Abstract

Many geophysical processes can be formulated in terms of the Green's functions of the wave equation. A process such as pre-stack Kirchhoff migration requires the estimation of the Green's function for every surface (source or receiver) location. The cost of calculating and storing the full Green's function is often prohibitive. Calculating one Green's function involves solving the full two-way wave equation for an impulsive source at each surface location. The storage required for the full Green's function is very large, the Green's function has an extra dimension, depth, compared to surface seismic data.

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