The Amatrice 2016 seismic sequence: a preliminary look at the mainshock and aftershocks distribution

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Maddalena Michele
Raffaele Di Stefano
Lauro Chiaraluce
Marco Cattaneo
Pasquale De Gori
Giancarlo Monachesi
Diana Latorre
Simone Marzorati
Luisa Valoroso
Chiara Ladina
Claudio Chiarabba
Valentino Lauciani
Massimo Fares

Abstract

We relocated the aftershocks of the MW 6.0 Amatrice 2016 mainshock by inverting with a non-linear probabilitstic method P- and S-arrival time readings produced and released in near realtime by the analyst seismologists of IGNV on duty in the seismic monitoring room. Earthquakes distribution shows the activation of a normal fault system with a main SW-dipping fault extending from Amatrice to NW of Accumoli village for a total length of 40 km. On the northern portion of the main fault hanging-wall volume, the structure become more complex activating an antithetic fault below the Norcia basin. It is worth nothing that below 8-9 km of depth, the whole fault system has an almost continuous sub-horizontal layer interested by an intense seismic activity, about 2 km thick.

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How to Cite
1.
Michele M, Di Stefano R, Chiaraluce L, Cattaneo M, De Gori P, Monachesi G, Latorre D, Marzorati S, Valoroso L, Ladina C, Chiarabba C, Lauciani V, Fares M. The Amatrice 2016 seismic sequence: a preliminary look at the mainshock and aftershocks distribution. Ann. Geophys. [Internet]. 2016Nov.25 [cited 2021Sep.17];59. Available from: https://www.annalsofgeophysics.eu/index.php/annals/article/view/7227
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Letters

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