Lightning Effects on the Grain Size Distribution of Volcanic Ash

Natural volcanic ashfall samples were examined, and high‐current (~100 kA) electrical impulse experiments were conducted to reveal the changes in grain size that can occur during lightning discharge. Experiments on pseudo ash samples manufactured from volcanic deposits of both rhyolitic and basaltic...

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Veröffentlicht in:	Geophysical research letters 2019-03, Vol.46 (6), p.3133-3141
Hauptverfasser:	Genareau, K., Wallace, K. L., Gharghabi, P., Gafford, J.
Format:	Artikel
Sprache:	eng
Schlagworte:	Aggregates ashfall Bubbles Deposits Electric pulses Eruptions Experiments Fragmentation Grain size Grain size distribution High temperature Lightning Lightning discharges Lightning effects LIVS Particle size Particle size distribution Pavlof Pumice redoubt Size distribution Spheres Spherules Volcanic activity Volcanic ash Volcanic deposits Volcanic eruptions volcanic lightning Volcanoes
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