Author(s)

D.A. Alvarez-Cuevas, J.L. Rodriguez-Zuniga & F.J. Sanchez-Sesma

Abstract

Use of Gaussian beams to study the effects of interface irregularities on Love waves D.A. Alvarez-Cuevas^, J.L. Rodriguez-Zuniga^, F.J. Sanchez-Sesma^ "Institute de Ingenieria, UN AM; Apto. 70-472, Coyoacdn 04510, Mexico D.F., Mexico ^Centro de Investigation Sismica; Carretera al Ajusco 203, Tlalpan 14200, Mexico D.F., Mexico ABSTRACT Gaussian beam summation is applied to study the effects of dipping and irregular interfaces on Love waves. Gaussian beams are approximate solutions of wave equation under the parabolic approximation. Closely related to ray theory, this approach is free of some limitations of ray solutions. For instance, it is possible to compute the wave field near to caustics because of the intrinsic smoothing effects of Gaussian beams. Given a source expansion in terms of beams and a simple ray tracing scheme that considers appropriate reflexion coefficients, the solution is computed in the frequency domain for a series of re

Keywords