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12 June 2012
Citizen-scientists answer call for Icelandic volcano ash samples
When Iceland’s Grímsvötn volcano erupted in May 2011, ejecting 0.7 cubic kilometers (0.2 cubic miles) of ash far up into the atmosphere, most of the material headed north to the pole. Computer models predicted the path of the plume, satellites beamed back images, but one researcher turned to a low-tech and inexpensive method of tracking the ash fall – cellophane sticky tape.