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Intrusion of Circumpolar Deep Water over the continental shelf in the central Amundsen Sea.

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Title
Intrusion of Circumpolar Deep Water over the continental shelf in the central Amundsen Sea.
Other Titles
아문젠해역으로 유입되는 남극순환류.
Authors
Kim, Tae-Wan
A. Wahlin
K.W. Nicholls
Lee, Sang H.
Lee, Jae-Hak
Ha, Ho Kyung
Keywords
Amundsen Sea; Circumpolar Deep water
Issue Date
2012
Citation
Kim, Tae-Wan, et al. 2012. Intrusion of Circumpolar Deep Water over the continental shelf in the central Amundsen Sea.. Filchner Ronne Ice Shelf Programme(FRISP). Filchner Ronne Ice Shelf Programme(FRISP). 2012.11.23~.
Abstract
The Amundsen Sea sector is the most rapidly changing region of the Antarctic ice sheets. It has been claimed that the rapid retreat of the glaciers (or ice sheets) is primarily related to the intrusion of warm Circumpolar Deep Water (CDW) which acts as an oceanic heat source. The Amundsen shelf troughs were suspected to be main conduits supplying warm CDW onto the continental shelf, eroding the underside of the ice sheets and glaciers. Despite the critical role of CDW in the continental shelf of the Amundsen Sea, vital information is still lacking concerning the spatial-temporal variability of CDW. This is mainly because the Amundsen Sea is remotely located and the harsh weather and sea conditions limit the access to its inner shelf. This pronounced lack of data hinders the evaluation and prediction of physical processes and associated biogeochemicalprocesses in the Amundsen Sea. Using the icebreaker R/V Araon, three institutes (KOPRI,UGOT and BAS) launched a resource-sharing program for monitoring the distribution of CDW and associated rapid melting of glaciers in the Amundsen Shelf. During the 2012 Amundsen Sea cruise, 52 CTD stations were visited, and a total of 6 moorings were successfully recovered and 15 moorings were newly deployed at the shelf break, troughs and ice shelf front. During the presentation, preliminary data and results archived during the 2012 Araon cruise will be pr) which acts as an oceanic heat source. The Amundsen shelf troughs were suspected to be main conduits supplying warm CDW onto the continental shelf, eroding the underside of the ice sheets and glaciers. Despite the critical role of CDW in the continental shelf of the Amundsen Sea, vital information is still lacking concerning the spatial-temporal variability of CDW. This is mainly because the Amundsen Sea is remotely located and the harsh weather and sea conditions limit the access to its inner shelf. This pronounced lack of data hinders the
URI
http://repository.kopri.re.kr/handle/201206/8390
Conference Name
Filchner Ronne Ice Shelf Programme(FRISP)
Conference Place
Filchner Ronne Ice Shelf Programme(FRISP)
Conference Date
2012.11.23~
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