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Listen to the pulse of an erupting volcano: Chile's Villarrica
Geologist Jeff Johnson working in the inner crater of Villarrica, an active volcano in Chile.
Credit: Richard Sanderson
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"Circulation" of a volcano: infrasounds of erupting Villarrica volcano in Chile.
Credit: Jeff Johnson, Boise State University
Scientists studying Villarrica witnessed spectacular fire fountains.
Credit: Wikimedia Commons/Jonathan Lewis
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Photo of Villarrica taken from the east, shortly before the March 3, 2015, eruption.
Credit: Jeffrey Johnson
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Mudflow from the eruption; infrasound analysis reveals the mudflow's speed, duration and location.
Credit: Jeffrey Johnson
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An Araucaria tree near Villarrica, dotted with "lava rock," or scoria, from the eruption.
Credit: Jeffrey Johnson
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