Influence of Fault Characteristics on Ground Motion for Incident SV Waves

A numerical solution to 2-D fault site model for incident SV waves was derived by using the explicit finite element combining transmitting boundary,and the distribution rules of site ground motion influenced by different fault characteristics,such as width and shear wave velocity of fault fracture zone,incidence angle of the seismic radiation,are discussed.The numerical simulation shows that transform waves can develop inside low-velocity-fault-zone(LVFZ)when struck by external incident seismic radiation,and trapped waves can develop obviously inside the LVFZ.This result implies that the invariance of energy,struck by external incident seismic radiation,is congregated at the LVFZ,and the convergence effect increases with the increasing of the width and the decreasing of the shear wave velocity of the LVFZ.The vertical LVFZ can obstruct the spread of oblique incidence seismic wave,and the isolation effect decreases with the increasing incidence angle.The study about the seismic response of a variety of LVFZ mo