Site Amplifications in the epicentral area of the 2016, M 6, Amatrice earthquake (Italy)

Roma

The first mainshock (Mw 6.0) of the 2016 Central Italy seismic sequence,
severely struck the Amatrice village and the surrounding localities. After a few days, some Italian
Institutions, coordinated by the “Center for Seismic Microzonation and its applications”, carried out several preparatory activities for seismic microzonation of the area. A temporary seismic network was installed that monitored about 50 sites in epicentral area. The network
produced a huge amount of records in a wide range of magnitude up to Mw 6.5. For about half
of the recording stations, detailed site characterization was undertaken, encompassing single station noise measurements and S-wave velocity profiles. The geological and geophysical data
together with the collected dataset of seismic signals were exploited to investigate the site
response of selected stations. Significant amplifications are found in the correspondence of several
sites that experienced a high level of damage (Imcs >IX), mainly at short and intermediate periods

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