Abstract:
A family of numerical schemes, based on finite difference 
operators is introduced for the computation of elastic waves.
We use a displacement-stress formulation of the model. After 
deriving some stability results, we give an analysis of the 
computational cost. Imposing an accuracy criterion on the 
phase velocity, we derive the numerical parameters. We also 
show that an optimum order of approximation exists for a 
given precision. \\