Interannual variability of bottom temperatures in Drake Passage
A continuous 4 year record of in situ bottom temperature measurements at 3690 m within Drake Passage (59°43.7S, 55°29.5W) from November 1992 to November 1996 is presented. The record shows fluctuations of order 0.02°C over monthly periods throughout the 4 years, but the annual mean temperature is th...
Published in: | Journal of Geophysical Research: Oceans |
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Online Access: | https://ueaeprints.uea.ac.uk/id/eprint/31471/ https://doi.org/10.1029/2000JC900114 |
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ftuniveastangl:oai:ueaeprints.uea.ac.uk:31471 2023-05-15T16:02:25+02:00 Interannual variability of bottom temperatures in Drake Passage Rubython, Katie E. Heywood, Karen J. Vassie, John M. 2001 https://ueaeprints.uea.ac.uk/id/eprint/31471/ https://doi.org/10.1029/2000JC900114 unknown Rubython, Katie E., Heywood, Karen J. and Vassie, John M. (2001) Interannual variability of bottom temperatures in Drake Passage. Journal of Geophysical Research, 106 (C2). pp. 2779-2793. ISSN 0148-0227 doi:10.1029/2000JC900114 Article PeerReviewed 2001 ftuniveastangl https://doi.org/10.1029/2000JC900114 2023-03-23T23:31:40Z A continuous 4 year record of in situ bottom temperature measurements at 3690 m within Drake Passage (59°43.7S, 55°29.5W) from November 1992 to November 1996 is presented. The record shows fluctuations of order 0.02°C over monthly periods throughout the 4 years, but the annual mean temperature is the subject under discussion in this work. Between June 1994 and May 1995 the water sampled was of the order of 0.1°C cooler than the water sampled on either side of this time period. This temporal temperature anomaly has only become apparent because of the availability of a continuous data set. Hydrographic data sampled from the same location as part of the World Ocean Circulation Experiment SR1 repeat section provide potential temperature and salinity values that enable the bottom temperature record to be linked to variability in Weddell Sea Deep Water (WSDW). Oxygen isotope measurements demonstrate that the year-long period of cooler WSDW measured in Drake Passage is a signature of Ice Shelf Water in the formation process of deep and bottom waters within the Weddell Sea. Article in Journal/Newspaper Drake Passage Ice Shelf Weddell Sea University of East Anglia: UEA Digital Repository Drake Passage Weddell Weddell Sea Journal of Geophysical Research: Oceans 106 C2 2779 2793 |
institution |
Open Polar |
collection |
University of East Anglia: UEA Digital Repository |
op_collection_id |
ftuniveastangl |
language |
unknown |
description |
A continuous 4 year record of in situ bottom temperature measurements at 3690 m within Drake Passage (59°43.7S, 55°29.5W) from November 1992 to November 1996 is presented. The record shows fluctuations of order 0.02°C over monthly periods throughout the 4 years, but the annual mean temperature is the subject under discussion in this work. Between June 1994 and May 1995 the water sampled was of the order of 0.1°C cooler than the water sampled on either side of this time period. This temporal temperature anomaly has only become apparent because of the availability of a continuous data set. Hydrographic data sampled from the same location as part of the World Ocean Circulation Experiment SR1 repeat section provide potential temperature and salinity values that enable the bottom temperature record to be linked to variability in Weddell Sea Deep Water (WSDW). Oxygen isotope measurements demonstrate that the year-long period of cooler WSDW measured in Drake Passage is a signature of Ice Shelf Water in the formation process of deep and bottom waters within the Weddell Sea. |
format |
Article in Journal/Newspaper |
author |
Rubython, Katie E. Heywood, Karen J. Vassie, John M. |
spellingShingle |
Rubython, Katie E. Heywood, Karen J. Vassie, John M. Interannual variability of bottom temperatures in Drake Passage |
author_facet |
Rubython, Katie E. Heywood, Karen J. Vassie, John M. |
author_sort |
Rubython, Katie E. |
title |
Interannual variability of bottom temperatures in Drake Passage |
title_short |
Interannual variability of bottom temperatures in Drake Passage |
title_full |
Interannual variability of bottom temperatures in Drake Passage |
title_fullStr |
Interannual variability of bottom temperatures in Drake Passage |
title_full_unstemmed |
Interannual variability of bottom temperatures in Drake Passage |
title_sort |
interannual variability of bottom temperatures in drake passage |
publishDate |
2001 |
url |
https://ueaeprints.uea.ac.uk/id/eprint/31471/ https://doi.org/10.1029/2000JC900114 |
geographic |
Drake Passage Weddell Weddell Sea |
geographic_facet |
Drake Passage Weddell Weddell Sea |
genre |
Drake Passage Ice Shelf Weddell Sea |
genre_facet |
Drake Passage Ice Shelf Weddell Sea |
op_relation |
Rubython, Katie E., Heywood, Karen J. and Vassie, John M. (2001) Interannual variability of bottom temperatures in Drake Passage. Journal of Geophysical Research, 106 (C2). pp. 2779-2793. ISSN 0148-0227 doi:10.1029/2000JC900114 |
op_doi |
https://doi.org/10.1029/2000JC900114 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
106 |
container_issue |
C2 |
container_start_page |
2779 |
op_container_end_page |
2793 |
_version_ |
1766398014001250304 |