Tungurahua volcano news & eruption updates:
Tungurahua Volcano, Ecuador: possible lava flow
Sunday Aug 19, 2012 09:59 AM | BY: T
Thermal images taken of the lava flow and mobilized incandescent blocks tumbling down from a notch in the crater wall on the northwestern flank of the volcano Tungurahua. (S. Vallejo / IGEPN)
At 19h36 (local time) on 18 August, a possible lava flow from the summit crater and incandescent lava blocks continuously tumbling down were observed using thermal imagery.
Current seismic signal (RETU station) with saturated tremor visible on the spectrogram (IG)
The lava flow which some observers also reported seeing by naked eye is emerges from a breach in the sidewall of the crater on the upper NW flank and directed towards the Cusu gorge.
Apparently the lava flow stopped after nearly 4 hours of motion, but bad weather conditions make detailed observations difficult.
Preceding the effusion of the new flow, there had been a strong increase of activity since 16 August including seismic tremor, steam and ash emissions and loud explosions audible in nearby towns such as Ambato.
Links / Sources:
Links / Sources:
Friday, Aug 17, 2012
A constant strong tremor signal is visible and the volcano is producing a strong steam plume with intermittent but still small ash explosions. VAAC Washington warns about ash at 20,000 ft, although is not able to identify it on satellite imagery. [more]
Thursday, Aug 16, 2012
Tungurahua continues to produce loud explosions and moderately strong ash venting which cause ashfall on surrounding communities. Tremor is high and seems to be rising. ... [more]
Wednesday, Aug 15, 2012
The Geophysical Institute of Ecuador (IG) has posted a special report summarizing the recently increased activity of Tungurahua volcano: ... [more]
Tuesday, Aug 14, 2012
An important increase of Tungurahua's activity can be seen on online data. VAAC Washington reports an ash plume at 20,000 ft (6 km) altitude moving WNW, and a strong SO2 plume is visible on satellite imagery. ... [more]
Tungurahua volcano (Ecuador) activity update: gas, steam and ash venting, occasional moderate explosions
Monday, Aug 13, 2012
The volcano continues to emit a steam plume with small amounts of ash, and has occasional small to moderate explosions accompanied by gunshot sounds heard around the volcano. [more]