Wave-equation migration velocity analysis for VTI media using optimized implicit finite difference |

I test the VTI implicit finite difference scheme by impulse responses in both 2D and 3D. These impulse responses of the adjoint anisotropic WEMVA operator from a spike perturbation in the image space have a familiar banana-donut sensitivity kernel shape for both and . The amplitudes in these impulse responses show different sensitivities for different parameters with different source-receiver geometries. The waves traveling vertically have higher sensitivity to and the waves traveling at large angles have higher sensitivity to . Therefore, the 3D sensitivity kernels can also be used for acquisition design before exploration when specific parameters are under consideration.

Wave-equation migration velocity analysis for VTI media using optimized implicit finite difference |

2012-05-10