Seismological investigations of the Pernicana Fault (Mt. Etna, Siciliy, Italy) inferred by high precise locations of the microseismicity

Rome

The analysis of seismicity due to the activation of Pernicana Fault in the period 1999-2009 (about 400 earthquakes) has provided useful information for the characterization of this structure. By applying different techniques of location and analysis of cross-correlation on waveforms of earthquakes, it was possible to highlight that the Pernicana Fault is actually composed of segments characterized by different releases of seismic energy. Moreover, the space-time analysis of the evolution of the seismicity showed evident correlation with the eruptive activity of the volcano and the dynamics of its eastern flank.