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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

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

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 Creators:
Margheriti, Lucia1, Author
Moretti, Milena1, Author
Piccinini, Davide1, Author
Latorre, Diana1, Author
Alparone, Salvatore Claudio1, Author
Cocina, Ornella1, Author
Costanzo, Antonio1, Author
Gutscher, Marc Andre1, Author
La Rocca, Mario1, Author
Marchetti, Alessandro1, Author
Murphy, Shane1, Author
Nardi, Anna1, Author
Pastori, Marina1, Author
Focus, Working group1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 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.

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Language(s): eng - English
 Dates: 2023
 Publication Status: Finally published
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 Identifiers: DOI: 10.57757/IUGG23-0947
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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
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Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
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