Reventador volcano (Ecuador): new eruption
Wednesday Mar 26, 2014 16:36 PM | BY: T
The volcano has entered a new eruptive phase since yesterday, Ecuador's Institute of Geophysics (IGP) reported. Starting from 15:00 local time yesterday, increasing tremor was registered and steady ash emissions were observed. At night, incandescent blocks could be seen and heard rolling down from the crater where probably a new lava dome has started to appear.
Continuous ash emission and incandescent avalanches on Reventador's eastern flank (image: G. Taipe / IGP)
Small pyroclastic flows descended on the eastern, southeastern and southern flanks of the volcano, probably as a result of re-mobilization of fresh lava and tephra deposits. These so-called secondary pyroclastic flows reached lengths of 500 m below the summit.
IGP assumes the most likely scenario for the evolution of the new eruptive episode is that activity continues at similar levels for a while. So far, lava avalanches and pyroclastic flows have been confined within the caldera, near the flanks of the main cone. So far, no reports of ash falls became available from communities in the nearby areas, suggesting that the eruption is still small. An important hazard remains in the form of lahars (mud flows), which can be generated by re-mobilization of loose material during heavy rainfall and would most likely threaten the bed and banks of the Quijo river.
Links / Sources:
Links / Sources:
Thursday, Feb 06, 2014
Intense degassing and occasional weak explosions with ash emissions probably continue, based on the more or less unchanged moderately intense seismic activity. Visual observations were not possible over the past days due to cloud cover. [more]
Thursday, Jan 30, 2014
Activity at the volcano continues at moderate levels according to IG, but for the first time since a while, new ash emissions and incandescent material were reported. ... [more]
Thursday, Nov 14, 2013
The activity consisting of sporadic small to moderate explosions continues but has decreased after 2 November. On that day, a small pyroclastic flow descended on the west flank of the active cone, reaching a length of 300-400 m. Explosions produced plumes of up to about 2 km height and light ash fall occurred in San Rafael village located 8 km east of the volcano. ... [more]
Sunday, Nov 03, 2013
Sporadic explosions of small to moderate size continue to occur at the summit vent. A pilot observed an ash plume at 22,000 ft (6.7 km) altitude last night. [more]
Thursday, Oct 17, 2013
IGPEN reports no significant change in the currently mild, intermittent explosive activity. During the latest 24 hour observation interval, 12 ash explosions were recorded and observed ash plumes rose to about 1 km above the crater. [more]