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: Volcano Photo Reveals Shock Wave



From: LiveScience
Published June 22, 2009 12:16 PM

Volcano Photo Reveals Shock Wave

An amazing new picture from space reveals a volcanic eruption in its earliest stage, with a huge plume of ash and steam billowing skyward and creating a shock wave in the atmosphere.

Sarychev Peak on Matua Island is one of the most active volcanoes in the Kuril Island chain, northeast of Japan.

The new photo was taken June 12 from the International Space Station. NASA says volcano researchers are excited about the picture "because it captures several phenomena that occur during the earliest stages of an explosive volcanic eruption."

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Sarychev Peak on Matua Island is one of the most active volcanoes in the Kuril Island chain, northeast of Japan. Astronauts took this photo of an eruption on June 12. The plume appears to be a combination of brown ash and white steam. The vigorously rising plume gives the steam a bubble-like appearance; the surrounding atmosphere has been shoved up by the shock wave of the eruption. Credit: NASA/ISS/Earth Observatory

Article continues:  http://www.livescience.com/environment/090622-matua-volcano.html

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