Shear wave splitting
Physical phenomenon / From Wikipedia, the free encyclopedia
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Shear wave splitting, also called seismic birefringence, is the phenomenon that occurs when a polarized shear wave enters an anisotropic medium (Fig. 1). The incident shear wave splits into two polarized shear waves (Fig. 2). Shear wave splitting is typically used as a tool for testing the anisotropy of an area of interest. These measurements reflect the degree of anisotropy and lead to a better understanding of the area's crack density and orientation or crystal alignment.[1] We[who?] 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.