Density of Glacier Ice
Abstract The density of glacier ice containing a given amount of air can be computed if it is assumed that both ice and air are subjected to a pressure due to the weight of overlying material. In this way it is possible to deduce the form that a curve of density versus depth should have for ice of a...
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Language: | English |
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Cambridge University Press (CUP)
1960
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Online Access: | http://dx.doi.org/10.1017/s0022143000023686 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000023686 |
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crcambridgeupr:10.1017/s0022143000023686 2024-03-03T08:46:00+00:00 Density of Glacier Ice Shumskiy, P. A. 1960 http://dx.doi.org/10.1017/s0022143000023686 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000023686 en eng Cambridge University Press (CUP) Journal of Glaciology volume 3, issue 27, page 568-573 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1960 crcambridgeupr https://doi.org/10.1017/s0022143000023686 2024-02-08T08:37:11Z Abstract The density of glacier ice containing a given amount of air can be computed if it is assumed that both ice and air are subjected to a pressure due to the weight of overlying material. In this way it is possible to deduce the form that a curve of density versus depth should have for ice of a constant air content. Reasons for the divergence of observed depth-density profiles from those predicted by this theory are discussed, in particular the effect of the plastic-viscous behaviour of ice, which results in an air pressure differing from the hydrostatic pressure of the ice above. The empirical power-law relation between depth and density is discussed in the light of this theory, and is also used to derive relations for useful parameters characterizing the densification process such as rate of subsidence and rate of densification in terms of the depth, accumulation, and the constants entering the power law. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 3 27 568 573 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Shumskiy, P. A. Density of Glacier Ice |
topic_facet |
Earth-Surface Processes |
description |
Abstract The density of glacier ice containing a given amount of air can be computed if it is assumed that both ice and air are subjected to a pressure due to the weight of overlying material. In this way it is possible to deduce the form that a curve of density versus depth should have for ice of a constant air content. Reasons for the divergence of observed depth-density profiles from those predicted by this theory are discussed, in particular the effect of the plastic-viscous behaviour of ice, which results in an air pressure differing from the hydrostatic pressure of the ice above. The empirical power-law relation between depth and density is discussed in the light of this theory, and is also used to derive relations for useful parameters characterizing the densification process such as rate of subsidence and rate of densification in terms of the depth, accumulation, and the constants entering the power law. |
format |
Article in Journal/Newspaper |
author |
Shumskiy, P. A. |
author_facet |
Shumskiy, P. A. |
author_sort |
Shumskiy, P. A. |
title |
Density of Glacier Ice |
title_short |
Density of Glacier Ice |
title_full |
Density of Glacier Ice |
title_fullStr |
Density of Glacier Ice |
title_full_unstemmed |
Density of Glacier Ice |
title_sort |
density of glacier ice |
publisher |
Cambridge University Press (CUP) |
publishDate |
1960 |
url |
http://dx.doi.org/10.1017/s0022143000023686 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000023686 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 3, issue 27, page 568-573 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000023686 |
container_title |
Journal of Glaciology |
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3 |
container_issue |
27 |
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568 |
op_container_end_page |
573 |
_version_ |
1792501769432989696 |