Latest Eruption of Mount St. Helens Stories
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.
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.
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 donâ€™t know.
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.
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.
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.
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.
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.
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