摘要
根据冲击动力学理论,采用三维动态有限元方法,模拟研究了地壳中的冲击波对地震触发的影响。自然 界中随机载荷产生的冲击波导致了库仑应力的减小,引发块体间(或块体内)的错动,因而在地震的触发中,动态应 力起很大的作用。
According to the impact dynamics theory,a 3-D dynamic FEM model is used to simulate the effect of the crustal impact waves on the earthquake triggering.The impact waves resulted from stochastic load lead to the decrease of the equivalent Coulomb stress, which results in the dislocation between the crust blocks(or within a block).Consequently,it is concluded that the dynamic stress plays an important role on the earthquake triggering.
出处
《大地测量与地球动力学》
CSCD
北大核心
2005年第1期108-112,共5页
Journal of Geodesy and Geodynamics
基金
国家自然科学基金项目(40174024)
