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Effects of mesoscale eddies on the variation of water exchange through the Kerama Gap
Zhou, Wen-Zheng1,2; Yu, Fei1,2,3; Nan, Feng1; Liu, Yan-Song1
2018-06-01
Source PublicationJOURNAL OF OCEANOGRAPHY
ISSN0916-8370
Volume74Issue:3Pages:263-275
Corresponding AuthorYu, Fei(yuf@qdio.ac.cn)
AbstractThe Kerama Gap is an important passage for water exchange between the East China Sea (ECS) and the northwestern Pacific (NP). The mean Kerama Gap transport (KGT) is small into the ECS ( 2.0 Sv) but with a large standard deviation ( 4.5 Sv), which has a significant influence on the variation of Kuroshio transport. The effects of mesoscale eddies on the variation of KGT are investigated by using a 25-year Pacific Hybrid Coordinate Ocean Model from 1979 to 2003. Model results show that the variation of KGT is mainly determined by the variation of sea level difference between the northeast and southwest of the Kerama Gap, and these differences are dominated by the westward propagating mesoscale eddies. The effects of mesoscale eddies depend on the meridional location of these eddies. When the anticyclonic (cyclonic) eddy is located in the northeast of the Kerama Gap or the cyclonic (anticyclonic) eddy is located in the southwest of the Kerama Gap, the KGT shows a strong positive (negative) anomaly. However, when the eddy is located in the central region of the Kerama Gap, the KGT shows a relatively smaller anomaly. Besides, the variation of Kuroshio, strongly influenced by the eddies east of Taiwan, also plays an important role in influencing the variation of KGT. When the Kuroshio transport crossing the upstream section of the Kerama Gap is high (low) or the Kuroshio central position shifts to (away from) the Kerama Gap there will be more (less) water flow from the ECS to the NP.
KeywordKerama Gap Kuroshio Ryukyu Current System Mesoscale eddy Pacific HYCOM
DOI10.1007/s10872-017-0456-7
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41676005] ; National Program on Global Climate Change and Air-Sea Interaction[GASI-IPOVAI-01-06] ; CAS Interdisciplinary Innovation Team ; NSFC Innovative Group Grant[41421005] ; NSFC-Shandong Joint Found for Marine Science Research Center[U1406401]
WOS Research AreaOceanography
WOS SubjectOceanography
WOS IDWOS:000432526800002
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/159228
Collection中国科学院海洋研究所
Corresponding AuthorYu, Fei
Affiliation1.Chinese Acad Sci, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Qingdao Natl Lab Marine Sci & Technol, 1 Wenhai Rd, Qingdao 266237, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhou, Wen-Zheng,Yu, Fei,Nan, Feng,et al. Effects of mesoscale eddies on the variation of water exchange through the Kerama Gap[J]. JOURNAL OF OCEANOGRAPHY,2018,74(3):263-275.
APA Zhou, Wen-Zheng,Yu, Fei,Nan, Feng,&Liu, Yan-Song.(2018).Effects of mesoscale eddies on the variation of water exchange through the Kerama Gap.JOURNAL OF OCEANOGRAPHY,74(3),263-275.
MLA Zhou, Wen-Zheng,et al."Effects of mesoscale eddies on the variation of water exchange through the Kerama Gap".JOURNAL OF OCEANOGRAPHY 74.3(2018):263-275.
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