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We derived a set of equations that constrains the travel path
of a ray in a three-dimensional earth model with a depth-variable
velocity. This system can be solved for the zero-offset traveltime
and the emergence point of the ray, yielding an efficient method
for dip moveout processing. A successful implementation
of the equations have been realized by Artley at the Colorado School
of Mines, showing the expected saddle-like impulse response.
Stanford Exploration Project
11/17/1997