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Volcanic activity world-wide 23 August 2012: Tungurahua, Etna, Popocatépetl, Fuego, Santiaguito, Nevado del Ruiz, Batu Tara, Sakurajima

Thursday Aug 23, 2012 16:42 PM | BY: T

Tungurahua volcano's activity has decreased. There are still occasional weak explosions, but bad weather prevents direct observation.

Popocatépetl continues its overall decreasing trend. In the latest update, about one weak (mostly steam) explosion per hour and few weak tremor pulses were noted.

Activity at Fuego volcano has not changed since yesterday. Strombolian activity and two active lava flows about 400 m long are recorded.

Activity of Santiaguito is difficult to observe as most of the time, the volcano is covered in clouds. The volcano observatory reports a strong steam plume rising 150 m, few weak avalanches from the southeastern flow, and a moderate explosion at 06:33 earlier today, that produced an ash cloud rising 700 m. It seems that activity has been decreasing somewhat.

Strong degassing and some ash venting accompanied by varying tremor levels continue at Nevado del Ruiz volcano in Colombia. The volcano remains at orange alert, an eruption could happen any time.

Etna volcano: For almost 2 weeks now, there has been not much activity at Bocca Nuova. Perhaps, this phase is over and we were lucky to have witnessed some of the last explosions? A good summary of the recent activity was posted in today\'s Smithsonian / USGS Weekly Volcanic Activity Report that describes the 6 episodes of strong explosive activity in the crater.

Batu Tara (Sunda Islands, Indonesia) has daily eruptions with ash clouds rising to about 7,000 ft, VAAC Darwin reports.

Sakurajima volcano had 2 more weak and one moderate explosions with ash reaching near 3 km altitude during the past 24 hours.
Previous news
Wednesday, Aug 22, 2012
Tungurahua volcano has been very active the past days, with continous ash emissions and occasional large explosions producing ash plumes up to 32,000 ft (ca. 10 km) altitude. IG scientists on an overflight observed strombolian activity from the inner summit crater which has filled with fresh lava. ... [more]
Tuesday, Aug 21, 2012
Tungurahua volcano emits a near constant steam and ash plume rising on average 1.5 km with peaks of up to 4 km above the crater. This activity produces significant ash fall in areas west of the volcano. Intermittent explosions throw bombs to 500 m height and up to 1.5 km radial distance. A strong SO2 plume can be seen on satellite imagery. ... [more]
Monday, Aug 20, 2012
The eruption of Tungurahua volcano continues with constant ash emission rising 1.5 km above the crater, intermittent moderate explosions, and produces pyroclastic flows of 1.5 km length. ... [more]
Friday, Aug 17, 2012
The new earthquake swarm that started on 15 August at El Hierro islan continues in the same area at aroud 10 km depth beneath the western El Golfo coast, but seems to be decreasing. Yesterday, 58 quakes occurred, today so far 18 although this number is likely to rise. Tremor is low to none. ... [more]

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