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  • Rotation is key to understanding volcanic plumes, scientists say

    In 2008, the Mount Chaiten eruption in southern Chile showed what appeared to be a volcanic plume wrapped in a sheath of lightning.

    In 2008, the Mount Chaiten eruption in southern Chile showed what appeared to be a volcanic plume wrapped in a sheath of lightning.

    Photo by UPI/Landov

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      In 2008, the Mount Chaiten eruption in southern Chile showed what appeared to be a volcanic plume wrapped in a sheath of lightning.

      Photo by UPI/Landov

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      Gustavo Gioia, left, professor of mechanical science and engineering; Pinaki Chakraborty, a postdoctoral researcher; and Susan Kieffer, a professor of geology, have found the origins of "volcanic mesocyclones."

      Photo by L. Brian Stauffer

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