%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Hollender, F.
%A Cornou, Cécile
%A Dechamp, A.
%A Oghalaei, K.
%A Renalier, F.
%A Maufroy, E.
%A Burnouf, C.
%A Thomassin, S.
%A Wathelet, Marc
%A Bard, P. Y.
%A Boutin, V.
%A Desbordes, C.
%A Douste-Bacque, I.
%A Foundotos, L.
%A Guyonnet-Benaize, C.
%A Perron, V.
%A Regnier, J.
%A Roulle, A.
%A Langlais, M.
%A Sicilia, D.
%T Characterization of site conditions (soil class, V-s30, velocity profiles) for 33 stations from the French permanent accelerometric network (RAP) using surface-wave methods
%D 2018
%L fdi:010073025
%G ENG
%J Bulletin of Earthquake Engineering
%@ 1570-761X
%K Accelerometric network ; Surface-wave methods ; Velocity profile ; V-s30
%K FRANCE
%M ISI:000432210000010
%N 6
%P 2337-2365
%R 10.1007/s10518-017-0135-5
%U https://www.documentation.ird.fr/hor/fdi:010073025
%> https://www.documentation.ird.fr/intranet/publi/2018/06/010073025.pdf
%V 16
%W Horizon (IRD)
%X 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) perform both active (multi-analysis surface waves) and passive (ambient vibration arrays) measurements to derive dispersion curves in a broadband frequency range; (2) perform active acquisitions for both vertical (Rayleigh wave) and horizontal (Love wave) polarities. Even when the logistic contexts are sometimes difficult, the use of surface-wave-based methods is suitable for station-site characterization, even on rock sites. In comparison with previous studies that have mainly estimated V-s30 indirectly, the new values here are globally lower, but the EC8-A class sites remain numerous. However, even on rock sites, high frequency amplifications may affect accelerometric records, due to the shallow relatively softer layers.
%$ 066 ; 064