NASA satellite captures Russian volcano plume snapshot (NASA)

[eppur_se_muova]

On March 29, 2007, the Shiveluch Volcano on the Russian Federation’s Kamchatka Peninsula erupted. According to the Alaska Volcano Observatory the volcano underwent an explosive eruption between 01:50 and 2:30 UTC, sending an ash cloud skyward roughly 9,750 meters (32,000 feet), based on visual estimates. The MODIS flying onboard NASA’s Aqua satellite took this picture at 02:00 UTC on March 29. The top image shows the volcano and its surroundings. The bottom image shows a close-up view of the volcano at 250 meters per pixel.

Satellites often capture images of volcanic ash plumes, but usually as the plumes are blowing away. Plumes have been observed blowing away from Shiveluch before. This image, however, is different. It shows the gray-brown ash cloud suspended directly over the summit. At the time the Aqua satellite passed overhead, the local air was apparently still enough to let the ash cloud hover. In this image, the bulbous cloud casts its shadow northward over the icy landscape.

Volcanic ash eruptions inject particles into Earth’s atmosphere. Substantial eruptions of light-reflecting particles can reduce temperatures and even affect atmospheric circulation. Large eruptions impact climate patterns for years. A massive eruption of the Tambora Volcano in Indonesia in 1815, for instance, earned 1816 the nickname “the year without a summer.”

Shiveluch is a stratovolcano—a steep-sloped volcano composed of alternating layers of solidified ash, hardened lava, and volcanic rocks. One of Kamchatka’s largest volcanoes, it sports a summit reaching 3,283 meters (10,771 feet). Shiveluch is also one of the peninsula’s most active volcanoes, with an estimated 60 substantial eruptions in the past 10,000 years.

http://modis.gsfc.nasa.gov/gallery/individual.php?db_date=2007-04-02

[Der Blaue Engel]

1. Wow

Amazing picture! Thanks for posting that.

[bananas]

2. ground-level photo

http://www.avo.alaska.edu/

Dramatic umbrella cloud rising to an estimated 10,000 m (33,000 ft) above sea level over Sheveluch Volcano on the Kamchatka Peninsula during the explosive dome collapse event of March 29, 2007. According to observers, a pyroclastic flow accompanied the formation of this eruption column and cloud. Photograph taken in the nearby community of Klyuchi by Yuri Demyanchuk, Director of the Levinson-Lessing Kamchatkan Volcanological Station at Klyuchi (Institute of Volcanology and Seismology) and Engineer for the Kamchatkan Branch of Geophysical Surveys. Used with permission.

[Sherman A1]

Superb!!! Photos

Thanks!

[Sherman A1]

3. Superb!!! Photos

Thanks!

[eppur_se_muova]

4. Wow ... that's like porn for vulcanologists. nt

[Javaman]

5. Yuri, shut the door, I think it's snowing again...nt