I was chatting with a fellow from AVO and he called the simultaneous eruptions of Kasatochi, Cleveland and Okmok a "once in a millennia" event. So, enjoy it!
He also mentioned that the Kasatochi eruption released the most sulfur dioxide into the atmosphere since the 1991 Pinatubo eruption ... but we had an idea of that already.
And who knew that there has been uplift at Uturuncu in Bolivia? I sure didn't, but Steve Sparks does.
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More to come later this week when I can go to all the Chaiten posters.
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The eruption of Kasatochi was a bit of a surprise to volcanologists who study the Aleutians, to say the least. The volcano itself has been quiet for likely over 100 years, but with relatively little warning, the volcano erupted over the summer, blasting ash (and a large amount of sulfur dioxide)…
The Okmok Caldera eruption is still going on, almost a month after it started. The latest USGS/SI Weekly Report states:Â
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Strong volcanic tremor on 2 August prompted AVO  to raise the Volcano Alert Level to Warning and the Aviation Color Code to Red. Cloudy conditions prevented satellite…
Here it is, my attempt to recap a year's worth of volcanic events. By no means is this supposed to capture every event, but rather the highlight/lowlights and what most captivated me during 2009. I'll be announcing the winner of the 2009 Pliny for Volcanic Event of the Year tomorrow.
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Chaiten in Chile erupting in January 2009. Even after over a year of activity, Eruptions readers are still captivated by the volcano.
Thanks for sending me your questions about volcanoes and volcanism. I'll try to tackle some hear - but as always, keep the questions coming! Send them to
For those…
The Smithsonian gives the height of the volcano at 6008 meters or19,711 feet.
I should have mentioned that it is the height of the "Uturuncu in Bolivia" that is over 6000 meters (almost twenty-thousand feet high). There must be a massive amount of pressure under there to be raising this mountain.
And as far as simultaneous eruptions - weren't there a lot of major caldera eruptions in Kamchatka about 40,000-42,000 years ago?
So, if a large amount of sulfur dioxide has been released, can we expect cooling in the Northern Hemisphere? I recall that Pinatubo resulted in measurable cooling due to the SO2 effects.