Unambiguous Determination of the Vs Profile via Joint Analysis of Multi-component Active and Passive Seismic Data

The determination of the shear-wave velocity profile is a major request in site characterisation studies for geotechnical and seismic-hazard studies and it is often accomplished via surface-wave analysis according to Multichannel Analysis of Surface Waves (MASW). In order to overcome non-uniqueness of the solution and possible interpretative issues, for the present study we consider the joint analysis of different and independent multi-component data: Rayleigh and Love waves (from MASW and frequency-wavenumber analysis), Horizontal-to-Vertical Spectral Ratio (HVSR) and p- and s-wave Seismic Refraction Tomography (pSRT and sSRT). Obtained Vs profile is eventually compared with the data obtained from a Vertical Seismic Profiling (VSP).