Treatment of Variable Topography With the Seismoacoustic Parabolic Equation

The seismoacoustic parabolic equation is extended to handle variable topography, and a related approach is used to improve stability for problems involving sloping fluid-solid interfaces. A range-dependent medium is approximated in terms of a series of range-independent regions, and single-scattering operators are used to obtain transmitted fields across the vertical interfaces between regions. Sl...