Tungurahua volcano news & eruption updates:
Tungurahua volcano (Ecuador): decreasing activity
Tuesday Feb 18, 2014 09:02 AM | BY: T
After the major eruptions on 1 Feb, the volcano continued to produce frequent (comparably) smaller explosions of strombolian to vulcanian type, sometime causing small pyroclastic flows. Ash falls have been mainly affecting areas in Penipe, south of the volcano. During the past days, activity has been decreasing overall.
IGP reports an earthquake swarm on 10 Feb, when a series of volcanic-tectonic quakes occurred under the northwestern flank of the volcano between Pondoa and Juive Grande. The earthquakes were at depths between 10 and 11 km below the crater and measured up to magnitude of 3.0 on the Richter scale. The largest were widely felt in villages around the volcano.
These seismic events could represent an increase in pressure in the volcano caused by a new batch of magma in its conduit, or, alternatively, it could suggest a relaxation process.
At the moment, the volcano has fewer explosions and less episodes of tremor compared to previous days. The internal (seismic) activity thus is well reflected at the surface. Deformation of the cone shows no acute changes in patterns, while measured SO2 emissions have been declining.
Links / Sources:
Links / Sources:
Monday, Feb 10, 2014
Activity of the volcano remains intense, but the style of the eruption has changed towards near continuous ash emissions as opposed to discrete, but potentially much more violent explosions. The ash plume still rises up to 4 km above Tungurahua's summit at times. ... [more]
Thursday, Feb 06, 2014
The volcano continues to be very active with frequent explosions that eject incandescent lava to several hundred meters height and ash plumes rising up to 3-4 km above the summit. ... [more]
Tuesday, Feb 04, 2014
Activity remains elevated. The volcano emits a constant ash and steam column rising up to 4-5 km, and has strong individual explosions with loud detonations like cannon-shots. ... [more]
Monday, Feb 03, 2014
Activity at the volcano continues at similar levels as yesterday with intermittent small to moderately large explosions, producing ash plumes of up to 4 km height. ... [more]
Sunday, Feb 02, 2014
A strong phase of activity (a paroxysm) occurred yesterday afternoon, with a series of powerful vulcanian explosions, that produced an ash plume surpassing 40,000 ft (13 km) altitude, heavy tephra fall and pyroclastic flows to up to approx 8 km length. ... [more]