Blind broad-band (0–10 Hz) numerical prediction of the 3-D near field seismic response of anMW6.0 extended fault scenario: application to the nuclear site of Cadarache (France)
Year: 2022
Type: article
Abstract: SUMMARY In this paper, physics-based numerical simulation (PBS) is employed to render a broad-band (0–10 Hz) realization of the near-field seismic response of the experimental nuclear site of Cadarache, located nearby the active Middle Durance Fault (southeastern France). The sensitivity of the earthquake numerical model to geological features is investigated by comparison with geophysical measurements and past aftershock and by highlighting the amplification induced by the soft sediments below Cadarache. The blind prediction of an MW6 target earthquake is approached by synthesizing four different finite-fault scenarios. The outcome is compared to the standard ground motion prediction equations (GMPEs), unveiling a possible GMPE overestimation of the pseudospectral acceleration ordinates at short natural periods, supporting the actual need to integrate synthetic and empirical predictions when direct observations are not available.
DOI: 10.1093/gji/ggac346
Institutions: Centre National de la Recherche Scientifique, Université Paris-Saclay, CentraleSupélec, Laboratoire de Mécanique Paris-Saclay, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, CEA Cadarache, Institut des Sciences de la Terre, Institut de Recherche pour le Développement, Université Savoie Mont Blanc
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,204
Funder: Agence Nationale de la Recherche
OpenAlex ID: W4293583751