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Water exchange through the Kerama Gap estimated with a 25-year Pacific HYbrid Coordinate Ocean Model
Zhou Wenzheng1,2; Yu Fei1; Nan Feng1
2017-11-01
Source PublicationCHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN0254-4059
Volume35Issue:6Pages:1287-1302
Corresponding AuthorYu Fei(yuf@qdio.ac.cn)
AbstractVariations in water exchange through the Kerama Gap (between Okinawa Island and Miyakojima Island) from 1979 to 2003 were estimated with the 0.08 degrees Pacific HYbrid Coordinate Ocean Model (HYCOM). The model results show that the mean transport through the Kerama Gap (KGT) from the Pacific Ocean to the East China Sea (ECS) was 2.1 Sv, which agrees well with the observed mean KGT (2.0 Sv) for 2009-2010. Over the time period examined, the monthly KGT varied from -10.9 Sv to 15.8 Sv and had a standard deviation of +/- 5.0 Sv. The water mainly enters the ECS via the subsurface layer (300-500 m) along the northeastern slope of the Kerama Gap and mainly flows out of the ECS into the southwest of the Kerama Gap. The seasonal and interannual variations of the KGT and the Kuroshio upstream transport were negatively correlated. The Kuroshio upstream transport was largest in summer and smallest in autumn while the KGT was smallest in summer (1.02 Sv) and largest in spring (2.94 Sv) and autumn (2.44 Sv). The seasonal and interannual variations in the Kuroshio downstream (across the PN-line) transport differed significantly from the Kuroshio upstream transport but corresponded well with the KGT and the sum of the transport through the Kerama Gap and the Kuroshio upstream, which indicates that information about variation in the KGT is important for determining variation in the Kuroshio transport along the PN-line.
KeywordKerama Gap Kuroshio Ryukyu Current HYbrid Coordinate Ocean Model (HYCOM) water exchange
DOI10.1007/s00343-017-6141-2
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41306020] ; National Ocean Subject[XDA11020601] ; NSFC Shandong Joint Found for Marine Science Research Centers[U1406401] ; NSFC Innovative Group Grant[41421005]
WOS Research AreaMarine & Freshwater Biology ; Oceanography
WOS SubjectLimnology ; Oceanography
WOS IDWOS:000415810900003
PublisherSCIENCE PRESS
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Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/157288
Collection中国科学院海洋研究所
Corresponding AuthorYu Fei
Affiliation1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, 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 Wenzheng,Yu Fei,Nan Feng. Water exchange through the Kerama Gap estimated with a 25-year Pacific HYbrid Coordinate Ocean Model[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2017,35(6):1287-1302.
APA Zhou Wenzheng,Yu Fei,&Nan Feng.(2017).Water exchange through the Kerama Gap estimated with a 25-year Pacific HYbrid Coordinate Ocean Model.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,35(6),1287-1302.
MLA Zhou Wenzheng,et al."Water exchange through the Kerama Gap estimated with a 25-year Pacific HYbrid Coordinate Ocean Model".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 35.6(2017):1287-1302.
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