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Andrew Alden

A Better VEI

By July 8, 2013

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Over the weekend I finished work on this detailed explanation of the Volcanic Explosivity Index or VEI scale, the industry standard. It turns out that with all of our focus on the huge "supervolcano" eruptions, which rank at the top of the scale (VEI 8), we've ignored the trouble the scale causes for more practical volcanologists who are measuring the little teeny explosions that can nevertheless kill people, bombard their trucks and cause other problems. A team of those microvolcanologists is proposing a revamp.


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