A Contribution to the Study of the Glacier Grain
Abstract The melting of glacier ice always begins at the surface of the glacier grains. A mass of glacier ice at a temperature near its melting point is therefore an aggregate of crystals separated by a film of liquid. The electrical conductivity of ice subjected to differential melting differs cons...
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Language: | English |
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Cambridge University Press (CUP)
1949
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Online Access: | http://dx.doi.org/10.1017/s0022143000010078 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000010078 |
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crcambridgeupr:10.1017/s0022143000010078 2024-03-03T08:45:58+00:00 A Contribution to the Study of the Glacier Grain Renaud, André 1949 http://dx.doi.org/10.1017/s0022143000010078 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000010078 en eng Cambridge University Press (CUP) Journal of Glaciology volume 1, issue 06, page 320-324 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1949 crcambridgeupr https://doi.org/10.1017/s0022143000010078 2024-02-08T08:34:04Z Abstract The melting of glacier ice always begins at the surface of the glacier grains. A mass of glacier ice at a temperature near its melting point is therefore an aggregate of crystals separated by a film of liquid. The electrical conductivity of ice subjected to differential melting differs considerably according to whether the fractions come from the grain surfaces or from the crystal centres, being much the higher in the former case. It is concluded therefore that the glacier grain consists of a crystal of pure ice with a surrounding film of brine, thus verifying the hypotheses of Buchanan and of Quincke on the formation of natural and artificial ice. The growth of the grain is facilitated by the elimination of the saline skin between neighbouring crystals, the resulting coalescence having the character of autogenous welding. On the other hand, the intergranular film of liquid may act as a lubricant in the as yet inadequately explained mechanism of glacier flow. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 1 06 320 324 |
institution |
Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Renaud, André A Contribution to the Study of the Glacier Grain |
topic_facet |
Earth-Surface Processes |
description |
Abstract The melting of glacier ice always begins at the surface of the glacier grains. A mass of glacier ice at a temperature near its melting point is therefore an aggregate of crystals separated by a film of liquid. The electrical conductivity of ice subjected to differential melting differs considerably according to whether the fractions come from the grain surfaces or from the crystal centres, being much the higher in the former case. It is concluded therefore that the glacier grain consists of a crystal of pure ice with a surrounding film of brine, thus verifying the hypotheses of Buchanan and of Quincke on the formation of natural and artificial ice. The growth of the grain is facilitated by the elimination of the saline skin between neighbouring crystals, the resulting coalescence having the character of autogenous welding. On the other hand, the intergranular film of liquid may act as a lubricant in the as yet inadequately explained mechanism of glacier flow. |
format |
Article in Journal/Newspaper |
author |
Renaud, André |
author_facet |
Renaud, André |
author_sort |
Renaud, André |
title |
A Contribution to the Study of the Glacier Grain |
title_short |
A Contribution to the Study of the Glacier Grain |
title_full |
A Contribution to the Study of the Glacier Grain |
title_fullStr |
A Contribution to the Study of the Glacier Grain |
title_full_unstemmed |
A Contribution to the Study of the Glacier Grain |
title_sort |
contribution to the study of the glacier grain |
publisher |
Cambridge University Press (CUP) |
publishDate |
1949 |
url |
http://dx.doi.org/10.1017/s0022143000010078 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000010078 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 1, issue 06, page 320-324 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000010078 |
container_title |
Journal of Glaciology |
container_volume |
1 |
container_issue |
06 |
container_start_page |
320 |
op_container_end_page |
324 |
_version_ |
1792501723402600448 |