CWP-761 Point-source radiation in attenuative anisotropic media

Important insights into point-source radiation in attenuative anisotropic media can be gained by applying asymptotic methods. Here, we derive the asymptotic Green’s function in homogeneous, attenuative, arbitrarily anisotropic media us-ing the steepest-descent method. The saddle-point condition helps describe the behavior of the slowness and group-velocity vectors of the P-, S1-, and S2-waves in the far field. We test the accuracy of the asymptotic analysis by comparing it with the ray-perturbation method for P-waves in transversely isotropic media. Key words: attenuation, anisotropy, aysmptotic analysis, inhomogeneity angl