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Satellite image of Tungurahua volcano by (c) Google Earth View
Satellite image of Tungurahua volcano by (c) Google Earth View
Tungurahua volcano
Stratovolcano 5023 m (16,479 ft)
Ecuador, -1.47°S / -78.44°W
Tungurahua volcano eruptions:
1534, 1557, 1640(?), 1641, 1644(?), 1646(?), 1757(?), 1773, 1776, 1777(?), 1781(?), 1857, 1885(?), 1886-88, 1900(?), 1916-25, 1944, 2000- (ongoing)
Typical eruption style:
Explosive.
Tungurahua webcams / live data
Last earthquakes nearby
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Tungurahua volcano (Ecuador), eruption update: decreasing activity

Saturday Aug 25, 2012 12:05 PM | BY: T

Current seismic signal from RETU station (IG)
Current seismic signal from RETU station (IG)
Spectrogram of current seismic signal showing the decreasing tremor (RETU station, IG)
Spectrogram of current seismic signal showing the decreasing tremor (RETU station, IG)
Activity has further calmed down over the past day. Only small explosions occurred and the maximum height of the steam and ash plume above the volcano has decreased to 2 km.
The seismic signal also shows a significant decrease of volcanic tremor.
Previous news
Spectrogram of current seismic signal showing tremor (RETU station, IG)
Friday, Aug 24, 2012
Activity remains at similar moderate levels as yesterday. Explosions every few hours are accompanied by strong cannon-shot noises and eject glowing bombs to up to 500 m height. Steam and ash plumes rise up to 4 km above the crater. Light ash fall was reported to the W and NW in the sectors of Chacauco, Cotaló and El ... [more]
Current seismic signal this morning from RETU station (IG)
Thursday, Aug 23, 2012
Tungurahua's activity has been decreasing since yesterday, which is also visible on the seismograms. Weak explosions could be heard occasionally, but visual observations were impossible due to cloud cover. [more]
Wednesday, Aug 22, 2012
IG reported that on 15 August three small explosions from Tungurahua were detected along with continuous tremor. An ash plume rose 1 km above the crater and drifted W, producing ashfall in El Manzano (8 km SW) and Pillate (7 km W). Activity increased the next day, characterized by increased tremor, roaring sounds, and instances of vibrating windows. An ash plume again rose 1 km, drifted W, and produced ashfall in El Manzano and Pillate. On 17 August two long periods of tremor associated with emissions were detected; 10 explosions were also recorded. Periodic clear views of the crater showed continuous steam-and-ash plumes rising 1.5-3 km above the crater and drifting WNW. Ash fell in Pillate and Bilbao (8 km W). Activity significantly increased at 2100, and strong explosions were detected. Cloud cover prevented visual observations. ... [more]
Current seismic signal from RETU station (IG)
Tremor and seismic activity have decreased somewhat, suggesting that the intensity of the eruption has diminished at bit for the time being. [more]
Photographs of the inner crater inside the outer crater, the presence of magma inside the inner crater and pyroclastic deposits in the crater. (S. Vallejo and MF. Naranjo, OVT-IGEPN)
Tungurahua's eruption continues. This morning, a tall ash plume was rising to 32,000 ft (ca. 10 km) altitude and drifting west. A slight decrease in tremor is visible on the latest seismograms. ... [more]

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