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USGS says swarm of earthquakes detected below Mount St. Helens
Topic Started: May 7 2016, 07:49 AM (147 Views)
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The U.S. Geological Survey said Friday they have discovered a swarm of small earthquakes underneath Mount St. Helens since March, which could mean it’s recharging with magma.

Scientists said the Pacific Northwest Seismic Network detected more than 130 earthquakes, between 1.2 and 4 miles deep, in the region since March 13. Researchers said the majority of the quakes have registered as a magnitude 0.5 or less and some are too small to detect.

http://www.foxnews.com/science/2016/05/07/usgs-says-swarm-earthquakes-detected-below-mount-st-helens.html
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