# Small undersea volcanoes may unleash outsized tsunamis

https://mins.news/en/item/70534

- Ars Technica, 2026-09-23 11:15 UTC
- Science
- Original: https://arstechnica.com/science/2026/09/small-undersea-volcanoes-may-unleash-outsized-tsunamis/

> Researchers studying Tonga’s 2022 Hunga eruption focused on a rapid caldera collapse that may have amplified its powerful tsunami. Before-and-after seafloor comparisons indicate that a caldera roughly four kilometers wide sank by about one kilometer during the eruption.