Abstract：Anisotropic parameters of the porous rocks with larger scale fractures are usually frequency-dependent in the seismic frequency range.Based on the vector convolutional model for shear-wave propagating through an anisotropic medium,developed by Zeng and MacBeth(1993),we develop a new algebraic technique for extracting shear-wave splitting parameters from VSP multi-component data in frequency-dependent anisotropic medium.By this new technique,anisotropic parameters,including polarization direction of the shear-waves and time-delay between fast and slow shear-waves,can be estimated for each frequency in the frequency domain.This avoids errors caused by band-passed filter in the conventional technique.The feasibility and validity of the technique is tested on synthetic seismograms and a comparison with the conventional technique is also given.The results demonstrate that the frequency-dependent anisotropy shear-wave splitting parameters can be extracted directly from seismic data by this technique.
