By GLR ANdReA - Posted on 03 September 2012
Large explosive eruption with ash up to 12 km, Bezymianny volcano
- The Watchers
stratovolcano Bezymianny had large explosive eruption on September 1,
2012. According to seismic data by KB GS RAS, explosive eruption began
at 19:16 UTC. According to visual data, ash plumes rose up to 32,800 –
39,400 ft (10-12 km). Explosive phase of eruption continued till 19:45
UTC, and later there was a volcanic tremor was registered about 2 hours.
There is no ash near Bezymianny volcano at now, but ash plumes are
extending to the east-north-east of the volcano about 550-600 km of the
21:32 UTC ash plumes were extending to the east-north-east of the
volcano about 370 mi (600 km) of the volcano. As of September 2nd the
Aviation color code is back Orange from Red and the eruption of the
volcano is gradually finishing. Ash plumes are extending more 370 mi
(600 km) to the east-north-east of the volcano.
Ongoing activity could affect international and low-flying aircraft.
periods of intensified activity have occurred during the past 3000
years. The latest period, which was preceded by a 1000-year quiescence,
began with the dramatic 1955-56 eruption. This eruption, similar to that
of Mount St. Helens in 1980, produced a large horseshoe-shaped crater
that was formed by collapse of the summit and an associated lateral
blast. Subsequent episodic but ongoing lava-dome growth, accompanied by
intermittent explosive activity and pyroclastic flows, has largely
filled the 1956 crater.
volcano is one the most active volcano of the world. 43 Vulcanian-type
strong explosive eruptions of Bezymianny occurred in 1965-2012, while 20
of them producing ash up to 10-15 km.
Take a look at images of Bezymianny volcano on September 1, 2012 here. Images from previous eruptions are also there.