The focal mechanism of the 7 September 1920, M w 6.5 earthquake: insights into the seismotectonics of the Lunigiana-Garfagnana area, Tuscany, Italy

To understand the seismotectonics and the seismic hazard of the study sector of the Northern Apennines (Italy), one of the most important earthquakes of magnitude Mw = 6.5 which struck the Lunigiana and Garfagnana areas (Tuscany) on 7 September 1920 should be studied. Given the early instrumental epoch of the event, neither geometric and kinematic information on the fault-source nor its...