Seismic radiation analyses in anisotropic media based on general dislocation source model

Abstract Anisotropy affects the focal mechanism and makes it complicated. A shear motion generates a pure double-couple (DC) source in isotropic media. While anisotropic media, will produce non-DC components, which contain (ISO) compensated linear vector dipole (CLVD) components. Besides, coupled with diversity of fault motion, may become extremely In this paper, seismic moment tensor is obtained based on dislocation model, then variety analyses are performed tensor, including decomposition, radiation pattern, radiated energy ratio propagation characteristics. Since anisotropy medium also influences wave propagation, hypothesis made that region minimal anisotropic, but path isotropic. The research gives some interesting conclusions. It found mainly under low slope angle while high has little effect polarity. terms if only one ISO or CLVD exists, can be asserted because components accompanied by isotropy As for DC component, results indicate most important factors determining radiant energy. This paper presents valuable findings general anisotropy, helps to recognise characteristics earthquake build solid foundations subsequent inversion mechanism.