Abstract
he recent advances in cloud computing have opened new opportunities in emergency management issues due to earthquakes. In this context, Geographic Information System (GIS) based solutions have been recently investigated, with the aim of the prevention and the reduction of seismic risk. The paper focuses on the results of the research project PRISMA - cloud PlatfoRms for Interoperable SMArt Government in which an innovative open source GIS system, based on the knowledge in the field of dynamic characterization of soil has been developed in order to assess the local seismic hazard and the seismic zonation of the Enna area in the south of Italy. The paper describes how the application of prospecting and surveying techniques allowed a decisive improvement in the geological knowledge of the area, contributing to define the subsoil model for the purposes of seismic microzonation. The seismic geotechnical characterization has been performed with laboratory tests including the resonant column and cyclic torsional shear test on undisturbed samples. The interpretation of geophysical and geotechnical data and their correlation with geological units are presented as microzonatic map. Finally, a wireless sensor network has been used for structural monitoring at the aim to highlight the significant benefits when the time available for access is limited, by representing an effective way of managing risks. All the data relating to the monitoring of the buildings and to the geological and geotechnical characterization are available on the web GIS platform, representing an important tool for the prevention and reduction of the seismic risk.
Highlights
In a high seismic hazard country, as Italy, with urban areas characterized by significant level of seismic vulnerability, the seismic zonation, monitoring local networks and earthquake early warning system, may allow the prevention and mitigation of the earthquakes effects [Castelli et al, 2013, 2016a, b, c; Castelli and Maugeri, 2008, 2013; Grasso et al, 2016; Grasso and Maugeri, 2014; Ferraro et al, 2016; Monaco et al 2011].Some recent examples of strong earthquakes in Italy include the central Italy earthquake of 24th August2016, the L’Aquila earthquake of the 6th April 2009, the Emilia Romagna earthquake of the 29th May 2012, the St
Seismic zonation, monitoring local networks and alert systems may allow the promotion of appropriate policies for the prevention and mitigation of the earthquakes effects, especially in a region with high seismic risk, as Sicily, and with an urban area characterized by high levels of seismic vulnerability
For several municipalities of the Province of Enna are available Down - Hole (DH), Multichannel Analysis of Surface Wave (MASW), Horizontal to Vertical Spectral Ratio (HVSR), Refraction Microtremor (REMI) and electrical tomography tests (Table 3)
Summary
In a high seismic hazard country, as Italy, with urban areas characterized by significant level of seismic vulnerability, the seismic zonation, monitoring local networks and earthquake early warning system, may allow the prevention and mitigation of the earthquakes effects [Castelli et al, 2013, 2016a, b, c; Castelli and Maugeri, 2008, 2013; Grasso et al, 2016; Grasso and Maugeri, 2014; Ferraro et al, 2016; Monaco et al 2011]. Earthquakes in Sicily are often among the main causes of land-slides, with particular reference to rockfalls Such phenomena represent, in turn, a further risk for population and for structures and infrastructures [Pappalardo et al, 2014; Pappalardo and Mineo, 2015]. Its architecture consists in a geospatial database system, a local GIS application for analyzing and modeling the seismic event and its impacts, a web-GIS module for sharing the geo-information among the public and private stakeholders and emergency managers involved in disaster impact assessment and response management With this aim, data available by previous studies and investigations, as well as, those deduced by the studies carried out within the Project PRISMA, have been organized in a database and geo-referenced. The results of resonant column, torsional shear and cyclic triaxial tests have provided the dynamic characterization of the subsoil and the normalized shear modulus G/G0-γ and damping ratio D-γ versus strain curves for an accurate seismic response of soil, taking into account the non-linear behavior
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
