A matrix-decomposition-based one-way wave propagator for VTI media
Seismic imaging in vertically transversely isotropic (VTI) media is crucial for accurately reconstructing subsurface structures but remains challenging due to the complex wave propagation behavior inherent in anisotropic media. This study presents a novel method for constructing one-way wave propagation operators in VTI media, utilizing matrix decomposition and eigenvalue analysis. By applying eigenvalue decomposition, the method efficiently suppresses evanescent and pseudo-S waves, improving the stability and precision of wavefield extrapolation. Numerical simulations and field data applications demonstrate that the proposed method effectively reduces phase dispersion artifacts while enhancing the continuity of reflection interfaces, especially in challenging geological environments such as salt domes and overthrust models. When compared to traditional one-way methods, the proposed technique offers superior imaging quality, making it a promising tool for high-resolution seismic imaging in complex anisotropic media. These results demonstrate the potential of the method to improve seismic imaging in practical anisotropic subsurface environments.
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