Refraction seismic

Seismic Tomography is a geophysical method for subsoil exploration through waves transmission. It consists in generating seismic waves by hitting the ground (manually or using mechanical systems such as portable Propelled Energy Generators and Accelerated Weight Drop Systems or thumper trucks) and detecting them in different locations through geophones equally spaced along a profile. This technique allows recording the subsoil compressional velocity Vp.