GNGTS 2023 - Atti del 41° Convegno Nazionale

Session 1.1 GNGTS 2023 in the identification of the time), localized in Marostica, with 20 points where effects were recorded and a maximum intensity of 5-6 MCS degrees; the other 'new' earthquake is that of 11 June 1897, which occurred at 13:00 GMT in the Asolo area. In this case, the maximum intensity, reached in Follina and Quero Vas, was 5 MCS degrees, with a total of 25 documented locations. Based on the new geographical distribution of macroseismic intensities, the new epicentral parameters (epicentral location and magnitude) for each earthquake considered were calculated using the BOXER code (Gasperini et al., 2010) (Tab. 2). The comparison between the magnitudes resulting from this work and those in CPTI15 shows a general downsizing of this value by a few tenths for each earthquake, except for the one at 11.45 GMT on 11 June 1897 for which there is a slight increase, from Mw 4.44 to 4.51. In conclusion, the results of the work can be considered overall very satisfactory, leaving little or no room for improving knowledge. CPTI15 BARA022 Data Ora Area Mdp Ix Mdp Ix 1861.05.19 19:45 Asolano ALBI001 2 6 2 5 1887.03.29 08:58 Marostica - - - 20 5-6 1887.04.14 01:15 Bassano del Grappa ALBI001 9 6 10 5 1897.06.11 11:45 Asolano ALBI003 47 5-6 53 6 1897.06.11 13:00 Asolano - - - 25 5 1900.03.04 17:00 Trevigiano AMGNDT995 98 6-7 111 6 1919.07.17 12:06 Asolano MOLAL008 7 4-5 9 5 1921.09.12 00:25 Trevigiano AMGNDT995 3 3-4 6 5 Tab. 1 Numerical comparison on the basis of data used from the CPTI15 catalogue and the present study.