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Tolbachik Update. First photos of the eruption

jeudi nov. 29, 2012 10:31 | AUTEUR : VOLCANOBULLETIN

The Tolbachik fissure eruption at night, two areas of activity can clearly be seen. KVERT
The Tolbachik fissure eruption at night, two areas of activity can clearly be seen. KVERT
Photo showing the southern area of activity. Lava flows from the northern part of the activity can been seen on the upper right. KVERT
Photo showing the southern area of activity. Lava flows from the northern part of the activity can been seen on the upper right. KVERT
Photo showing the two eruptive fissures, located ton the S flank of Tolbachik. Eruptions have also been occurring from the summit.
Photo showing the two eruptive fissures, located ton the S flank of Tolbachik. Eruptions have also been occurring from the summit.
On 29 November, the Tokyo VAAC reported that ash plumes from Tolbachik reached heights of 3.5 km. The MODVOLC also detected thermal anomalies and a strong S02 output is seen. On 29 November, the KVERT reported that the fissure had opened up in two places (in the southern cone area); the first is located 4.5 km from Tolbachik and contains 4 or 5 eruptive vents, the second is located 6.5 km downstream from the volcano and has 2 or 3 eruptive vents. Ground observers reported that the eruption started as a series of small eruptions that progressed into two fissures. Explosions were heard in Kosyrevsk (40 km west), Maiskoye (56 km northwest) and even Klyuchi (70 km north).
Analysis of a MODIS satellite image taken at 01:00 (UTC) shows two lava flows. The flows are facing west. The northernmost flow may extend for 5 km, the southern flow may extend for 8 km.
The KVERT has raised the alert level from ORANGE to RED.

The first photos of the eruption have been published (see photos).
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Source:
Actualités précédentes
mercredi, nov. 28, 2012
The Tokyo VAAC reported that an eruption of Tolbachik, Kamchatka began at around 10:45 (GMT). An initial ash plume rose to a height of 10 KM; ash was seen in satellite images. ... [details]
lundi, nov. 26, 2012
The GeoNet stated on Facebook that 1% of ejected material from the November 21 eruption of Tongariro was fresh magma. ... [details]
jeudi, 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. ... [details]
mardi, 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. ... [details]

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