Observations on the leader-return stroke of cloud-to-ground lightning with the broadband interferometer
文献类型：期刊论文
| 作者 | Dong, WS; Liu, XS; Zhang, YJ; Zhang, GS |
| 刊名 | SCIENCE IN CHINA SERIES D-EARTH SCIENCES
 |
| 出版日期 | 2002-03-01 |
| 卷号 | 45期号:3页码:259-269 |
| 关键词 | broadband interferometer cloud-to-ground lightning preliminary breakdown stepped leader |
| ISSN号 | 1006-9313 |
| 通讯作者 | Dong, WS() |
| 英文摘要 | Radio frequency observations of cloud-to-ground lightning (CG) were made in 1999 in Guangdong Province with the broadband lightning interferometer. In this paper, radiation source locations and electric field waveforms are analyzed for different types of breakdown events, including the preliminary breakdown of in-cloud activities, the stepped leaders of initial strokes to ground and activities during and following return strokes. It is shown that the structure and development of lightning discharges and associated breakdown processes can be reconstructed by using this new type of lightning radiation source location system. The detectable radiation of lightning was primarily produced by the negative breakdown process. The channel was concentrated with few branches during the preliminary breakdown stage of CG lightning flashes. The radiation sources appeared generally at the tip of the channel. During the late period of the stepped leader, the radiation sources were dispersed with branches extended away from the main channel. The radiation sources were in a certain length segment of the channel and the altitude of the segment descended along with the propagation of the leader to the ground. During the preliminary breakdown and the stepped leader of initial strokes to the ground, a sequence of fast negative streamers were observed to start continually from or farther away the lightning-initiated region and propagate along the developed leader channel, which may supply negative charge that assisted the leader's development. The progression speed of fast negative streamers was about ten times faster than the average speed of lightning channel. |
| 收录类别 | SCI |
| WOS关键词 | RADIO |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000175470000008 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556816 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Dong, WS |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 2.Wuhan Univ, Sch Elect Engn, Wuhan 430072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dong, WS,Liu, XS,Zhang, YJ,et al. Observations on the leader-return stroke of cloud-to-ground lightning with the broadband interferometer[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2002,45(3):259-269. |
| APA | Dong, WS,Liu, XS,Zhang, YJ,&Zhang, GS.(2002).Observations on the leader-return stroke of cloud-to-ground lightning with the broadband interferometer.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,45(3),259-269. |
| MLA | Dong, WS,et al."Observations on the leader-return stroke of cloud-to-ground lightning with the broadband interferometer".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 45.3(2002):259-269. |
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来源：寒区旱区环境与工程研究所
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