Possible source of the antarctic bottom water in the Prydz Bay Region

Authors: Yabuki, Takashi; Suga, Toshio; Hanawa, Kimio; Matsuoka, Koji; Kiwada, Hiroshi; Watanabe, Tomowo

Source: Journal of Oceanography, Volume 62, Number 5, October 2006 , pp. 649-655(7)

Publisher: Springer

Buy & download fulltext article:

OR

Price: $47.00 plus tax (Refund Policy)

Abstract:

It has been inferred that the Prydz Bay region is one of the source regions of Antarctic Bottom Water (AABW) based on rather indirect evidence. In order to examine this inference, we investigate the hydrographic condition of the bay based mainly on XCTD data obtained during the Japanese Whale Research Program in the Antarctic (JARPA). The JARPA hydrographic data reveal Circumpolar Deep Water (CDW), which is a salty, warm water mass approaching the shelf break, and capture Modified CDW (MCDW) intruding into the shelf water. AABW production requires mixing of CDW and cold shelf water saltier than 34.6 psu, which is a saltier type of Low Salinity Shelf Water (LSSW). Saltier LSSW is observed near the bottom over the shelf, being mixed with MCDW. We further identify saltier LSSW near the shelf break. This saltier LSSW appears close enough to unmodified CDW to be mixed with it over the continental slope, indicating a possible source of AABW in Prydz Bay.

Keywords: Amery Basin; Antarctic Bottom Water; Circumpolar Deep Water; Ice Shelf Water; JARPA; Prydz Bay; XCTD; continental shelf; ice shelf

Document Type: Research Article

DOI: http://dx.doi.org/10.1007/s10872-006-0083-1

Affiliations: Email: yabuki@pol.geophys.tohoku.ac.jp

Publication date: October 1, 2006

Related content

Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content

Text size:

A | A | A | A
Share this item with others: These icons link to social bookmarking sites where readers can share and discover new web pages. print icon Print this page