摘要
台风过程期间,风暴潮和海浪是相伴相生的,相互作用的。波致辐射应力对于近岸风暴增、减水起着十分重要的作用,传统的海浪模式计算辐射应力耗时较多,不能满足业务化预报的要求。根据已有波浪辐射应力的理论表达式,经过严密的数学推导,适当的简化处理,提出了一个较为简单的波浪辐射应力表达式,并将其应用到业务化风暴潮数值预报模式中去,通过对两个影响粤西沿海的台风风暴潮过程模拟发现:考虑了波浪辐射应力作用后的风暴潮数值模式不仅物理过程更加完善,而且模式对风暴潮的模拟效果更好。
During the process of typhoon,storm surges and waves are concomitant and interact with each other.Wave-induced radiation stress plays an important role on the nearshore.To get correct radiation stress,storm surge.The traditional 3rd generation sea wave model is time-consuming and can not meet the requirements of operational forecasting.On the basis of primitive expression of wave-induced radiation stress,a simplified radiation stress expression is deduced and can be easily added to the storm surge model.A practical storm surge model including the role of wave set-up in nearshore waters is proposed.The new model can not only improve the physical process of wave set-up and time-saving,but also obtain a more satisfactory result than the old one through two disastrous storm surge＇s simulation in Guangdong coastal areas.
出处
《海洋学报》
CAS
CSCD
北大核心
2011年第5期47-53,共7页
基金
国家"十一五"科技支撑课题(2006BAC03B01)
关键词
波浪辐射应力
风暴潮
数值模拟
wave-induced radiation stress
storm surge
numerical simulation
