Volcanic explosivity index

Rarity: Uncommon

A topic a little better known than average, read and translated beyond its own country.

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Notion

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Science and technology

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What Wikipedia says

The volcanic explosivity index (VEI) is a scale used to measure the size of explosive volcanic eruptions. It was devised by Christopher G. Newhall of the United States Geological Survey and Stephen Self in 1982.

Excerpt from the Wikipedia article “Volcanic explosivity index”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: chris, Public domain, via Wikimedia Commons.