Frequency Dependent Rays of qP-Waves in 3D Weak Tilted Transversely Isotropic (TTI) Media

The paper provides a simple and numerically effective method to calculate frequency dependent rays of qP-wave in three-dimensional TTI media. Our method involves propagating a locally plane fragment of the wave front, which is sensitive to the distribution of the model parameters in some sub volume of the medium near a ray. The wavelength in each point on the ray determines the width of the sensitivity area. For numerical realization we apply approximate expressions for phase and group velocities which are valid for weak TTI media. Numerical experiments demonstrate the effectiveness of the proposed approach.