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Eruption loading: New approaches to earthquake monitoring at Ontake volcano, Japan
A new study has investigated the use of a new monitoring technique for early warning of a volcanic eruption. The research team compared the earthquake signals during two eruptions of Ontake Volcano in Japan, one of which was a small eruption and the other of which was explosive. From this, they were able to identify that shear-wave splitting parameters showed differences depending on the size of the eruption. The study proposes that the monitoring of this signal would provide a useful early warning of dangerous volcanic eruptions.