Abstract
A mechanism of propagation for elastic SH wave which is composed of Love wave and leaking mode is investigated. We proposed a formulation for impulsive response in an elastic half space using Love wave and leaking mode in the last paper. Calculating the impulsive response following the formulation, behavior of the motion in the ground surface is explained by ray theory, because, the dispersion for Love wave and leaking mode is connected with the property of propagation derived from the ray theory. It is found that there is a relationship between phase velocity and group velocity, investigating the property of dispersion of the modes. Following the relationship, the mechanism of propagation of dispersed wave composed of Love wave and leaking mode can be explained from a point of view for the ray theory.
