Guest Thinkers — September 1, 2010

SI/USGS Weekly Volcano Activity Report for 6/10-16/2009

The latest in volcano news from around the world, this week including sizeable ash plumes in Peru, Indonesia and Russia, a measurement of the dome at Redoubt and things calming down at Galeras.

Erik Klemetti

Your weekly dose of volcano news brought you by the Smithsonian Institute GVP and the USGS.

This week’s highlights (not counting Sarychev Peak and Turrialba) include:

13,000 foot / 4 km ash plumes from Rinjani in Indonesia. This is part of the continuing eruption there.

The alert level was lowered at Galeras, Colombia to “Orange” after intense eruptions last week.

The current lava dome at Redoubt is 1 km long, 460 m wide, and 200 m high according to the latest images from the Alaskan volcano.

18,000-23,000 foot / 4.8-7.7 km ash plumes from Shiveluch in Kamchatka, along with thermal anomalies over the lava dome, suggesting new magma at the surface.

More ash emitted from Ubinas in Peru, reaching 26,000 feet / 7.9 km.

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