IOCAS-IR  > 海洋环流与波动重点实验室
Bidirectional Volume Exchange Between Kuroshio and East China Sea Shelf Water Based on a Whole-Region Passive-Tracing Method
Hu, Fang1; Liu, Yahao2; Xu, Zhenhua3; Yin, Yuqi3; Hou, Yijun3
2020-05-01
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
ISSN2169-9275
Volume125Issue:5Pages:21
Corresponding AuthorLiu, Yahao(yhliu@qdio.ac.cn) ; Hou, Yijun(yjhou@qdio.ac.cn)
AbstractThe Kuroshio intrusion has a profound influence on the marine dynamic and ecological environment in the East China Sea (ECS) shelf. In most previous studies, the intrusion has been evaluated by the volume transport across the 200 m isobath. However, this approximate substitution leads to an underestimation of the Kuroshio intruding flux as it fails to separate the onshore and offshore transport of Kuroshio and shelf water. In this paper, a whole-region passive-tracing modeling method is proposed to quantitatively explore the bidirectional exchange of Kuroshio and shelf water, by introducing the Kuroshio water concentration as a passive tracer into the flux calculations. In terms of the climatological annual mean, the Kuroshio intrusion onto the ECS shelf is as high as 1.85 Sv (1 Sv = 10(6) m(3) s(-1)), with a shelf water outflow rate of 0.42 Sv. The real Kuroshio intruding flux is about 30% higher than the net volume transport across the 200 m isobath (1.43 Sv), which indicates that the influence of the Kuroshio intrusion on the ECS may be far greater than believed before. The volume exchange on the inner shelf of the ECS is also discussed. Analyses of the momentum balances indicate that the exchanges on both the shelf break and the inner shelf are generally dominated by the geostrophic balance, but the exchange on the shelf break is more susceptible to nonlinear effects. The results of a set of sensitivity experiments show that variation of the Kuroshio intrusion is mainly regulated by the combined effect of the Kuroshio transport, the Taiwan Strait current, and the local wind stress. In contrast, the local wind stress has a predominant effect on the outflow of shelf water. Plain Language Summary In this paper, the intruding flux of the Kuroshio water onto the East China Sea shelf is separated from the total cross-shelf break transport and calculated with a whole-region passive-tracing method, revealing a quantity that is approximately 31% higher than those of the traditional net cross-shelf break transport methods. The results of sensitivity experiments show that the variation of the Kuroshio intrusion is mainly regulated by the combined effect of the Kuroshio transport, the Taiwan Strait current, and the local wind stress. In contrast, the local wind stress has a predominant effect on the outflow of shelf water. Key Points A whole-region passive-tracing method is established for calculating the volume flux of water exchange Bidirectional volume exchange between Kuroshio and East China Sea shelf water are quantified separately Key factors affecting Kuroshio and shelf water exchanges are studied through a set of sensitivity experiments
KeywordEast China Sea Kuroshio intrusion transport whole-region passive-tracing method
DOI10.1029/2019JC015528
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41630967] ; National Natural Science Foundation of China[41776020] ; National Natural Science Foundation of China[41476018] ; National Natural Science Foundation of China[91858103] ; National Program on Global Change and Air-Sea Interaction[GASI-IPOVAI-01-06] ; Strategic Pioneering Research Program of CAS[XDA11010204] ; NSFC-Shandong Joint Fund for Marine Science Research Centers[U1606402] ; NSFC Innovative Group Grant[41421005] ; High Performance Computing Center at the IOCAS
WOS Research AreaOceanography
WOS SubjectOceanography
WOS IDWOS:000548601000009
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/167961
Collection海洋环流与波动重点实验室
Corresponding AuthorLiu, Yahao; Hou, Yijun
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Laboratary Ocean Circulat & Waves, CAS, Qingdao, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Qingdao, 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
Hu, Fang,Liu, Yahao,Xu, Zhenhua,et al. Bidirectional Volume Exchange Between Kuroshio and East China Sea Shelf Water Based on a Whole-Region Passive-Tracing Method[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2020,125(5):21.
APA Hu, Fang,Liu, Yahao,Xu, Zhenhua,Yin, Yuqi,&Hou, Yijun.(2020).Bidirectional Volume Exchange Between Kuroshio and East China Sea Shelf Water Based on a Whole-Region Passive-Tracing Method.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,125(5),21.
MLA Hu, Fang,et al."Bidirectional Volume Exchange Between Kuroshio and East China Sea Shelf Water Based on a Whole-Region Passive-Tracing Method".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 125.5(2020):21.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Hu, Fang]'s Articles
[Liu, Yahao]'s Articles
[Xu, Zhenhua]'s Articles
Baidu academic
Similar articles in Baidu academic
[Hu, Fang]'s Articles
[Liu, Yahao]'s Articles
[Xu, Zhenhua]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Hu, Fang]'s Articles
[Liu, Yahao]'s Articles
[Xu, Zhenhua]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.