Numerical analysis of local geology effects on ground motion prediction

It is well known that to better characterize the seismic phenomenon several parameters such as site effects have to be considered. Indeed, during the wave propagation process, the soil near the surface can have an effect of amplification or de-amplification on the ground motion. This may be related to soil type (soft), geology or soil heterogeneity among others. This work aims to study numerically the effect of local geology on ground motion prediction at a regional scale. The studied site is located at Kefalonia Island (Greece). This site is well characterized and instrumented by several sensors placed in such a way that allow to measure the effect of spatial variability on the recorded signals.The present work places itself within the framework of the French research project SINAPS (Séismes et Installations Nucléaires, Améliorer et Préserver la Sûreté) managed by the National Research Agency under the program Future Investments (SINAPS@ reference No.ANR-11-RSNR-0022). This project has been initiated by the members of the institute SEISM (https://www.institut-seism.fr/en/) after the nuclear disaster of Fukushima (Japan, 2011). It aims to enhance the scientific background in the area of the nuclear safety and radiation protection. The project contains different work packages. Our present work is part of the work package "Non-Linear Sites Effects and Soil-Structure Interaction"