Tungurahua Volcano, Ecuador: possible lava flow
Sunday Aug 19, 2012 11:59 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)
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:
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]
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]