Articles tagged "mount st. helens"

mount st helens earthquake swarm 2018

Series of earthquakes under Mount St. Helens, Washington

A series of small to moderate earthquakes shook Mount St. Helens volcano in Washington over the past couple of days. The largest was M3.9 at a depth of 10.2 km (6.2 miles) on January 3, 2018, followed by M2.7, M2.0 and M1.9. The quakes are believed to be tectonic in...

January 05, 2018

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CVO: Small magnitude earthquake swarm at Mount St. Helens, US

On March 14, 2016, the seismic network at Mount St. Helens, Washington, US began detecting small magnitude volcano-tectonic earthquakes at a depth between 2 and 7 km (1.2 to 4 miles). Earthquake rates have been steadily increasing since March, reaching nearly 40...

May 06, 2016

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Mount St. Helens 2004-2008 eruption: A volcano reawakens

Mount St. Helens reawakened in late September 2004. Small magnitude earthquakes beneath the 1980-1986 lava dome increased in frequency and size, and a growing welt formed on the southeast margin of the previous lava dome and nearby portions of Crater Glacier.On October

October 01, 2014

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Time-series of dome and glacier growth at Mount St. Helens (2004-2012)

The video bellow shows time-lapse changes in the lava dome and Crater Glacier from 2004-2012. The images were created from 1:12,000 scale vertical aerial photographs combined with ground control points from campaign GPS and targets. Photogrammetry software was used...

February 02, 2013

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Mount St. Helens' Runaway Glacier: A timelapse video of Crater Glacier

From 2005 to 2010, the U.S. Geological Survey-Cascades Volcano Observatory operated a remote camera on the northwest flank of Mount St. Helens. Looking into the crater, the camera captured hourly photographs of volcanic dome growth during the 2004-2008 eruption. The

October 09, 2012

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Huge rockslides at Mount Rainer

Mountain climbers and bloggers have posted videos on YouTube this week of dangerous rock and ice slides on Mount Rainier.The blog Mount Rainier Climbing posted a warning to fellow mountaineers on Monday. They recommend climbers avoid the Nisqually Glacier all

June 29, 2011