首页|Different responses of two adjacent artificial beaches to Typhoon Hato in Zhuhai,China

Different responses of two adjacent artificial beaches to Typhoon Hato in Zhuhai,China

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  • 国家科技期刊平台
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Major differences in beach erosion between two neighboring artificial beaches Xiangluwan Beach(XL beach)and Meiliwan Beach(ML beach)in Zhuhai,China,were studied after Super Typhoon Hato.In this study,a fully nonlinear Boussinesq wave model(FUNWAVE)-Total Variation Diminishing(TVD)was used to distinguish the main impact factors,their relative contributions,and the hydrodynamic mechanisms underlying the different beach responses.Results show that compared to the ML beach,the main reason for the relatively weak erosion on Xiangluwan(XL)beach was the smaller beach berm height(accounting for approximately 75.9％of the erosion response).Regarding the beach with a higher berm,the stronger wave-induced undertow flow,along with the higher sediment concentration,led to a higher offshore sediment transport flux,resulting in more severe erosion relative to the beach with a smaller berm height.The second most important reason explaining the weak erosion on XL beach was the absence of seawalls(accounting for approximately 17.9％of the erosion response).Wave reflection induced by the seawall could cause higher suspended sediment concentration,resulting in a toe scouring near the seawall.The offshore submerged breakwater protected XL beach slightly(accounting for approximately 6.1％of the erosion response).Due to the higher water level induced by storm surge,most of the wave energy could penetrate through the submerged breakwater.The effect of the larger berm width of XL beach was negligible.Compared to the beach with a larger berm width,the erosion/deposition regions in the beach with a narrower berm width showed shoreward migration,without significant changes in the erosion/deposition extent.Despite of this,the larger berm width could reduce the wave energy reaching the shoreline.This study of the storm stability of artificial beaches may be applied to beach restoration design.

beach erosionberm heightberm widthseawallfully nonlinear Boussinesq wave model(FUNWAVE)

Jun ZHU、Qing WANG、Chao ZHAN、Fengjuan SUN、Wenhao HUA、Jianhui LIU、Hongshuai QI、Yu YANG

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Coastal Research Institute,Ludong University,Yantai 264025,China

Third Institute of Oceanography,Ministry of Natural Resources,Xiamen 261005,China

国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金Basic Research Project of the Science and Technology Innovation Development Program of in Yantai

4200617642330406U1706220419010062022JCYJ028

2024

10.1007/s00343-023-2401-5

海洋湖沼学报(英文版)
中国海洋湖沼学会

海洋湖沼学报(英文版)

CSTPCD
影响因子：0.386
ISSN：2096-5508
年,卷(期)：2024.42(2)
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