GNGTS 2023 - Atti del 41° Convegno Nazionale

Session 1.1 GNGTS 2023 results of HVSR and MASW surveys, supplemented by a drone survey to map in detail the Segesta site. Figure 1 a) Map of the archeological site of Segesta. The geophysical acquisitions were carried out in three different areas of the site: 1) the Aphrodite Temple, 2) the Acropolis, 3) the Mango Sanctuary; b) Seismotectonic map of western Sicily showing seismicity from the CPTI catalogue (Rovida et al., 2021), active faults shown as red lines and seismogenic sources from the DISS database (DISS Working Group, 2021). ATF Adventure Thrust Front; CGFS: Capo Granitola Fault System; MGTF: Montagna Grande Thrust Front; SFS Sciacca Fault System; SFTB: Sicilian Fold and Thrust Belt; SVCS: San Vito lo Capo - Sciacca System. Seismotectonics of western Sicily According to the Italian seismic catalogues, western Sicily is a low seismic moment release region, characterized by an intermediate seismic hazard (Stucchi et al., 2004). Before the 1968 Belice seismic sequence, western Sicily was considered a seismically quiescent region, due to the lack of historical recordings of past earthquakes (CPTI15, Rovida et al., 2021; CFTI 5 Med, Guidoboni et al., 2019). After the 1968 events, instrumental records revealed that the seismicity of south-western Sicily was characterized by sparse low-moderate magnitude earthquakes (ISIDe Working group, 2007; http://terremoti.ingv.it/search ) .