Tuesday, May 20, 2025

https://youtu.be/ujq9UA27A-k

Campi Flegrei, Italy's restless caldera, has been experiencing intense unrest for decades, characterized by significant ground uplift and frequent earthquakes. This activity includes periods like the unrest of 1982-1984 and the ongoing phase from 2011-2024. The recent evolution of bradyseism, the slow uplift or subsidence of the ground, has allowed for in-depth analysis of geophysical signals. For a long time, the driving force behind this unrest was commonly thought to be the movement of magma or its gases closer to the surface. This ongoing unrest, marked by increasing rumbling sounds that have become a signature feature for the population, has naturally caused concern among residents. Scientists have been diligently monitoring the area, collecting geophysical data through networks like those of the Vesuvius Observatory of the INGV, to better understand the complex processes occurring beneath the surface. Now, groundbreaking new research challenges this traditional view, suggesting that the elevation changes and earthquakes are primarily caused by rising pressure within a shallow geothermal reservoir, fueled by deeper magma but not necessarily involving magma moving upwards. This model is supported by the observation that earthquake activity is deepening over time, a pattern opposite to what would be expected if magma were the main driver. This fundamental shift in understanding, derived from rigorous mathematical analysis of monitoring data, opens up intriguing possibilities for potentially managing the unrest by controlling the hydrothermal system, perhaps through methods like managing surface runoff or withdrawing fluids. Scientists hope this new model will aid local Italian government officials in understanding the mechanisms and shifting towards a more proactive approach to unrest management. P. Geo. Ricardo A Valls, M. Sc. and Geo Gadfly Valls Geoconsultant ORCID ID- https://orcid.org/0000-0002-5421-0914 Scopus Author ID: 7003369619/35335510700 ResearcherID: S-6604-2018 If you like this content, please "buy me a coffee" https://www.buymeacoffee.com/goldendroplets

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