Tungurahua volcano (Ecuador) - Smithsonian / USGS Weekly Volcanic Activity Report for 16 October-22 October 2013 (New Activity / Unrest)
IG reported that after a 3-month lull in activity at Tungurahua, a new eruption that began on 6 October was characterized by increased seismicity, Strombolian activity that ejected incandescent blocks, and ash plumes that produced ashfall in nearby areas. Seismicity peaked on 11 October and high-level ash plumes again produced ashfall in nearby towns. The number of explosions increased on 14 October and two small pyroclastic flows traveled a few hundred meters the next day.
Wed, 16 Oct 2013, 06:0006:00 AM | BY: VN
Source: Instituto Geofísico-Escuela Politécnica Nacional (IG)
From: Global Volcanism Program, 2013. Report on Tungurahua. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 16 October-22 October 2013. Smithsonian Institution and US Geological Survey.
Tue, 15 Oct 2013, 14:27
IGPEN reports no significant changes in the ongoing eruption, dominated by strombolian activity. Glowing blocks were seen rolling down for 1 km from the crater and there were sporadic cannon-shot explosions. A steam and ash plume rose to up to approx. 2 km height above the crater and caused ash fall in the areas of Mocha, Quero, Tisaleo and (a bit) in Mandur. ... Read all
Mon, 14 Oct 2013, 13:50
Continuous strombolian eruptions of fluctuating intensity are observed. This and the presence of a relatively large SO2 plume indicate that the volcano currently has an open conduit allowing fresh magma from deeper storage areas to rise quickly. ... Read all