Uploaded April 2016 | Updated September 2026, 2 weeks ago

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We recorded volcanic lightning generated by Vulcanian explosions at Sakurajima volcano using a synchronized multiparametric array. Physical properties of lightning are related to plume dynamics and associated electromagnetic field variations are revealed by video observations (high- and normal-speed) together with infrasound and high sampling-rate magnetotelluric signals.

Data show that volcanic lightning at Sakurajima mainly occurs in the plume gas-thrust region at a few hundred meters above the crater rim, where the overpressure of the turbulent volcanic jets determines the electrification of particles generating a complex charge structure in the growing plume.

More Info: DOI: 10.1002/2015GL067445

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