High-Resolution seismic arrays in Amatrice village for a better estimation of site effects

Abstract

The August 24 , 2016 M 6.0 Amatrice earthquake is the beginning of the 2016-2018 central Italy seismic sequence. One of the first places to be highly damaged is the wide territory of Amatrice municipality. Seismic Microzonation studies (SM) started during the early stages of emergency with the installation of the 3A temporary seismic network (Cara et al. 2019) and continued with an intense campaign of multidisciplinary studies (Priolo et al. 2020). On the light of the information retrieved, this work shows the results of additional geophysical investigations carried out in specific sites of Amatrice village including the historical center, the most damaged area. We applied f-k and MSPAC analysis to data collected at 5 sites to obtain dispersion curves and invert them to retrieve the subsoil Vs profile. All results were therefore integrated with the already available geological and geophysical information to better detail the subsoil model.