Up: Popovici : FD Traveltime
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I have presented an insight in the Engquist-Osher minimization
scheme used in Van Trier's finite-difference traveltime calculations.
I explained the approximations made by the scheme and
the probable source of numerical instability.
I extended Van Trier's algorithm to the 3-D case and showed examples
of finite-difference traveltime maps for 3-D models with
constant velocity and relatively
mild variations in velocity.
Stanford Exploration Project