Using lightning locating system based on time-of-arrival technique to study three-dimensional lightning discharge processes
文献类型：期刊论文
| 作者 | Zhang GuangShu1,2; Wang YanHui1,2; Qie XiuShu3; Zhang Tong1,2; Zhao YuXiang1,2,4; Li YaJun1,2; Cao DongJie1,2 |
| 刊名 | SCIENCE CHINA-EARTH SCIENCES
 |
| 出版日期 | 2010-04-01 |
| 卷号 | 53期号:4页码:591-602 |
| 关键词 | time-of-arrival (TOA) technique three dimensional lightning locating system discharge process narrow bipolar pulse new-type of IC lightning |
| ISSN号 | 1674-7313 |
| DOI | 10.1007/s11430-009-0116-x |
| 通讯作者 | Zhang GuangShu(zhanggs@lzb.ac.cn) |
| 英文摘要 | A time-of-arrival (TOA) system based on GPS technology for locating VHF radiation sources from lightning has been developed and used in observation sites in the northern Shandong Province, China. The 3D images of the lightning progression have been obtained successfully for the first time in China. The 3D-channel evolutions of typical negative CG, positive CG and IC lightning flashes have been discussed together with the data of fast electric field change. It was found that significant differences existed between the negative and positive CG lightning flashes in terms of the initiation and propagation of the radiation sources. The preliminary breakdown of a negative CG lightning flash propagated at a speed about 5.2x10(4) m/s. The stepped leader of negative CG lightning flashes was trigged by negative initial breakdown. Thereafter, it propagated downward at a speed of 1.3x10(5) m/s. The initial process of the positive CG lightning flashes was also a propagation process of negative streamer. These streamers propagated dominantly horizontally in the positive charge region and accumulated positive charges at the origin of the lightning, and as a consequence, initiated downward positive streamers. A new type of lightning discharge that was triggered by a narrow bipolar pulse (NBP) is discussed in this study. The NBP was originated at altitude of about 10.5 km in the upper positive charge region. As a distinct difference from normal IC flash, its channels extended horizontally all around and produced a lot of radiation sources. The source power of the NBP could approach 16.7 kW, which is much greater than that of normal lightning discharge ranging between 100 mW and 500 W. The 3D propagation of this new type of lightning discharge was observed and obtained for the first time in China. The possible initiation mechanism of this new type of lightning is discussed here. |
| 收录类别 | SCI |
| WOS关键词 | SUPERCELL THUNDERSTORMS ; INTERFEROMETER ; LEADER |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000276912200012 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556329 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Zhang GuangShu |
| 作者单位 | 1.Chinese Acad Sci, Lab Climate Environm & Disasters Western China, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Engn Res Inst, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Inst Atmospher Phys, Lab Middle Atmosphere & Global Environm Observat, Beijing 100029, Peoples R China 4.Tianshui Normal Coll, Dept Phys, Tianshui 741001, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang GuangShu,Wang YanHui,Qie XiuShu,et al. Using lightning locating system based on time-of-arrival technique to study three-dimensional lightning discharge processes[J]. SCIENCE CHINA-EARTH SCIENCES,2010,53(4):591-602. |
| APA | Zhang GuangShu.,Wang YanHui.,Qie XiuShu.,Zhang Tong.,Zhao YuXiang.,...&Cao DongJie.(2010).Using lightning locating system based on time-of-arrival technique to study three-dimensional lightning discharge processes.SCIENCE CHINA-EARTH SCIENCES,53(4),591-602. |
| MLA | Zhang GuangShu,et al."Using lightning locating system based on time-of-arrival technique to study three-dimensional lightning discharge processes".SCIENCE CHINA-EARTH SCIENCES 53.4(2010):591-602. |
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来源：寒区旱区环境与工程研究所
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