Seasonal hydrography on the southern Weddell Sea continental shelf using seal tags
To capture the austral summer to winter transition in water mass properties over the southern Weddell Sea continental shelf and slope region, 19 Weddell seals were tagged with miniaturized conductivity–temperature–depth sensors in February 2011. During the following 8 months the instruments yielded...
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Online Access: | https://risweb.st-andrews.ac.uk/portal/en/researchoutput/seasonal-hydrography-on-the-southern-weddell-sea-continental-shelf-using-seal-tags(736bc30e-6754-47a7-9f96-33aafaf641e5).html http://meetingorganizer.copernicus.org/EGU2013/EGU2013-8674.pdf |
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ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/736bc30e-6754-47a7-9f96-33aafaf641e5 2023-05-15T16:41:55+02:00 Seasonal hydrography on the southern Weddell Sea continental shelf using seal tags Arthun, Marius Nicholls, Keith W. Makinson, Keith Fedak, Mike Boehme, Lars 2013 https://risweb.st-andrews.ac.uk/portal/en/researchoutput/seasonal-hydrography-on-the-southern-weddell-sea-continental-shelf-using-seal-tags(736bc30e-6754-47a7-9f96-33aafaf641e5).html http://meetingorganizer.copernicus.org/EGU2013/EGU2013-8674.pdf eng eng info:eu-repo/semantics/restrictedAccess Arthun , M , Nicholls , K W , Makinson , K , Fedak , M & Boehme , L 2013 , ' Seasonal hydrography on the southern Weddell Sea continental shelf using seal tags ' , European Geophysical Union General Assembly , Vienna , Austria , 7/04/13 - 12/04/13 . conferenceObject 2013 ftunstandrewcris 2021-12-26T14:25:05Z To capture the austral summer to winter transition in water mass properties over the southern Weddell Sea continental shelf and slope region, 19 Weddell seals were tagged with miniaturized conductivity–temperature–depth sensors in February 2011. During the following 8 months the instruments yielded about 9000 temperature–salinity profiles from a previously undersampled area, and represents the first comprehensive wintertime hydrographic survey over the southern Weddell Sea continental shelf. This allows, for the first time, a description of the seasonality of warm intrusions onto the shelf, as well as the seasonal change in upper-ocean salinity. The data suggest a persistent inflow of modified Warm Deep Water (MWDW), although substantially weaker during winter. This is also corroborated by results from a mooring deployed at the shelf break between 2007 and 2009. Further south, close to the Filchner Ice Shelf, the seasonal hydrography is dominated by an upper-ocean (0–300 m) salinity increase of 0.31 and the development of a 500 m thick winter mixed layer. No clear seasonality is observed in the properties of the underlying Ice ShelfWater.We find that cross-shelf exchange ofMWDWis related to seasonal changes in wind forcing, while the gradual increase in upper-ocean salinity is interpreted as being representative of the average ice production upstream on the continental shelf. Conference Object Ice Shelf Weddell Sea Weddell Seals University of St Andrews: Research Portal Austral Filchner Ice Shelf ENVELOPE(-40.000,-40.000,-79.000,-79.000) Weddell Weddell Sea |
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Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
description |
To capture the austral summer to winter transition in water mass properties over the southern Weddell Sea continental shelf and slope region, 19 Weddell seals were tagged with miniaturized conductivity–temperature–depth sensors in February 2011. During the following 8 months the instruments yielded about 9000 temperature–salinity profiles from a previously undersampled area, and represents the first comprehensive wintertime hydrographic survey over the southern Weddell Sea continental shelf. This allows, for the first time, a description of the seasonality of warm intrusions onto the shelf, as well as the seasonal change in upper-ocean salinity. The data suggest a persistent inflow of modified Warm Deep Water (MWDW), although substantially weaker during winter. This is also corroborated by results from a mooring deployed at the shelf break between 2007 and 2009. Further south, close to the Filchner Ice Shelf, the seasonal hydrography is dominated by an upper-ocean (0–300 m) salinity increase of 0.31 and the development of a 500 m thick winter mixed layer. No clear seasonality is observed in the properties of the underlying Ice ShelfWater.We find that cross-shelf exchange ofMWDWis related to seasonal changes in wind forcing, while the gradual increase in upper-ocean salinity is interpreted as being representative of the average ice production upstream on the continental shelf. |
format |
Conference Object |
author |
Arthun, Marius Nicholls, Keith W. Makinson, Keith Fedak, Mike Boehme, Lars |
spellingShingle |
Arthun, Marius Nicholls, Keith W. Makinson, Keith Fedak, Mike Boehme, Lars Seasonal hydrography on the southern Weddell Sea continental shelf using seal tags |
author_facet |
Arthun, Marius Nicholls, Keith W. Makinson, Keith Fedak, Mike Boehme, Lars |
author_sort |
Arthun, Marius |
title |
Seasonal hydrography on the southern Weddell Sea continental shelf using seal tags |
title_short |
Seasonal hydrography on the southern Weddell Sea continental shelf using seal tags |
title_full |
Seasonal hydrography on the southern Weddell Sea continental shelf using seal tags |
title_fullStr |
Seasonal hydrography on the southern Weddell Sea continental shelf using seal tags |
title_full_unstemmed |
Seasonal hydrography on the southern Weddell Sea continental shelf using seal tags |
title_sort |
seasonal hydrography on the southern weddell sea continental shelf using seal tags |
publishDate |
2013 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/seasonal-hydrography-on-the-southern-weddell-sea-continental-shelf-using-seal-tags(736bc30e-6754-47a7-9f96-33aafaf641e5).html http://meetingorganizer.copernicus.org/EGU2013/EGU2013-8674.pdf |
long_lat |
ENVELOPE(-40.000,-40.000,-79.000,-79.000) |
geographic |
Austral Filchner Ice Shelf Weddell Weddell Sea |
geographic_facet |
Austral Filchner Ice Shelf Weddell Weddell Sea |
genre |
Ice Shelf Weddell Sea Weddell Seals |
genre_facet |
Ice Shelf Weddell Sea Weddell Seals |
op_source |
Arthun , M , Nicholls , K W , Makinson , K , Fedak , M & Boehme , L 2013 , ' Seasonal hydrography on the southern Weddell Sea continental shelf using seal tags ' , European Geophysical Union General Assembly , Vienna , Austria , 7/04/13 - 12/04/13 . |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1766032381563633664 |