Abstract
The ground motions caused by a shallow strike-slip fault with barriers have been calculated from a three-dimensional crack model. The faulting motions have been modeled as spontaneous three-dimensional crack propagation in an elastic half space. The ground displacements and particle velocities are obtained at each grid point of a finite difference method. The results indicate that there appear two different regions with high particle velocities. One is the end zone of rupture propagation and the other is just above the barrier. If we assume that earthquake damage depends upon the particle velocity on the ground surface, it may be suggested that the damage would be largest near the barrier and at the end zone of rupture propagation. If this is the case, the positions of barriers and end points of rupture propagation for large inland shallow-focus earthquakes would be located from the distribution of damage.
