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Authors: Bergamaschi, F.* 
Cultrera, G.* 
Luzi, L.* 
Azzara, R. M.* 
Ameri, G.* 
Augliera, P.* 
Bordoni, P.* 
Cara, F.* 
Cogliano, R.* 
D'Alema, E.* 
Di Giacomo, D.* 
Di Giulio, G.* 
Fodarella, A.* 
Franceschina, G.* 
Galadini, F.* 
Gallipoli, M. R.* 
Gori, S.* 
Harabaglia, P.* 
Ladina, C.* 
Lovati, S.* 
Marzorati, S.* 
Massa, M.* 
Milana, G.* 
Mucciarelli, M.* 
Pacor, F.* 
Parolai, S.* 
Picozzi, M.* 
Pilz, M.* 
Pucillo, S.* 
Puglia, R.* 
Riccio, G.* 
Sobiesiak, M.* 
Title: Evaluation of site effects in the Aterno river valley (Central Italy) from aftershocks of the 2009 L'Aquila earthquake
Journal: Bulletin of Earthquake Engineering 
Series/Report no.: Special Issue 2010: L'Aquila Earthquake (2011)
Publisher: Springer
Issue Date: 2011
Keywords: l'Aquila earthquake
ground shaking
site effects
Subject Classification04. Solid Earth::04.06. Seismology::04.06.04. Ground motion 
Abstract: A temporary network of 33 seismic stations was deployed in the area struck by the 6th April 2009, Mw 6.3, L’Aquila earthquake (central Italy), with the aim to investigate the site amplification within the Aterno river Valley. The seismograms of 18 earthquakes recorded by 14 of the 33 stations were used to evaluate the average horizontal to vertical spectral ratio (HVSR) for each site and the standard horizontal spectral ratio (SSR) between a site and a reference station. The obtained results have been compared to the geological and geophysical information in order to explain the resonance frequencies and the amplification levels with respect to surface geology of the valley. The result indicate that there is no uniform pattern of amplification, due to the complex geologic setting, as the thickness and degree of cementation of the deposits is highly variable. As consequence, a large number of the local site response is observed, therefore it is very difficult to elaborate a unique model that can explain such a variability of the amplification.
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Bergamaschi_et_al_earthprints.docMain article, tables comments, figures comments90 kBMicrosoft WordView/Open
Fig1.pngFigura 1627.5 kBimage/pngThumbnail
Fig2_events.pngFigure 2276.4 kBimage/png
Fig3.pngFigure 31.67 MBimage/png
Fig4_profiles.aiFigure 41.32 MBPostscript
Fig5_sections.aiFigure 5255.36 kBPostscript
Fig6_ref-sites.aiFigure 6347.93 kBPostscript
Fig7_MI05.aiFigure 7280.3 kBPostscript
Fig8_HV-SSR.aiFigure 8822.69 kBPostscript
Fig9_map.aiFigure 91.26 MBPostscript
Fig10.aiFigure 10270.87 kBPostscript
Table1.docTable 1207.5 kBMicrosoft WordView/Open
Table2.docTable 231 kBMicrosoft WordView/Open
Table3.docTable 341 kBMicrosoft WordView/Open
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