GNGTS 2014 - Atti del 33° Convegno Nazionale

28 GNGTS 2014 S essione 1.1 of the sources consulted for the sequence, it is clear that on the evening of February 7, after the third main shock above mentioned, at 22 Italian time (15 GMT), another earthquake of intensity 7-8 damaged the towns of Scilla (Minasi, 1783), Messina (Gallo, 1784; Torreani, 1783), Sant’Agata di Reggio (Palestino,1877) and was strongly felt in Roccavaldina (Corrao, 1784), Monteleone [nowadays Vibo Valentia: Vivenzio (1788)], Santa Sofia (Masci, 1783) and Soriano Serre (Mercalli, 1897). The epicentre of this quake is located between Reggio Calabria and Scilla (Fig. 3a). On the beach of Reggio the soil sank and abundant spring water flow in the Giunchi area in the northern historical centre of the city (Roscitano, 1783). In most of the catalogues (e.g. Boschi et al. , 2005; Rovida et al. , 2011) these localities are mentioned together with the earthquake at 13.10 (GMT) earthquake of the same day. The March 1 strong earthquake was preceded by a shock on February 27 (I = 6-7), located northernmost. It caused lesions to country buildings between the Angitola river and Borgia Fig. 3 – Some minor events of the 1783 seismic sequence: a) the February 7 at 22 Italian time (15 GMT) shock; b) the February 27 shock c) the April 26 shock, d) the July 30 1783 shock.