Seasonal variation in circulation and water mass distribution on the Ross Sea continental shelf
Changes in water mass distribution and horizontal circulation due to seasonal influences on the Ross Sea continental shelf are investigated using a circumpolar numerical model. An anticyclonic circulation cell that extends across the open shelf and into the ice shelf cavity is formed in the model. T...
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Cambridge University Press (CUP)
2003
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Online Access: | http://dx.doi.org/10.1017/s0954102003001007 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102003001007 |
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crcambridgeupr:10.1017/s0954102003001007 2024-09-15T17:49:05+00:00 Seasonal variation in circulation and water mass distribution on the Ross Sea continental shelf ASSMANN, K. HELLMER, H.H. BECKMANN, A. 2003 http://dx.doi.org/10.1017/s0954102003001007 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102003001007 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 15, issue 1, page 3-11 ISSN 0954-1020 1365-2079 journal-article 2003 crcambridgeupr https://doi.org/10.1017/s0954102003001007 2024-07-10T04:03:43Z Changes in water mass distribution and horizontal circulation due to seasonal influences on the Ross Sea continental shelf are investigated using a circumpolar numerical model. An anticyclonic circulation cell that extends across the open shelf and into the ice shelf cavity is formed in the model. The increased east–west density gradient caused by the strong brine release in the Ross Sea polynya in winter results in an intensification of this anticyclonic cell from 1.5 Sv to 2.5 Sv. This supports the concept of a thermohaline-driven horizontal circulation on the Ross Sea continental shelf. In addition to a temporal change in the circulation strength, the changes in the density structure lead to complex temporal and spatial variability in the circulation around Ross Island. Due to seasonal variation in circulation strength and water temperatures, the area averaged basal melt rate of 25 cm a −1 shows a bimodal seasonal cycle ranging from 20–28 cm a −1 , with maxima in March and August. Article in Journal/Newspaper Antarctic Science Ice Shelf Ross Island Ross Sea Cambridge University Press Antarctic Science 15 1 3 11 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Changes in water mass distribution and horizontal circulation due to seasonal influences on the Ross Sea continental shelf are investigated using a circumpolar numerical model. An anticyclonic circulation cell that extends across the open shelf and into the ice shelf cavity is formed in the model. The increased east–west density gradient caused by the strong brine release in the Ross Sea polynya in winter results in an intensification of this anticyclonic cell from 1.5 Sv to 2.5 Sv. This supports the concept of a thermohaline-driven horizontal circulation on the Ross Sea continental shelf. In addition to a temporal change in the circulation strength, the changes in the density structure lead to complex temporal and spatial variability in the circulation around Ross Island. Due to seasonal variation in circulation strength and water temperatures, the area averaged basal melt rate of 25 cm a −1 shows a bimodal seasonal cycle ranging from 20–28 cm a −1 , with maxima in March and August. |
format |
Article in Journal/Newspaper |
author |
ASSMANN, K. HELLMER, H.H. BECKMANN, A. |
spellingShingle |
ASSMANN, K. HELLMER, H.H. BECKMANN, A. Seasonal variation in circulation and water mass distribution on the Ross Sea continental shelf |
author_facet |
ASSMANN, K. HELLMER, H.H. BECKMANN, A. |
author_sort |
ASSMANN, K. |
title |
Seasonal variation in circulation and water mass distribution on the Ross Sea continental shelf |
title_short |
Seasonal variation in circulation and water mass distribution on the Ross Sea continental shelf |
title_full |
Seasonal variation in circulation and water mass distribution on the Ross Sea continental shelf |
title_fullStr |
Seasonal variation in circulation and water mass distribution on the Ross Sea continental shelf |
title_full_unstemmed |
Seasonal variation in circulation and water mass distribution on the Ross Sea continental shelf |
title_sort |
seasonal variation in circulation and water mass distribution on the ross sea continental shelf |
publisher |
Cambridge University Press (CUP) |
publishDate |
2003 |
url |
http://dx.doi.org/10.1017/s0954102003001007 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102003001007 |
genre |
Antarctic Science Ice Shelf Ross Island Ross Sea |
genre_facet |
Antarctic Science Ice Shelf Ross Island Ross Sea |
op_source |
Antarctic Science volume 15, issue 1, page 3-11 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102003001007 |
container_title |
Antarctic Science |
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15 |
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1 |
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3 |
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11 |
_version_ |
1810290791673757696 |