Tolbachik volcano: eruption updates & news
Tolbachik volcano (Kamchatka) eruption update: lava still flowing, unusually high effusion rates reported
Mittwoch Dez 12, 2012 11:05 | VON: T
Current webcam image of Tolbachik in eruption (12 Dec 2012)The eruption continues as webcam images show. An article from the Ria Novosti news agency said that according to Russian seismologists, Tolbachik has been erupting a record of 1,200 tonnes or about 400 cubic meters of basaltic lava per second.
If this number if correct, the current effusion rate would be significantly larger than the during the Great Tolbachik Fissure Eruption in 1975, when the effusion rate was about 40 m3/s on average.
The 1975 eruption, the largest in recorded history of Kamchatka, dramatically changed the local landscape and lava flows and ash fall caused extensive damage to the local ecosystems.
Since 27 December 27 when the eruption started, the volcano has been erupting lava flows from 2 fissures on its southern slope. The flow from the upper fissure has descended 6,000 m and the one from the lower fissure has reached 13.6 km length. At the moment, only the flow from the lower fissure is still active and spreading in the flat area at the base of the cone.
Tolbachik volcano (Kamchatka, Russia) activity update: continuing lava flow emission from lower fissure vent
Sonntag, Dez 09, 2012
The eruption continues at decreased intensity. Seismic activity has decreased during the past days, but the lower of the eruptive vents continues to feed a lava flow that has reached more than 10 km length in the relatively flat area at the eastern foot of the volcano and spreads there. [mehr]
Donnerstag, Nov 29, 2012
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). ... [mehr]
Mittwoch, Nov 28, 2012
The Tokyo VAAC reported that an eruption of Tolbachik began at around 10:45 (GMT). An initial ash plume rose to a height of 10 KM; ash was seen in satellite images. ... [mehr]
Dienstag, Nov 27, 2012
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' ... [mehr]