【作者】 任智源； 赵曦； 刘桦；

【Author】 REN Zhi-yuan,ZHAO Xi,LIU Hua~* Department of Engineering Mechanics,MOE Key Laboratory of Hydrodynamics,Shanghai Jiao Tong University,Shanghai,200240

【机构】 上海交通大学工程力学系,水动力学教育部重点实验室；

【摘要】 本研究总结了海啸数值模型的最近研究进展,介绍了海啸预警技术在国际和国内的发展状况以及业务化水平。采用基于非线性浅水方程和有限体积法的浅水波数值模型(GeoClaw),针对南中国海马尼拉海沟潜在的地震海啸,模拟计算该断裂带震源区各单元板块作单位位移运动所引发的海啸波时空演化过程,建立了相应的数据库。发展了基于多个浮标波面测量信息的单元板块滑移反演方法,给出了马尼拉海沟发生8.5级地震时该海域海啸波面时间序列的快速反演计算结果,并与正问题的数值模拟结果进行比较。结果表明,基于多个浮标波面测量信息和数据库的快速反演计算方法对南海海啸可以进行快速准确的预报。更多还原

【Abstract】 This paper firstly summarizes the recent progress in numerical model of tsunami and the development of tsunami warning technology.The model GeoClaw is adopted,which is based on the shallow water equations,finite volume method and adaptive meshed refined.For the potential earthquake source in Manila Trench,this model is used to compute the wave series triggered by unit sources of potential tsunami source with unit slip,which have been to establish tsunami database.An inversion method for plate slip based on multi-buoys measured data is developed.The inversion wave profile series of earthquake with the magnitude of Mw8.5 are presented.The comparisons of the inversion results and directly simulation results show well agreement,which reveal that the method based on the tsunami database and multi-buoys monitored data is workable.更多还原