globalchange  > 气候减缓与适应
DOI: 10.1029/2017JD027997
Scopus记录号: 2-s2.0-85047603881
论文题名:
Abrupt Elongation (Stepping) of Negative and Positive Leaders Culminating in an Intense Corona Streamer Burst: Observations in Long Sparks and Implications for Lightning
作者: Kostinskiy A.Y.; Syssoev V.S.; Bogatov N.A.; Mareev E.A.; Andreev M.G.; Bulatov M.U.; Sukharevsky D.I.; Rakov V.A.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期:10
起始页码: 5360
结束页码: 5375
语种: 英语
英文摘要: Properties of positive and negative leaders developing in air gaps ranging from 4 to 10 m that were subjected to 100/7,500-μs voltage impulses were examined using a two-frame, high-speed video camera with image enhancement. Abrupt extension (stepping) that culminated in a bright and structured corona streamer burst was observed for both negative (expected for the “classical” stepping process) and positive (expected for the so-called restrike process) leaders. Selected high-quality images of five negative and four positive leaders with pronounced corona streamer bursts are presented here. The morphology of corona streamer bursts was essentially independent of polarity. Streamer bursts exhibiting nearly spherical symmetry were observed. For the four positive leaders, the newly added channel sections (steps) were almost straight and had lengths ranging from about 50 to over 120 cm. For the five negative leaders, most of the steps were curved and their 2-D lengths were some tens of centimeters. It is generally thought that positive leaders in both long sparks and lightning extend continuously or exhibit optically unresolvable steps whose length is comparable to the leader tip size (1 cm or less) and that for sparks only when the absolute humidity is relatively high (>10 g/m3 or so) or voltage rise time is relatively long (around 1 ms or more) can larger steps occur. In this study, both modes of propagation for different branches of the same positive leader were observed. ©2018. American Geophysical Union. All Rights Reserved.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113855
Appears in Collections:气候减缓与适应

Files in This Item:

There are no files associated with this item.


作者单位: Institute of Applied Physics RAS, Nizhny Novgorod, Russian Federation; National Research University Higher School of Economics, Moscow, Russian Federation; Tikhonov Moscow Institute of Electronics and Mathematics, High-Voltage Research Center of the Zababakhin All-Russian Scientific Research Institute of Technical Physics, Istra, Russian Federation; Department of Electrical and Computer Engineering, University of Florida, Gainesville, FL, United States

Recommended Citation:
Kostinskiy A.Y.,Syssoev V.S.,Bogatov N.A.,et al. Abrupt Elongation (Stepping) of Negative and Positive Leaders Culminating in an Intense Corona Streamer Burst: Observations in Long Sparks and Implications for Lightning[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(10)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Kostinskiy A.Y.]'s Articles
[Syssoev V.S.]'s Articles
[Bogatov N.A.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Kostinskiy A.Y.]'s Articles
[Syssoev V.S.]'s Articles
[Bogatov N.A.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Kostinskiy A.Y.]‘s Articles
[Syssoev V.S.]‘s Articles
[Bogatov N.A.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.