Physics
Scientific paper
Dec 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000georl..27.3833s&link_type=abstract
Geophysical Research Letters, Volume 27, Issue 23, p. 3833-3836
Physics
3
Meteorology And Atmospheric Dynamics, Meteorology And Atmospheric Dynamics: Atmospheric Electricity, Meteorology And Atmospheric Dynamics: Lightning, Meteorology And Atmospheric Dynamics: Theoretical Modeling
Scientific paper
A new quasi-electrostatic model of high altitude electric field generation due to the lightning-induced change of a thundercloud electric structure is presented. The key point of the model is the assumption that a highly conducting channel arises due to a cloud-to-ground (CG) discharge, which brings the ground potential to a region near the cloud bottom in some tens of milliseconds after the discharge initiation. Substantial increase in the electric field strength above the thundercloud at this moment is found. A horizontal extension of the lightning channel is taken into account in the framework of the bidirectional model of the channel propagation. This geometry provides a substantially bigger electric field perturbation than the simplest geometry of the vertical lightning channel does.
Chugunov Yu. V.
Mareev Eugene A.
Smirnova E. I.
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