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AuthorsSbarra, P.* 
De Rubeis, V.* 
Di Luzio, E.* 
Mancini, M.* 
Moscatelli, M.* 
Stigliano, F.* 
Tosi, P.* 
Vallone, R* 
TitleMacroseismic effects highlight site response in Rome and its geological signature
Issue Date2012
Series/Report no.2/62 (2012)
Intensity residuals
Urban geosciences
Macroseismic effects
Amplification areas
Subject Classification04. Solid Earth::04.04. Geology::04.04.09. Structural geology 
04. Solid Earth::04.06. Seismology::04.06.04. Ground motion 
04. Solid Earth::04.06. Seismology::04.06.11. Seismic risk 
AbstractA detailed analysis of the earthquake effects on the urban area of Rome has been conducted for the L’Aquila sequence, which occurred in April 2009, by using an on-line macroseismic questionnaire. Intensity residuals calculated using the mainshock and four aftershocks are analyzed in the light of a very accurate and original geological reconstruction of the subsoil of Rome based on a large amount of wells. The aim of this work is to highlight ground motion amplification areas and to find a correlation with the geological settings at a sub-regional scale, putting in evidence the extreme complexity of the phenomenon and the difficulty of making a simplified model. Correlations between amplification areas and both near-surface and deep geology were found. Moreover, the detailed scale of investigation has permitted us to find a correlation between seismic amplification in recent alluvial settings and subsiding zones, and between heard seismic sound and Tiber alluvial sediments.
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