Applications of the Marchenko Method in Anisotropic Media

The Marchenko method has received significant attention in geophysics due to its specific ability to retrieve the accurate Green's functions directly from data without a subsurface focal point to have an actual physical receiver located at it. However, its application capacity in anisotropic medium remains unexplored. Given the increasing complexity of exploration tasks, it has become imperative to investigate its feasibility of deploying the Marchenko method in anisotropic media. This study aims to assess the applicability of the Marchenko method in retrieving Green's functions in anisotropic medium with a synthetic dataset simulated over a tilted transversely isotropic (TTI) model. The Green's functions are retrieved based on the assumptions that the data are acquired from either an isotropic or TTI medium model. A comparison analysis reveals that the first arrivals obtained based on the TTI medium assumption provides more accurate travel times and amplitudes, resulting in a more accurate reconstruction of the Green's function. The study demonstrates that Marchenko method can be effectively applied in anisotropic medium.