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** Up:** Van Trier: Finite-difference calculation
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I have presented a method that greatly simplifies traveltime
calculations on a regular grid.
The algorithm has the advantage over Vidale's method that all
points can be treated equally, i.e., no minimum traveltime
points have to be found at each extrapolation step, and
no choices based on local wavefront curvature have to be made.
The computations are vectorizable, and
allow efficient calculation of Greens's functions in Kirchhoff methods.

Stanford Exploration Project

1/13/1998