Una metodologia di indagine basata su tecniche NDT per la mitigazione del rischio sismico di beni storici soggetti a tutela

Sommario In questo lavoro viene presentata una metodologia di indagine NDT (acronimo inglese di Non Destructing Testing), basata su tecniche classiche di misura, telerilevamento prossimale e satellitare ad alta risoluzione spaziale, analisi sismogenetiche ed indagini geofisiche, per la mitigazione del rischio sismico di edifici storici monumentali soggetti a tutela. I risultati sperimentali, ottenuti per il caso di studio del complesso monumentale di Sant’Agostino ubicato nella città di Cosenza, dimostrano l’efficacia dell’approccio proposto sia per applicazioni correnti (il monitoraggio materiale e strutturale di un manufatto), sia per applicazioni emergenti (mitigazione del rischio sismico di beni storici)

A multidisciplinary non-invasive approach in geoarchaeology conducted on the archaeological area of Selinunte

Southwestern Sicily is an area of infrequent seismic activity. Only an earthquake occurred in the Belice valley on 13 January 1968 is reported in the historic earthquake catalogues (see e.g. [1]) as severe event, that is characterized by moderate-high energy (M=6.5) and significant epicentral and local macroseismic intensities (Io=X and I=VII-VIII of the MCS scale). Nevertheless, some studies (e.g. [2]) suggest that probably at least two earthquakes struck this area, between the fourth century B.C. and the early Middle Ages, with energy able to damage and produce collapse in some temples of Selinunte. In this framework, we propose the use of non-invasive approaches in geoarchaeology for detecting and measuring structural damages in walls and foundations of Selinunte Acropolis, in order to identify any effects due to historic earthquakes. The methodology consists of an integration of landscape analysis, remote sensing and geophysical methods useful for dating important ancient seismic events. The intents of this multidisciplinary research are: 1) the detailed analysis of the most important structures and the landscape, also to assess kinematics behaviour of the masonry segments and their defects (cracks, disintegration of the original mortar, replacement of ashlars, etc.) and 2) the analysis of the seismic site response in order to assess potential amplification phenomena on the ground motion. The preliminary results seem to show significant residuals on the walls on the East side of the Acropolis, where also the geological and stratigraphical setting provide amplification effects in correspondence of frequency range typical of the earthquakes and for manmade structures

Una metodologia di indagine basata su tecniche NDT per la mitigazione del rischio sismico di beni storici soggetti a tutela

Sommario In questo lavoro viene presentata una metodologia di indagine NDT (acronimo inglese di Non Destructing Testing), basata su tecniche classiche di misura, telerilevamento prossimale e satellitare ad alta risoluzione spaziale, analisi sismogenetiche ed indagini geofisiche, per la mitigazione del rischio sismico di edifici storici monumentali soggetti a tutela. I risultati sperimentali, ottenuti per il caso di studio del complesso monumentale di Sant’Agostino ubicato nella città di Cosenza, dimostrano l’efficacia dell’approccio proposto sia per applicazioni correnti (il monitoraggio materiale e strutturale di un manufatto), sia per applicazioni emergenti (mitigazione del rischio sismico di beni storici).Il presente lavoro è finanziato dal Ministero dell'Università, dell'Istruzione e della Ricerca (MIUR) nell'ambito del programma PON R&C 2007-2013 che finanzia al 100% il progetto PON "MASSIMO"-"Monitoraggio in Area Sismica di Sistemi Monumentali"Published44-576A. Monitoraggio ambientale, sicurezza e territorioN/A or not JCRrestricte

Etna 2003 Field Campaign: Calibration and Validation of spaceborne and airborne Instruments for volcanic Applications

The field measurements campaign made in July 2003 on Etna, Vulcano Island and Campi Flegrei was dedicated to the calibration and validation of airborne and spaceborne data. The campaign activities were relevant part of two ASI funded projects: 1) FASA, dedicated to airborne system and data validation/calibration 2) HypSEO, dedicated to multispectral an hyperspectral spaceborne data validation/calibration on specific test areas. The airborne campaign was organized in the frame of a three-year project funded by ASI and DLR as it represented the flight test of the FASA system, which combines a Fourier interferometer in the MIR-TIR region and an imager (ABAS). The main objectives of this proposal are: 1. Design and implementation of an airborne system for the Fourier Spectrometer MIROR and ABAS (Bird Airborne Simulator); 2. Airborne Operational tests of the FASA system over the main Italian volcanic areas (i.e. Etna, Stromboli and Vulcano) and possibly on controlled forest fires (Germany); 3. Organization of the necessary ground campaign for calibration and validation of the acquired data; 4. Development of the algorithms for the selection of the “spectral windows” and for the determination of the presence of some gasses: in particular SO2, CO2, H2S and other gasses of volcanic origin