Relation between the near-Earth electric field at high latitudes and intense cloud-to-ground lightning strokes initiating VLF emission bursts |
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| Authors: | A V Frank-Kamenetsky O A Troshichev V N Morozov G Burns R Corney |
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| Institution: | (1) Arctic and Antarctic Research Institute, Russian Academy of Sciences, ul. Beringa 38, St. Petersburg, 199397, Russia;(2) Voeikov Main Geophysical Observatory, ul. Karbysheva 7, St. Petersburg, 194018, Russia;(3) Australian Antarctic Division, Kingston, Australia |
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| Abstract: | Since 1998, the gradient of the near-Earth atmospheric electric field potential (|Ez|) has been continuously registered at Vostok Antarctic station within the scope of the joint Russian-Australian project. The data of the continuous 10-day period of fine weather in April 1998 have been selected for the following analysis. The field |Ez| behavior at Vostok station was compared with a number of lightning strokes obtained from data of the ground-based network of electromagnetic measurements. It has been found out that the average hourly values of |Ez| evidently negatively correlate with the number of intense lightning strokes. The causes of these relations are discussed. The obtained results are interpreted based on a theory of global electric circuit. |
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