GNGTS 2013 - Atti del 32° Convegno Nazionale

Finally, as already said above, BB data are being collected in selected sites of the town: acceleration spectra of far earthquakes will then be compared with the ones furnished by the FERB/INGV seismometer. The ratio between the “roving” temporary MOBFE station spectra and those pertaining to FERB, which is laid on the local bedrock, will allow to experimentally estimate local amplification of seismic waves. Acknowledgements. The authors are grateful to the Administration of Province of Ferrara, Civil protection Department and to the Municipalities of Argenta, Bondeno, Ferrara and Comacchio for the financial support. We thank Mr. G. Polese for field assistance. References Abu Zeid N., Bignardi S., Caputo R., Mantovani A., Tarabusi G., Santarato G., 2013. Acquisition of shear waves velocity profile across the Ferrara-Casaglia anticline. Poster presented at the final congress of 2012-2013 seismological projects, Roma, Italy (http://www.socgeol.it/300/2012/news/convegno-finale-dei-progetti-sismologici-2012-2013.html) . Accaino F., Baradello L., 2013. Detailed 2D velocity profile of the uppermost crustal portions of the Ferrara Arc, ob- tained from analysis of multichannel seismic reflection profiles. Poster presented at the final congress of 2012-2013 seismological projects, Roma, Italy. (http://www.socgeol.it/300/2012/news/convegno-finale-dei-progetti-sismologi- ci-2012-2013.html). Amorosi A., Pavesi M., 2010. Aquifer stratigraphy from the middle-late Pleistocene succession of the Po Basin. Mem. Descr. Carta. Geol. D’It. XC, pp. 7-20. CNR-PFG (Progetto Finalizzato Geodinamica) (1991). Synthetic structural-kinematic map of Italy. tructural model of Italy, Sheet n. 5. S.El.Ca., Florence. Konno K., Ohmachi T., 1998. Ground-motion characteristics estimated from spectral ratio between horizontal and vertical components of microtremor, Bull. seism. Soc. Am., 88-1, 228-241. Regione Emilia-Romagna and ENI-AGIP (1998). Riserve idriche sotterranee della Regione Emilia-Romagna . Di Dio G. (Ed.), S.El.Ca. (Florence), pp. 120. Preliminary results of seismic response analyses at “Santa Maria di Collemaggio” Basilica (L’Aquila, Italy) S. Amoroso 1 , I. Gaudiosi 2,3 , G. Milana 4 , M. Tallini 2 1 Istituto Nazionale di Geofisica e Vulcanologia, L’Aquila, Italy 2 Department of Civil, Architectural and Environmental Engineering, University of L’Aquila, Italy 3 Istituto Nazionale di Geofisica e Vulcanologia, Cosenza, Italy 4 Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy Introduction. The Basilica of Santa Maria di Collemaggio is an important cultural heritage site, considered as an extraordinary example of Romanic Art in the Abruzzo Region (Italy). Erected in the second half of the XII century, it suffered numerous transformations partly due to the damages incurred as result of several earthquakes. During the April 6, 2009 L’Aquila earthquake ( M W = 6.3), the Basilica was strongly damaged and in particular the area of the transept collapsed causing the fall of the dome. This paper illustrates the preliminary results of seismic response analyses carried out at Santa Maria di Collemaggio Basilica, by using EERA (Bardet et al. , 2000), a monodimensional (1D) code, and QUAD4M (Hudson et al. , 1994), a bi-dimensional (2D) software. In this respect, Eni is financing the project “Ripartire da Collemaggio” for the restoration of this historical building. The project includes a deep geological, geotechnical and geophysical investigations, still ongoing (AA.VV ., 2013), that complete the information on L’Aquila subsoil already provided by numerous studies carried on in downtown L’Aquila (MS–AQ Working Group, 2010; Amoroso et al. , 2010, 2014; Cardarelli e Cercato, 2010; Monaco et al. , 2012, 2013; Santucci de Magistris et al. , 2013; Milana et al. , 2011). As a result, 1D and 2D analyses compare simulated vs experimental transfer functions in order to validate the proposed model and to verify the presence of local site effects, that can affect L’Aquila basin seismic response. Geological, geotechnical and geophysical investigations. The area of study was deeply investigated before and after L’Aquila earthquake. In particular, during the past several soundings were carried out for the Botanical Garden part of Santa Maria di Collemaggio 172 GNGTS 2013 S essione 2.2