9/30/2026
The Chart Room

Tonga’s 2022 ‘Ultra’ Eruption Rewrote the Rules for Tsunamis. Now We Know Why

Filed by Dana Graviton
Tonga’s 2022 ‘Ultra’ Eruption Rewrote the Rules for Tsunamis. Now We Know Why
Rare sonar mapping—conducted before and after an undersea volcano erupted off the coast of Tonga in 2022—has uncovered the unique reasons for its deadly tsunami.
D
Dana Graviton
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Tonga’s 2022 ‘Ultra’ Eruption Rewrote the Rules for Tsunamis. Now We Know Why — The Chart Room