DOI: 10.1002/2016GL070475
论文题名: A subsequent positive stroke developing in the channel of preceding negative stroke and containing bipolar continuing current
作者: Zhu Y. ; Rakov V.A. ; Tran M.D. ; Lu W.
刊名: Geophysical Research Letters
ISSN: 0094-8578
EISSN: 1944-8309
出版年: 2016
卷: 43, 期: 18 起始页码: 9948
结束页码: 9955
语种: 英语
英文关键词: bipolar lightning
; leader speed
; subsequent positive leader
Scopus关键词: Lightning
; Lightning protection
; Cloud-to-ground lightning flash
; Continuing current
; Height profiles
; Polarity reversal
; Positive leaders
; Stepped leader
; Stroke channel
; Time interval
; Clouds
英文摘要: A bipolar cloud-to-ground lightning flash was observed to exhibit two types of polarity reversal associated with the first two strokes separated by a not unduly long time interval of 70 ms. The first stroke was negative and had a peak current of −101 kA. The second stroke was positive, had a peak current of 16 kA and was followed by a 122 ms long bipolar continuing current. The first two strokes, including the bipolar continuing current, occurred in the same channel to ground, whose imaged 2-D length was 4.2 km. The occurrence of positive stroke in the negative-stroke channel is highly unusual. The 2-D speed versus height profiles for the negative stepped leader of the first stroke and, for the first time, for the positive leader in the previously conditioned, first-stroke channel were examined and the average speeds were found to be 4.7 × 105 m/s and 7.2 × 105 m/s, respectively. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84988844048&doi=10.1002%2f2016GL070475&partnerID=40&md5=a7d82c36a2c3fdb1108be47535bf6dff
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9541
Appears in Collections: 科学计划与规划 气候变化与战略
There are no files associated with this item.
作者单位: Department of Electrical and Computer Engineering, University of Florida, Gainesville, FL, United States
Recommended Citation:
Zhu Y.,Rakov V.A.,Tran M.D.,et al. A subsequent positive stroke developing in the channel of preceding negative stroke and containing bipolar continuing current[J]. Geophysical Research Letters,2016-01-01,43(18).