2013/12/07 by Corrado Cimarelli, M. A. Alatorre‐Ibargüengoitia, Ulrich Kueppers +2 · 2 citations
Physics and Astronomy · Environmental Science · Engineering · #Lightning and Electromagnetic Phenomena #Fire effects on ecosystems #Aerosol Filtration and Electrostatic Precipitation
paper · pdf · doi:10.1130/g34802.1
openalex publication_date 2013/12/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/26
Explosive volcanic eruptions are commonly associated with intense electrical activity and lightning. Direct measurement of the electric potential at the vent, where the electric activity in the volcanic plume is first observed, is severely impeded, limiting progress in its investigation. We have achieved volcanic lightning in the laboratory during rapid decompression experiments of gas-particle mixtures under controlled conditions, and recorded it using a high-speed camera and two antennas. We find that lightning is controlled by the dynamics of the particle-laden jet and by the abundance of fine particles. The relative movement of clusters of charged particles generates the electrical potential, which is necessary for lightning. The experimental generation of volcanic lightning suggests that rapid progress can now be expected in understanding electrical phenomena in volcanic plumes to implement lightning monitoring systems and the forecasting of volcanic ash emissions.