The Sea Ice Topography of M'Clure Strait in Winter and Summer of 1960 from Submarine Profiles
Submarine profiles of the ice underside in M'Clure Strait were obtained by USS Sargo in February 1960 and by USS Seadragon in August 1960. They gave the first quantitative measurements of the ice draft distribution in the strait and in the nearby Beaufort Sea shelf zone, as well as providing a...
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1984
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ftunivcalgaryojs:oai:journalhosting.ucalgary.ca:article/65228 2023-05-15T14:19:15+02:00 The Sea Ice Topography of M'Clure Strait in Winter and Summer of 1960 from Submarine Profiles McLaren, Alfred S. Wadhams, Peter Weintraub, Ruth 1984-01-01 application/pdf https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65228 eng eng The Arctic Institute of North America https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65228/49142 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65228 ARCTIC; Vol. 37 No. 2 (1984): June: 91–194; 110-120 1923-1245 0004-0843 Measurement Pressure ridges Sea ice Sonar Spatial distribution Thickness M'Clure Strait N.W.T Prince Patrick Island waters Viscount Melville Sound N.W.T./Nunavut info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion research-article 1984 ftunivcalgaryojs 2022-03-22T21:22:19Z Submarine profiles of the ice underside in M'Clure Strait were obtained by USS Sargo in February 1960 and by USS Seadragon in August 1960. They gave the first quantitative measurements of the ice draft distribution in the strait and in the nearby Beaufort Sea shelf zone, as well as providing a seasonal comparison of ice conditions within a single year. Analysis of the profiles reveals a region of very high mean ice draft (7.8 m) and heavy ridging off the southwest tip of Prince Patrick Island in winter. Within M'Clure Strait itself the mean ice draft lay in the 4-5 m range and the draft distribution showed that the ice was mainly first-year, as opposed to the mixture of first-and multi-year ice that exists out in the Beaufort Sea. This suggests a local origin for the ice in the strait. Pressure ridges were much more frequent in summer than in winter, as were polynyas. Both the pressure ridge draft distribution (in summer) and the ice draft distribution at great depths (in summer and winter) fitted a negative exponential distribution, in common with other ice profiles which have been analysed.Key words: sea ice, pressure ridges, sonar, M'Clure Strait, Viscount Melville Sound Mots clés: glace de la mer, crêtes de pression, sonar, le détroit M'Clure, le détroit Viscount Melville Article in Journal/Newspaper Arctic Beaufort Sea M'Clure Strait Nunavut Prince Patrick Island Sea ice Viscount Melville Sound University of Calgary Journal Hosting M'Clure Strait ENVELOPE(-115.999,-115.999,74.498,74.498) Melville Sound ENVELOPE(-107.002,-107.002,68.168,68.168) Nunavut Prince Patrick Island ENVELOPE(-119.507,-119.507,76.751,76.751) Viscount Melville Sound ENVELOPE(-109.836,-109.836,74.046,74.046) ARCTIC 37 2 |
institution |
Open Polar |
collection |
University of Calgary Journal Hosting |
op_collection_id |
ftunivcalgaryojs |
language |
English |
topic |
Measurement Pressure ridges Sea ice Sonar Spatial distribution Thickness M'Clure Strait N.W.T Prince Patrick Island waters Viscount Melville Sound N.W.T./Nunavut |
spellingShingle |
Measurement Pressure ridges Sea ice Sonar Spatial distribution Thickness M'Clure Strait N.W.T Prince Patrick Island waters Viscount Melville Sound N.W.T./Nunavut McLaren, Alfred S. Wadhams, Peter Weintraub, Ruth The Sea Ice Topography of M'Clure Strait in Winter and Summer of 1960 from Submarine Profiles |
topic_facet |
Measurement Pressure ridges Sea ice Sonar Spatial distribution Thickness M'Clure Strait N.W.T Prince Patrick Island waters Viscount Melville Sound N.W.T./Nunavut |
description |
Submarine profiles of the ice underside in M'Clure Strait were obtained by USS Sargo in February 1960 and by USS Seadragon in August 1960. They gave the first quantitative measurements of the ice draft distribution in the strait and in the nearby Beaufort Sea shelf zone, as well as providing a seasonal comparison of ice conditions within a single year. Analysis of the profiles reveals a region of very high mean ice draft (7.8 m) and heavy ridging off the southwest tip of Prince Patrick Island in winter. Within M'Clure Strait itself the mean ice draft lay in the 4-5 m range and the draft distribution showed that the ice was mainly first-year, as opposed to the mixture of first-and multi-year ice that exists out in the Beaufort Sea. This suggests a local origin for the ice in the strait. Pressure ridges were much more frequent in summer than in winter, as were polynyas. Both the pressure ridge draft distribution (in summer) and the ice draft distribution at great depths (in summer and winter) fitted a negative exponential distribution, in common with other ice profiles which have been analysed.Key words: sea ice, pressure ridges, sonar, M'Clure Strait, Viscount Melville Sound Mots clés: glace de la mer, crêtes de pression, sonar, le détroit M'Clure, le détroit Viscount Melville |
format |
Article in Journal/Newspaper |
author |
McLaren, Alfred S. Wadhams, Peter Weintraub, Ruth |
author_facet |
McLaren, Alfred S. Wadhams, Peter Weintraub, Ruth |
author_sort |
McLaren, Alfred S. |
title |
The Sea Ice Topography of M'Clure Strait in Winter and Summer of 1960 from Submarine Profiles |
title_short |
The Sea Ice Topography of M'Clure Strait in Winter and Summer of 1960 from Submarine Profiles |
title_full |
The Sea Ice Topography of M'Clure Strait in Winter and Summer of 1960 from Submarine Profiles |
title_fullStr |
The Sea Ice Topography of M'Clure Strait in Winter and Summer of 1960 from Submarine Profiles |
title_full_unstemmed |
The Sea Ice Topography of M'Clure Strait in Winter and Summer of 1960 from Submarine Profiles |
title_sort |
sea ice topography of m'clure strait in winter and summer of 1960 from submarine profiles |
publisher |
The Arctic Institute of North America |
publishDate |
1984 |
url |
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65228 |
long_lat |
ENVELOPE(-115.999,-115.999,74.498,74.498) ENVELOPE(-107.002,-107.002,68.168,68.168) ENVELOPE(-119.507,-119.507,76.751,76.751) ENVELOPE(-109.836,-109.836,74.046,74.046) |
geographic |
M'Clure Strait Melville Sound Nunavut Prince Patrick Island Viscount Melville Sound |
geographic_facet |
M'Clure Strait Melville Sound Nunavut Prince Patrick Island Viscount Melville Sound |
genre |
Arctic Beaufort Sea M'Clure Strait Nunavut Prince Patrick Island Sea ice Viscount Melville Sound |
genre_facet |
Arctic Beaufort Sea M'Clure Strait Nunavut Prince Patrick Island Sea ice Viscount Melville Sound |
op_source |
ARCTIC; Vol. 37 No. 2 (1984): June: 91–194; 110-120 1923-1245 0004-0843 |
op_relation |
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65228/49142 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65228 |
container_title |
ARCTIC |
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37 |
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2 |
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