Charlie Young
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A supervolcano is a volcano that has had an eruption with a volcanic explosivity index (VEI) of 8, the largest recorded value on the index. This means the volume of deposits for such an eruption is greater than 1,000 cubic kilometers (240 cubic miles).
Learn what supervolcanoes are, how they differ from other volcanoes and what their eruptions are like. Find out about the history, impact and risk of super eruptions on Earth.
Mar 19, 2019 · Learn what supervolcanoes are, how they form, and where they are located. Find out why supervolcanoes are not as dangerous as they are often portrayed in the media.
- 3 min
- Maya Wei-Haas
Learn what a supervolcano and a supereruption are, how they differ from other volcanic events, and which volcanoes have produced them in the past. Find out more about the USGS research, monitoring, and hazard assessment of these powerful natural phenomena.
Nov 1, 2023 · Both volcanoes are calderas — sprawling depressions created long ago by violent “super-eruptions” that essentially collapsed in on themselves — which are often more challenging to forecast...
Dec 7, 2023 · A supervolcano is a volcano that has produced at least one supereruption, meaning that at some point in its history, it has ejected more than 240 cubic miles (1,000 cubic kilometers) of...
Sep 3, 2021 · This supervolcano is believed to have erupted roughly 74,000 years ago, and some researchers believe the eruption released six billion tons of sulphur dioxide into the atmosphere, leading global temperatures to plummet by 15C (59F) for three years afterwards.
