气候变化领域集成服务门户(CCPortal): Numerical study on a possible cause of the ‘strange tide’ in the coastal area of Jiangsu Province, China

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DOI	10.1007/s11069-020-04111-8
	Numerical study on a possible cause of the ‘strange tide’ in the coastal area of Jiangsu Province, China
	Wang Y.; Niu X.; Yu Z.; Gao X.
发表日期	2021
ISSN	0921030X
起始页码	1687
结束页码	1701
卷号	106 期号:2
英文摘要	There are many eyewitness reports on unexpected water level change called ‘strange tide’ around the area of the radial sand ridges off the coast of Jiangsu Province, China, which has caused several fatal accidents in history. This study aims to prove whether a fast-moving atmospheric pressure disturbance can be a possible cause of the ‘strange tide.’ Based on the nonlinear shallow water model, a large number of scenarios for waves induced by a fast-moving pressure disturbance are numerically simulated and the maximum of the wave amplification ratio in each scenario is discussed. In each scenario, we assume an idealized pressure disturbance passing through the concerned area. The heading angle and translational speed of atmospheric disturbances are considered as variables. The results show that a fast-moving pressure disturbance can induce large wave level fluctuation in this area. In some special situations, the water level rise can be amplified more than 40 times than the water level change caused by a pressure disturbance with equivalent intensity under static equilibrium state. Both the heading angle and translational speed of atmospheric disturbances play a very important role in the occurrence of dangerous situation. The most dangerous combination of the two parameters is discussed, and the disaster prone locations in this area are identified considering the historical accidents and the numerical experiments. © 2020, Springer Nature B.V.
关键词	Meteotsunami Numerical simulation Proudman resonance Radial sand ridges Risk map
英文关键词	atmospheric pressure; coastal zone; computer simulation; disaster; risk assessment; sand ridge; tsunami; water level; wave; China; Jiangsu
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206652
作者单位	State Key Laboratory of Hydroscience and Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing, 100084, China
推荐引用方式 GB/T 7714	Wang Y.,Niu X.,Yu Z.,等. Numerical study on a possible cause of the ‘strange tide’ in the coastal area of Jiangsu Province, China[J],2021,106(2).
APA	Wang Y.,Niu X.,Yu Z.,&Gao X..(2021).Numerical study on a possible cause of the ‘strange tide’ in the coastal area of Jiangsu Province, China.Natural Hazards,106(2).
MLA	Wang Y.,et al."Numerical study on a possible cause of the ‘strange tide’ in the coastal area of Jiangsu Province, China".Natural Hazards 106.2(2021).