GNGTS 2016 - Atti del 35° Convegno Nazionale

412 GNGTS 2016 S essione 2.2 Mauriello, P., and Patella, D.: Resistivity anomaly imaging by probability tomography,” Geophy. Prospect., 47 (3), 411–429, 1999. Mauriello, P., and Patella, D.: Imaging 3D structures by resistivity probability tomography, Proceedings of the 61st EAGE Conference and Technical Exhibition, Helsinki, Finland, June 1999. Mazzoli, S., Corrado, S., De Donatis, M., Scrocca, D., Butler, R.W.H., Di Bucci, D., Naso, G., Nicolai, C. and Zucconi, V.; 2000: Time and space variability of «thin-skinned » and «thick-skinned » thrust tectonics in the Apennines (Italy), Rend. Fis. Acc. Lincei, 11, 5-39. Michetti, A.M., Esposito, E., Guerrieri, L., Porfido, S., Serva, L., Tatevossian, R., Vittori, E., Audemard, F., Azuma, T., Clague, J., Comerci, V., Gurpinar, A., Mc Calpin, J., Mohammadioun, B., Morner, N.A., Ota, Y., and Roghozin, E.; 2007: Intensity Scale ESI 2007. Memorie Descrittive Carta Geologica d’Italia, Roma, 74, , 53 p. Porfido, S., Esposito, E., Vittori, E., Tranfaglia, G., Michetti, A.M., Blumetti, M., Ferreli, L., Guerrieri, L., and Serva, L.; 2002: Areal distribution of ground effects induced by strong earthquakes in the Southern Apennines (Italy). Surv. Geophys., 23 (6), 529-562. Serva, L., E. Vittori, V. Comerci, E. Esposito, L. Guerrieri, A. M. Michetti, B. Mohammadioun, S. Porfido, and R. E. Tatevossian (2015). Earthquake hazard and the Environmental Seismic Intensity (ESI) Scale, Pure Appl. Geophys. 1–37, doi: 10.1007/s00024-015-1177-8. Valente, E., Ascione, A., Ciotoli, G., Porfido, S. and Tavani, S.; 2015a: New data on the late Quaternary tectonics in the epicentral area of the December 2013 – January 2014 southern Matese seismic sequence (Southern Apennines), Rend. Online Soc. Geol. It., 36 (1), 79. Valente, E. Ascione, A., Bigi, S., Buscher, J., Ciotoli, G. and Porfido, S.; 2015b: The Mw 5, 2013 Matese earthquake epicentral area (southern Italy): new data on the earthquake ground effects and active tectonics framework, Miscellanea INGV, 27, 492-496.which in turn can influence soil gas concentrations at the surface (e.g., Baubron et al. , 2002; Analysis of the Site-City Interaction (SCI) in a recent urbanized area in Rome: preliminary considerations C. Varone 1 , L. Lenti 2 , S. Martino 1 , J.F. Semblat 2 1 Dpt. Earth Sciences and Research Center for the Geological Risks (CERI) of the University «Sapienza», Rome, Italy 2 Université Paris-Est LCPC/Institut Français des Sciences et Technologies des Transports, de l’Aménagement et des Réseaux (IFSTTAR)/ Departement GERS, Champs sur Marne, France This paper focuses on the evaluation of the Site-City Interaction (SCI - Bard et al. 2005, Guéguen andBard 2005, Kham et al., 2006; Semblat et al. , 2008), i.e. the influence of buildings on ground motion and on local seismic response. Site–City Interaction (SCI) includes the combined effects of basin, kinematic soil–structure interaction and inertial structure–soil interaction on a global scale (Bard et al., 2005). Kham et al. (2006) and Semblat et al. (2008) addressed to 2D numerical modelling aimed to evaluate the influence of the geometry and typology of buildings composing the urban complex indicating that SCI under double-resonance condition can lead to a significant variation of seismic wave field as compared to the free-field motion. The so far proposed studies have been mainly engineering based and highlighted that the SCI effects on the ground motion strongly depend on the urban configuration, on the city heterogeneity and on city density while the influence of the geological component on SCI has been simplified. The main goal of this paper is the evaluation of the SCI effects in the case of highly heterogeneous geological systems taking into account the geological as well engineering component. The selected case study is the Fosso di Vallerano valley in the southern part of Rome (Italy), a recently urbanized district of the city developed in the last decades. The alluvial basin is characterize by a complex and heterogeneous geological setting and hosts the “Europarco Business Park”, an urban complex composed by the highest building actually present in the city.