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Infrasound Buoys Remotely Monitor Deep Ocean Volcanic Activity for the First Time

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Discovery

Curated by Surfaced Editorial·Science·2 min read
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An international collaboration led by the University of Rhode Island's Graduate School of Oceanography has successfully deployed a network of specialized infrasound buoys to remotely monitor deep ocean volcanic eruptions. The system detected distinct infrasonic signatures from previously unobservable submarine volcanoes in the Pacific Ocean, recording dozens of events over a six-month period, some correlating with seismic activity. Researchers designed robust buoys capable of withstanding extreme ocean conditions and equipped them with sensitive hydrophones to pick up low-frequency sounds propagating thousands of kilometers through the water column. This pioneering approach provides critical, real-time data on underwater geological processes, offering a new window into the dynamics of Earth's most active, yet hidden, volcanic regions. The ability to 'hear' eruptions from afar offers a counterintuitive method for studying Earth's crust.

Why It’s Fascinating

Experts were surprised by the clarity and consistency of the infrasound signals, demonstrating that distant underwater eruptions create acoustic signatures detectable across vast ocean basins. This overturns the previous reliance solely on seismic data or infrequent visual surveys for deep-sea volcanic monitoring, confirming infrasound as a powerful complementary tool. Within 5-10 years, this network could become a crucial early warning system for tsunamis generated by submarine eruptions or landslides, protecting coastal communities. It's like having a stethoscope for the entire ocean, listening to the deep rumblings of our planet's hidden geology. Oceanographers, volcanologists, and disaster preparedness agencies benefit most. How might these new insights into deep-sea volcanism change our understanding of ocean chemistry and marine ecosystems?

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