GNGTS 2019 - Atti del 38° Convegno Nazionale

352 GNGTS 2019 S essione 2.2 References Benkaci N., E. H. Oubaiche, J. Chatelain, R. Bensalem, D. Benouar, K. Abbes; 2018. Non-Stability and Non- Reproducibility of Ambient Vibration HVSR Peaks in Algiers (Algeria). J. Earthquake Engineering, doi: 10.1080/13632469.2018.153790. Bonnefoy-Claudet S., Cornou, C. , Bard, P. Y. , Cotton, F., Moczo, P., Kristek, J., and Fäh, D.; 2006a. H/V ratio: A tool for site effects evaluation. Results from 1-D noise simulations. Geophys. J. Int., 167 (2), 827-837, DOI:10.1111/ j.1365-246X.2006.03154.x. Burjanek J., B. Edwards, D. Fah; 2014. Empirical evidence of local seismic effects at sites with pronounced topography: a systematic approach. Geophys. J. Int. 197, 608–619. doi: 10.1093/gji/ggu014. Cara, F., Di Giulio, G., Milana, G., Bordoni, P., Haines, J., Rovelli, A.; 2010. “On the stability and reproducibility of the horizontal-to-vertical spectral ratios on ambient noise: Case study of Cavola, Northern Italy,” Bull. Seism. Soc. Am. 100 (3), 1263–1275. doi:10.1785/0120090086. Chavez-Garcia F.J., L.R. Sanchez, D. Hatzfeld; 1996. Topographic site effects and HVSR. A comparison between observations and theory. Bull. Seism. Soc. Am., 86, 5, 1559-1573. Guillier, B., J.-L. Chatelain, S. Bonnefoy-Claudet, and E. Haghshenas; 2007. Use of ambient noise: From spectral amplitude variability to H/V stability, J. Earthquake Eng. 11, no. 6, 925–942. Mucciarelli, M.; 1998. Reliability and applicability of Nakamura’s technique using microtremors: an experimental approach, J. Earthquake Eng. 2, 625–638. Mucciarelli M, M.R. Gallipoli; 2001. A critical review of 10 years of microtremor HVSR technique. Boll. Geofis. Teo. App., Vol. 42, n. 3-4, pp. 255-266. Mucciarelli M., M. R. Gallipoli, M. Arcieri; 2003. The Stability of the Horizontal-to-Vertical Spectral Ratio of Triggered Noise and Earthquake Recordings. Bull. Seism. Soc. Am., Vol. 93, No. 3, pp. 1407–1412. Nakamura, Y.; 1989. A method for dynamic characteristics estimations of subsurface using microtremors on the ground surface. Q. Rep. Railway Tech. Res. Inst. Japan 30, 25–33. Panzera, F., Lombardo, G. & Rigano, R.; 2011. Evidence of topographic effects through the analysis of ambient noise measurements, Seism. Res. Lett., 82, 413–419, doi:10.1785/gssrl.82.3.413. Paolucci R.; 2002. Amplification of earthquake ground motion by steep topographic irregularities. Earthquake Engineering and Structural Dynamics, 31:1831–1853 (DOI: 10.1002/eqe.192). Parolai, S., Richwalski, S. M., Milkereit, C. and Bormann, P.; 2004. Assessment of the stability of H/V spectral ratios from ambient noise and comparison with earthquake data in the Cologne area (Germany). Tectonophysics 390(1), 57–73. doi:10.1016/j.tecto.2004.03.024. Pedersen H., B. Le Brun, D. Hatzfeld, M. Campillo, P.Y. Bard; 1994. Ground motion amplitude across ridges. BSSA 84, 6, 1786-1800. SESAME WP12 team; 2004. Guidelines for the implementation of the H/V spectral ratio technique on ambient vibrations-measurements, processing and interpretation. SESAME European research project WP12 -Deliverable D23.12. Spudich, P., Hellweg, M., and Lee, W. H. K.; 1996. Directional topographic site response at Tarzana observed in aftershocks of the 1994 Northridge, California, earthquake: implications for mainshock motions, Bull. Seism. Soc. Am., 86(1B), S193–S208. ASSESSMENT OF SEISMIC VULNERABILITY OF SMALL EARTH DAMS IN PIEDMONT REGION: FROM A SIMPLIFIED METHOD TO ADVANCED TOOLS R.M. Cosentini, S. Foti, F. Passeri Department of Structural, Geotechnical and Building Engineering, Politecnico di Torino, Turin, Italy Introduction. The project “ReSba” (Resilienza degli Sbarramenti) is aimed at improving the knowledge regarding the risks of small dams and the related resilience of the community. The Italian Code for Dams (NTD, 2014) defines “small dams” those up to 15 m high and a reservoir lower than 10 6 m 3 . Despite the small cubage of the reservoir volume, the risk associated with their potential rupture can be considerable. Indeed, they are often located along slopes close to populated areas. For these reasons, the evaluation of their associated seismic risk is of paramount importance. In this respect, the activity conducted at the Politecnico di Torino is to