Characterization of site conditions (soil class, VS30, velocity profiles) for 33 stations from the French permanent accelerometric network (RAP) using surface-wave methods

Abstract

Data provided by accelerometric networks are important for seismic hazard assessment. The correct use of accelerometric signals is conditioned by the station site metadata quality (i.e., soil class, V S30 , velocity profiles, and other relevant information that can help to quantify site effects). In France, the permanent accelerometric network consists of about 150 stations. Thirty-three of these stations in the southern half of France have been characterized, using surface-wave-based methods that allow derivation of velocity profiles from dispersion curves of surface waves. The computation of dispersion curves and their subsequent inversion in terms of shear-wave velocity profiles has allowed estimation of V S30 values and designation of soil classes, which include the corresponding uncertainties. From a methodological point of view, this survey leads to the following recommendations: (1)

Building a three dimensional model of the active Plio-Quaternary basin of Argostoli (Cephalonia Island, Greece): An integrated geophysical and geological approach

“…The whole data acquisition for each array last about few hours. This kind of geometry has also been used in several other characterization surveys (Hollender et al, 2018). The MASW measurements were performed within the Arrays 1 to 5 and on two rock site locations (see outcropping area of karstified Cretaceous limestone (C) with a relatively flat topography and low layer dip.…”

Optimization of a Simulation Code Coupling Extended Source (k−2) and Empirical Green’s Functions: Application to the Case of the Middle Durance Fault

“…• weathering factors, even on originally healthy rock, that induce lower velocity values within the shallowest layers (first few meters) beneath the surface (see e.g., Hollender et al 2017). These effects can induce large amplifications of ground motion at high frequency (e.g.…”

Subsoil classification and geotechnical zonation for Guadalajara City, México: Vs30, soil fundamental periods, 3D structure and profiles

“…Although these techniques are available and have been used since the late 1950s, better instrumentation and computational resources developed in the last four decades have resulted in a dramatic increase in the quantity and quality of array recording (e.g. Flores Estrella and Aguirre Gonzalez 2003;Scherbaum, Hinzen and Ohrnberger 2003;Bonnefoy-Claudet et al 2006;Kanli et al 2006;Mohamed et al 2013;Hollender et al 2018;Vicêncio, Teves-Costa and Sá Caetano 2018;Mahajan and Kumar 2018;Pergalani et al 2020;Sairam et al 2019).…”

“…Presently, V S30 is a well-accepted and robust parameter used to characterize local site response (e.g. Kanli et al 2006;Rošer and Gosar 2010;Hollender et al 2018;Sairam et al 2019). It is used for building codes, earthquake resistant design, shake maps or, like in this work, to define a seismic zonation within an urban area.…”