Geophysics

Measures the velocity of seismic waves between boreholes, the dynamic modulus of the ground mass for seismic and vibration design.

Measures the velocity of seismic waves along a single borehole: Vs and Vp profiles at the cost of a single hole.

Multichannel analysis of surface waves: Vs profile, Vs30 and seismic site class with no borehole required.