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Q&A: What happens when a volcano beneath a glacier erupts?
Researchers Jim Ciarrocca, Ben Edwards and Ellie Was study lava under Iceland's Gigjökull glacier.
Credit: Dickinson College
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View of the Eyjafjallajökull crater. By 2012, ice had again covered the crater floor.
Credit: Ben Edwards
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The glacier is covered with volcanic ash, and steam rises as glacial meltwater meets lava flow.
Credit: Ben Edwards
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View looking down the volcano's flank; the lower part of the lava flow has a "blocky" surface.
Credit: Ben Edwards
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An empty lagoon, where a glacial dam burst during the eruption, is at the glacier's lower end.
Credit: Ben Edwards
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Two years after the eruption: A view upward showing the lower end of the lava flow and the glacier.
Credit: Ben Edwards
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