SISMIKO: emergency network deployment and data sharing for the 2016 central Italy seismic sequence

Milena Moretti, Silvia Pondrelli, Lucia Margheriti, Luigi Abruzzese, Mario Anselmi, Pierre Arroucau, Paola Baccheschi, Brian Baptie, Raffaele Bonadio, Andrea Bono, Augusto Bucci, Mauro Buttinelli, Marco Capello, Vincenzo Cardinale, Angelo Castagnozzi, Marco Cattaneo, Gianpaolo Cecere, Claudio Chiarabba, Lauro Chiaraluce, Giovanni Battista Cimini, Rocco Cogliano, Gianfranco Colasanti, Marco Colasanti, Fabio Criscuoli, Ezio D’Alema, Antonino D’Alessandro, Ciriaco D’Ambrosio, Peter Danecek, Mariagrazia De Caro, Pasquale De Gori, Alberto Delladio, Gaetano De Luca, Giovanni De Luca, Martina Demartin, Maria Di Nezza, Raffaele Di Stefano, Luigi Falco, Massimo Fares, Massimo Frapiccini, Alberto Frepoli, Danilo Galluzzo, Edoardo Giandomenico, Lucian Giovani, Carlo Giunchi, Aladino Govoni, David Hawthorn, Chiara Ladina, Valentino Lauciani, Anthony Lindsay, Simone Mancini, Alfonso Giovanni Mandiello, Simone Marzorati, Marco Massa, Antonino Memmolo, Franco Migliari, Felice Minichiello, Giancarlo Monachesi, Caterina Montuori, Raffaele Moschillo, Shane Murphy, Nicola Mauro Pagliuca, Marina Pastori, Davide Piccinini, Ulderico Piccolini, Stefano Pintore, Giulio Poggiali, Sandro Rao, Gilberto Saccorotti, Margarita Segou, Andrea Serratore, Marcello Silvestri, Stefano Silvestri, Massimiliano Vallocchia, Luisa Valoroso, Luciano Zuccarello, Alberto Michelini, Salvatore Mazza

Abstract


At 01:36 UTC (03:36 local time) on August 24th 2016, an earthquake Mw 6.0 struck an extensive sector of the central Apennines (coordinates: latitude 42.70° N, longitude 13.23° E, 8.0 km depth). The earthquake caused about 300 casualties and severe damage to the historical buildings and economic activity in an area located near the borders of the Umbria, Lazio, Abruzzo and Marche regions. The Istituto Nazionale di Geofisica e Vulcanologia (INGV) located in few minutes the hypocenter near Accumoli, a small town in the province of Rieti. In the hours after the quake, dozens of events were recorded by the National Seismic Network (Rete Sismica Nazionale, RSN) of the INGV, many of which had a ML > 3.0. The density and coverage of the RSN in the epicentral area meant the epicenter and magnitude of the main event and subsequent shocks that followed it in the early hours of the seismic sequence were well constrained. However, in order to better constrain the localizations of the aftershock hypocenters, especially the depths, a denser seismic monitoring network was needed. Just after the mainshock, SISMIKO, the coordinating body of the emergency seismic network at INGV, was activated in order to install a temporary seismic network integrated with the existing permanent network in the epicentral area. From August the 24th to the 30th, SISMIKO deployed eighteen seismic stations, generally six components (equipped with both velocimeter and accelerometer), with thirteen of the seismic station transmitting in real-time to the INGV seismic monitoring room in Rome. The design and geometry of the temporary network was decided in consolation with other groups who were deploying seismic stations in the region, namely EMERSITO (a group studying site-effects), and the emergency Italian strong motion network (RAN) managed by the National Civil Protection Department (DPC). Further 25 BB temporary seismic stations were deployed by colleagues of the British Geological Survey (BGS) and the School of Geosciences, University of Edinburgh in collaboration with INGV. All data acquired from SISMIKO stations, are quickly available at the European Integrated Data Archive (EIDA). The data acquired by the SISMIKO stations were included in the preliminary analysis that was performed by the Bollettino Sismico Italiano (BSI), the Centro Nazionale Terremoti (CNT) staff working in Ancona, and the INGV-MI, described below.


Keywords


SISMIKO; Surveys, measurements and monitoring; Tectonics; Instruments and techniques; Rapid response seismic networks; Open data archives

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References


DOI: https://doi.org/10.4401/ag-7212
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Published by INGV, Istituto Nazionale di Geofisica e Vulcanologia - ISSN:  2037-416X