IOCAS-IR  > 海洋环流与波动重点实验室
The onshore intrusion of Kuroshio subsurface water from February to July and a mechanism for the intrusion variation
Yang, Dezhou1,2,3; Yin, Baoshu1,2,3,4; Chai, Fei5,6; Feng, Xingru1,2,3; Xue, Huijie6; Gao, Guandong1,2,3; Yu, Fei1,2,3,4
2018-10-01
Source PublicationPROGRESS IN OCEANOGRAPHY
ISSN0079-6611
Volume167Pages:97-115
Corresponding AuthorYin, Baoshu(bsyin@qdio.ac.cn)
AbstractTo examine the variation of Kuroshio subsurface water (KSSW) off the coast of Zhejiang province, China, we carried out six monthly cruises from February to July 2015. Observations show that the KSSW appears in a frequently reported algal bloom area near the coast as early as in April and persists until July. However, the KSSW was absent in February. We set up a fine-resolution (4-km) model, which can reproduce most of the observed features. Model results and cruise data suggest that a nearshore Kuroshio branch current (NKBC) originated from the KSSW northeast of Taiwan can emerge as early as in April, which is responsible for the observed KSSW from April to July. However, in February NKBC turns seaward before reaching this algal bloom area, and thus the KSSW is absent. In addition to the traditional mechanisms of wind/bottom stress and cooling, we suggest a new mechanism of this NKBC variation. In the origin area of the NKBC, the KSSW is more shoreward squeezed and flows more westward (flowing northward in February while northwestward in April) in April than February. The change of flow direction caused different meeting point between the shelf break and the Kuroshio Current. According to topographic beta spiral, different meeting points will induce different upwelling velocity and then contribute to the different intrusion pattern of NKBC. This direction change is one of the essential ingredients which enable NKBC to reach as far as the algal bloom area. Hence, algal blooms in April may be potentially influenced by this NKBC, whose water properties are significantly different to the coastal water.
KeywordKuroshio East China Sea Intrusion Branch current
DOI10.1016/j.pocean.2018.08.044
Indexed BySCI
Language英语
Funding ProjectNational Key Research, Development Program of China[2016YFC1401601] ; National Key Research, Development Program of China[2017YFC1404000] ; National Key Research, Development Program of China[2017YFA0604102] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA11020104] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA110203052] ; National Natural Science Foundation of China (NSFC)[41576023] ; National Natural Science Foundation of China (NSFC)[41876019] ; National Natural Science Foundation of China (NSFC)[41376030] ; National Natural Science Foundation of China (NSFC)[41476019] ; Foundation for Innovative Research Groups of NSFC[41421005] ; NSFC-Shandong Joint Fund for Marine Science Research Centers[U1406401] ; Aoshan Sci-Tec Innovative Project of Qingdao National Laboratory for Marine Science and Technology[2016ASKJ02] ; National Key research and development Plan Sino-Australian Center for Healthy Coasts[2016YFE0101500] ; High Performance Computing Center at the IOCAS
WOS Research AreaOceanography
WOS SubjectOceanography
WOS IDWOS:000447576400007
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/160418
Collection海洋环流与波动重点实验室
Corresponding AuthorYin, Baoshu
Affiliation1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China
2.Pilot Natl Lab Marine Sci & Technol Qingdao, Qingdao 266237, Peoples R China
3.Chinese Acad Sci, Ctr Ocean Mega Sci, 7 Nanhai Rd, Qingdao 266071, Peoples R China
4.Univ Chinese Acad Sci, Beijing, Peoples R China
5.State Ocean Adm, Inst Oceanog 2, State Key Lab Satellite Ocean Environm Dynam, Beijing, Peoples R China
6.Univ Maine, Sch Marine Sci, Orono, ME 04469 USA
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Yang, Dezhou,Yin, Baoshu,Chai, Fei,et al. The onshore intrusion of Kuroshio subsurface water from February to July and a mechanism for the intrusion variation[J]. PROGRESS IN OCEANOGRAPHY,2018,167:97-115.
APA Yang, Dezhou.,Yin, Baoshu.,Chai, Fei.,Feng, Xingru.,Xue, Huijie.,...&Yu, Fei.(2018).The onshore intrusion of Kuroshio subsurface water from February to July and a mechanism for the intrusion variation.PROGRESS IN OCEANOGRAPHY,167,97-115.
MLA Yang, Dezhou,et al."The onshore intrusion of Kuroshio subsurface water from February to July and a mechanism for the intrusion variation".PROGRESS IN OCEANOGRAPHY 167(2018):97-115.
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