Seismic hazard disaggregation in the Molise region, Italy: the case study of Campobasso

Ohrid, Republic of Macedonia

Large scale experimentations play a relevant role in the earthquake engineering research, similarly Structural
Health Monitoring is able to give information of real structures. A few geotechnical structures are documented,
because only data on seismic permanent deformations are available. The present paper deals with seismic hazard
of the site of the Student House at University of Molise, where a geotechnical monitoring system has been
designed and is currently under implementation. It is aimed at refining the seismic hazard characterization for
identifying a set of relevant earthquakes for the theoretical analysis of the structure. Reference earthquakes
expressed in terms of magnitude (M), distance (R) and ε, were therefore investigated. Uniform hazard spectra at
different structural periods for a 475-year return period were disaggregated. Shapes of both the joint and marginal
probability density functions were studied and the first two modes of M, R and ε were extracted and discussed.

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