Abstract:
FINDIF solves the elastic wave equation for a line source in two dimensions by the finite
difference method (Virieux,1986; Stephen,1988b). The solution is carried out in the time domain for
either pulse or CW sources. Arbitrary distributions of compressional velocity, shear velocity and
density (including fluids and solids) can be defined on the finite difference grid. All compressional
waves, shear waves, interface waves and evanescent waves are included as are all conversions
between wave types. Multiple forward and backward scattering is automatically treated
