Oceanography

2 articles

A massive seafloor volcano erupts during an ice age, releasing plumes of ash and lava into the deep ocean, impacting the marine environment.

Ice Age Sea Level Drops Boosted Seafloor Volcano Activity, Study Finds

Sediment records from the eastern equatorial Pacific reveal that ancient ice ages, by dropping sea levels, supercharged deep-sea volcanoes.

David Grossman·June 10, 2026

Massive Hunga Tonga-Hunga Ha'apai volcanic eruption with a towering ash cloud and shockwave over the Pacific Ocean.

Earth & Environment

Hunga Tonga Eruption: 55km Reach, Rewrites Climate, Impacts Marine Life

The Hunga Tonga-Hunga Ha’apai volcano erupted in January 2022, unleashing a force so immense its boom resonated across continents, reaching as far away as Canada.

David Grossman·May 20, 2026