GNGTS 2016 - Atti del 35° Convegno Nazionale

118 GNGTS 2016 S essione 1.1 Historical earthquakes. In north-eastern Sicily very few earthquakes with Mw > 5 are reported (Tab. 1). Some of these events are located east of the Tindari-Line, near the village of Naso. The seismic history of this area starts from the 1490 and looking at the temporal distribution of the events (Fig. 2) it is evident that the catalogue is not complete. Only two events with Mw > 6 are reported and both occurred after the 1786. Most of the earthquakes are poorly defined ��� ��������� ���������� ��� ����� �� ���� ����������� ������� ��������� and catalogue parameters are based on 2-10 observation points. Obviously information on the hit area is more complete going in more recent time� ��� �������� �� ��� . T�� �������� �� ��� he analysis of the events ����� ���� ���� ��� �������� �� ��� ���� ���� ��� ��� �������� ������ �� ��� ���� ������� shows that they are centered in the same area and are probably linked to the same seismic source located around the Gulf of Patti area. Therefore it is likely that the ���������� ��� unexpected low magnitude results from lacking of data. The 1739 Naso earthquake . This earthquake is known to parametric catalogues (e.g. Rovida et al. , 2016) and has been the subject of several studies (e.g. Guidoboni et al ., 2007). According to aforementioned works, Naso and San Marco d’Alunzio were heavily damaged and in nearby locations the earthquake was simply felt (Fig. 3). A new study (Barbano et al. , 2016) identified two new sources, describing the event (Breve ristretto, 1739; Meli, sec. XVIII) not used by previous studies. ���� ����� ������ ������� ���� ��� ���������� Meli (sec. XVIII) reports that the earthquake “fece grandissimo danno nella marina, mentre che al Serro del dottor don Antonio Cardinale al Stazzone caddero due case ed un casaleno olim solarato. Nel serro di Marzo caddero tre case, nell’altro serro seguente ne cadde una, con aver tirato una parte di mura di un’altra casa; nell’altro serro dello Tab. 1 – Earthquakes of Mw > 5.0 in northern Sicily in the Gulf of Patti after CPTI15 (Rovida et al. , 2016). Year Mo Da Epicentral Area Np Imx Lat Lon Io Mw 1490 06 10 Sicilia Settentionale 4 7 37,816 14,614 7 5.1 1613 08 25 Monti Nebrodi 2 9 38,122 14,788 8 5,56 1718 02 20 Sicilia orientale 7 6-7 37,599 14,619 6-7 5,25 1739 05 10 Monti Nebrodi 6 8-9 38,098 14,744 8 5,41 1780 03 28 Sicilia nord-orientale 10 7-8 37,866 15,316 7-8 5,52 1780 09 14 Golfo di Patti 5 8 38,081 14,982 7-8 5,33 1786 03 10 Golfo di Patti 10 9 38,102 15,021 9 6,14 1823 03 05 Sicilia settentrionale 107 8-9 38,185 14,344 8  5.81 1908 12 10 Monti Peloritani 64 7 38,059 15,036 7 5,11 1967 10 31 Monti Nebrodi 60 8 37,862 14,413 8 5,33 1978 04 15 Golfo di Patti 330 8 38,385 15,086 8  6,03 1980 05 28 Tirreno meridionale 44 6-7 38,483 14,270 5-6 5.66 2002 09 06 Tirreno meridionale 132 6 38,364 13,687 6 5.92 Fig. 2 – Temporal distribution of earthquakes in the area around the Gulf of Patti according to CPTI15 Catalogue (Rovida et al. , 2016).