations on a Sub-Polar Glacier in West Greenland
Abstract Eight stakes situated in the ablation and the accumulation areas of a sub-polar glacier in West Greenland were surveyed at intervals of 10 days during the summers of 1982 and 1983, The horizontal velocity in both the ablation and the accumulation areas increased distinctly during the short...
Published in: | Journal of Glaciology |
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Language: | English |
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Cambridge University Press (CUP)
1985
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Online Access: | http://dx.doi.org/10.1017/s0022143000006651 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000006651 |
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crcambridgeupr:10.1017/s0022143000006651 2024-03-03T08:44:35+00:00 Seasonal Surface-Velocity Variations on a Sub-Polar Glacier in West Greenland Andreasen, Jørn-Ole 1985 http://dx.doi.org/10.1017/s0022143000006651 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000006651 en eng Cambridge University Press (CUP) Journal of Glaciology volume 31, issue 109, page 319-323 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1985 crcambridgeupr https://doi.org/10.1017/s0022143000006651 2024-02-08T08:34:04Z Abstract Eight stakes situated in the ablation and the accumulation areas of a sub-polar glacier in West Greenland were surveyed at intervals of 10 days during the summers of 1982 and 1983, The horizontal velocity in both the ablation and the accumulation areas increased distinctly during the short summer season. This indicates that melt water reaches the bed and that the glacier is sliding. It is proposed that melt water produced in the ablation area is forced up-glacier through a subglacial water system. The vertical displacement of stakes showed variations indicating an apparent uplift of the glacier during the summer. However, this is interpreted as the result of seasonal variation in atmospheric refraction. Article in Journal/Newspaper glacier Greenland Journal of Glaciology Cambridge University Press Greenland Journal of Glaciology 31 109 319 323 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Andreasen, Jørn-Ole Seasonal Surface-Velocity Variations on a Sub-Polar Glacier in West Greenland |
topic_facet |
Earth-Surface Processes |
description |
Abstract Eight stakes situated in the ablation and the accumulation areas of a sub-polar glacier in West Greenland were surveyed at intervals of 10 days during the summers of 1982 and 1983, The horizontal velocity in both the ablation and the accumulation areas increased distinctly during the short summer season. This indicates that melt water reaches the bed and that the glacier is sliding. It is proposed that melt water produced in the ablation area is forced up-glacier through a subglacial water system. The vertical displacement of stakes showed variations indicating an apparent uplift of the glacier during the summer. However, this is interpreted as the result of seasonal variation in atmospheric refraction. |
format |
Article in Journal/Newspaper |
author |
Andreasen, Jørn-Ole |
author_facet |
Andreasen, Jørn-Ole |
author_sort |
Andreasen, Jørn-Ole |
title |
Seasonal Surface-Velocity Variations on a Sub-Polar Glacier in West Greenland |
title_short |
Seasonal Surface-Velocity Variations on a Sub-Polar Glacier in West Greenland |
title_full |
Seasonal Surface-Velocity Variations on a Sub-Polar Glacier in West Greenland |
title_fullStr |
Seasonal Surface-Velocity Variations on a Sub-Polar Glacier in West Greenland |
title_full_unstemmed |
Seasonal Surface-Velocity Variations on a Sub-Polar Glacier in West Greenland |
title_sort |
seasonal surface-velocity variations on a sub-polar glacier in west greenland |
publisher |
Cambridge University Press (CUP) |
publishDate |
1985 |
url |
http://dx.doi.org/10.1017/s0022143000006651 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000006651 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland Journal of Glaciology |
genre_facet |
glacier Greenland Journal of Glaciology |
op_source |
Journal of Glaciology volume 31, issue 109, page 319-323 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000006651 |
container_title |
Journal of Glaciology |
container_volume |
31 |
container_issue |
109 |
container_start_page |
319 |
op_container_end_page |
323 |
_version_ |
1792500082687344640 |