天文潮与海啸耦合数学模型研究——以东中国海温州湾为例  

Research on astronomical tide and tsunami coupled numerical model——A case study of Wenzhou Bay,East China Sea

作　　者：赵鑫[1,2] 应超[2] 孙志林[1] 

机构地区：[1]浙江大学海洋学院,浙江杭州310058 [2]浙江省水利河口研究院,浙江杭州310020

出　　处：《海洋学研究》2016年第2期11-17,共7页Journal of Marine Sciences

基　　金：浙江省自然科学基金项目资助(LY13E090001);浙江省科技计划项目资助(2015F50064;2015F50011)

摘　　要：在COMCOT海啸数学模型中加入潮汐边界条件,建立了东中国海天文潮与海啸耦合数学模型。在琉球海沟内侧设计震级为7.6级的海底地震,根据地震板块的错动方向不同,设计正波先行与负波先行两种海啸波,通过调整海啸波发生时间,使海啸波波峰遭遇温州湾天文高潮位。将天文潮与海啸耦合模型计算结果与线性叠加计算结果进行比较,结果表明:无论正波先行还是负波先行,天文潮与海啸耦合计算相比线性叠加的结果,海啸波的到达时间均有所提前;而从海啸波波高来看,线性叠加的计算结果则比耦合计算结果偏高。An astronomical tide and tsunami coupled numerical model of East China Sea was established by adding tidal boundary conditions into COMCOT tsunami model.Two different tsunami waves,positive leading wave and negative leading wave,were designed according to the dislocation direction of earthquake plates during an undersea earthquake with magnitude of 7.6,which occurred in Ryukyu Trench.The tsunami wave crest and astronomic high tide level occurred at the same time through the modification the phase of tsunami wave.Comparison about the summation of astronomic tide level and tsunami wave level was made between the result of coupling model and linear sum.It demonstrates that in both cases mentioned above,the tsunami wave is in advance no matter for the positive leading wave or negative leading wave.And it＇s higher for the result of linear sum with respect to tsunami wave height.

关 键 词：COMCOT模型 天文潮 海啸 耦合计算 线性叠加 

分 类 号：P731.2[天文地球—海洋科学]