Multichannel Analysis of Surface Waves (MASW)

MASW is a non-invasive geophysical method used to evaluate the shear-wave velocity profile of subsurface materials. It is widely applied in geotechnical and seismic site investigations to assess ground stiffness, identify weak soil zones, and support foundation design. MASW works by analyzing surface waves generated on the ground and recorded through an array of geophones. This method is quick, cost-effective, and suitable for both shallow and moderately deep investigations.
 

Key aspects include:

  • Evaluation of shear-wave velocity (Vs) profiles
  • Identification of soil stiffness and layering
  • Ideal for seismic site classification and liquefaction assessment
  • Non-destructive and rapid data acquisition
  • Useful in urban environments with minimal disruption
  • Applicable to depths typically ranging from 0 to 30 meters