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Authors: Cheloni, Daniele* 
De Novellis, Vincenzo* 
Albano, Matteo* 
Antonioli, Andrea* 
Anzidei, Marco* 
Atzori, Simone* 
Avallone, Antonio* 
Bignami, Christian* 
Bonano, M.* 
Calcaterra, S.* 
Castaldo, Raffaele* 
Casu, Francesco* 
Cecere, Gianpaolo* 
De Luca, C.* 
Devoti, Roberto* 
Di Bucci, D.* 
Esposito, Alessandra* 
Galvani, Alessandro* 
Gambino, P.* 
Giuliani, R.* 
Lanari, R.* 
Manunta, M.* 
Manzo, M.* 
Mattone, M.* 
Montuori, Antonio* 
Pepe, A.* 
Pepe, S.* 
Pezzo, Giuseppe* 
Pietrantonio, Grazia* 
Polcari, M.* 
Riguzzi, Federica* 
Salvi, Stefano* 
Sepe, Vincenzo* 
Serpelloni, Enrico* 
Solaro, Giuseppe* 
Stramondo, Salvatore* 
Tizzani, P.* 
Tolomei, Cristiano* 
Trasatti, Elisa* 
Valerio, E.* 
Zinno, I.* 
Doglioni, Carlo* 
Title: Geodetic model of the 2016 Central Italy earthquake sequence inferred from InSAR and GPS data
Issue Date: 2017
Series/Report no.: /44 (2017)
DOI: 10.1002/2017GL073580
Abstract: We investigate a large geodetic data set of interferometric synthetic aperture radar (InSAR) and GPS measurements to determine the source parameters for the three main shocks of the 2016 Central Italy earthquake sequence on 24 August and 26 and 30 October (Mw 6.1, 5.9, and 6.5,respectively). Our preferred model is consistent with the activation of four main coseismic asperities belonging to the SW dipping normal fault system associated with the Mount Gorzano-Mount Vettore-Mount Bove alignment. Additional slip, equivalent to aMw~ 6.1–6.2 earthquake, on a secondary (1) NE dipping antithetic fault and/or (2) on a WNW dipping low-angle fault in the hanging wall of the main system is required to better reproduce the complex deformation pattern associated with the greatest seismic event (the Mw 6.5 earthquake). The recognition of ancillary faults involved in the sequence suggests a complex interaction in the activated crustal volume between the main normal faults and the secondary structures and a partitioning of strain release.
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