台风“鲇鱼”作用下南海波浪场的数值模拟研究  

Numerical simulation studies of influence on wave field in the South China Sea caused by typhoon Megi

作　　者：沈旭伟[1] 范力阳 陈国平[1] 高晨晨[1] 钟雄华[1] 

机构地区：[1]河海大学港口海岸及近海工程学院海岸灾害与防护教育部重点实验室,南京210098

出　　处：《水道港口》2016年第4期369-374,共6页Journal of Waterway and Harbor

摘　　要：运用第三代海浪模式WAVEWATCHⅢ,以台风模型风场与美国NCEP风场的合成风场为驱动风场,模拟西北太平洋在台风＂鲇鱼＂期间的波浪变化情况。在运用卫星高度计波高资料对预报模型进行验证的基础上经进一步分析认为,台风＂鲇鱼＂产生的波浪在北部湾以风浪为主,涌浪较少,而在北部湾以外的南海产生的波浪以涌浪为主,涌浪波高可达3~6 m,周期为12~16 s。在台风＂鲇鱼＂由东向变为向北行进过程中,在南海产生的涌浪也由东向逐渐变为东北向。By using the third-generation wave model WAVEWATCHⅢ, numerical simulation of the wave fielddriven by typhoon Megi in the Northwest Pacific Ocean was carried out, in which the wind field was generated by acombination of the NCEP wind field data and a typhoon model. On the basis of good validation of satellite altimetricdata, it is seen from the simulation results that wind waves take the major proportion in the Beibu Bay, and swellstake the major proportion in the area outside the Beibu Bay in the South China Sea. Swells have little impact on theBeibu Bay, while great influence on the area outside the Beibu Bay in the South China Sea. The wave heights reachto 3-6 meters and wave periods reach to 12-16 seconds. As typhoon Megi moved from east to north, the swell direc-tion changed from eastward to northeastward.

关 键 词：WAVEWATCHⅢ 台风 南海 混合浪 涌浪 

分 类 号：TV139.2[水利工程—水力学及河流动力学] O242.1[理学—计算数学]