In the case of a structured or rugged sea floor, wavefield extrapolation with rejection and injection is an efficient and effective technique for the prediction of the rugged water-bottom multiple and peg-legs. The Kirchhoff integral is the algorithm best suited to both the downward wavefield extrapolation of the down-going wave and the upward wavefield extrapolation of the up-going wave. The synthetic data example shows that both the specularly reflected and diffracted water-bottom multiples and peg-legs are well predicted by our method.
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