GNGTS 2024 - Atti del 42° Convegno Nazionale

Session 1.1 GNGTS 2024 Among the earthquakes with greater depth, i.e. greater than 80 km, only those of high magnitude greater than Mw 7.3 are detected by HPD (botom plot, Fig. 3). Figure 3 – Top: M W versus epicentral distance (km) of earthquakes detected by HPD installed at boreholes S13 and S14 from May 2015 to December 2022. The blue line is the detecton level obtained from De Luca et al. (2016), while the gray line refers to the detecton level obtained from Manga and Wang (2015). A and B refer to the main cluster (see the text). Botom plot: hypocentral depth (km) vs epicentral distance (km) of the same events populaton reported in the top plot. Red and green crosses represent earthquakes observed and not observed by the HPD, respectvely.