Far beneath the ocean near Japan, scientists have discovered that the magma system linked to the most powerful eruption of the Holocene is slowly rebuilding. By using seismic imaging, researchers mapped a large magma reservoir under the Kikai caldera and confirmed it is the same system that fueled the massive eruption 7,300 years ago. However, the magma now present is newly injected, not leftover, as shown by changes in the chemistry of recent volcanic material and the growth of a lava dome over thousands of years.
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