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Mount Cleveland Lava Dome Grows 25%

February 15, 2012 2 comments

accuweather.com

The lava dome covering Mt. Cleveland volcano in Alaska has grown by 25 percent since last week. The dome was reported to be 40 meters across on Monday Feb. 6., and has now increased to 50 meters in size, according to the Alaska Volcano Observatory (AVO).

“We got indications from satellite data that the dome had grown slightly,” Alaska Volcano Observatory Research Geologist Matt Haney said. “The recent expansion shows that growth has not ceased.”

The current lava dome is much smaller than the dome was before the last eruption of Mt. Cleveland.

“The previous lava dome that was removed by explosive activity on Dec. 25 and Dec. 29 covered most of the 200-meter-diameter summit crater. So, indeed it was larger than the current dome,” said Haney.

Given that the current lava dome is still significantly smaller than the dome in December, does that mean the explosion would be smaller if it happened from this smaller lava dome?

“No, a larger dome doesn’t necessarily mean a larger yield from the explosion,” said Haney. “We’re still expecting the same type of altitude for the ash cloud. It should interrupt Trans-Pacific Read more…