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Volcanic activity world-wide 4 Aug 2012: Etna, Batu Tara, Nevado del Ruiz, Popocatépetl, Sakurajima, Tongariro

Saturday Aug 04, 2012 09:50 AM | DOOR: T

Strong spattering and a lava flow from the new cone in the eastern vent of Bocca Nuova on the evening of 3 Aug 2012
Strong spattering and a lava flow from the new cone in the eastern vent of Bocca Nuova on the evening of 3 Aug 2012
No major volcanic activity is happening at the moment. Here are some updates on current activity at some volcanoes, most of which are semi-permanently active:

Etna (Italy): An increase of activity started on the evening of 3 Aug. We observed increasing strombolian activity and near-continuous spattering in the Bocca Nuova, and strong SO2 emissions from the New SE crater.

Batu Tara (Sunda Islands, Indonesia) produced an ash cloud reaching 1.8 km altitude on 4 Aug.

Nevado del Ruiz (Colombia): Weak tremor and gas and ash emissions continue. The volcano remains at orange alert. The other volcano in Colombia of major concern, Galeras, is relatively calm these days.

Popocatépetl in Mexico: The activity at Popocatépetl remains at low to moderate levels compared to previous weeks. A medium to large explosion occurred at 18:04 local time on 3 Aug and produced an ash cloud rising 2.5 km and drifting west.

Sakurajima volcano: The rate and intensity of explosions have dropped over the past days. Only two small eruptions have occurred at 21:06 and 03:19 UTC on 3 Aug producing ash clouds rising to 1.5-1.8 km altitude.

Tongariro (New Zealand): Seismic unrest continues with tremor and earthquakes visible on the seismic recordings for the volcano. No new reports from GeoNet in New Zealand, but the alert level remains at 1.
Vorig nieuws
SO2 plume from Kilauea volcano on 30 July (NOAA)
Thursday, Aug 02, 2012
Yasur (Vanuatu) has shown an increase in activity and was set on alert level 3, meaning that the access to the crater is currently closed, as bombs are falling outside the crater rim and into the car park area. ... [meer...]
Wednesday, Aug 01, 2012
Etna (Italy): The strombolian activity in Bocca Nuova continues and the intracrater cone slowly grows. At the moment, the tremor is slowly rising, suggesting an increase in activity. ... [meer...]
Tuesday, Jul 31, 2012
Fuego volcano (Guatemala): Latest observations suggest a decreasing trend in activity, but strombolian eruptions continue with explosions producing 200-500 m high ash clouds, and at least one lava flow is still active. Seismic activity is at moderate levels. ... [meer...]
Tuesday, Jul 31, 2012
Volcanoes in Kamchatka have been relatively calm over the past week. ... [meer...]

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