摘要
简要地叙述了北京1991年夏天利用火箭-导线技术两次引雷成功的结果.两次引雷成功均是在地面电场为正(即正电荷当顶)时触发的.触发时地面电场分别为3.1kV/m和2.5kV/m,高度在300-400m之间.分析表明,两次火箭引雷均系火箭上升到一定高度时激发上行负流光,然后产生连续对地放正电的过程,无回击发生.简单模式分析表明,中和电量小于10C,火箭上升过程导线中电晕电流约为4mA.
In this paper we present briefly the results of two successful triggered lightnings with rocket-wire technique in Beijing area in 1991. They were all triggered when electric fields at ground were positive(positive charge overhead),specifically 3.2kV/m and 2.5kV/m respectively.Analysis shows that triggered lightnings were Small discharges initialed by upward going negative Streamer followed by continuous current process.No return strokes were recorded.The triggering heights were within 300-400m.Charges they transfered were less than 10C and corona currents along wire during rockets rising were about 4mA.
出处
《地球物理学报》
SCIE
EI
CSCD
北大核心
1994年第2期167-173,共7页
Chinese Journal of Geophysics
关键词
人工引发雷电
电场
上行流光
Artificially triggered lightning
Electric field
Upward streamer