Guest Thinkers — September 1, 2010

SI/USGS Weekly Volcano Activity Report for 4/22-28/2009

Keep up with the week’s volcanism with the latest USGS/SI update.

The weekly USGS/SI roundup is out. Highlights (beyond Slamet) include:

Explosions (some heard 25 km away) and incandescent blocks that started fires at Galeras, Colombia.

Ash and tephra being thrown tens of meters into the air and a 4-m tall spatter cone being built at Pacaya, Guatemala

Also in Guatemala, Santa Maria’s Santiaguito dome produced ash plumes and explosions.

Steam, ash and sulfur odors from the continuing eruption at Redoubt, Alaska.

Increased seismicity, steam and ash plumes along with a thermal anomaly at El Reventador in Ecuador

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Up Next

Either the eruption at Fernandina has kicked back up again, or, based on the accompanying photo, we’ve landed on Gliese 581 D.