气候变化领域集成服务门户(CCPortal): Modulation of Shelf Circulations Under Multiple River Discharges in the East China Sea

CCPortal

DOI	10.1029/2020JC016990
	Modulation of Shelf Circulations Under Multiple River Discharges in the East China Sea
	Wu R.; Wu H.; Wang Y.
发表日期	2021
ISSN	21699275
卷号	126 期号:4
英文摘要	East Asian Marginal Seas are a continuum receiving multiple large rivers including the Changjiang, the Yellow, and the Pearl Rivers. Fates of these river discharges are strongly influenced by the energetic shelf circulation system. Meanwhile, the massive freshwater discharge from these rivers also modulate the density structure and dynamic height of receiving seas, which could affect the shelf circulation as well. In this study, we developed a numerical model covering the East Asian Marginal Seas based on the Regional Ocean Modeling System to assess the influence of river plumes on the circulation over the entire shelf. The East China Sea was selected as a focus due to the massive freshwater influence and the strong and complicated shelf circulation therein. The model results suggested that both local (e.g., the Changjiang River) and remote (e.g., the Pearl River) rivers were important in regulating the shelf circulation. Overall, the riverine freshwater elevated the adjacent sea level and changed the density field, which weakened the Taiwan Warm Current (TWC), strengthened the southward coastal current, and even disturbed the Kuroshio. In the vertical direction, the TWC turned from surface-intensified to bottom-intensified under the river plume influences. In the cross-shelf direction, the cross-shelf exchange was enhanced and the Kuroshio subsurface water could more easily intrude to the coastal region, due to the enhanced bottom Ekman transport. The fundamental mechanism is the barotropic and baroclinic adjustments under the riverine influences, which could be considered as a shelf-version of the estuarine circulation. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	East China Sea; river plume; shelf circulation
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/186398
作者单位	State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, China; Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai, China; School of Marine Sciences, East China Normal University, Shanghai, China
推荐引用方式 GB/T 7714	Wu R.,Wu H.,Wang Y.. Modulation of Shelf Circulations Under Multiple River Discharges in the East China Sea[J],2021,126(4).
APA	Wu R.,Wu H.,&Wang Y..(2021).Modulation of Shelf Circulations Under Multiple River Discharges in the East China Sea.Journal of Geophysical Research: Oceans,126(4).
MLA	Wu R.,et al."Modulation of Shelf Circulations Under Multiple River Discharges in the East China Sea".Journal of Geophysical Research: Oceans 126.4(2021).