Coseismic effects of the 2016 Amatrice seismic sequence: first geological results

EMERGEO W.G. :, S. Pucci, P.M. De Martini, R. Civico, R. Nappi, T. Ricci, F. Villani, C.A. Brunori, M. Caciagli, V. Sapia, F.R. Cinti, M. Moro, D. Di Naccio, S. Gori, E. Falcucci, R. Vallone, F. Mazzarini, S. Tarquini, P. Del Carlo, V. Kastelic, M. Carafa, R. De Ritis, G. Gaudiosi, R. Nave, G. Alessio, P. Burrato, A. Smedile, L. Alfonsi, P. Vannoli, M. Pignone, S. Pinzi, U. Fracassi, L. Pizzimenti, M.T. Mariucci, N. Pagliuca, A. Sciarra, R. Carluccio, I. Nicolosi, M. Chiappini, F. D’Ajello Caracciolo, G. Pezzo, A. Patera, R. Azzaro, D. Pantosti, P. Montone, M. Saroli, L. Lo Sardo, M. Lancia

Abstract


Since the beginning of the ongoing Amatrice seismic sequence on August 24, 2016, initiated by a Mw 6.0 normal faulting earthquake, the EMERGEO Working Group (an INGV team devoted to earthquake aftermath geological survey) set off to investigate any coseismic effects on the natural environment. Up to now, we surveyed about 750 km2 and collected more than 3200 geological observations as differently oriented tectonic fractures together with intermediate- to small- sized landslides, that were mapped in the whole area. The most impressive coseismic evidence was found along the known active Mt. Vettore fault system, where surface ruptures with clear vertical/horizontal offset were observed for more than 5 km, while unclear and discontinuous coseismic features were recorded along the Laga Mts. Fault systems.


Keywords


Coseismic ruptures, Amatrice earthquake, Earthquake geology

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References


DOI: https://doi.org/10.4401/ag-7195
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Published by INGV, Istituto Nazionale di Geofisica e Vulcanologia - ISSN: 2037-416X