Comparison of ground models estimated from surface wave inversion using synthetic microtremors

A parametric study on synthetic microtremors is proposed to compare the suitability of two ground models estimated from two surface wave inversions. Synthetic microtremors for array stations are calculated by controlling the magnitude of input sources applied on the ground surface, through the parameter “ratio of forces” RF. The value for RF is determined by the minimum misfit between synthetic vertical/horizontal component dispersion curves and, by quantitative comparison of the value of synthetic H/V spectral ratio predominant frequency and its spectral amplitude, with the experimental ones obtained at a Swiss site.

► Comparison of ground models is proposed using synthetic microtremors.
► The ratio of forces RF is used to fit synthetic dispersion curve to experimental one.
► Rayleigh dispersion inversion is enhanced by the H/V predominant frequency.