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DOI | 10.1029/2019GL085072 |
High-Speed Video Observations of Natural Lightning Attachment Process With Framing Rates up to Half a Million Frames per Second | |
Qi, Qi1,2,3; Lyu, Weitao1,3; Ma, Ying1,3; Wu, Bin1,3; Chen, Lyuwen4; Jiang, Ruijiao1,2,3; Zhu, Yanan5; Rakov, Vladimir A.6,7 | |
2019-11-11 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:21页码:12580-12587 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA; Russia |
英文摘要 | Using high-speed video cameras operating with framing rates of 20 and 525 kfps, we imaged the attachment process of a natural negative cloud-to-ground flash, occurring at a distance of 490 m. Nine upward leaders were observed. A total of 12 space stems/leaders in 47 steps of the downward negative stepped leader were captured. The two-dimensional length of them was between 2.0 and 5.9 m, with an average of 3.0 m. The average interstep interval, step length, and two-dimensional speed of the downward negative leader and that of upward positive leader were statistically analyzed. The last step of the downward negative leader making contact with the upward connecting leader was recorded. The two-dimensional length of the final imaged gap between the tips of opposite-polarity leaders was estimated to be about 13 m. |
英文关键词 | lightning attachment process high-speed video observations striking distance |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000495632400001 |
WOS关键词 | LEADER PROGRESSION MODEL ; NEGATIVE STEPPED LEADER ; STROKE SIMULATION ; TALL STRUCTURES ; EXPOSURE ; FLASHES |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/224994 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing, Peoples R China; 2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China; 3.Chinese Acad Meteorol Sci, Lab Lightning Phys & Protect Engn, Beijing, Peoples R China; 4.China Meteorol Adm, Inst Trop & Marine Meteorol, Guangzhou, Guangdong, Peoples R China; 5.Univ Alabama, Earth Syst Sci Ctr, Huntsville, AL 35899 USA; 6.Univ Florida, Dept Elect & Comp Engn, Gainesville, FL USA; 7.Natl Res Univ Higher Sch Econ, Moscow Inst Elect & Math, Moscow, Russia |
推荐引用方式 GB/T 7714 | Qi, Qi,Lyu, Weitao,Ma, Ying,et al. High-Speed Video Observations of Natural Lightning Attachment Process With Framing Rates up to Half a Million Frames per Second[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(21):12580-12587. |
APA | Qi, Qi.,Lyu, Weitao.,Ma, Ying.,Wu, Bin.,Chen, Lyuwen.,...&Rakov, Vladimir A..(2019).High-Speed Video Observations of Natural Lightning Attachment Process With Framing Rates up to Half a Million Frames per Second.GEOPHYSICAL RESEARCH LETTERS,46(21),12580-12587. |
MLA | Qi, Qi,et al."High-Speed Video Observations of Natural Lightning Attachment Process With Framing Rates up to Half a Million Frames per Second".GEOPHYSICAL RESEARCH LETTERS 46.21(2019):12580-12587. |
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