The Storm Surge Inundation Risk Warning System for Xiamen

Abstract

In order to improve the capability to defend against typhoon storm surge disaster risk and assist government departments in marine disaster prevention and mitigation in Xiamen City, this paper developed a storm surge inundation risk warning system based on a numerical model of storm surge, and simulated the inundation risk during Typhoon 1521 (Dujuan) as an example. The results showed that the numerical model could well describe the process of typhoon storm surge affecting Xiamen, and meet the needs of storm surge inundation risk analysis. 2 methods were adopted to analyze the storm surge inundation risk in the warning system by warning level and sea wall elevation, which could take different early warning and defense measures for different coastal segments with different influence degrees. The submergence range of storm surge based on the numerical model was basically consistent with that of the field survey area, and the submergence range of the area without field survey could be supplemented. In the future, the storm surge inundation risk warning system in Xiamen should be further improved and a storm surge risk evaluation system should be established.

Keywords

• typhoon storm surge
• warning tide level
• risk warning
• marine disaster
• disaster prevention and mitigation