日本水下火山Kikai的岩浆储存库正在重新充填新岩浆[1]。神户大学研究人员通过地震波勘测发现，这个7300年前产生全新世最大火山喷发的巨大岩浆储存库正在接收新注入的岩浆[1]。该研究由地球物理学家Nobukazu Seama领导，已发表在《通讯地球与环境》杂志上[1]。
新发现的岩浆储存库与7300年前喷发的地下系统位置和范围相同[1]。化学研究表明，现在的岩浆与古代喷发的岩浆成分不同，说明新岩浆是新注入的[1]。Nobukazu Seama表示："这意味着现在存在于岩浆圆顶下岩浆储存库中的岩浆很可能是新注入的岩浆"[1]。岩浆圆顶在Kikai火山口中心形成已有约3900年[1]。
这项研究有助于理解黄石和托巴等超级火山的喷发周期[1]。
Researchers at Kobe University have discovered that Kikai, an underwater supervolcano off Japan, is accumulating new magma in its storage reservoir through seismic wave surveys.[1] The massive magma chamber, which produced the largest known volcanic eruption of the Holocene epoch approximately 7,300 years ago, is now receiving fresh injections of molten rock.[1]
The findings, published in Communications Earth & Environment in 2026, reveal that the magma currently beneath Kikai's caldera differs chemically from that which erupted millennia ago, indicating new material has recently entered the system.[1] A lava dome has been forming at the center of Kikai's volcanic crater for roughly 3,900 years.[1] According to Nobukazu Seama, a geophysicist leading the research, "This means the magma now present in the magma storage reservoir beneath the lava dome is very likely newly injected magma."[1] The study provides insights into the recharge cycles of supervolcanoes such as Yellowstone and Toba.[1]