May 1, 2012 - Ash on snow from Shiveluch, Kamchatka Peninsula, eastern Russia

Ash on snow from Shiveluch, Kamchatka Peninsula, eastern Russia =

The restless Shiveluch, one of Kamchatka's largest and most active volcanoes, continued to release ash plumes throughout April, 2012. On April 26, ITAR-TASS reported that, following two earthquakes, the volcano sent an ash column over 10 km (6.2 mi) in the air, as witnessed from the Klyuchi settlement located 50 km (31 mi) from the foot of the volcano.

Throughout April, Shiveluch has experienced bursts of seismic and volcanic activity, which have been increasing in frequency. From April 16 to April 24, ash eruptions were a daily event, with large plumes ejected intermittently. ITAR-TASS called the April 26 event “the most powerful eruption this year”.

The volcanic activity has left its mark across the region, painting the surrounding snow in sooty gray ash fall. In this true-color image, captured by the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard NASA’s Terra satellite on April 28, the snow around Shiveluch can be seen to be heavily stained with gray ash, especially in the east. Streaks of heavy ash fall radiate around the mountain, heaviest in the east and northeast. The darkest streak appears to be an active ash plume blowing towards the northeast, dropping additional ash on the snow.

Image Facts
Satellite: Terra
Date Acquired: 4/28/2012
Resolutions: 500m ( B), 250m ( B)
Bands Used: 1,4,3
Image Credit: Jeff Schmaltz, MODIS Land Rapid Response Team, NASA GSFC