气旋生浪的数值模拟研究及其特征分析  

Numerical simulation of cyclone generated waves and its characteristics

作　　者：姜静[1] 徐福敏[2] 

机构地区：[1]河海大学港口海岸与近海工程学院,江苏南京210098 [2]河海大学海洋灾害及防护教育部重点实验室,江苏南京210098

出　　处：《人民长江》2017年第10期89-96,共8页Yangtze River

基　　金："十二五"国家科技支撑计划项目(2012BAB03B01)

摘　　要：利用Holland模型、Jelesnianski模型构造飓风风场,并针对快速移行气旋其风场不对称性明显的特征构造一种基于实测数据的风场,驱动第三代海浪模式WAVE WATCHⅢ,对飓风Juan影响下北大西洋的海浪进行数值模拟。通过对比试验结果与观测数据的误差,比较3种方法对于合成高速移行飓风风场的适用性,并选择最优模拟结果对海浪组成特征进行分析。结果表明:基于实测数据的合成风场与真实风场最接近,海浪模拟效果最优;飓风中心海域有大片的风浪大值区,风浪4 m波高等值线内基本无涌浪,涌浪主要分布在风浪大值区外围左侧海域;风浪波高比涌浪波高大,涌浪影响范围广。Holland model and Jelesnianski model was used to construct a hurricane wind field, and a wind field based on measured data was constructed considering the obvious asymmetry feature of rapidly moving cyclone wind field. Then North Atlantic waves affected by Hurricane Juan were simulated by the third generation wave model WAVE WATCH Ⅲ. Through analyzing the deviation between the simulation data and the observation data, the applicability of three methods in high - speed moved total hurricane wind field were compared, and the optimal simulation results were selected to analyze the compositional characteristics of the waves. The research results show that the total wind field based on measured data is the most consistent with the real wind field, and the simulation effect of the waves is optimal; wind wave is dominant in the hurricane center; swell hardly exists on the contour line of 4m wind wave height but mainly in the left of the peripheral zone of wind wave of high value. The wind wave height is larger than the swell wave height, and swell has a wide influence range.

关 键 词：合成风场 WAVE WATCHⅢ Holland模型 Jelesnianski模型 SWELL 

分 类 号：P731.33[天文地球—海洋科学]