Satellite images show eruption on Alaska volcano

Aug 10, 2011 By MARK THIESSEN , Associated Press
Satellite images show eruption on Alaska volcano (AP)
This Monday, Aug. 8, 2011 aerial photo provided by the National Oceanic and Atmospheric Administration shows Cleveland Volcano, left, located in the Aleutian Islands 939 miles southwest of Anchorage, Alaska. The Cleveland Volcano has begun erupting, but poses little danger to people or aircraft, officials said Tuesday, Aug. 9, 2011. (AP Photo/NOAA, Kym Yano) MANDATORY CREDIT

(AP) -- A volcano on a remote Alaska island has begun erupting, but poses little danger to people or aircraft, officials said Tuesday.

The eruption at Cleveland is a slow effusion of magma that is forming a , and not an that generates large , said John Power, the scientist-in-charge at the .

"So far, it's just lava as far as we can tell from our satellite imagery and the people who have managed to see it from passing airplanes," he said.

The volcano is in a very remote area, on uninhabited Chuginadak Island, and that lowers the danger level.

"Certainly, if there were people who were going to be in the area, they would need to be concerned but there aren't many of those folks there right now," he said.

Currently the lava dome is confined within the summit crater. Power said the biggest danger would be if the lava dome began to grow large enough to spill out, then it could begin to generate ash-producing explosions.

"If it were to explode and push a bunch of ash up into the flight levels, then it would be a much more dangerous situation," he said.

Based upon past observations at several volcanoes, dome growth like this can go on for weeks to months.

"It's something we're going to be watching very closely, or as close as we can given our operational constraints there," he said.

There is no real-time at the volcano, located in the Aleutian Islands 939 miles southwest of Anchorage. Officials are not able to track local related to volcanic unrest. For pictures, they also have to rely on satellite imagery or what people in airplanes snap as they pass the volcano and send to the observatory.

Given the current level of activity and hazards, he said they don't plan to fly to the volcano, especially considering the expense.

But weather has cleared in the last few days to allow better .

"We've had a few good days where the top of the volcano has been sticking out of the clouds, so things are looking nice for us in terms of direct observations," Power said.

Short-lived explosions with ash clouds or plumes exceeding 20,000 feet above sea level are frequent on Cleveland. It last showed signs of unrest last summer, with a small ash emission and lava flows on its upper flanks.

The observatory says the last significant eruption of the 5,676-foot volcano began in February 2001 and eventually produced a lava flow that reached the ocean.

Explore further: Quakes destroy or damage 83 houses in Philippines

5 /5 (1 vote)
add to favorites email to friend print save as pdf

Related Stories

Alaska volcano eruptions ground flights

Jan 31, 2006

Alaska Airlines has canceled all flights to and from Anchorage because of activity at the Augustine volcano, about 180 miles southwest of Anchorage.

Scientists lower Alaska volcano threat level

Jul 01, 2009

(AP) -- Alaskans can put away their dust masks and spare air filters, for now, because Mount Redoubt seems to have cooled off since its last major eruption nearly three months ago.

Recommended for you

Kiribati leader visits Arctic on climate mission

Sep 20, 2014

Fearing that his Pacific island nation could be swallowed by a rising ocean, the president of Kiribati says a visit to the melting Arctic has helped him appreciate the scale of the threat.

NASA catches a weaker Edouard, headed toward Azores

Sep 19, 2014

NASA's Aqua satellite passed over the Atlantic Ocean and captured a picture of Tropical Storm Edouard as it continues to weaken. The National Hurricane Center expects Edouard to affect the western Azores ...

User comments : 0