Evolution and propagation of amesoscale eddy in the northern South China Sea during winter

LIU Changjian; DU Yan; ZHUANG Wei; XIA Huayong; XIE Qiang

doi:10.1007/s13131-013-0325-1

Volume 32 Issue 7

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LIU Changjian, DU Yan, ZHUANG Wei, XIA Huayong, XIE Qiang. Evolution and propagation of amesoscale eddy in the northern South China Sea during winter[J]. Acta Oceanologica Sinica, 2013, 32(7): 1-7. doi: 10.1007/s13131-013-0325-1

Citation:

LIU Changjian, DU Yan, ZHUANG Wei, XIA Huayong, XIE Qiang. Evolution and propagation of amesoscale eddy in the northern South China Sea during winter[J]. Acta Oceanologica Sinica, 2013, 32(7): 1-7. doi: 10.1007/s13131-013-0325-1

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Evolution and propagation of amesoscale eddy in the northern South China Sea during winter

doi: 10.1007/s13131-013-0325-1

1.
State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China;South China Sea Marine Engineering Surveying Center, South China Sea Branch, State Oceanic Administration, Guangzhou 510301, China
2.
State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
3.
South China Sea Marine Engineering Surveying Center, South China Sea Branch, State Oceanic Administration, Guangzhou 510301, China

Received Date: 2012-07-16
Rev Recd Date: 2012-11-26

Abstract

Abstract

In situ observations, satellite data, and the output from an eddy-resolving ocean circulation model were used to study the generations and propagations of an anticyclonic eddy in the northern South China Sea (NSCS) during the winter of 2009-2010. In the NSCS, the anticyclonic eddy firstly appeared to the west of the Luzon Strait,migrated generally along the continental slope and dissipated around the Xisha Archipelago. The evolution of the warmeddy contains three phases: development, maturation, and decay. The eddy mainly stayed near 119.7°E in December and then gradually moved to 118.7°E until January 15, when its intensity, as indicated by the thermocline temperature and salinity anomalies, increased significantly, reflecting the growth of the eddy. The eddy reached its peak on January 15 and persisted until February 23. During this period, the eddy propagated westward to 116.4°E. After, the warm eddy weakened significantly and dissipated finally near the Xisha Archipelago.
- northern South China Sea,
- anticyclonic eddy,
- propagation

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