Selection of reference anisotropic parameters for wavefield extrapolation by Lloyd's algorithm

Yaxun Tang and Robert G. Clapp

tang@sep.stanford.edu, bob@sep.stanford.edu

ABSTRACT

We propose a method for selecting reference anisotropic parameters in laterally varying anisotropic media for mixed Fourier-space domain wavefield extrapolation. We treat the selection problem as a quantization procedure, and use a modified version of the 3D Lloyd's algoritm for reference-parameter selections. We demonstrate that our method yields a more accurate discription of the anisotropy model with fewer reference parameters than the uniform sampling approach. Real data examples illustrate the performance of our method.