Leader-chasing behavior in negative artificial triggered lightning flashes

Two special cases of dart leader propagation were observed by the high-speed camera in the leader/return stroke sequences of a classical triggered lightning flash and an altitude-triggered lightning flash, respectively. Different from most of the subsequent return strokes preceded by only one leader...

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Bibliographic Details
Published in:Scientific reports 2021-06, Vol.11 (1), p.11598-11598, Article 11598
Main Authors: Wang, Fukun, Wang, Jianguo, Cai, Li, Su, Rui, Ding, Wenhan, Xu, Zhiling
Format: Article
Language:English
Subjects:
639/166/987
704/106/35
704/4111
Cameras
Competition
Electric fields
Humanities and Social Sciences
Morphology
multidisciplinary
Polarity
Propagation
Science
Science (multidisciplinary)
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Summary:Two special cases of dart leader propagation were observed by the high-speed camera in the leader/return stroke sequences of a classical triggered lightning flash and an altitude-triggered lightning flash, respectively. Different from most of the subsequent return strokes preceded by only one leader, the return stroke in each case was preceded by two leaders occurring successively and competing in the same channel, which herein is named leader-chasing behavior. In one case, the polarity of the latter leader was opposite to that of the former leader and these two combined together to form a new leader, which shared the same polarity with the former leader. In the other case, the latter leader shared the same polarity with the former leader and disappeared after catching up with the former leader. The propagation of the former leader in this case seems not to be significantly influenced by the existence of the latter leader.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-021-90940-x