气候变化领域集成服务门户(CCPortal): On the Role of Anthropogenic Activity and Sea-Level-Rise in Tidal Distortion on the Open Coast of the Yellow Sea Shelf

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DOI	10.1029/2020JC016583
	On the Role of Anthropogenic Activity and Sea-Level-Rise in Tidal Distortion on the Open Coast of the Yellow Sea Shelf
	Feng X.; Feng H.
发表日期	2021
ISSN	21699275
卷号	126 期号:3
英文摘要	This study investigates how varied coastline strategies and rising mean-sea-level influence tidal distortion along the open coast of the Yellow Sea shelf. The major contributors to tidal distortion were first identified. Then, the primary tidal constituents causing changes in tidal propagation and distortion in response to shoreline reconstruction management and near-future sea-level-rise (SLR) were determined. The intrinsic mechanisms causing tidal duration asymmetry (TDA) were investigated and found to differ in various types of coastal systems. Specifically, the nonlinear tidal interaction between M2/M4, M2/S2/MS4 and K1/O1/M2 are the top three dominant contributors to TDA. The interactions between M2/M4 and M2/S2/MS4 are most sensitive to different coastline configurations and produce the largest evolution in tidal distortion. Two primary factors are (i) the location of the amphidromic point of the semidiurnal tides in the deep ocean, which controls the M2 and S2 energy fluxes into embayment, and (ii) the nondimensional amplitude (A/h), which importantly indicates tidal nonlinearity and determines shallow tide generation. For the coast with a progressive tidal system, tidal distortion and shallow-water tide genesis depend mainly on the influx of semidiurnal tides from offshore, which is controlled by the position of the M2 amphidrome. For a coast with quasistanding tidal behavior, however, the scales and positions of tidal flats and shoals play vital roles in tidal distortion and the genesis of shallow-water tides. Model simulations suggest that hardened shoreline or SLR could dampen the advection and bottom dissipation, thus reducing tidal distortion. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	coastal restoration; hardened defense; paired/triad tidal interaction; sea-level-rise; tidal duration asymmetry; Yellow Sea shelf
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/186447
作者单位	Key Laboratory of Ministry of Education for Coastal Disaster and Protection, Hohai University, Nanjing, China; College of Harbor, Coastal and Offshore Engineering, Hohai University, Nanjing, China
推荐引用方式 GB/T 7714	Feng X.,Feng H.. On the Role of Anthropogenic Activity and Sea-Level-Rise in Tidal Distortion on the Open Coast of the Yellow Sea Shelf[J],2021,126(3).
APA	Feng X.,&Feng H..(2021).On the Role of Anthropogenic Activity and Sea-Level-Rise in Tidal Distortion on the Open Coast of the Yellow Sea Shelf.Journal of Geophysical Research: Oceans,126(3).
MLA	Feng X.,et al."On the Role of Anthropogenic Activity and Sea-Level-Rise in Tidal Distortion on the Open Coast of the Yellow Sea Shelf".Journal of Geophysical Research: Oceans 126.3(2021).