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Alert Level raised for Tolbachik volcano, Kamchatka

Tuesday Nov 27, 2012 12:07 PM | BY: VOLCANOBULLETIN

In a special notice by the KVERT(Kamchatka Volcanic Eruption Response Team)on 27 November, the Alert Level was raised from GREEN to YELLOW. The volcano's last eruption was in 1975 with a large basaltic fissure eruption from its SSW flank dubbed 'the great Tolbachik fissure eruption'

Starting on the 7 November, several episodes of volcanic tremor were detected beneath Tolbachik's summit caldera.

The number of shallow volcanic earthquakes increased to 250 on November 26. According to data from seismic stations, a strong seismic event occurred at 5:52 (UTC) on November 27. The KVERT noted that magma intrusion may be already occurring. The Alert Level was raised from GREEN to YELLOW.

The KVERT have yet to detect any other signs of activity, such as strong gas and steam activity and thermal anomalies.
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Links / Sources:
Previous news
Monday, Nov 26, 2012
The GeoNet stated on Facebook that 1% of ejected material from the November 21 eruption of Tongariro was fresh magma. ... [more]
Thursday, Nov 22, 2012
Strombolian activity has resumed at the New SE crater of Etna volcano in Italy. Tremor began rising on 20 November. On the night of 21 November, incandescence was seen in Etna's New Southeast crater. Incandescence was last observed from the crater in April 2012.On 22 Nov, a swarm of earthquakes has started in the NW sector of the volcano at depths mostly around 20 km. ... [more]
Tuesday, Nov 20, 2012
Ash explosions occur almost each day at Paluweh volcano (Rokatenda) off Flores, Indonesia. The activity seems to be increasing. The largest explosions have produced plumes rising up to 3 km altitude. ... [more]

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