Campi Flegrei, Ingv:“Other seismic phenomena cannot be ruled out”

The INGV recalls that during the bradyseismic crisis of 1982-84, 1,300 seismic events per month were exceeded.Currently, however, around 450 events have been recorded in the last month

NAPLES - "At present there is no increase in the lifting speed which is currently 2 cm/month.Still at the current state, there are no changes in the trend in horizontal deformations or local deformations of the ground different from the previous trend".This is one of the passages contained in a note that theNational Institute of Geophysics and Volcanology has spread in the night in relation to the seismic swarm which has been underway in the Campi Flegrei area since 7.51pm yesterday, May 20th and which, up to 00:31 on 21 May, "had preliminarily recorded around 150 earthquakes with duration Magnitude (Md) = 0.0 (95 localised) and a maximum Magnitude (Md) of 4.4 (±0.3).The Md 4.4 event was the most energetic among those recorded since the beginning of the current bradyseismic crisis that began in 2005. The epicenter is located inside the Solfatara at a depth of 2.6 km“.
The INGV recalls that during the bradyseismic crisis of 1982-84 the ground lifting reached 9 cm per month, and even exceeded 1,300 seismic events per month.“Currently, however, approximately 450 events with Md=0.0 have been recorded in the last month”.

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The geochemical parameters measured with the continuous stations (Temperature and carbon dioxide flows) do not show significant variations compared to the trends of recent months, other than the well-known increase in temperature and pressure that characterizes the hydrothermal system.
Seismicity, it is underlined in the note, is not a predictable phenomenon, therefore "it cannot be excluded that other seismic events may occur, even of similar energy to what has already been recorded during the ongoing swarm“.
The INGV Vesuvius Observatory continues its ordinary and extraordinary monitoring activities to identify even the smallest variations in the monitoring parameters useful for better defining the current phenomenon underway.The INGV structures dedicated to monitoring the Campi Flegrei caldera area "are always operational 24 hours a day and on May 21st measurements and sampling will be carried out in some sites of the caldera".
The INGV, with its Naples Vesuvian Observatory Section, is “constantly in contact with the national and regional Civil Protection and with the municipalities involved, as well as with all the authorities responsible for the protection of the territory".