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        Self-charging of the Eyjafjallajokull volcanic ash plume

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        904167.pdf (PDF, 280Kb)
        Author
        Harrison, R.G.
        Nicoll, K.A.
        Ulanowski, Z.
        Mather, T.A.
        Attention
        2299/4663
        Abstract
        Volcanic plumes generate lightning from the electrification of plume particles. Volcanic plume charging at over 1200 km from its source was observed from in situ balloon sampling of the April 2010 Eyjafjallajökull plume over Scotland. Whilst upper and lower edge charging of a horizontal plume is expected from fair weather atmospheric electricity, the plume over Scotland showed sustained positive charge well beneath the upper plume edge. At these distances from the source, the charging cannot be a remnant of the eruption itself because of charge relaxation in the finite conductivity of atmospheric air.
        Publication date
        2010
        Published in
        Environmental Research Letters
        Published version
        https://doi.org/10.1088/1748-9326/5/2/024004
        Other links
        http://hdl.handle.net/2299/4663
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