ON TWO-DIMENSIONAL DYNAMICAL DISLOCATIONS: THEORETICAL SEISMOGRAMS

Abstract

The problem of a two-dimensional dynamical dislocation in an isotropic, homogeneous, unbounded, elastic medium has been discussed by the present authors in a recent paper (SINGH and SIKKA, 1988), assuming harmonic time-dependence. The aim of the present paper is to generalize the results to arbitrary time-dependence. Explicit theoretical expressions for the displacement and the stress components for a two-dimensional dislocation source have been obtained. These expressions can be used to calculate the theoretical seismograms due to a two-dimensional dislocation in an unbounded medium.