09 Jun '12, 2am

I knew the 1912 volcanic eruption in Alaska was big, but holy crap.

The land shook with at least fourteen earthquakes of magnitude 6 or higher. More than 13.5 cubic kilometers (3 cubic miles) of molten rock, or magma, blasted out of the Earth. Another 17 cubic kilometers of ash and volcanic debris spewed into the air or rolled across the hillside in pyroclastic flows. And it all happened in a matter of 60 hours. “That is a rate of nearly 220 million cubic meters per hour, which is roughly 520 million tons per hour,” wrote volcanologist and blogger Erik Klemetti. “Or to put it another way, that is about 5,300 Nimitz-class aircraft carriers per hour. Now that is an eruption!” The eruption of Novarupta volcano in Alaska from June 6–8, 1912, was the largest of the 20th century. By volume, it was three times the size of the Pinatubo eruption and 30 times that of Mount St. Helens. But because of the remote location—where the Alaskan Peninsula st...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=78202

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earthobservatory.nasa.gov 09 Jun '12, 1pm

The land shook with at least fourteen earthquakes of magnitude 6 or higher. More than 13.5 cubic kilometers (3 cubic miles...