GNGTS 2024 - Atti del 42° Convegno Nazionale

Session 3.2 GNGTS 2024 Fig. 2 – The acoustc spectrogram recorded on April 18 and the morning of 19, 2023, includes the moment of a small seismic event that occurred at Mirabella, M=2.1, about 20 km from Mefte. The Mirabella earthquake tme is indicated by a vertcal cyan arrow. Main eigenfrequencies and sudden pufs on the power spectra are indicated.