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Latest Eruption of Mount St. Helens Stories

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2011-06-03 10:45:16

A 3-D model of a volcanic explosion, based on the 1980 eruption of Mount St. Helens in Washington state, may enhance our understanding of how some volcanic explosions occur and help identify of blast zones for potentially dangerous locations, according to an international team of volcanologists. "We took on the modeling of enormously complicated pyroclastic density currents, notably the classic, notorious May 1980 lateral blast that destroyed 500 square kilometers of forested terrain at Mount...

2009-10-01 11:55:58

Worldwide, thousands of workers die every year from mining accidents, and instantaneous coal outbursts in underground mines are among the major killers. But although scientists have been investigating coal outbursts for more than 150 years, the precise mechanism is still unknown. New research by scientists at the University of Michigan and Peking University in Beijing, China, suggests that the outbursts occur through a process very similar to what happens during explosive volcanic eruptions....

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2008-02-19 19:00:00

Volcanoes are notoriously hard to study. All the action takes place deep inside, at enormous temperatures. So geophysicists make models, using what they know to develop theories about what they don't know. Research led by Gregory P. Waite, an assistant professor of geophysics at Michigan Technological University, has produced a new seismic model for figuring out what's going on inside Mount St. Helens, North America's most active volcano. Waite hopes his research into the causes of the...

2007-11-08 18:31:40

WASHINGTON (AP) - Yellowstone National Park, once the site of a giant volcano, has begun swelling up, possibly because molten rock is accumulating beneath the surface, scientists report. But, "there is no evidence of an imminent volcanic eruption," said Robert B. Smith, a professor of geophysics at the University of Utah. Many giant volcanic craters around the world go up and down over decades without erupting, he said. Smith and colleagues report in Friday's issue of the journal Science that...

2006-05-30 14:10:25

VANCOUVER, Wash. (AP) - Mount St. Helens shot a steam and ash plume at least 16,000 feet into the air Monday after a large rockfall from the lava dome in the volcano's crater, scientists said. Pilots reported the plume rose between 16,000 and 20,000 feet in the air, scientists at the Cascades Volcano Observatory said. The rockfall coincided with a magnitude 3.1 earthquake shortly after 9 a.m. Monday at the mountain, scientists said. Such events are expected during growth of the lava dome,...

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2006-05-12 19:30:54

SEATTLE -- The sheer rock fin emerging in Mount St. Helens' crater lost about a third of its northern face recently, but because lava keeps pushing to the surface, the height remained the same Thursday - around 330 feet. A burst of seismic activity at the mountain Sunday night likely corresponded to the collapse. "Certainly a big piece fell off - something like 65,000 cubic yards," said geologist Dan Dzurisin at the Cascades Volcano Observatory in Vancouver, Wash., about 50 miles from the...

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2005-01-26 07:28:30

SEATTLE (AP) -- Growth of the new lava dome inside the crater of Mount St. Helens has gradually slowed since the mountain reawakened in October, scientists said Tuesday. Molten rock has been oozing out from the surface of the volcano's crater since the fall, building a new lava dome that now has a total volume of 44 million cubic yards. That is big enough to contain 134 buildings the size of the basketball arena where the Portland Trailblazers play. Scientists provided an update on Mount...

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2004-11-28 11:19:08

MOUNT St. HELENS (AP) -- A 3.1-magnitude earthquake shook the crater at Mount St. Helens on Saturday, the strongest quake at the volcano since mid-October. U.S. Geological Survey scientists said they did not believe a major eruption was imminent - just a continuation of the minor ash and steam eruptions that have been occurring since the mountain reawakened this fall. Saturday's earthquake appeared to be a larger version of the small earthquakes scientists have registered about once a...


Word of the Day
reremouse
  • A bat.
The word 'reremouse' comes from Middle English reremous, from Old English hrēremūs, hrērmūs ("bat"), equivalent to rear (“to move, shake, stir”) +‎ mouse.
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