A model study of Luzon cold eddies in the northern South China Sea
He, Yinghui; Cai, Shuqun; Wang, Dongxiao; He, Jianling; caisq@scsio.ac.cn
2015
发表期刊DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
卷号97页码:107-123
摘要A variable-grid global ocean circulation model (MITgcm) was employed to study the effects of wind and Kuroshio intrusion on the Luzon cold eddies (LCEs) in the northern South China Sea (SCS). Study findings showed that there are two cold eddies northwest of the Luzon Island. The cold eddies above 300 m and below 500 m depth are referred to as the upper and lower layer LCE, respectively, based on their different generation sites, properties and dynamic mechanisms in these layers. In this study, the upper layer LCE was mainly induced by the winter wind stress curl in the SCS and generated northwest of the Luzon Island in late November, but it may have been weakened by the Kuroshio intrusion. It moved northwestward and decayed at about (115 degrees E, 20 degrees N) in late June. The center of the upper layer LCE tilted westward with increasing depth until March. The vorticity intensity of the upper layer LCE peaked in December to January and generally decreased with depth. The contributions of both wind stress curl and Kuroshio intrusion to the generation of the lower layer LCE were roughly equal. The lower layer LCE originated from a cold eddy, which moved westward from the Luzon Strait in August through October and then intensified by wind stress curl. Subsequently, it moved westward with a slight southward migration and finally decayed near the Xisha Islands in April to May. Its amplitude and radius reached a maximum around December, while the vorticity intensity peaked in January to February. (C) 2015 Elsevier Ltd. All rights reserved.
部门归属[He, Yinghui; Cai, Shuqun; Wang, Dongxiao; He, Jianling] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China; [He, Jianling] Univ Chinese Acad Sci, Beijing 100049, Peoples R China ; LTO
关键词Luzon Cold Eddy Vertical Structure Eddy Energy Numerical Model South China Sea
学科领域Oceanography
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/15004
专题热带海洋环境国家重点实验室(LTO)
通讯作者caisq@scsio.ac.cn
推荐引用方式
GB/T 7714
He, Yinghui,Cai, Shuqun,Wang, Dongxiao,et al. A model study of Luzon cold eddies in the northern South China Sea[J]. DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,2015,97:107-123.
APA He, Yinghui,Cai, Shuqun,Wang, Dongxiao,He, Jianling,&caisq@scsio.ac.cn.(2015).A model study of Luzon cold eddies in the northern South China Sea.DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,97,107-123.
MLA He, Yinghui,et al."A model study of Luzon cold eddies in the northern South China Sea".DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS 97(2015):107-123.
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