GNGTS 2015 - Atti del 34° Convegno Nazionale

GNGTS 2015 S essione 3.3 139 HVSR curve was modeled according to Arai and Tokimatsu (2004), thus considering the amount of Love waves as one of the variables (for details see Dal Moro, 2014). The Rayleigh- wave effective dispersion curve (retrieved from MAAM and confirmed by the ESAC) was modelled according to Tokimatsu et al. (1992) and Love waves (from the active acquisition) via FVS analysis. The outcomes of the performed joint analysis are summarized in Fig. 3, where the overall good agreement for all the three considered components is quite apparent (the identified V S model is summarized in Tab. 3). Fig. 3 – Joint analysis of the three considered components (the retrieved model is reported in Tab. 3): a) acquired active traces (vertical Z, radial R and transversal T components); b) field and synthetic HVSR curves; c) field (from MAAM) and synthetic Rayleigh-wave (vertical component) effective dispersion curves; d) field (background colors) and synthetic (overlain black contour lines) Love-wave group velocity spectra from the active acquisition (FVS analysis). Tab. 3 - Retrieved V S model down to a depth of 50 m. thickness (m) V S (m/s) 0.2 88 0.4 118 1 105 0.8 115 1 117 1 119 4.5 150 5.2 170 4 381 31.9 488