Conductivity characteristics and corona sheath radius of lightning return stroke channel

doi:10.1016/j.atmosres.2021.105649

CORC > 兰州理工大学 > 兰州理工大学 > 理学院

	Conductivity characteristics and corona sheath radius of lightning return stroke channel
	An, Tingting 3; Yuan, Ping 3; Wan, Ruibin 3; Chen, Rongrong 3; Liu, Guorong 2; Cen, Jianyong 4; Wang, Xuejuan 1
刊名	Atmospheric Research
	2021-08-15
卷号	258
关键词	Clouds Lightning protection Cloud-to-ground lightning Corona sheath radius Electrical conductivity distribution Leader charge Lightning return stroke Multiple returns Natural lightning Return stroke Spectra's Stroke channel
ISSN号	0169-8095
DOI	10.1016/j.atmosres.2021.105649
英文摘要	The characteristics of lightning corona sheath are of common concern in the lightning physics and lightning protection research. Using the spectra of two natural cloud-to-ground lightning including multiple return strokes recorded by a slit-less spectrograph, we investigated the electrical conductivity distribution along the radial direction of the channel. The results indicated that a high conductivity channel of above 104 S/m existed within an average radius of around 1.8 cm and corresponded to the temperature of around 20,000 K. This finding reflects the characteristics of the current-carrying channel. The electrical conductivity decayed steeply to about 500 S/m with increasing radius and then decayed slowly. Based on these results, it was estimated that the corona sheath radii of the return stroke channel were around 3.34–19.10 cm. The corona sheath radius was positively correlated with the leader charge quantity and the apparent diameter of the corresponding leader channel. A wide corona-channel radius corresponds to an intense discharge. © 2021 Elsevier B.V.
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000659170000001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148355]
专题	理学院
作者单位	1.Key Laboratory of Meteorological Disaster, Ministry of Education (KLME)/Joint International Research Laboratory of Climate and Environment Change (ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD)/Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science & Technology, Nanjing; 210044, China 2.Department of Physics, Lanzhou University of Technology, Lanzhou; 730050, China; 3.Key Laboratory of Atomic and Molecular Physics and Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou; Gansu; 730070, China; 4.School of Physics and Information Engineering, Shanxi Normal University, Linfen; Shanxi; 041004, China;
推荐引用方式 GB/T 7714	An, Tingting,Yuan, Ping,Wan, Ruibin,et al. Conductivity characteristics and corona sheath radius of lightning return stroke channel[J]. Atmospheric Research,2021,258.
APA	An, Tingting.,Yuan, Ping.,Wan, Ruibin.,Chen, Rongrong.,Liu, Guorong.,...&Wang, Xuejuan.(2021).Conductivity characteristics and corona sheath radius of lightning return stroke channel.Atmospheric Research,258.
MLA	An, Tingting,et al."Conductivity characteristics and corona sheath radius of lightning return stroke channel".Atmospheric Research 258(2021).