Shear wave splittingとは 意味・読み方・使い方

Shear wave splitting, also called seismic birefringence, is the phenomenon that occurs when a polarized shear wave enters an anisotropic media (Fig. 1). The incident shear wave splits into two polarized shear waves (Fig. 2). Shear wave splitting are typically used as a tool for testing the anisotropy of an area of interest. These measurements reflect the degree of anisotropy and leads to a better understanding of the area’s crack density and orientation or crystal alignment. We can think of the anisotropy of a particular area as a black box and the shear wave splitting measurements as a way of looking at what is in the box.