Projections Analysis of surface waves (PASW) – Description of the method and case studies

This study is intended to describe the PASW method and the results of its application. This technique is based on both the analysis of the dispersion and frequency dependence of the Rayleigh wave ellipticity. Unlike for SASW / MASW (Spectral / Multichannel Analysis of Surface Waves), during carrying out the PASW method there is no need for a priori information on the pressure wave velocity (or, in other words, on the Poisson's ratio) of the underlying layers. Thus, this technology allows one to reconstruct the velocity profiles of two body waves.