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New Earthquake Signal Enhances Japan Volcano Eruption Warnings

8/28/2025

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Story summary
  • A study on Japan's Ontake Volcano identifies a new signal in earthquake waves to enhance eruption warnings.
  • Significant changes in shear-wave splitting were observed before the 2014 eruption, improving public safety.
  • This method may assist in predicting eruption size and minimizing false alarms for emergency managers.
  • The technique is expected to be applied globally for volcano monitoring.