3-D Ray-Tracing: Application to Tomography
, by Jean Luc Guiziou
A fast ray-tracing algorithm based on continuation techniques enables us
to model the traveltime of seismic rays which propagate through a
three-dimensional layered medium. The algorithm is designed to handle many
seismic lines spread on the surface of the earth arbitrarily. This ray-tracing
is applied to a tomographic procedure so as to recover a 3-D
layered image of the subsurface. The analytical link between the ray-tracing
algorithm and the non-linear inversion algorithm leads to a computationally
efficient tomographic scheme. A few synthetic examples demonstrate the method's ability to provide a reliable image of the earth.}
STANFORD