New Magma Injections Refill Japan’s Kikai Caldera After 7,300 Years
A Kobe University-led study using underwater seismic surveys mapped a large magma reservoir beneath Japan’s Kikai Caldera and found that fresh magma is being injected to refill the system after its 7,300-year-old eruption, supporting a general refill model for giant calderas like Yellowstone and Toba and potentially improving monitoring of future giant eruptions.