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Science & Environment

Science and environmental reporting on news and community topics. Science coverage is occasionally provided by community members.

Courtesy Lynda Lybeck-Robinson

Unrest continues at Bogoslof volcano, but scientists say they’ve fine-tuned monitoring the activity from afar. The Eastern Aleutian volcano had a short lived, but powerful eruption Tuesday night.

David Schneider is a geophysicist with the U.S. Geological Survey.  He says this eruption isn’t much different from the others dating back to mid-December.

“It just indicates that the volcano continues to be in a heightened state of unrest," Schneider said. "It’s pretty unpredictable at this point.”

The five-minute explosion threw ash more than 30,000 ft into the air.

T. Keith, U.S. Geological Survey

Scientists believe Bogoslof volcano erupted for the first time this year, following a series of explosions that date back to mid-December. 

Monitors on nearby islands detected seismic activity Monday emanating from the Eastern Aleutian volcano.

But scientists believe the explosion was minor. The period of increased seismicity lasted about 10 minutes.

Courtesy Chris Waythomas, AVO/USGS

 

Bogoslof Island is an important breeding ground for marine mammals and seabirds making it the perfect place to monitor how life responds to volcanic destruction.

The island is tiny. But it’s hard to say how tiny because the shape and size of the island are changing almost constantly since the eruptions started December 16. While recent eruptions have added new land, Chris Waythomas of the U.S. Geological Survey says on the whole, the roughly mile-long island has shrunk.

Courtesy Lynda Lybeck-Robinson

Updated: 12/30 at 10:30 a.m.

Eruptions at a volcano in the Eastern Aleutian Islands are thought to have begun earlier than previously thought.

According to a retrospective analysis, the Alaska Volcano Observatory now thinks Bogoslof volcano first erupted on December 16.

So far, the observatory believes there have been eight eruptions this month and there could be more. Previous eruptions have lasted weeks. 

T. Keith, U.S. Geological Survey

Updated: 12/29 at 2 p.m.

Seismic unrest continues at Bogoslof volcano. Scientists are watching the eruption around the clock -- even though monitoring stations are far from the site.

 

Chris Waythomas, of the U.S. Geological Survey, is observing a particular indication of increased seismic activity: volcanic tremors.

 

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