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Oceanographic observations at the Amundsen shelf break

Jenkins, A.; Hayes, D.; Brandon, M.A.; Pozzi-Walker, Z.; Hardy, S.; Banks, C.. 2004 Oceanographic observations at the Amundsen shelf break. Forum for Research into Ice Shelf Processes (FRISP) Report, 15. 17-22.

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Abstract/Summary

Introduction The continental shelf environment of the Amundsen and Bellingshausen seas differs markedly from that of the other circumpolar seas, where water temperatures are close to the surface freezing point throughout. In the Amundsen/Bellingshausen sector near-freezing temperatures are encountered only in the upper few hundred metres of the water column. Below this surface layer a broad thermocline trends towards upper Circumpolar Deep Water (uCDW), which is found in a form that is almost unmodified from its off-shelf manifestation (Giulivi and Jacobs, 1996). This means that the ice shelves of the Amundsen and Bellingshausen seas experience ocean temperatures some three degrees warmer than those experienced by the other Antarctic ice shelves, and the rates of basal melting are correspondingly high (Jacobs et al., 1996).

Item Type: Publication - Article
Programmes: BAS Programmes > Antarctic Science in the Global Context (2000-2005) > Global Interactions of the Antarctic Ice Sheet
NORA Subject Terms: Marine Sciences
Date made live: 18 Jan 2012 15:20
URI: http://nora.nerc.ac.uk/id/eprint/16412

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