GNGTS 2023 - Atti del 41° Convegno Nazionale

Session 3.2 ___ GNGTS 2023 Figure 1 – Example application of the developed workflow to obtain h and Vs,h directly from the experimental dispersion curve and combined f0 information: a) Vs,h profile from the experimental dispersion curve through the W-D transform (blue dots and dotted line) and comparison with the same from the inverted Vs profile (black line); b) f profile (blue dots and dotted line) obtained from b); d) Vs profile from inversion (black line). Red arrows show the back fitting of the experimental f0 and resulting h and Vs,h determination (red dashed lines) from the adopted procedure. We compare the obtained values of h and Vs,h with the ones from a state of the art inversion of the same data over an on purpose developed dataset extracted from the ITACA (ITalian ACcelerometric Archive) database. Obtained results show the effectiveness and reliability of the proposed workflow. Finally, we discuss advantages and shortcomings in its application, related to the uncertainty of the classical inversion procedures. REFERENCES Comina, C., Foti, S., Passeri, F., Socco, L.V. Time-weighted average shear wave velocity profiles from surface wave tests through a wavelength-depth transformation (2022) Soil Dynamics and Earthquake Engineering, 158, art. no. 107262. Passeri F., Comina C., Foti S., Socco L.V. (2021) The Polito Surface Wave flat ‑ file Database (PSWD): statistical properties of test results and some inter ‑ method comparisons, Bulletin of Earthquake Engineering, 19, pages 2343–2370. Socco, L. V., Comina, C., and Khosro Anjom, F., 2017. Time-average velocity estimation through surface-wave analysis: Part 1—S-wave velocity, Geophysics 82, U49-U59.