GNGTS 2016 - Atti del 35° Convegno Nazionale

GNGTS 2016 S essione 1.1 119 Stazzone ne caddero tre. Nel fondaco di Pietra di Roma cadde la camera alta verso occidente. La generalità poi delle case nella marina patì gran detrimento avendosi conquassato le mura, e molti angoli di case benché non caddero si disunirono e fu bisogno poi di rifabbricarsi.” �A historical map allowed identifying these small villages located in the nowadays site of Torrenova (Fig. 3). ������������ ��� ���������� ������ ������� � ���� ���� ������� ��� ������� ��� ��� Furthermore, the earthquake fairly damaged a vast area between the Nebrodi Mts and the Tyrrhenian coast: “ Quell’istesso che sin ora s’ha inteso aver successo in questa nostra terra, si sentì dalle terre vicine come Mirto, Frazzanò, Capri, Naso, da Longi, Alcara, come pure quelle della terra del Santissimo Salvatore, e quelle della terra di Sant’Angelo, non meno di questi di San Marco, si sentirono in Militello, benché non così gagliardi in san Fratello ” (Breve ristretto, 1739). ��� ������ �� ������ �������� �� ��� ������ ��� ��������� ����� � �� The number of places affected by the events was increased (from 6 to 15 points), and the seismic sequence better defined. The area hit by the earthquake was larger than known and macroseismic data suggest a location offshore of the event with a magnitude larger than the estimated one. Fig. 3 – The May 10, 1739 earthquake. Comparison of data (old) from the catalogue CPTI15 (Rovida et al. , 2016) and those (new) after our research (after Barbano et al. , 2016). Conclusion. New coeval sources describing the 1739 earthquake allow better defining its parameters suggesting that is magnitude is greater than reported in the parametric catalogue. The seismicity in the Gulf of Patti can be stronger than known, because using few intensity points on land to compute magnitudes the events can be underestimate. Other earthquakes for which we have little information such as the 1450, 1490, and 1613 events could be linked to the same source and could be stronger than appears from the scant available data. References Azzaro R., Barbano M.S., Camassi R., D’Amico S., MostaccioA., Piangiamore G., Scarfì L.; 2004 : The earthquake of 6 September 2002 and the seismic history of Palermo (Northern Sicily, Italy): Implications for the seismic hazard assessment of the city . J. Seism., 8 (4), 525-543. Barbano M.S., Castelli V., Pirrotta C.; 2016: Materiali per un catalogo di eruzioni di Vulcano e di terremoti delle isole Eolie e della Sicilia nordorientale (secc. XV-XIX) . Quaderni di Geofisica, in print.