Undersea Volcano Collapse Study Reveals How Small Eruptions Trigger Large Tsunamis

New research into the Hunga volcano has shed light on how relatively small undersea eruptions can generate disproportionately large tsunamis. Post-eruption imaging of the Hunga caldera provided detailed data on how the volcanic structure collapsed. The findings suggest that the physical collapse of a caldera, rather than eruption force alone, plays a key role in wave generation. This challenges earlier assumptions about the scale of volcanic activity needed to produce dangerous tsunamis. The study has implications for how scientists assess tsunami risks from underwater volcanic events worldwide.