Simulation of the Wave Field Caused by 1307 Typhoon "Soulik"

In this study,the wave field caused by typhoon Soulik is simulated by using WW3(WAVEWATCH-III)wave model,with T639forecasting wind data as the driving field.Then the precision of simulation wave data is verified by using observation data from Taiwan Island,Korean Peninsula and Japan.The structure characteristics of the typhoon wave are also analyzed in this paper.Results show that:1)The simulation typhoon wave field does well in embodying the structure characteristics of the typhoon Soulik when use T639forecasting wind field to drive WW3wave model.The simulation significant wave height(SWH)has good consistency with the observation SWH.2)Through comparison with buoy observation data,the simulation SWH keeps well consistency with observation data on variation trend,and the simulation SWH possesses relatively high precision accuracy with the numerical value being little greater than the observation data.3)The relatively large bias between simulation value and observation data at Penghu buoy site may be caused by the complex terrain and the accuracy of T639forecasting wind data at Taiwan Strait.4)The typhoon wave field is well consistent with the sea surface wind field.The SWH at high-value center could reach 13mwhen the typhoon locates in the ocean,and when the typhoon approaches the offshore areas of Fujian,it causes 11msurge.