Volcanoes "Whisper" Warnings of Eruptions Ahead of Time
A new study led by Boise State associate professor of geophysics Jeffrey Johnson has proven the potential for using volcanic infrasound – inaudible sounds produced by active volcanoes – to help forecast future catastrophic eruptions.
The study focused on Chile’s Volcán Villarrica, an open-vent volcanic system with a funnel-like geometry of its crater, which makes it particularly efficient for radiating infrasound. Villarrica erupted in the mid-1980s and has since hosted a lava lake in the summit crater.
Credit: Jeffrey Johnson
“This study demonstrates the utility of remote infrasound monitoring for future eruptions of Villarrica and other analogous open-vent volcanoes,” Johnson explained.
Co-authors of the article include Jose Palma from the University of Concepción in Chile; Boise State graduate student Jacob Anderson; Eric Dunham, an associate professor in the Department of Geophysics of the Stanford School of Earth, Energy & Environmental Sciences; and Leighton Watson, a graduate student in Dunham’s lab.
Contacts and sources:
Boise State University
Source: http://www.ineffableisland.com/2018/02/volcanoes-whisper-warnings-of-eruptions.html
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