June 19, 2009 - Ash plume from Sarychev Peak, Matua Island, Kurile Islands

Ash plume from Sarychev Peak, Matua Island, Kurile Islands

On June 12, 2009, Sarychev Peak in Russia’s Kuril Islands sent ash plumes in two directions. According to a bulletin from the U.S. Air Force Weather Agency, the ash spread roughly 105 kilometers (65 miles) toward the west-northwest, and another 250 kilometers (155 miles) toward the east-southeast.

The MODIS on the Aqua satellite captured this on June 12, 2009. A thick blanket of clouds covers the region, but not the gray-brown ash plumes. The larger plume toward the east-southeast casts shadows onto the cloud cover below. The darkest shades of brown appear near the volcano’s summit, an indication of high ash concentrations. The relatively light color of the volcanic plume east of the volcano suggests high water vapor content.

At the northwestern end of Ostrov Matua (Matua Island), Sarychev Peak ranks among the most active volcanoes in the Kuril (or Kurile) Islands. The volcano is a stratovolcano composed of alternating layers of solidified ash, hardened lava, and rocks thrown out by earlier eruptions. Eruptions have been recorded at Sarychev Peak since the eighteenth century, and have ranged in intensity from relatively calm lava flows to explosive eruptions.

Image Facts
Satellite: Aqua
Date Acquired: 06/12/2009
Resolutions: 1km ( B), 500m ( B), 250m ( B)
Bands Used: 1,4,3
Image Credit: Jeff Schmaltz, MODIS Land Rapid Response Team, NASA GSFC