Between the devil and the deep blue sea: the role of the Amundsen Sea continental shelf in exchanges between ocean and ice shelves

• Published in: Oceanography
• Main Authors: Heywood, Karen J., Biddle, Louise C., Boehme, Lars, Dutrieux, Pierre, Fedak, Michael, Jenkins, Adrian, Jones, Richard W., Kaiser, Jan, Mallett, Helen, Naveira Garabato, Alberto C., Renfrew, Ian A., Stevens, David P., Webber, Benjamin G.M.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Oceanography Society 2016
• Subjects: Antarctic; Southern Ocean; The Antarctic; Amundsen Sea; Antarc*; Antarctica; Ice Sheet; Ice Shelves; Sea ice
• Online Access: http://nora.nerc.ac.uk/id/eprint/515624/; https://nora.nerc.ac.uk/id/eprint/515624/1/29-4_heywood.pdf; https://doi.org/10.5670/oceanog.2016.104

The Amundsen Sea is a key region of Antarctica where ocean, atmosphere, sea ice, and ice sheet interact. For much of Antarctica, the relatively warm water of the open Southern Ocean (a few degrees above freezing) does not reach the Antarctic continental shelf in large volumes under current climate conditions. However, in the Amundsen Sea, warm water penetrates onto the continental shelf and provides heat that can melt the underside of the area’s floating ice shelves, thinning them. Here, we discuss how the ocean’s role in melting has come under increased scrutiny, present 2014 observations from the Amundsen Sea, and discuss their implications, highlighting aspects where understanding is still incomplete.