Structure and variability of fronts in the South Indian Ocean along sections from Zhongshan Station to Fremantle

GAO Guo-ping; HAN Shu-zong; DONG Zhao-qian; YANG Shi-ying

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GAO Guo-ping, HAN Shu-zong, DONG Zhao-qian, YANG Shi-ying. Structure and variability of fronts in the South Indian Ocean along sections from Zhongshan Station to Fremantle[J]. Haiyang Xuebao, 2003, 25(6): 9-19.

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Structure and variability of fronts in the South Indian Ocean along sections from Zhongshan Station to Fremantle

1.
Department of Oceanography, Ocean University of China, Qingdao 266003, China;First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
2.
Department of Oceanography, Ocean University of China, Qingdao 266003, China
3.
Polar Institute of China, Shanghai, 200129 China
4.
Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China

Received Date: 2002-10-23
Rev Recd Date: 2003-06-30

Abstract

Abstract

Structure and variability of the fronts along the sections from Zhongshan Station to Fremantle, Australia in the South Indian Ocean are analyzed with XBT/XCTD data and CTD data obtained by CHINARE in 1998, 1999, 2000 and 2002.(1) The Antarctic Slope Front at 75°~78°E is bordered between 64.5° and 65.5°S, the Polar Front at 84°~100°E varies closed to 53.5°~54.3°S, the Subtropical Front at 96°~103°E varies between 46°~47.0°S, the Subtropical Front at 110°E is located on 37.2~38.0°S; (2) in the Polar Front Zone, the isolines fluctuate strongly in temperature and salinity sections and are effected possibly by eddies; (3) north to the Subantarctic Front, the distribution of temperature salinity is homogenous in vertical direction; (4) the Polar Front retreats about one degree southward in latitude in recent four years, compared with that in 1979, 1991 and 1992 in the same area and season.
- the South Indian Ocean,
- CWB,
- PF,
- SAF,
- STF,
- CHINARE

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