Contributors to tidal duration asymmetry with varied coastline configurations on western shelf of Yellow Sea  

作　　者：Xi Feng Zheng Li Hui Feng Jia-yan Yang Shou-peng Xie Wei-bing Feng 

机构地区：[1]College of Harbor.Coastal and Offshore Engineering,Hohai University,Nanjing 210098,China [2]China Harbour Engineering Co.,Ltd,Beijing 100027,China [3]Key Laboratory of Port,Waterway and Sedimentation Engineering of the Ministry of Communications,Nanjing 210029,China [4]China South-to-North Water Diversion Corporation Limited,Beijing 100036,China

出　　处：《Water Science and Engineering》2024年第1期1-12,共12页水科学与水工程（英文版）

基　　金：supported by the Joint Foundation of the Ministry of Education(Grant No.8091B022123);the Water Science and Technology Project of Jiangsu Province(Grant No.2022023);the Project of the Key Technologies of Port Engineering Construction under Medium and Long Period Wave Conditions(Grant No.ZJ2015-1);the Open Funding from the Key Laboratory of Port,Waterway and Sedimentation Engineering of the Ministry of Communications in 2023(Grant No.Yk223001-3).

摘　　要：Coastal management in China is confronted with an urgent choice between natural restoration and maintenance of existing seawalls and reclaimed land for economic development.A key criterion for making this decision is the resilience to coastal flooding,which depends on the ability to predict tidal level.Tidal duration asymmetry(TDA)is a key parameter in determination of the arrival and duration of flood tides.This study selected the western inner shelf of the Yellow Sea(WYS)as the study area and investigated the responses of TDA to different shoreline configurations and relative sea level rise.The responses of TDA to shoreline reconstruction yielded spatial variability locally and remotely.In the nearshore area,the responses of TDA to the complex ocean environment mainly originated from the combined functions of reflection,bottom friction,and advection,which controlled the energy transfer from M2 or S2 constituents to their overtides or compound tides.The sensitivity of TDA to coastline typologies was not limited to coastal waters but could stretch over the entire inner shelf.The vulnerability of tidal responses was due to the displacement of the M2 amphidrome of the Kelvin wave on the WYS,which in turn changed tidal energy fluxes over the regime.The relative sea level rise could intensify the feedback of TDA to seawalls and land reclamation.

关 键 词：Tidal duration asymmetry Western inner shelf of Yellow Sea Natural restoration Relative sea level rise Tidal amphidrome 

分 类 号：TV148[水利工程—水力学及河流动力学] TV143