The shear wave velocity (Vs) of the subsurface can be a critical parameter for calculating liquefaction potential, site amplification, site class, Vs30 and for many other engineering purposes. Southern Geophysical Ltd specialises in obtaining shear wave information about the subsurface. The Vs can be measured directly, using downhole shear wave tests, or indirectly using Multi-channel Analysis of Surface Waves (MASW).

We have extensive experience in:

  • Downhole shear wave testing (maximum depth 130m)
  • Cross hole shear wave testing
  • CPT rig cross hole shear wave testing
  • Multichannel Analysis of Surface Waves (MASW)