Tungurahua volcano news & eruption updates:
Tungurahua volcano (Ecuador) activity update: ash venting, intermittent explosions
Friday Jul 19, 2013 01:42 AM | DOOR: T
Last night's seismic signal from Tungurahua (RETU station, IGPEN)
After the strong vulcanian explosion on 14 July, the volcano calmed down first, but resumed activity on 16 July which has been characterized by ash venting and small to moderate explosions and is continuing.
Map of pyrocalstic flow deposits from the 14 July explosion (IGPEN)
This activity was accompanied by the appearance of tremor and long-period earthquakes indicative of fluid movements. In addition, inflation is measured at the NW flank, suggesting that more magma is rising, and could lead to new powerful explosions similar to the one from last Sunday.
IGPEN details that the eruption column from the 14 July eruption rose 8.3 km above the crater and pyroclastic flows traveled as far as 6-7 km into various valleys radiating from the volcano, mainly Juive Grande and Achupashal, which are among the areas most at risk.
Monday, Jul 15, 2013
A large explosive eruption occurred Sunday (14 July) morning, producing a large ash plume that could be seen from Quito (135 km away) and pyroclastic flows. According to Washington VAAC, the ash reached altitudes of 45,000 ft (13 km). The eruption followed a fast build-up of seismic activity, and likely corresponds to a vulcanian-type explosion, where pressure builds up to eject a solid plug that has tapped the vent. Elevated seismic activity had been noted in phases at the volcano during the previous weeks and while not completely unexpected as a potential scenario, the strength of the explosion was a surprise. ... [meer...]
Sunday, Jun 30, 2013
IGPEN reports an increase of seismic activity over the past days which might herald a new phase of activity in the near future. ... [meer...]
Saturday, May 25, 2013
Activity continues to be very low (steaming / degassing). [meer...]
Thursday, May 16, 2013
The volcano has calmed down a bit compared to the previous week, which is also apparent on recent seismograms. No recent explosions or ash falls were reported. [meer...]
Tuesday, May 14, 2013
IGPEN reports ongoing strombolian activity with lava ejected to 200 m above the crater, continuing emissions of steam and ash and occasional strong explosions with roaring sounds that produce ash columns up to 3 km high. Ashfall was reported overnight 12-13 May in the sector of Manzano. [meer...]