The Possible Importance of Electrical Forces in the Development of Snow Cornices
Measurements were made of the vertical electric field Strength around snow cornices on Bridger Ridge (2 590 m a.s.l.) in the Bridger Range, South-western Montana. The fields were considerably enhanced, owing to the exposed position of the cornices, but were nevertheless appreciably lower than those...
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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/s0022143000022899 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000022899 |
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crcambridgeupr:10.1017/s0022143000022899 2024-03-03T08:46:02+00:00 The Possible Importance of Electrical Forces in the Development of Snow Cornices Latham, J. Montagne, J. 1970 http://dx.doi.org/10.1017/s0022143000022899 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000022899 en eng Cambridge University Press (CUP) Journal of Glaciology volume 9, issue 57, page 375-384 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1970 crcambridgeupr https://doi.org/10.1017/s0022143000022899 2024-02-08T08:36:15Z Measurements were made of the vertical electric field Strength around snow cornices on Bridger Ridge (2 590 m a.s.l.) in the Bridger Range, South-western Montana. The fields were considerably enhanced, owing to the exposed position of the cornices, but were nevertheless appreciably lower than those shown by Latham and Saunders (1970[b]) to be necessary in order to provide significant additional bonding when ice crystals collide with an ice surface. However, measurements made on Bridger Ridge and neighbouring Bangtail Ridge showed that the charges carried on snow crystals saltating over the surface of cornices were close to their limiting values. Rough calculations indicated that pressure melting is unlikely to be of importance in the development of snow cornices formed from granular crystals, that frictional melting is probably significant only at fairly low temperatures and moderately high wind velocities, and that strong electrostatic forces between highly charged snow crystals saltating over the surface of a cornice may be sufficient to provide bonding where the crystal velocities are comparatively low. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Saunders ENVELOPE(-45.316,-45.316,-60.700,-60.700) Bridger ENVELOPE(-45.850,-45.850,-60.550,-60.550) Journal of Glaciology 9 57 375 384 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Latham, J. Montagne, J. The Possible Importance of Electrical Forces in the Development of Snow Cornices |
topic_facet |
Earth-Surface Processes |
description |
Measurements were made of the vertical electric field Strength around snow cornices on Bridger Ridge (2 590 m a.s.l.) in the Bridger Range, South-western Montana. The fields were considerably enhanced, owing to the exposed position of the cornices, but were nevertheless appreciably lower than those shown by Latham and Saunders (1970[b]) to be necessary in order to provide significant additional bonding when ice crystals collide with an ice surface. However, measurements made on Bridger Ridge and neighbouring Bangtail Ridge showed that the charges carried on snow crystals saltating over the surface of cornices were close to their limiting values. Rough calculations indicated that pressure melting is unlikely to be of importance in the development of snow cornices formed from granular crystals, that frictional melting is probably significant only at fairly low temperatures and moderately high wind velocities, and that strong electrostatic forces between highly charged snow crystals saltating over the surface of a cornice may be sufficient to provide bonding where the crystal velocities are comparatively low. |
format |
Article in Journal/Newspaper |
author |
Latham, J. Montagne, J. |
author_facet |
Latham, J. Montagne, J. |
author_sort |
Latham, J. |
title |
The Possible Importance of Electrical Forces in the Development of Snow Cornices |
title_short |
The Possible Importance of Electrical Forces in the Development of Snow Cornices |
title_full |
The Possible Importance of Electrical Forces in the Development of Snow Cornices |
title_fullStr |
The Possible Importance of Electrical Forces in the Development of Snow Cornices |
title_full_unstemmed |
The Possible Importance of Electrical Forces in the Development of Snow Cornices |
title_sort |
possible importance of electrical forces in the development of snow cornices |
publisher |
Cambridge University Press (CUP) |
publishDate |
1970 |
url |
http://dx.doi.org/10.1017/s0022143000022899 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000022899 |
long_lat |
ENVELOPE(-45.316,-45.316,-60.700,-60.700) ENVELOPE(-45.850,-45.850,-60.550,-60.550) |
geographic |
Saunders Bridger |
geographic_facet |
Saunders Bridger |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 9, issue 57, page 375-384 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000022899 |
container_title |
Journal of Glaciology |
container_volume |
9 |
container_issue |
57 |
container_start_page |
375 |
op_container_end_page |
384 |
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1792501870351089664 |