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Wednesday, Apr 03, 2013
An eruption from Ivan Grozny volcano was reported yesterday by the Voice of Russia (German edition). According to the short news article, nearby villages received ash fall, and 2 millimeters of ash fell in Kurilsk town. Clouds prevented direct observations, and there was no sulfur odor detected. ... [more]
Saturday, Mar 30, 2013
Tokyo VAAC reported a possible eruption occurred yesterday around 11:00 GMT. A volcanic ash plume was observed at 7,000 ft (2.1 km) altitude and drifting eastwards. [more]
 

Grozny volcano

complex volcano 1211 m / 3,973 ft
Iturup Island, Kuril Islands, 45.03°N / 147.92°E
Current status: normal or dormant (1 out of 5) | Reports
Grozny volcano books
Last update: 2 Oct 2018
Typical eruption style: explosive (phreatic), lava dome building
Grozny volcano eruptions: 2013, 2012 (?), 1989, 1973, 1973, 1970, 1968 No recent earthquakes
TimeMag. / DepthDistanceLocation
Grozny volcano (Etorofu Yake-yama in Japanese) in central Iturup Island, Kuriles is one of the most frequently active volcanoes of the volcanic island chain.
It is a complex of 2 volcanoes: Ivan Grozny volcano and Tebenkov (also known as Odamoi-san) volcano.
Ivan Grozny volcano has a 3-3.5 km diameter caldera open to the south and includes the andesitic Grozny lava dome, whose name is also used for the whole complex. All known historic eruptions took place from Ivan Grozny volcano.

Background:

To the NE, there are several other lava domes which are less than 10,000 years old. Their formation modified the shore of a former lake at the northern side of the caldera to extremely sinuous shape.
The forested andesitic Tebenkov volcano is located immediately NE of the Grozny dome complex. Machekh is a crater immediately south of Tebenkov and has strong fumarolic activity.
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Source: GVP Grozny volcano information

2009 earthquake
A magnitude 5.1 earthquake occurred 12 km SE of Grozny volcano on 26 July 2009.

1989 eruption
Small phreatic eruptions occurred from the Grozny lava dome between 3 May and August 1989. New fumaroles, fissures and small explosion craters as well as lahars were formed in the eruption. ...more

1973 eruption
A single weak (phreatic) explosion happened at Grozny volcano in January 1973.

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