MASW and Mapping of Shear Wave Velocity

What is MASW?

Multichannel Analysis of seismic waves

Shear Wave velocity ( Vs). Vs is one of the elastic constants , ( Young’s modulus). V

Vs is an indicator of the ground strength (stiffness) and load-bearing capacity.

  • Rock head Depth
  • Soil Stiffness
  • Void Location

A method to map soils strength without drilling.

Measure the Shear wave velocity of the soils using a geophysical survey and very smart processing.

Fill in gaps between drill holes – corelate to SPT hammer data and soil strength data.

A very powerful and fast geophysical method.

Active mode – to 25m

Passive mode to more than 100m. No need for sources uses natural ground noise source


  • Rock Base and Geotechnical data from MASW
  • Mapping Rock head to 100m or more
  • Determine soil stiffness and strength directly from Geophysical Data
  • Liquefaction Potential
  • Correlate with SPT /Drill Hole and other site information

Multichannel Analysis of Shear Wave data or MASW

MASW is a non-destructive method use advance or as adjunct to drilling to give soil and rock depth and soil strength.

Contact Info

For general info on project management and consulting contact Grant Roberts:

Ph: +855 10 863111 +6421 710 922


Or fill in our reach out form for more information (survey questionnaire on its way)