The earthquake at the Flegrei Campi of 30 June, with an epicenter in the Bacoli area, was the strongest of the last 40 years together with that of March 13, 2025: he recorded the same magnitudeequal to 4.6but having verified to one greater depth (4-5 kilometers), caused a lower shaking of the soil And more contained effects, says the director of the Vesuvian Observatory, Mauro Antonio Di Vito.
THE first data collected show that in the affected area from the earthquake “There is no acceleration of the soilwhich always moves at the same speedand Geochimic parameters (like the Fumarola temperature and the concentration of carbon dioxide in the air) have not varied Compared to last weeks: this means that The ongoing process continues as in recent monthswithout particular news “.
At the origin of the phenomenon there is once again “the soil lifting to the Campi Flegrei, who continues to get up of 15 millimeters per month as in recent months generating these earthquakes At the edges of the raised area“, the expert specifies.” The data of the GNSS network indicate that the crustal deformation Continue with it same performance Since April 2025, with a speed that records maximum value to the land district “.
THE earthquakes that occur in the Gulf arealike that of June 30, have the peculiarity of being generally “deeper And therefore, even when the magnitude are high, they generate one shaking soil slightly lower. The June 30th the shaking recorded was relatively lowless than 10% of the acceleration of gravity, with the maximum values recorded by the accelerometric stations of the Terra, Bacoli and Monte Procida district. The other shock of magnitude 4.6 recorded on March 13, 2025 was more superficial and gave one major shaking“. Less shaking means less effects, even if there were small collapse landslides in Bacoli in Punta Pennata on 30 June, where an Ingv team is carrying out reliefs, while other experts from the institute will be at Solfatara tomorrow.
Widening to the More general situation of the Flegrei Campi in last yearscontinues Di Vito, there is “a increase from the frequency and of the magnitude of earthquakes and an increase in dejugation: just think that From 2005 to today We arrived at 5,000 tons of carbon dioxide emitted per daya very high value to which we have gradually arrived. It’s all connected: There is a deep system That He is heating And pressurizing and that it is the engine of this process“.
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