3-D ray-tracing in anisotropic media
, by Jean Luc Guiziou
The issue of adapting a fast 3-D seismic ray-tracing algorithm to anisotropic media is
addressed. Two approaches are considered. A method restricted to orthotropic anisotropy
leads to exact calculations of traveltimes. A second algorithm, based on linearization
techniques, enables to approximate the traveltimes in the case of an inhomogeneous generally
anisotropic medium, under the assumption of weak anisotropy. The two methods are discussed
in terms of their potential application to reflection seismology.