$S_H$ refracted waves

The practical requirements and data processing for $S_H$ waves are very similar to the $P-S_V$ case. Shear waves polarized in the transversal direction are generated by beating on both sides of a loaded wood timber oriented perpendicular to the recording line (Jongmans (1992)). Both sides are used to remove the P-wave contribution by the means of negative stacking. The signals are recorded on horizontal sensors the main axis of which is oriented perpendicular to the receiver line. The processing of the traveltime-distance curves is exactly the same as for $P-S_V$ refraction.