About Multi-channel Analysis of Surface Waves (MASW)
Multi-channel analysis of surface waves (MASW) is a seismic technique used to investigate the shallow subsurface. The method calculates the shear wave velocity profile of the subsurface through the recording of propagating surface waves and dispersion analysis.
Surface waves has been used for decades to determine the shear wave velocity profile of the subsurface. In the 1980s, researchers developed the MASW technique, which uses a linear array of geophones to measure surface waves. This technique has since become a standard geophysical method for investigating the shallow subsurface.
The surface waves survey method is a non-disruptive, cost-effective way to investigate the shallow subsurface. The technique can be used to map the shear wave velocity and determine the depth to bedrock. Shear wave velocities measured with MASW can be then used to estimate the strength and stiffness of soils and rocks through the calculation of the maximum shear modulus.
The surface waves method is often used in conjunction with other geophysical methods, such as seismic refraction and/or electrical resistivity tomography, to obtain a more complete picture of the shallow subsurface.
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