Asymmetry response of storm surges along the eastern coast of the Taiwan Strait,Frontiers in Marine Science

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Asymmetry response of storm surges along the eastern coast of the Taiwan Strait
Frontiers in Marine Science ( IF 3.7 ) Pub Date : 2024-05-08 , DOI: 10.3389/fmars.2024.1368181
Ruijie Zhang , Junqiang Shen , Li Li , Yuting Wang , Jiang Huang , Mingzhang Zeng , Xiaogang Guo

Spatiotemporal variation of storm surges in the Taiwan Strait (TWS) is studied using water level datasets from 14 tidal gauge stations located in the TWS from summer to fall of 2016. The effects of bathymetry on storm surges and tropical cyclone (TC)-induced continental shelf wave (CSW) are explored. By comparing water level response along the east coast of TWS, it is found that storm surges are asymmetric on the north and south sides of the Zhan-Yun Ridge (ZYR), regardless of the different categories and tracks of TCs passing by. Observations indicate that the ZYR could modulate the storm surges and the CSW propagation; ZYR can not only amplify the storm surges that generally peak around the ZYR, but also block the CSW propagation by dramatically dissipating its kinetic energy as revealed by the dispersion relation for the first mode CSW. Moreover, local wind work and the remote forcing, which are induced by TCs and cold fronts, respectively, can also modulate the synoptic variations of water level in the TWS.

更新日期：2024-05-08

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