Multiresolution modeling and seismic wavefield reconstruction in attenuating media

摘要

The propagation of the seismic wavefield through a viscoelastic medium is a multiresolution process, in which depth of propagation and scale are closely associ- ated with one another. We propose the multiresolution wavefield reconstruction(MRWR)as a means to directly integrate such concepts of scale into the backpropaga- tion component of an imaging method. MRWR produces a reconstruction of the wavefield(at some fixed depth d), in which each scale term reconstitutes the resolution that was lost as the wavefield propagated some step-length towards the measurement surface, away from d.