The wrong kind of volcano noise

January 23, 2012

by John Vidale

Mount Rainier continues popping and grinding (see current activity).  

The quakes match the times of snowfall, reinforcing our firm conclusion they are unrelated to magma movement (from Kate).

But we are compelled to watch volcanoes, as magmatic noises can be similar.  Santiaguito Volcano in Guatemala provides an example of the noises magma can make.

Check out the video comparing bursts of steam, the seismogram, and the acoustic signal: Youtube Link (spotted on the Volcano Facebook page).

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