We obtain practical expressions for the correct evaluation of dynamic stresses by using the polarization-optical method in structurally anisotropic media. It is shown that the influence of anisotropy on the character of wave fields of stresses in the subsurface zone manifests itself as a 1.28-fold increase (as compared with the isotropic case) in the stresses sigma_k formed on the contour in the case where a plane P-wave falls on the free boundary of the plate which coincides with the principal axis of orthotropy E_(max). If the P-wave falls on the free boundary in the direction of orthotropy E_(min) then the values of the contour stresses sigma_k in the anisotropic plate are close to the corresponding values obtained for the isotropic plate.
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