Guest Thinkers — September 1, 2010

SI/USGS Weekly Volcano Activity Report for 4/15-21/2009

Your weekly roundup of volcano news, including a big spike in sulfur dioxide emissions from Kilauea.

Highlights (beyond Fernandina, Pagan and Redoubt) include:

A new underwater eruption at NW-Rota 1 in the Mariana Islands.

Increasing seismicity and incandescence from the rhyolite domes forming at Chaiten, Chile.

A spike in sulfur dioxide emissions from Kilauea, Hawai’i to 700 tonnes/day (up from a 2003-07 average of 150 tonnes/day).

4.5-7.5 km / 15-26,000 foot ash columns produced at Shiveluch in Kamchatka from new lava dome.

Continued dome growth and ~6 km / 26,000 foot ash columns from Nevado del Huila, Colombia.

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Everything you ever wanted to know about Mt. Hood in Oregon (well, maybe not everything, but a lot), the second in my "Volcano Profiles" series.