Predicting rugged water-bottom multiples through wavefield extrapolation with rejection and injection |

One of the solutions to the above-mentioned issue is to make an approximation to the rugged water bottom. The approximation depends on which algorithm I choose. For example, if the wavefield extrapolation is based on the Kirchhoff integral algorithm, a dipping flat surface can be selected to approximate the rugged water bottom, so that the calculation of the Greenâ€™s function does not involve the subsurface velocity. Similarly, if the wavefield extrapolation is based on the phase shift or finite difference algorithm, a horizontal flat surface can be chosen. Obviously, these approximations to the real water bottom will sacrifice effectiveness for efficiency.

To improve the efficiency without loss of effectiveness, I present a so-called wavefield extrapolation with rejection and injection.

Predicting rugged water-bottom multiples through wavefield extrapolation with rejection and injection |

2010-05-19