Greek Volcano Thought Dormant Found to Be Accumulating Magma Steadily
In a groundbreaking discovery, scientists have revealed that the Methana volcano in Greece, long considered dormant for more than 100,000 years, is actually accumulating significant amounts of magma beneath its surface. This finding challenges traditional views on volcanic activity and has profound implications for risk assessment worldwide.
Uncovering Hidden Volcanic Activity
Researchers conducted an in-depth analysis using tiny zircon crystals, which serve as 'time capsules', to reconstruct the internal history of the Methana volcano over an extensive period of 700,000 years. The study demonstrated that despite its prolonged quiet phase, the volcano has been continuously producing magma underground. This process indicates that volcanoes can 'breathe' or maintain activity for millennia without erupting, a phenomenon previously underestimated in geological studies.
Key Findings and Implications
The magma supplying Methana's upper chamber was found to be unusually rich in water, a critical factor that triggers crystallisation and enhances the efficiency of magma production. These insights suggest that a long period of volcanic silence does not necessarily mean a volcano is extinct. Instead, it could signal the gradual build-up of a large and potentially more hazardous magma system. This discovery prompts a re-evaluation of risk for dormant volcanoes globally, urging scientists and policymakers to reconsider monitoring and safety protocols.
Why This Matters: The research highlights the need for ongoing vigilance and advanced monitoring techniques to better understand volcanic behaviour. By recognising that dormant volcanoes may still be active beneath the surface, communities near such sites can be better prepared for potential future eruptions, mitigating risks and enhancing public safety.
