Shear Wave (S-Wave) Animation



Deformation propagates.  Particle motion consists of alternating transverse motion.  Particle motion is perpendicular to the direction of propagation (transverse).  Transverse particle motion shown here is vertical but can be in any direction; however Earth’s layers tend to cause mostly vertical (SV) or horizontal (SH) shear motions.  Material returns to its original shape after wave passes.