Tungurahua volcano (Ecuador) activity update

Mon, 29 Jul 2013, 14:19
14:19 PM | BY: T
During the past days, a further increase in activity of the volcano occurred, characterized by the generation of large explosions and a constant ash eruption column, and several small to big explosions that generated strong vibrations and rattled windows in villages near the volcano. An eruption at 07:23 (local time) on 28 July generated a small pyroclastic flow that affected the upper north and north east flank of the volcano.
Constant ash emissions produce a an ash column of up to 1.5 km height, drifting westwards. Ash fell in the town of Mocha.
Seismic activity consists of long period (LP) earthquakes associated with internal fluid movements.
According to IGPEN, the most likely scenario is that a new magma body is currently rising and might produce more strong explosions, causing ash fall and possibly pyroclastic flows on the flanks.
It is observed that SO2 output is decreasing, which suggests that a plug is forming in the conduit, and could lead to a strong vent-clearing explosion within the near future.

Previous news

Thu, 25 Jul 2013, 14:38
This morning's seismic signal from Tungurahua (RETU station, IGPEN)
An increase in activity has occurred since yesterday. For 24 July, IGPEN reports an eruption column of steam and ash reaching 5 km above the crater drifting into westerly directions. During the past night, a further rise in activity has likely occurred, as the increasing tremor signal suggests. Read all
Wed, 24 Jul 2013, 06:00
IG reported that activity at Tungurahua remained high during 24-30 July. Although cloud cover often prevented visual observations of the crater, plumes were observed almost daily. Roaring was also regularly reported. ... Read all
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