| Comparative analysis of the initial stage in two artificially-triggered lightning flashes | |
| Yang, J.1; Qie, X.1; Zhang, Q.2; Zhao, Y.2; Feng, G.2; Zhang, T.2; Zhang, G.2 | |
| 刊名 | ATMOSPHERIC RESEARCH
 |
| 2009-02-01 | |
| 卷号 | 91期号:2-4页码:393-398 |
| 关键词 | Triggered flashes Initial stage Current Electric field and magnetic field |
| ISSN号 | 0169-8095 |
| DOI | 10.1016/j.atmosres.2008.04.010 |
| 通讯作者 | Yang, J.(yangj@mail.iap.ac.cn) |
| 英文摘要 | The initial discharge stages of two flashes during the Shandong Artificially Triggering Lightning Experiment (SHATLE) are analyzed based on the synchronous data of the current and close electromagnetic field. For a lightning flash, named 0503, the wire was connected, not electrically, but via a 5 m length of nylon, with the lightning rod; while for another, named 0602, the wire was connected with the rod directly. Results show that the discharge processes of the initial stage (IS) in flash 0503 are quite different from that of the usual classical-triggered flash 0602 and altitude-triggered flashes. A large pulse with a current of about 720 A resulted from the breakdown of the 5 m air gap during flash 0503, and the corresponding electric field at 60 m from the lightning rod was 038 kV/m. The upward positive leaders (UPLs) propagated continuously from the tip of the rocket after this breakdown. The geometric mean (GM) of the UPL peak current was 23.0 A. Vaporization of the wire occurred during the initial continuous current (ICC) stage and the largest current pulse was about 400 A. Compared with triggered flash 0503, the discharge processes of IS in flash 0602 were simple, only two large pulses similar to each other occurred before dart leader/return stroke sequences. The peak current of the first pulse was 2.1 kA and its corresponding electric field and magnetic field at a distance of 60 m from the lightning rod were 0.98 kV/m and 7.03 mu T, respectively. During the second pulse, the wire disintegrated. The current decreased to the background level at the moment of the wire disintegration. The current of the second pulse in triggered flash 0602 was 2.8 kA, and the corresponding electric field and magnetic field at 60 m from the lightning rod were 1.22 kV/m and 9.01 mu T, respectively. (C) 2008 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI ; ISTP |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE INC |
| WOS记录号 | WOS:000263193900033 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2556246 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Yang, J. |
| 作者单位 | 1.Chinese Acad Sci, Lab Middle Atmosphere & Global Environm Observat, Inst Atmospher Phys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, J.,Qie, X.,Zhang, Q.,et al. Comparative analysis of the initial stage in two artificially-triggered lightning flashes[J]. ATMOSPHERIC RESEARCH,2009,91(2-4):393-398. |
| APA | Yang, J..,Qie, X..,Zhang, Q..,Zhao, Y..,Feng, G..,...&Zhang, G..(2009).Comparative analysis of the initial stage in two artificially-triggered lightning flashes.ATMOSPHERIC RESEARCH,91(2-4),393-398. |
| MLA | Yang, J.,et al."Comparative analysis of the initial stage in two artificially-triggered lightning flashes".ATMOSPHERIC RESEARCH 91.2-4(2009):393-398. |
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