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Atmosphere 2017, 8(2), 29;

On the Possible Origin of Chaotic Pulse Trains in Lightning Flashes

Ångstrom Laboratory, Division of Electricity, Department of Engineering Sciences, Uppsala University, Box 534, Uppsala SE-75121, Sweden
Faculty of Electronics and Computer Engineering, Telecommunication Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, Durian Tunggal, Malacca 76100, Malaysia
Department of Physics, University of Colombo, Colombo 03, Sri Lanka
Faculty of Electric Engineering, Centre for power Electrical Engineering Studies, Universiti Teknologi Mara, Shah Alam, Selangor 40450, Malaysia
Authors to whom correspondence should be addressed.
Academic Editor: Robert Talbot
Received: 30 October 2016 / Revised: 29 January 2017 / Accepted: 30 January 2017 / Published: 5 February 2017
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In this study, electromagnetic field radiation bursts known as chaotic pulse trains (CPTs) and regular pulse trains (RPTs) generated by lightning flashes were analyzed. Through a numerical analysis it was found that a typical CPT could be generated by superimposing several RPTs onto each other. It is suggested that the chaotic pulse trains are created by a superposition of several regular pulse trains. Since regular pulse trains are probably created by dart or dart-stepped leaders or K-changes inside the cloud, chaotic pulse trains are caused by the superposition of electric fields caused by more than one of these leaders or K-changes propagating simultaneously. The hypothesis is supported by the fact that one can find regular pulse trains either in the beginning, middle or later stages of chaotic pulse trains. View Full-Text
Keywords: regular pulse train; chaotic pulse train; numerical superposition; HF radiation regular pulse train; chaotic pulse train; numerical superposition; HF radiation

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Ismail, M.M.; Rahman, M.; Cooray, V.; Fernando, M.; Hettiarachchi, P.; Johari, D. On the Possible Origin of Chaotic Pulse Trains in Lightning Flashes. Atmosphere 2017, 8, 29.

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