A numerical experiment on nonlinear image reconstruction from first-arrival times for two-dimensional island arc structure.

Abstract

Many inversion studies of first P-arrival times have been made for the threedimensional upper mantle structure beneath the Japanese Islands by using the linear damped least-squares method One of the most recent contributions relying on this method is that by In the linear inversion it is assumed that the ray paths in the inverted model are the same as those in the initial model. The ray tracing experiments attempted in the early 1970's