气候变化领域集成服务门户(CCPortal): The Discharge Preceding the Intense Reillumination in Positive Leader Steps Under the Slow Varying Ambient Electric Field

CCPortal

DOI	10.1029/2019GL086183
	The Discharge Preceding the Intense Reillumination in Positive Leader Steps Under the Slow Varying Ambient Electric Field
	Huang S.; Chen W.; Pei Z.; Fu Z.; Wang L.; He T.; Li Z.; Gu J.; Bian K.; Xiang N.; Wang Y.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:3
英文摘要	Under the slow varying ambient electric field, positive leader propagation exhibits steps characterized by intense reilluminations and abrupt elongations. These steps are currently not well understood. In this work, we investigate these steps in laboratory atmospheric discharges, using a high-speed video camera and a synchronized electrical parameter measurement system. The discharge, emitting weak light and preceding the intense reillumination, is discovered. This finding suggests that the leader channel actually restarts and extends forward before the intense reillumination, which deepens our understanding of the dynamic process of the positive leader step. The discharge before the intense reillumination contributes to the corona inception from the electrode, leading to the intense reillumination of the leader channel and the emergence of an intense corona streamer burst from the leader tip. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	High speed cameras; Lightning; Video cameras; Atmospheric discharge; Corona inceptions; Corona streamers; Dynamic process; Electrical parameter measurement; High speed video cameras; leader step; Positive leaders; Electric discharges; atmospheric electricity; corona; discharge; electric field; lightning
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170745
作者单位	High Voltage Research Center, China Electric Power Research Institute, Beijing, China; State Grid Corporation of China, Beijing, China; State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, China; Electric Power Research Institute, State Grid Anhui Electric Power Company, Hefei, China; School of Electrical and Electronic Engineering, North China Electric Power University, Beijing, China; School of Electrical Engineering and Automation, Hefei University of Technology, Hefei, China; Key Laboratory of Hubei Province on Lightning Risk Prevention of Power Grids, Wuhan NARI Limited Liability Company, Wuhan, China
推荐引用方式 GB/T 7714	Huang S.,Chen W.,Pei Z.,et al. The Discharge Preceding the Intense Reillumination in Positive Leader Steps Under the Slow Varying Ambient Electric Field[J],2020,47(3).
APA	Huang S..,Chen W..,Pei Z..,Fu Z..,Wang L..,...&Wang Y..(2020).The Discharge Preceding the Intense Reillumination in Positive Leader Steps Under the Slow Varying Ambient Electric Field.Geophysical Research Letters,47(3).
MLA	Huang S.,et al."The Discharge Preceding the Intense Reillumination in Positive Leader Steps Under the Slow Varying Ambient Electric Field".Geophysical Research Letters 47.3(2020).