福建沿岸天文潮-风暴潮-台风浪耦合漫堤预警系统

A tide-storm surge-wave coupled inundation warning system for Fujian coast

基于SWAN模式和MATLAB GUI软件建立了福建沿岸天文潮-风暴潮-台风浪耦合漫堤预警系统。该系统包含天文潮-风暴潮-台风浪耦合计算模式和海堤预警显示两部分:天文潮-风暴潮-海浪耦合水位计算采用自主研发的FETSWCM模式(Finite Element Tide-Storm Surge-Wave Coupled Model),台风浪计算采用SWAN模式(Simulation WAve Nearshore),耦合计算时FETSWCM为SWAN提供风场、水位场及流场,SWAN为FETSWCM提供波浪辐射应力;海堤预警显示基于MATLAB GUI软件交互界面,根据模式计算波浪爬高所及高程结果(天文潮-风暴潮耦合水位与波浪爬高的和)对福建沿岸海堤进行可视化预警报。使用该系统进行两场台风过程福建省沿岸的漫堤后报检验,结果表明:1312号台风过程7条海堤及1319号台风过程东山县8条海堤漫堤预警准确率为87%。

A visualized inundation warning system which coupled tide, storm surge and wave was established for the Fujian coast based on FORTRAN and MATLAB GUI. The water raise height coupled tide, storm surge and wave was simulated by FETSWCM, and the wave height was simulated by SWAN. In each step, FETSWCM and SWAN shared wind, water level, current and radiation stress gradient. The warning height is based on the above simulations. The warning of the seawalls along Fujian Coast can display by MATLAB GUI. The warning of typhoon TRAMI and USAGI for 15 seawalls along Fujian Coast were successful with the accuracy of 87%.