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Earthquake monitoring in Italy: integration of a temporary seismic experiment into national real-time surveillance, the example of FocusX temporary land-network

Authors

Margheriti,  Lucia
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Moretti,  Milena
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Piccinini,  Davide
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Latorre,  Diana
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Alparone,  Salvatore Claudio
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Cocina,  Ornella
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Costanzo,  Antonio
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Gutscher,  Marc Andre
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

La Rocca,  Mario
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Marchetti,  Alessandro
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Murphy,  Shane
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Nardi,  Anna
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Pastori,  Marina
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Focus,  Working group
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

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Citation

Margheriti, L., Moretti, M., Piccinini, D., Latorre, D., Alparone, S. C., Cocina, O., Costanzo, A., Gutscher, M. A., La Rocca, M., Marchetti, A., Murphy, S., Nardi, A., Pastori, M., Focus, W. g. (2023): Earthquake monitoring in Italy: integration of a temporary seismic experiment into national real-time surveillance, the example of FocusX temporary land-network, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-0947


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016527
Abstract
The INGV is the operational center for earthquake monitoring in Italy, it operates the Italian National Seismic Network and other networks at different scales and is a primary node of EIDA for archiving and distributing seismic recordings. INGV provides earthquake information to the Department of Civil Protection and to the public. In the frame of the FOCUS (Fiber Optic Cable Use for seafloor studies of earthquake hazard and deformation) project, we deployed a temporary seismic network, FXLand (1J), for a passive seismological experiment to record regional seismicity and teleseismic events. This experiment aims to improve the detection of seismicity; the accuracy of earthquake locations, and to define the crustal structure of the region. The FXLand network (https://doi.org/10.13127/SD/O5QWM6WJCD) is integrated in real-time into the INGV surveillance system. In the deployment period 23rd December 2021- 2nd February 2023, 1186 regional events were located and 153 6+ teleseismic earthquakes occurred (terremoti.ingv.it). We present the analysis of three seismic sequences: one starting on December 23rd 2021 with a magnitude 4.3 near Catania lasting about ten days, one occurred in the Messina Strait on May31st June 1st 2022, the third one in the Ionian Sea from February to April 2022. We applied a template matching technique which doubled the number of detected events in the first two sequences; for the seismicity in the Ionian Sea, to improve detection and locations we are awaiting the data from the FXOBS (XH), a network of broadband and short period OBSs deployed in the Ionian Sea.