A remark on the seismic resolution function for the homogeneous elastic isotropic case

摘要: We examine the resolution function or hessian for a point scatterer in homogeneous isotropic elastic background. A suitable approximate will improve efficiency of an migration code. Isotropic elasticity requires three model parameters. Migration recorded data mix contributions from perturbations these The can be interpreted as result generated by scatterer. This involves 3×3 images. standard choice density, P-, and S-impedance provides some decoupling between parameters, that is, density perturbation produces strongest amplitude image, so on. If we want to use inverse block-diagonal part preconditioner iterative inversion scheme, should investigate parameters terms preconditioned An example receiver line with vertical-component vertical-force sources shows Lame λ +2μ μ provide slightly better than S-impedance.