气候变化领域集成服务门户(CCPortal): New Insight Into the Onshore Intrusion of the Kuroshio Into the East China Sea

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DOI	10.1029/2020JC016248
	New Insight Into the Onshore Intrusion of the Kuroshio Into the East China Sea
	Cui X.; Yang D.; Sun C.; Feng X.; Gao G.; Xu L.; Yin B.
发表日期	2021
ISSN	21699275
卷号	126 期号:2
英文摘要	The Kuroshio Current, a vigorous western boundary current in the Pacific, is responsible for bringing high temperature, high salinity, and phosphate-rich open ocean water into the East China Sea (ECS) when it flows past Taiwan and generates a branch current, known as the Kuroshio Branch Current (KBC), which intrudes onto the continental shelf of the ECS. Based on observations and numerical modeling, a 1.5-layer reduced-gravity model is evaluated and modified to simulate the flow pattern of the Kuroshio intrusion (KI) northeast of Taiwan. We revised the analytical solution derived by Hsueh (1992), https://doi.org/10.1029/92JC01401 to conserve the horizontal momentum balance in the along-shelf and cross-shelf directions. The new analytical solution not only explains the KI angle but also addresses the KBC recirculation mechanism. To sustain the steady-state momentum balance in the area adjacent to the shelf break northeast of Taiwan, there must be a recirculation that plays the same role in vorticity dynamics as the combination of the joint effect of baroclinicity and relief, bottom friction, and nonlinear advection. Unlike previous studies, our results agree well with the observations and could account for seasonal variations in the KI direction. Moreover, the new model predicts a reasonable velocity maximum (0.42 m s−1) over the shelf break. Satellite data and numerical results confirm that the new solution reflects a reasonable estimation for KI direction. This theory may potentially be applied to regions with trenches or valleys with completely different flow patterns by using similar analytical methods. © 2021. The Authors.
英文关键词	East China Sea; Kuroshio Branch Current; Kuroshio intrusion; reduced-gravity model
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186478
作者单位	CAS Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China; Function Laboratory for Ocean Dynamics and Climate, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China; CSIRO Oceans & Atmosphere, Crawley, WA, Australia
推荐引用方式 GB/T 7714	Cui X.,Yang D.,Sun C.,et al. New Insight Into the Onshore Intrusion of the Kuroshio Into the East China Sea[J],2021,126(2).
APA	Cui X..,Yang D..,Sun C..,Feng X..,Gao G..,...&Yin B..(2021).New Insight Into the Onshore Intrusion of the Kuroshio Into the East China Sea.Journal of Geophysical Research: Oceans,126(2).
MLA	Cui X.,et al."New Insight Into the Onshore Intrusion of the Kuroshio Into the East China Sea".Journal of Geophysical Research: Oceans 126.2(2021).