地形数据对台风浪数值模拟的影响

Impact of topography on the simulation of ocean wave driven by typhoon

采用区域嵌套,在岛礁处理的方案上采用地形平滑及三次样条插值的方案处理底地形和岛礁。以QuikSCAT/NCEP混合风场驱动目前国际先进的第三代海浪模式WW3,对2006年7月发生在中国近海的一次台风浪过程展开模拟,对比分析了原始地形和处理后地形对海浪数值模拟的影响,对比结果显示:经过处理后的地形对于提高台风浪的模拟效果起到了积极作用。

Based on the third-generation wave model WW3, driven by the QuikSCAT/NCEP mixed wind field, a typhoon-wind wave in China＇s coastal waters in July 2006 was simulated. The topography and island reefs are smoothed by using cubic spline interpolation method. Comparing the effect of the original topography and the treated terrain on the numerical simulation of ocean waves, it is found that the treated terrain has played a positive role in enhancing the simulation effect of typhoon waves.