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DOI | 10.1029/2019JD030990 |
Progression Features of Dart Leaders in Natural Negative Cloud-to-Ground Lightning Flashes | |
Huang, Haitao; Wang, Daohong; Wu, Ting; Takagi, Nobuyuki | |
2019-11-08 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:21页码:11143-11154 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan |
英文摘要 | We have analyzed the propagation process of nine dart leaders in four natural negative lightning flashes observed by a high speed optical system LAPOS 5. The propagation speeds range from 0.6 to 3.7x10(7) m/s with an average value of 1.5x10(7) m/s. The leader luminosity peaks at the front part of the leader head and decreases gradually backward within the head. The leader channel behind the leader head has a relatively low and constant luminosity. The average luminosity of the leader head is about 1.3 times brighter than that of the leader channel behind. The head lengths of seven dart leaders were estimated to range from 21 to 88 m. Our results show that as the ground is approached, the dart leader propagates faster with its leader head growing brighter and longer. For different strokes within an individual lightning flash, it was found that the larger change ratio of leader head brightness relates with the larger change ratio of propagation speed and the larger change ratio of leader head length. |
英文关键词 | dart leader high speed optical observation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000495395800001 |
WOS关键词 | RETURN STROKES ; SPEED |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
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/225763 |
专题 | 环境与发展全球科技态势 |
作者单位 | Gifu Univ, Dept Elect Elect & Comp Engn, Gifu, Japan |
推荐引用方式 GB/T 7714 | Huang, Haitao,Wang, Daohong,Wu, Ting,et al. Progression Features of Dart Leaders in Natural Negative Cloud-to-Ground Lightning Flashes[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(21):11143-11154. |
APA | Huang, Haitao,Wang, Daohong,Wu, Ting,&Takagi, Nobuyuki.(2019).Progression Features of Dart Leaders in Natural Negative Cloud-to-Ground Lightning Flashes.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(21),11143-11154. |
MLA | Huang, Haitao,et al."Progression Features of Dart Leaders in Natural Negative Cloud-to-Ground Lightning Flashes".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.21(2019):11143-11154. |
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