GNGTS 2024 - Atti del 42° Convegno Nazionale

Session 1.1 GNGTS 2024 a strong earthquake was felt in Filicudi with some damage. He added that a member of the civil engineers would be sent to verify the damage (ACS TUC). Almost four months later, on October 9th, the Prefect sent a report to Rome with the results of two trips conducted by members of the Civil Engineers Department. According to that document, on Filicudi Island, more than 80% of the buildings were somehow damaged: 60% of the total had light damage, while 17% were heavily damaged, and 4% should be demolished (ACS. MInt.). This scenario is sufcient for estmatng an intensity level of 7 MCS, encompassing the entre island. However, considering Pecorini as the most impacted place (according to De Fiore), allows for the applicaton of the general efects to this locality. On the contrary, for the European Macroseismic Scale (EMS98), the percentage of houses afected and the degree of damage in an urban entty is crucial for estmatng the macroseismic intensity. In this case probably the most damaged houses could be situated in Pecorini and the intensity could reach 8 EMS98. Yet, it is only a hypothesis. In the broader macroseismic scenario, it is noteworthy that the nearby islands of Alicudi and Salina felt the earthquake strongly, though it did not cause any damage. According to the macroseismic postcards (UCMG), in Salina, people fed from their houses, while in Stromboli, individuals felt the earthquake both inside and outside their homes, without experiencing fear. Additonally, the Palermitan newspaper L'Ora reported that all residents in Lipari felt a strong earthquake. The following Table shows the estmated intensites (MCS) for the Aeolian archipelago considering the localites indicated by the sources (Pecorini a Mare, Lipari) or the more important of each island (Santa Marina Salina, San Vincenzo, Alicudi Porto). Table 2. Macroseismic Intensites for the Aeolian Earthquake on June 19th, 1916. Località Lat. Lon. Int. MCS Pecorini a Mare 38.563 14.567 7 Alicudi Porto 38.535 14.361 5 Santa Marina Salina 38.562 14.873 5 Lipari 38.467 14.955 4-5 Stromboli (San Vincenzo) 38.806 15.235 4