Mesoscale observation in the northeast South China Sea during winter 2009-2010

LIU Changjian; ZHUANG Wei; XIA Huayong; DU Yan

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LIU Changjian, ZHUANG Wei, XIA Huayong, DU Yan. Mesoscale observation in the northeast South China Sea during winter 2009-2010[J]. Haiyang Xuebao, 2012, 34(1): 8-16.

Citation:

LIU Changjian, ZHUANG Wei, XIA Huayong, DU Yan. Mesoscale observation in the northeast South China Sea during winter 2009-2010[J]. Haiyang Xuebao, 2012, 34(1): 8-16.

LIU Changjian, ZHUANG Wei, XIA Huayong, DU Yan. Mesoscale observation in the northeast South China Sea during winter 2009-2010[J]. Haiyang Xuebao, 2012, 34(1): 8-16.

Citation:

LIU Changjian, ZHUANG Wei, XIA Huayong, DU Yan. Mesoscale observation in the northeast South China Sea during winter 2009-2010[J]. Haiyang Xuebao, 2012, 34(1): 8-16.

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Mesoscale observation in the northeast South China Sea during winter 2009-2010

1.
State Key Laboratory of Tropical Oceanography(LTO), South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China;South China Sea Engineering Surveying Center, State Ocean Administration, Guangzhou 510300, China
2.
State Key Laboratory of Tropical Oceanography(LTO), South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou 510301, China
3.
South China Sea Engineering Surveying Center, State Ocean Administration, Guangzhou 510300, China

Received Date: 2010-08-10
Rev Recd Date: 2010-12-06

Abstract

Abstract

According to the obtained CTD data of northern South China Sea (SCS) shelf and slope area during the winter cruise in 2009-2010, it found that the northwest pacific water intruded into SCS in the upper layer through Luzon Strait, its effect on tempearture and salinity of northeastern SCS upper layer water decreased from east to west and extended up to about 114°E. Due to the effect of anticyclone eddy in the northeastern SCS during intrusion processing, the vertical and horizontal structure of water mass changed remarkably, especially in the center erea of eddy, the depth of mixed layer and salinity maximum layer is evidently deeper than the surrounding area. The warm eddy was confirmed from the geostrophic current, ADCP current and satellite altimeter data. The existence of warm eddy also affacted the spacial diffusion of chemistry elements markedly. Due to the water convergency caused by warm eddy, the upper layer water with higher concentration dissolved oxygen was transported downwards which induced higher concentration dissolved oxygen existing in the center of warm eddy in upper layer.
- northeast South China Sea,
- water mass properties,
- warm eddy,
- dissolved oxygen

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References(24)

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