Salinity Variations in Sea Ice
The salinity distribution in multi-year sea ice is dependent on the ice topography and cannot be adequately represented by a single average profile. The cores collected from areas beneath surface hummocks generally showed a systematic increase in salinity with depth from 0‰ at the surface to about 4...
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Language: | English |
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Cambridge University Press (CUP)
1974
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Online Access: | http://dx.doi.org/10.1017/s0022143000023418 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000023418 |
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crcambridgeupr:10.1017/s0022143000023418 2024-09-09T19:23:16+00:00 Salinity Variations in Sea Ice Cox, G. F. N. Weeks, W. F. 1974 http://dx.doi.org/10.1017/s0022143000023418 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000023418 en eng Cambridge University Press (CUP) Journal of Glaciology volume 13, issue 67, page 109-120 ISSN 0022-1430 1727-5652 journal-article 1974 crcambridgeupr https://doi.org/10.1017/s0022143000023418 2024-07-10T04:04:39Z The salinity distribution in multi-year sea ice is dependent on the ice topography and cannot be adequately represented by a single average profile. The cores collected from areas beneath surface hummocks generally showed a systematic increase in salinity with depth from 0‰ at the surface to about 4‰ at the base. The cores collected from areas beneath surface depressions were much more saline and displayed large salinity fluctuations. Salinity observations from sea ice of varying thicknesses and ages collected at various Arctic and sub-Arctic locations revealed a strong correlation between the average salinity of the ice and the ice thickness h. For salinity samples collected from cold sea ice at the end of the growth season, this relationship can be represented by two linear equations: 14.24— 19.39 h ( h ≤ 0.4 m); = 7,88— 1.59 h ( h 0.4m). It is suggested that the pronounced break in slope at 0.4 m is due to a change in the dominant brine drainage mechanism from brine expulsion to gravity drainage. A linear regression for the data collected during the melt season gives = 1.58 + 0.18 h . An annual cyclic variation of the mean salinity exists for multi-year sea ice. The mean salinity reaches a maximum at the end of the growth season and a minimum at the end of the melt season. Article in Journal/Newspaper Arctic Journal of Glaciology Sea ice Cambridge University Press Arctic Journal of Glaciology 13 67 109 120 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
The salinity distribution in multi-year sea ice is dependent on the ice topography and cannot be adequately represented by a single average profile. The cores collected from areas beneath surface hummocks generally showed a systematic increase in salinity with depth from 0‰ at the surface to about 4‰ at the base. The cores collected from areas beneath surface depressions were much more saline and displayed large salinity fluctuations. Salinity observations from sea ice of varying thicknesses and ages collected at various Arctic and sub-Arctic locations revealed a strong correlation between the average salinity of the ice and the ice thickness h. For salinity samples collected from cold sea ice at the end of the growth season, this relationship can be represented by two linear equations: 14.24— 19.39 h ( h ≤ 0.4 m); = 7,88— 1.59 h ( h 0.4m). It is suggested that the pronounced break in slope at 0.4 m is due to a change in the dominant brine drainage mechanism from brine expulsion to gravity drainage. A linear regression for the data collected during the melt season gives = 1.58 + 0.18 h . An annual cyclic variation of the mean salinity exists for multi-year sea ice. The mean salinity reaches a maximum at the end of the growth season and a minimum at the end of the melt season. |
format |
Article in Journal/Newspaper |
author |
Cox, G. F. N. Weeks, W. F. |
spellingShingle |
Cox, G. F. N. Weeks, W. F. Salinity Variations in Sea Ice |
author_facet |
Cox, G. F. N. Weeks, W. F. |
author_sort |
Cox, G. F. N. |
title |
Salinity Variations in Sea Ice |
title_short |
Salinity Variations in Sea Ice |
title_full |
Salinity Variations in Sea Ice |
title_fullStr |
Salinity Variations in Sea Ice |
title_full_unstemmed |
Salinity Variations in Sea Ice |
title_sort |
salinity variations in sea ice |
publisher |
Cambridge University Press (CUP) |
publishDate |
1974 |
url |
http://dx.doi.org/10.1017/s0022143000023418 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000023418 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Journal of Glaciology Sea ice |
genre_facet |
Arctic Journal of Glaciology Sea ice |
op_source |
Journal of Glaciology volume 13, issue 67, page 109-120 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000023418 |
container_title |
Journal of Glaciology |
container_volume |
13 |
container_issue |
67 |
container_start_page |
109 |
op_container_end_page |
120 |
_version_ |
1809763671058939904 |