Vigorous vent lightning observed during Eyjafjallajökull eruption

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Abstract

Volcanoes do more than spew rock and magma—they also produce electrical discharges. Various mechanisms, including high-energy silicate fracturing and boiling of water upon contact with magma, can produce electrical sparks near the vent of a volcano, whereas classic thunderstorm-like mixing in volcanic plumes can induce lightning kilometers above.

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