Energy-Conserving Parabolic Wave Equations II. Models for Elastic Media

摘要

Energy-conserving parabolic wave models are derived for problems in oceanacoustics with a penetrable ocean bottom, including fluid and elastic materials with variable coefficients (depth-dependent and range-dependent). The approximations are based upon the corresponding models for the wave equation, given in a previous report. For problems with sloping interfaces, a simple transformation to a new coordinate system is first introduced. Finite-difference schemes are finally presented.