通州湾区域用海对近岸波浪场的影响

采用CCMP背景风场与Holland梯度风场模型叠加构建新的SWAN驱动风场,对台风"梅花"期间东中国海的波浪场进行数值模拟,并结合卫星数据进行验证,讨论了拖曳力系数饱和值的最适选取,以给小范围提供最佳波谱边界。运用SWAN自嵌套进行小范围数值模拟研究,结合波浪测站实测数据进行对比,对区域用海后保留通道的两种方案进行对比分析。结果表明,台风期间保留西通道较东通道有效波高更小,所取特征站位平均减幅0.10m,最大降幅达0.25m。

Influences of regional ocean utilization on coastal wave field in Tongzhou Bay

Combined with the CCMP wind field and Holland gradient wind field,based on SWAN,numerical simulation was made for the East China Sea wave field during the period of typhoon Muifa to provide optimum spectrum boundary of the small scale.The satellite data were used to verify the simulation results,and the optimal maximum value of drag coefficient was discussed.The nested small scale numerical simulation in SWAN was conducted to study and analyze two kinds of reserving channel schemes after regional ocean utilization,which combined with the measured date of wave station.The results demonstrate that the significant wave height in west passageway is smaller compared to reserving east passageway,and the average decrease is 0.10 m and the maximum damping is 0.25 m from the feature points during typhoon period.