QQ客服 官方微博 反馈留言

	Some features of stepped and dart-stepped leaders near the ground in natural negative cloud-to-ground lightning discharges
	Qie, X; Yu, Y; Guo, C; Laroche, P; Zhang, G; Zhang, Q
刊名	ANNALES GEOPHYSICAE
	2002-06-01
卷号	20期号:6页码:863-870
关键词	meteology and atmospheric dynamics atmospheric electricity lightning radio science electromagnetic noise and interference
ISSN号	0992-7689
通讯作者	Qie, X()
英文摘要	Characteristics of the electric fields produced by stepped and dart-stepped leaders 200 mus just prior to the return strokes during natural negative cloud-to-ground (CG) lightning discharges have been analyzed by using data from a broad-band slow antenna system with 0.08 mus time resolution in southeastern China. It has been found that the electric field changes between the last stepped leader and the first return stroke could be classified in three categories. The first type is characterized by a small pulse superimposed on the abrupt beginning of the return stroke, and accounts for 42% of all the cases. The second type accounts for 33.3% and is characterized by relatively smooth electric field changes between the last leader pulse and the following return stroke. The third type accounts for 24.7%. and is characterized by small pulses between the last recognizable leader pulse and the following return stroke. On the average, the time interval between the successive leader pulses prior to the first return strokes and subsequent return strokes was 15.8 mus and 9.4 mus, respectively. The distribution of time intervals between successive stepped leader pulses is quite similar to Gaussian distribution while that for dart-stepped leader pulses is more similar to a log-normal distribution. Other discharge features, such as the average time interval between the last leader step and the first return stroke peak, the ratio of the last leader pulse peak to that of the return stroke amplitude are also discussed in the paper.
收录类别	SCI
WOS关键词	ELECTRIC-FIELD
WOS研究方向	Astronomy & Astrophysics ; Geology ; Meteorology & Atmospheric Sciences
WOS类目	Astronomy & Astrophysics ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
语种	英语
出版者	EUROPEAN GEOPHYSICAL SOC
WOS记录号	WOS:000176676200011
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2556783
专题	寒区旱区环境与工程研究所
通讯作者	Qie, X
作者单位	1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 2.Off Natl Etud & Rech Aerosp, Chatillon, France
推荐引用方式 GB/T 7714	Qie, X,Yu, Y,Guo, C,et al. Some features of stepped and dart-stepped leaders near the ground in natural negative cloud-to-ground lightning discharges[J]. ANNALES GEOPHYSICAE,2002,20(6):863-870.
APA	Qie, X,Yu, Y,Guo, C,Laroche, P,Zhang, G,&Zhang, Q.(2002).Some features of stepped and dart-stepped leaders near the ground in natural negative cloud-to-ground lightning discharges.ANNALES GEOPHYSICAE,20(6),863-870.
MLA	Qie, X,et al."Some features of stepped and dart-stepped leaders near the ground in natural negative cloud-to-ground lightning discharges".ANNALES GEOPHYSICAE 20.6(2002):863-870.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。