IOCAS-IR  > 海洋环流与波动重点实验室
Numerical study of the cross-shore range and the intensity of the Nearshore Kuroshio Branch Current (NKBC)
Yan, Jie1,2,3; Hou, Yijun1,2,3,4; Qi, Peng1,2,3,4; Hu, Fang1,2,3
2021-10-23
发表期刊JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN2096-5508
页码18
通讯作者Hou, Yijun(yjhou@qdio.ac.cn) ; Qi, Peng(pqi@qdio.ac.cn)
摘要Temperature and salinity data, obtained by two snapshot surveys during 19-20 May 2019 and 12-25 September 2019 across the East China Sea (ECS) shelf, revealed that the Kuroshio intrusion to the north of 28 degrees N comprised the Nearshore Kuroshio Branch Current (NKBC) and the Offshore Kuroshio Branch Current (OKBC) at the bottom of the ECS during spring 2019, and that the NKBC was weak during autumn 2019. The Regional Ocean Model System was used to reproduce the distribution of water masses and the current structure over the continental shelf of the ECS during 2019. Analyses of the momentum balances indicated that the cross-shore range and the intensity of the NKBC were determined by the combination of the geostrophic flow and bottom Ekman current. In comparison with that in May 2019, a weakened shoreward bottom Ekman current and an increased offshoreward geostrophic flow caused the disappearance of cross-shore range of the NKBC in September 2019. Meanwhile, a diminished northeastward alongshore geostrophic flow in September 2019 also weakened the intensity of the NKBC. Sensitivity experiments indicated that a strong southwestward wind can push the western (eastern) boundary of the NKBC further offshoreward (shoreward) by increasing (decreasing) the offshore geostrophic flow (bottom Ekman current). A weak Taiwan Warm Current (TWC) can move the eastern boundary of the NKBC shoreward by decreasing the onshore bottom Ekman current. A weak Kuroshio Current (KC) can move the eastern boundary of the NKBC shoreward by increasing the offshoreward geostrophic flow. Furthermore, a strong (weak) southwestward wind, weak (strong) TWC, and strong (weak) KC can diminish (enhance) the intensity of the NKBC. Of the three factors, the wind plays the major role in influencing the NKBC.
关键词East China Sea Nearshore Kuroshio Branch Current (NKBC) Regional Ocean Model System (ROMS) ocean modeling
DOI10.1007/s00343-021-0291-y
收录类别SCI
语种英语
资助项目NSFC Shiptime Sharing Project[NORC2019-02] ; High Performance Computing Center at IOCAS[41749902]
WOS研究方向Marine & Freshwater Biology ; Oceanography
WOS类目Limnology ; Oceanography
WOS记录号WOS:000710617100006
出版者SCIENCE PRESS
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/176738
专题海洋环流与波动重点实验室
通讯作者Hou, Yijun; Qi, Peng
作者单位1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China
4.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Ocean & Climate Dynam, Qingdao 266237, Peoples R China
第一作者单位中国科学院海洋研究所;  中国科学院海洋大科学研究中心
通讯作者单位中国科学院海洋研究所;  中国科学院海洋大科学研究中心
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GB/T 7714
Yan, Jie,Hou, Yijun,Qi, Peng,et al. Numerical study of the cross-shore range and the intensity of the Nearshore Kuroshio Branch Current (NKBC)[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2021:18.
APA Yan, Jie,Hou, Yijun,Qi, Peng,&Hu, Fang.(2021).Numerical study of the cross-shore range and the intensity of the Nearshore Kuroshio Branch Current (NKBC).JOURNAL OF OCEANOLOGY AND LIMNOLOGY,18.
MLA Yan, Jie,et al."Numerical study of the cross-shore range and the intensity of the Nearshore Kuroshio Branch Current (NKBC)".JOURNAL OF OCEANOLOGY AND LIMNOLOGY (2021):18.
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