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f Seismic migration and absorbing boundaries with a one-way wave system in heterogeneous media
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 55th EAEG Meeting, Jun 1993, cp-46-00320
- ISBN: 978-94-6282-135-4
Abstract
The most common wave equation migration methods are based on the paraxial approximation where one-way wave equations describe downward propagating waves (Claerbout, 1970, Kjartansson, 1979). One-way wave equations are obtained by seeking a polynomial or rational approximation to the dispersion relation. Here, we present a seismic migration technique with an one-way wave system which is obtained from the characteristic analysis of the acoustic wave system. This one-way wave system describes accurately waves propagating at angles up to 80°. A new set of absorbing boundary conditions based on one-way wave systems has also been constructed.