A Note on the Surface Profile of the Greenland Ice Sheet
Abstract This paper deals with the influence on the surface profile of the Greenland ice sheet, of an accumulation which increases between the ice divide and the coast, and of the thermal softening of the lowermost layers. It is concluded that the form of the surface of the profile measured by E.G.I...
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Language: | English |
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Cambridge University Press (CUP)
1970
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Online Access: | http://dx.doi.org/10.1017/s0022143000026903 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000026903 |
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crcambridgeupr:10.1017/s0022143000026903 2024-03-03T08:44:57+00:00 A Note on the Surface Profile of the Greenland Ice Sheet Philberth, K. Federer, B. 1970 http://dx.doi.org/10.1017/s0022143000026903 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000026903 en eng Cambridge University Press (CUP) Journal of Glaciology volume 9, issue 55, page 150-153 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1970 crcambridgeupr https://doi.org/10.1017/s0022143000026903 2024-02-08T08:40:23Z Abstract This paper deals with the influence on the surface profile of the Greenland ice sheet, of an accumulation which increases between the ice divide and the coast, and of the thermal softening of the lowermost layers. It is concluded that the form of the surface of the profile measured by E.G.I.G. can be described by Glen's law with the exponent n = 3.5. The assumption is made that the bottom differs everywhere from the pressure melting point by a constant amount. This assumption is dropped in the second part of the paper. On the basis of the measured surface profile it is shown that the maximum increase of the bottom temperature is a few degrees within a range of 300 km. In view of the increasing surface temperature and heat of friction towards the outer edge it is concluded that, relatively close to the ice divide, that ice at the bottom must be temperate. Therefore we concluded that friction forces are preventing the ice from slipping on the bedrocks. Article in Journal/Newspaper Greenland Ice Sheet Journal of Glaciology Cambridge University Press Greenland Journal of Glaciology 9 55 150 153 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Philberth, K. Federer, B. A Note on the Surface Profile of the Greenland Ice Sheet |
topic_facet |
Earth-Surface Processes |
description |
Abstract This paper deals with the influence on the surface profile of the Greenland ice sheet, of an accumulation which increases between the ice divide and the coast, and of the thermal softening of the lowermost layers. It is concluded that the form of the surface of the profile measured by E.G.I.G. can be described by Glen's law with the exponent n = 3.5. The assumption is made that the bottom differs everywhere from the pressure melting point by a constant amount. This assumption is dropped in the second part of the paper. On the basis of the measured surface profile it is shown that the maximum increase of the bottom temperature is a few degrees within a range of 300 km. In view of the increasing surface temperature and heat of friction towards the outer edge it is concluded that, relatively close to the ice divide, that ice at the bottom must be temperate. Therefore we concluded that friction forces are preventing the ice from slipping on the bedrocks. |
format |
Article in Journal/Newspaper |
author |
Philberth, K. Federer, B. |
author_facet |
Philberth, K. Federer, B. |
author_sort |
Philberth, K. |
title |
A Note on the Surface Profile of the Greenland Ice Sheet |
title_short |
A Note on the Surface Profile of the Greenland Ice Sheet |
title_full |
A Note on the Surface Profile of the Greenland Ice Sheet |
title_fullStr |
A Note on the Surface Profile of the Greenland Ice Sheet |
title_full_unstemmed |
A Note on the Surface Profile of the Greenland Ice Sheet |
title_sort |
note on the surface profile of the greenland ice sheet |
publisher |
Cambridge University Press (CUP) |
publishDate |
1970 |
url |
http://dx.doi.org/10.1017/s0022143000026903 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000026903 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet Journal of Glaciology |
genre_facet |
Greenland Ice Sheet Journal of Glaciology |
op_source |
Journal of Glaciology volume 9, issue 55, page 150-153 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000026903 |
container_title |
Journal of Glaciology |
container_volume |
9 |
container_issue |
55 |
container_start_page |
150 |
op_container_end_page |
153 |
_version_ |
1792500483784441856 |