The eruption of some of the largest volcanoes on the planet could be predicted several decades before the event, according to researchers.

The largest of these volcanoes have been dubbed "supervolcanoes" and their eruptions can trigger devastation with global impacts. Such volcanoes can lie dormant for hundreds of thousands of years before blowing. But while researchers believe seismic data and other readings would give us a few month's notice of such an eruption, the new study suggests we might anticipate these events much earlier.