The Project SIGMA (Sistema Integrato di sensori in ambiente cloud per la Gestione Multirischio
Avanzata) arises from the fields of Information and Communications Technologies (ICT) and advanced
applications for the control, monitoring and management of high-risk processes of natural and social origin.
SIGMA is a multilevel architecture whose main aim is the acquisition, integration and processing of
heterogeneous data from different sources (seismic, volcanic, meteorologic, hydric, pluvial, car traffic,
marine traffic, and so on) to manage and elaborate risk mitigation strategies which are important for the
emergency management planning. Within the several experimental activities included in the project, there is
the designing and realization of a prototype of application platform specialized to provide the operating
procedures and software to the public administrations and the industrial companies, for constantly
monitoring both the anthropic and natural phenomena in Sicily. In this framework, of course, the seismic risk
analysis plays a very important role since Sicily is one of the Italian regions with high seismic risk.
Seismic risk assessment may be approached in two different ways: i) as average seismic risk of the
buildings and facilities in question during the period considered, combining the vulnerability of different
building types and the seismic hazard for the site, which are then expressed in terms of the effects of the
events derived from an earthquake catalogue that exceed a specified threshold during a given period; ii) as
estimated damage of the buildings and the critical facilities using a scenario input described in terms of the
source parameters of the hypocenter as location, magnitude, and so on.
Here we deal with the hazard calculation through the code CRISIS (Ordaz, Aguilar and Arboleda) and
with the code PROSCEN (PRObabilistic SCENario, [Rotondi and Zonno, 2010]) to obtain earthquake
scenario to be used in the latter approach. Indeed, an earthquake scenario is a planning tool that helps
decision makers to visualize the specific impact of an earthquake based on the scientific knowledge. An
earthquake scenario creates a picture that the members of community can recognize and, at the same time,
improves the communication between the scientific, emergency management and policy communities to
seismic risk reduction
