Optical Evidence of Bi-directional Leader Process in Altitude-triggered Negative Lightning

摘要：

It is the first time, by using a high-speed camera system with the rate of 2000 frames per second (fps), that the optical evidences of the initiation processes of altitude-triggered negative lightning (ATNL) are observed with complete time series. The initiation contains several processes, I.e., the inception and propagation of the upward positive leader (UPL), the bi-directional leader process which contains the simultaneous propagation of UPL and downward negative leader (DNL), “mini-return stroke (MRS), and the upward discharge from the bottom of the triggering wire after MRS, etc. Combined with the observation of electric field change with 0.2 μ s time resolution, those processes are analyzed in detail.

作者: Weitao Lu Yijun Zhang Xiuji Zhou Dong Zheng Qing Meng Ming Ma Shaodong Chen Fei Wang Xiushu Qie

作者单位: Laboratory of Lightning Physics and Protection Engineering,Chinese Academy of Meteorological Science Laboratory of Lightning Physics and Protection Engineering,Chinese Academy of Meteorological Science Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,

会议类型: 国际会议

会议名称: 第13届国际大气电学会议(The 13th International Conference on Atmospheric Electricity)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-08-13（万方平台首次上网日期，不代表论文的发表时间）