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Eddy formation and surface flow field in the Luzon Strait area during the summer of 2009
Liu Ze1; Hou Yijun1; Xie Qiang1; yjhou@qdio.ac.cn
2015
Source PublicationCHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
Volume33Issue:5Pages:1320-1333
AbstractThe formation of mesoscale eddies and the structure of the surface flow field in the Luzon Strait area were examined using in-situ CTD data, Argo float data, and multi-satellite remote sensing data collected from May to August 2009. The results show that vigorous water exchange between Kuroshio water and South China Sea (SCS) water began to emerge over the 200 m water column throughout the strait. Based on an objective definition of surface currents, float A69 tracked an anti-cyclonic eddy southwest of Taiwan Island under a Lagrangian current measurement. The salinity inside the anti-cyclonic eddy was higher than in typical SCS water but lower than in Kuroshio mainstream water, indicating that this eddy was induced by Kuroshio frontal intrusion through the Luzon Strait and into the SCS. From hydrographic data, we propose that continuous horizontal diffusion with high-salinity characteristics in the subsurface layer could extend to 119A degrees E or even further west. The high-temperature filament, large positive sea level anomaly and clockwise geostrophic current all confirmed the existence of this warm eddy in May and June. A strongly negative wind stress curl maintained the eddy until it died. The surface flow field during July and August was rather complicated. Float A83 described an east-west orientated shuttle run in the 20A degrees N section that was not reported by previous studies. At the same time, float A80 indicated a Kuroshio bend into the north-central region of Luzon Strait but it did not cross 120.5A degrees E. The water mass rejoining the Kuroshio mainstream from the southern tip of Taiwan Island was less saline, indicating an entrainment of water from SCS by the Kuroshio bend.
DepartmentLMB
KeywordMesoscale Eddy Surface Flow Field Hydrographic Data Argo Trajectory Argo Profile Luzon Strait
Subject AreaMarine & Freshwater Biology ; Oceanography
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Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/14781
Collection中科院海洋生物资源可持续利用重点实验室
Corresponding Authoryjhou@qdio.ac.cn
Affiliation1.[Liu Ze
2.Hou Yijun] Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China
3.[Liu Ze
4.Xie Qiang] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China
5.[Xie Qiang] Chinese Acad Sci, Sanya Inst Deep Sea Sci & Engn, Sanya 572099, Peoples R China
Recommended Citation
GB/T 7714
Liu Ze,Hou Yijun,Xie Qiang,et al. Eddy formation and surface flow field in the Luzon Strait area during the summer of 2009[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2015,33(5):1320-1333.
APA Liu Ze,Hou Yijun,Xie Qiang,&yjhou@qdio.ac.cn.(2015).Eddy formation and surface flow field in the Luzon Strait area during the summer of 2009.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,33(5),1320-1333.
MLA Liu Ze,et al."Eddy formation and surface flow field in the Luzon Strait area during the summer of 2009".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 33.5(2015):1320-1333.
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