science

Research in Chile suggests climate crisis makes eruptions more likely and explosive, and warns of Antarctica risk

The melting of glaciers and ice caps by the climate crisis could unleash a barrage of explosive volcanic eruptions, a study suggests.

The loss of ice releases the pressure on underground magma chambers and makes eruptions more likely. This process has been seen in Iceland, an unusual island that sits on a mid-ocean tectonic plate boundary. But the research in Chile is one of the first studies to show a surge in volcanism on a continent in the past, after the last ice age ended.

Global heating caused by the burning of fossil fuels is now melting ice caps and glaciers across the world. The biggest risk of a resurgence of volcanic eruptions is in west Antarctica, the researchers said, where at least 100 volcanoes lie under the thick ice. This ice is very likely to be lost in the coming decades and centuries as the world warms.