Surface wave dispersion analysis in engineering dates back to the 1950s. It took several decades before the technique was developed and used on a large scale.

The main objective is to measure the stiffness of the soil as it is traversed by surface waves and the soil damping factor. The basic idea is that surface waves are primarily governed by S-waves, which are directly related to the stiffness of the material.

In the 1980s, Spectral Analysis of Surface Waves (SASW) was developed, and in the 1990s, with the advent of multi-channel seismographs, such as our DoReMi, Multichannel Analysis of Surface Waves (MASW) began.

Example of a sismogram for MASW analisys.

Example of MASW scattering spectrum