Undersea Volcanoes Pose Tsunami Risks, Study Finds
Undersea Volcanoes Pose Tsunami Risks, Study Finds
Tonga · Published Sep 24, 2026
• A study of the 2022 Hunga eruption in Tonga reveals that even small undersea volcanoes can generate massive tsunamis.
• Researchers found that the rapid collapse of the Hunga caldera, which sank by about a kilometre, amplified the tsunami's power.

Impact & Risks

The study highlights the potential for undersea volcanic eruptions to cause devastating tsunamis, even from relatively small calderas. Such events could threaten coastal communities, disrupt marine ecosystems, and damage infrastructure. The unpredictability of these eruptions and the lack of comprehensive understanding of their dynamics make them a significant hazard.

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