What's happened
Recent studies show that volcanoes previously thought extinct, including Methana, Mount Calavera, and Kikai, are accumulating magma beneath their surfaces. New imaging reveals large underground magma reservoirs, but these volcanoes are not currently threatening eruptions. These findings challenge assumptions about volcanic silence indicating extinction.
What's behind the headline?
The new evidence of large magma reservoirs beneath seemingly dormant volcanoes indicates that volcanic silence is not a reliable indicator of extinction. The discovery that magma can be steadily accumulating without surface activity suggests that these volcanoes could become active again, although the current risk remains low. This shifts the paradigm from viewing long quiet periods as signs of safety to understanding that underground magma systems can persist silently for hundreds of thousands of years. The findings also highlight the importance of advanced imaging techniques in volcano monitoring, which will likely improve early warning systems. However, the presence of water-rich magma and complex underground plumbing systems complicate eruption predictions, requiring ongoing research to assess future risks accurately.
How we got here
Scientists have used advanced techniques like zircon crystal analysis and ambient noise tomography to study underground magma systems. These methods have uncovered large magma reservoirs beneath regions like Tuscany and Mount Amiata, which have no surface signs of activity. The findings suggest that magma can be stored silently for long periods without erupting, challenging previous assumptions that long quiet periods mean a volcano is extinct.
Our analysis
The Independent reports that zircon crystal analysis has revealed magma production beneath Methana despite its long dormancy, challenging the idea that silence indicates extinction. The study published in Nature shows a large magma volume beneath Tuscany, comparable to Yellowstone, but with no surface signs of activity. Meanwhile, the NY Post details that Mount Calavera and Kikai caldera are refilling with magma, raising concerns about future eruptions. Experts emphasize that these reservoirs are not currently threatening eruptions, but the ongoing magma accumulation warrants close monitoring. The articles collectively demonstrate that underground magma systems are more dynamic and persistent than previously understood, emphasizing the need for continuous surveillance and research.