气候变化领域集成服务门户(CCPortal): Detachment of Low-Salinity Water From the Yellow River Plume in Summer

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DOI	10.1029/2020JC016344
	Detachment of Low-Salinity Water From the Yellow River Plume in Summer
	Yu X.; Guo X.; Gao H.
发表日期	2020
ISSN	21699275
卷号	125 期号:10
英文摘要	Historical hydrographic data reveal that low-salinity water can detach from the Yellow River plume in summer. In this study, the mechanism of this detachment is examined using a three-dimensional numerical model that reproduced the observed detachment, including the position and size of the detached low-salinity water patch. Sensitivity experiments showed that tide-induced residual currents and tidal mixing around the Yellow River mouth played key roles in the detachment during spring tide. During the transition from neap tide to spring tide, the intensification of the northward tide-induced residual current and the weakening of the southward density-driven current lead to a net northward residual current (0.03 m/s), transporting high-salinity water to the southern area of low-salinity water. Meanwhile, the gradually strengthened tidal mixing also increased surface salinity, which was apparent in the central area of low-salinity water. With the combination of these two effects, the low-salinity water was separated into two parts during spring tide; that is, detachment of low-salinity water occurred. The above scenario works with a condition of no wind. With the prevailing southeasterly winds during summer, the northeastward wind-induced surface current promoted detachment by moving the detached low-salinity water northeastward and enlarging its size. In contrast, the northerly wind that prevails in the other seasons drove low-salinity water southward, which then flowed along the coast and hindered detachment. Consequently, the detachment of low-salinity water from the Yellow River plume occurs only in summer. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	low-salinity water detachment; neap-spring tidal cycle; tide-induced residual current; wind; Yellow River plume
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/186626
作者单位	Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, China; Laboratory for Marine Ecology and Environmental Sciences, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; Center for Marine Environmental Studies, Ehime University, Matsuyama, Japan
推荐引用方式 GB/T 7714	Yu X.,Guo X.,Gao H.. Detachment of Low-Salinity Water From the Yellow River Plume in Summer[J],2020,125(10).
APA	Yu X.,Guo X.,&Gao H..(2020).Detachment of Low-Salinity Water From the Yellow River Plume in Summer.Journal of Geophysical Research: Oceans,125(10).
MLA	Yu X.,et al."Detachment of Low-Salinity Water From the Yellow River Plume in Summer".Journal of Geophysical Research: Oceans 125.10(2020).