Multiphase turbulent flow explains lightning rings in volcanic

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Abstract

The Hunga Tonga-Hunga Ha'apai (HTHH) volcano erupted explosively on January 15, 2022, generating the highest concentration of lightning events ever recorded, exhibiting characteristic ring patterns. This study uses 3D simulations of buoyant plumes to reproduce these ring patterns, attributing them to turbulence-induced particle clustering, which facilitates charge concentration. The location, size, and persistence of these rings can reveal pulsatory vent activity hidden by the ash cloud, serving as a proxy for eruption parameters and hazardous environmental impacts.

Publisher

Communications Earth & Environment

Published On

Nov 15, 2023

Authors

Mie Ichihara, Pablo D. Mininni, S. Ravichandran, Corrado Cimarelli, Chris Vagasky

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