Site Effects and Widespread Susceptibility to Permanent
Engineering Geology 270 (2020) 105583 Contents lists available at ScienceDirect Engineering Geology journal homepage: www.elsevier.com/locate/enggeo Site effects and widespread susceptibility to permanent coseismic deformation in the Avezzano town (Fucino basin, Central Italy): Constraints T from detailed geological study ⁎ Deborah Di Naccioa, , Daniela Famianib, Francesca Liberic, Paolo Boncioc,d, Fabrizio Carab, Antonio De Santisc, Giuseppe Di Giulioa, Fabrizio Galadinib, Giuliano Milanab, Gianluigi Rosatellic, Maurizio Vassalloa a Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Sismologia e Tettonofisica, L'Aquila, Italy b Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Sismologia e Tettonofisica, Roma, Italy c Università “G. D'Annunzio” Chieti - Pescara, Department DiSPUTer Chieti, Italy d CRUST - Centro inteRUniversitario per l'analisi SismoTettonica tridimensionale con applicazioni territoriali, Chieti, Italy ARTICLE INFO ABSTRACT Keywords: The Quaternary Fucino basin in the central Apennines of Italy was struck by one of the strongest Italian Seismic microzonation earthquakes of the last millennium (1915, Mw 7.0). The Avezzano town, ~ 9.0 km away from the epicentre, was Site effects completely destroyed. In the surrounding area sizable coseismic surface deformation were catalogued, attesting Local seismic hazard the severity of earthquake, the proximity to the causative fault and the geological and geomorphological Subsurface geological model complexity of a basin filled by thick lacustrine sediments. Central Italy The Avezzano area provides a case study to understand how shallow subsurface geology influences site effects Fucino basin in a deep Quaternary continental basin environment, thus being of potential interest for similar geologic contexts worldwide. Within the investigated area, different possible earthquake-induced effects can occur, such as a) stratigraphic amplifications in a wide range of resonance frequencies (from 0.4 to 15–20 Hz); b) liquefaction; c) coseismic surface faulting; d) basin-edge effects; and e) slope instability.
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