Tungurahua volcano (Ecuador), activity update: thermal anomaly in crater
Tuesday Apr 17, 2012 02:19 AM | BY: T
During an overflight on 13 April, geologists from IG observed weak but continuous steaming from Tungurahua volcano.
Upper western flank of Tungurahua and thermal image from the NE side, with the hot spots corresponding to still hot ejected blocks (photo: P. Ramón OVT/IG)
The crater geometry, nearly circular and 214 m in diameter, had not changed significantly since October 2011. Fumaroles were active at the E and W rim.
Thermal measurements indicated a maximum temperature of 171°C in the crater, 20°C more than in October 2011. A thermal anomaly was observed at the eastern outer rim of the crater. Near the rim of the inner crater, a 10-15 m large block with temperature of 147°C was observed, as well as other large blocks with temperatures of up to 173°C were found nearby. These blocks were probably ejected during the recent explosions.
Links / Sources:
Wednesday, Apr 11, 2012
A moderately large explosion occurred at Tungurahua volcano today at 08:56 (local time). The eruption generated an ash column of 4-5 km height above the crater. The ash at lower altitudes drifted north-east, east and south-east the lower column, and ash from the upper parts of the eruption column to the north-west. ... [more]
Tuesday, Apr 10, 2012
Tungurahua volcano's activity is again increasing. ... [more]
Thursday, Apr 05, 2012
IG reported that during 28 March-3 April visual observations of Tungurahua were mostly limited due to cloud cover. ... [more]
Monday, Mar 26, 2012
Tungurahua volcano's activity has been increasing, Ecuador's Instituto Geofísico reports. Throughout the morning of March 26, a constant column of steam and ash was rising from the summit crater, reaching up to 3 km height and drifting towards the northeast, where ash fall occurred. Ash fall was significant in the San Francisco and Black River areas, and mild in Baños, the Ventanas en Runtún, Juive, Pondoa, Puntzán and Cusúa sectors. ... [more]
Tuesday, Mar 20, 2012
Another series of explosions has occurred early today at Tungurahua volcano in Ecuador, the Instituto Geofísico (IG) reports. The eruption was reported to be very noisy and caused minor ash fall in nearby villages, but no damage. ... [more]