11. Damage due to shear waves extends to even greater distances in abdominal injuries in the WDMET data. 12. The wave is generated by horizontally striking an object on the ground surface to induce the shear wave . 13. In seismology longitudinal and shear waves are known as P-waves and S-waves, respectively, and are termed body waves. 14. Since the shear wave is the second fastest wave, it is sometimes referred to as the secondary wave. 15. This encodes the amplitude of the shear wave in the tissue in the phase of the MRI image. 16. It is followed by the more energetic but slower-moving S or shear wave that causes far more violent shaking. 17. The two types of seismic body waves are compressional waves ( P-waves ) and shear waves ( S-waves ). 18. "Use of refraction microtremor ( ReMi ) data for shear wave velocity determination at an urban bridge rehabilitation site" 19. S-wave refraction evaluates the shear wave generated by the seismic source located at a known distance from the array. 20. Hence, shear waves naturally " split " into separate arrivals with these two polarizations; in optics this is called birefringence.