Materiali per un catalogo dei terremoti italiani. Terremoti del Trevigiano e Bellunese tra ‘700 e ‘900
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
For almost twenty years, the Italian community of historical seismologists has been developing a wide and articulated research programme for updating and improving the macroseismic database used by compilers of the national earthquake catalogue to calculate increasingly accurate and reliable epicentral parameters. The initiatives carried out include: in­depth studies of single earthquakes, detailed reconstructions of the ‘seismic histories’ of single localities/areas, and large­ scale study campaigns. These aimed at i) conducting preliminary (or ‘expeditious’) studies for historical earthquakes above the damage threshold that currently lack them, ii) updating or improving outdated or preliminary data, and iii) identifying and studying as many earthquakes as possible that exceeded the damage threshold but still ‘unknown’ to historical seismology and hence to the national seismic catalogue. The present work gathers the results of research on eight earthquakes located in the present Provinces of Treviso and Belluno between 1709 and 1949. Seven of these are included in the current version of the CPTI15 catalogue based on preliminary reference studies. The eighth and most recent one, instead, falls into the category of ‘neglected’ earthquakes, that is, those that were mistakenly excluded from the parametric reference catalogue in the 1980s [Postpischl, 1985] and that, to date, remain absent from the current version of the parametric catalogue. The work is in continuity with a previous study of ‘minor’ seismicity in the Asolo area and, together with it, makes a significant contribution to advancing the knowledge of the historical seismicity of the Veneto and Friuli Pre­Alps.
Sismologia storica, Trevigiano, Catalogo parametrico, Historical seismology, Treviso area, Parametric catalogue