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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Published in:Journal of Glaciology
Main Author: Shumskiy, P. A.
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 1960
Subjects:
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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spelling 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
container_volume 3
container_issue 27
container_start_page 568
op_container_end_page 573
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