Latest Mount St. Helens Stories
There's a whole lotta shakin' going on at Mount St. Helens these days as the restless peak does what it has done for thousands of years: build new lava domes that totter and fall and become the foundations for still more new ones.
The four, their lungs filled with ash, were found inside their car after Mount St. Helens erupted on May 18, 1980, with the force of a hydrogen bomb. Twenty-five years after the fatal eruption, victims' families want to stress that their loved ones did not die because of their own recklessness.
In the shadow of Mount Rainier in Washington, people go about their lives - going to shop, going to school, going to work. One day, though, the routine will be broken by a rumble that sounds like a thousand freight trains.
The Yellowstone caldera has been classified a high threat for volcanic eruption, according to a report from the U.S. Geological Survey. Yellowstone ranks 21st most dangerous of the 169 volcano centers in the United States.
Johnston Ridge Observatory reopened to the public Friday, seven months after it was closed because of new activity at Mount St. Helens.
While Mount St. Helens and Kilauea generate the most attention, many other volcanoes in the United States have little or no regular monitoring and need to be watched for potential eruptions, a new report warns.
Surging seismic activity at Mount St. Helens has changed the whale-back shape of the volcano's emerging new dome, leaving it more like the back of a stegosaurus - a dinosaur with bony plates of armor along its spine.
Scientists at the U.S. Geological Survey's volcano observatory here were getting ready to head home when the squiggly line on the computer that tracks seismic activity at Mount St. Helens suddenly turned a solid black.
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.
Washington state's top polluter isn't a pulp mill, a power plant or refinery. It's the newly awakened Mount St. Helens. Since the volcano began erupting in early October, it has been pumping out 50 to 250 tons a day of sulfur dioxide, the lung-stinging gas that causes acid rain and contributes to haze.
Socompa is a complex stratovolcano that can be found at the border of Chile and Argentina, reaching an elevation of 19,852 feet. This volcano is best known for its avalanche debris deposit, which have formed the Monturaqui Basin on its west side, the most noted example of this type of deposit in the world. It is a difficult volcano to visit, taking at least a day by vehicle traveling from the north or the west. Socompa is also known for the microbial ecosystems that occur near grasses at its...
- In medieval musical notation, a sign or neume denoting a shake or trill.