International Federation of Digital Seismograph Networks

ZM (2017-2019): Seismic Emergency for Ischia by Sismiko

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FDSN Network Information

FDSN code ZM (2017-2019) Operated by Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Network name Seismic Emergency for Ischia by Sismiko (SEISk) Deployment region Italy
Start date 2017-08-26 End date 2019-12-31
Short description

On August 21, 2017, at 18:57 UTC, an earthquake of MD 4.0 (Mw 3.9) occurred on Ischia, a volcanic island located in southern Italy. The earthquake caused two victims, several buildings collapsed and most of the damages were circumscribed to the areas of uptown Casamicciola, a district of the island. After the earthquake of August 21 2017, the Sismiko group, which is the coordinating group of the emergency seismic networks of INGV, was activated and four seismic mobile stations were installed integrated with the permanent network on the island. At the beginning, all the mobile stations, SEISk network, acquired locally and were equipped with short period sensors and one accelerometer, but in a few month, the seismic signals for some of these stations were transmitted in real time to the INGV monitoring acquisition room for surveillance purposes. Although most of the seismicity followed the Mw 3.9 mainshock lasted a few days, the addition of the SEISk improved the network performance, both, for the localization analysis, and for the detection of very low magnitude earthquakes.

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