Southern Italy has been hit by several destructive historical earthquakes that produced tsunamis with amplitudes as high as 5-10 m (Fig.1). For some of the most powerful events, the source remains uncertain. In this region, a NW dipping subduction is observed, indicated by a Wadati-Benioff plane up to> 500 km deep (Fig. 1), as well as by tomography and the presence of a volcanic arc. active, the Aeolian Islands.