Koryaksky volcano (Kamchatka), eruption news: new activity - ash emissions
Koryaksky volcano, one of Kamchatka's most majestic stratovolcanoes, near Petropavlovsk in the SE, began erupting late on 24 December.
Thu, 25 Dec 2008, 09:3909:39 AM |
According to KVERT, the volcano emitted a dense ash plume that rose to around 4 km altitude and extended more than 60km north-east of the volcano, as well as a weaker plume that extended 140km north-east.
Visual observations indicate that the new activity originated at a vent at around 3km a.s.l. on the north-western flank of the volcano, from which a dark column rose about 200-300m.
The only obvious precursory signs of the activity were an audible loud explosion sound and two earthquakes at 5km below the volcano on 23 December.
Koryaksky's last eruption was in 1956-57.
Links / Sources:
Links / Sources:
Wed, 24 Dec 2008, 06:00
Koryaksky volcano (Eastern Kamchatka, Russia) - Smithsonian / USGS Weekly Volcanic Activity Report for 24 December-30 December 2008 (New Activity / Unrest)
KVERT reported that during 23-24 December gas-and-steam plumes from Koryaksky containing a small amount of ash were detected on satellite images. On 24 December observers from the Nalychevo valley reported that a dark plume rose 200-300 m from a fumarolic vent (about 3 km a.s.l.) on the NW flank of Koryaksky and a boom was heard later that night. Ash plumes detected in satellite imagery on 25 December drifted about 200 km NE. ... Read all
Wed, 3 Dec 2003, 06:00
Koryaksky volcano (Eastern Kamchatka, Russia) - Smithsonian / USGS Weekly Volcanic Activity Report for 3 December-9 December 2003 (New Activity / Unrest)
According to a press report, a M 3.6 earthquake followed by ~2 hours of seismicity at ~6 km depth was detected at Koryaksky. ... Read all