3-D TRUE-AMPLITUDE MIGRATION OF 3-C COMPRESSIONAL AND CONVERTED SHEAR-WAVES

We present here the main features of a Ray-Born modelling and quantita tive migration in 3-D heterogeneous isotropic media, where both P-to-P and P-to-S diffraction modes are investigated. Starting from Beylkin' s general formalism, we propose a monoparameter formula which is appro priate for migrating single gathers (common receiver or common source) . We explain how to take the S-wave polarization into account when mig rating P-to-S waves. Finally, we present an application restricted to an acoustic 3-D synthetic data set.