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Wintertime ocean conditions over the southern Weddell Sea continental shelf, Antarctica

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Author(s)

Keith W. Nicholls, Lars Boehme, Erik Martin Biuw, Michael A. Fedak

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Abstract

During the austral winter of 2007 a Weddell Seal tagged with a miniaturized conductivity-temperature-depth (CTD) instrument travelled over the central southern Weddell Sea continental shelf. The instrument yielded 750 CTD profiles, 250 of them to the sea floor. The data show a full depth flow of water onto the shelf via a sill at the shelf break (74 degrees S 44 degrees W). The warmth from the core of the flow was able to maintain the surface mixed layer above the freezing point, resulting in a band of reduced ice-production. An estimate of the on-shelf flux suggests that this flow accounts for most of the estimated 3 Sv of water draining from the southern Weddell Sea continental shelf. Citation: Nicholls, K. W., L. Boehme, M. Biuw, and M. A. Fedak (2008), Wintertime ocean conditions over the southern Weddell Sea continental shelf, Antarctica, Geophys. Res. Lett., 35, L21605, doi: 10.1029/2008GL035742.

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Original languageEnglish
Pages (from-to)L21605
Number of pages5
JournalGeophysical Research Letters
Volume35
Issue number21
DOIs
Publication statusPublished - 11 Nov 2008

    Research areas

  • RONNE ICE SHELF, CIRCULATION, BEHAVIOR

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