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Influence of a single lightning on the intensity of an air electric field and acoustic emission of near surface rocks

Author(s): S. E. Smirnov | Y. V. Marapulets

Journal: Solid Earth Discussions
ISSN 1869-9537

Volume: 4;
Issue: 1;
Start page: 627;
Date: 2012;
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The effect of a single lightning discharge on electric field intensity in the near ground atmosphere was investigated. The effect appeared as a sharp fall of electric field potential gradient from 80 V m−1 up to −21 V m−1. The process of intensity recovery is described by flat capacitor model with characteristic time of recovery of 17 c. Simultaneously with electric field, the acoustic emission response in the near surface rocks on lightning discharge was registered in the frequency range of 6.5–11 kHz.
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