摘要
通过对１９９３年７月２７日的人工触发闪电电流、跨步电压的直接测量结果的分析发现，在正电场下触发的慢型放电过程由连续电流和双极性的电流脉冲过程组成，其放电特性与雷暴的电特性有关。闪电电流最大值为１．２ｋＡ，持续时间为２５ｍｓ，中和电荷量为８．９Ｃ。跨步电压与电流的测量结果相一致，是一种间接测量电流的方法。
Artificially triggered lightning discharge current and step voltage were measured on July 27, 1993. Tbe results show that artificially triggered 'slow' discharge process consisted of continuous current and current pulses when the positive electric field dominated on the ground. Tbe current pulses were bipolar. The lightning discharge characteristic was relative to the electric characteristic of thunderstorm. The maximum of lightning current was 1.2 kA. The duration of the lightning was 25 ms. The electric charge neutralized by the triggered lightning was 8.9 C. Measurement result of step volt- age was consistent with that of current. It is a indirect measurement method of lightning current.
出处
《高原气象》
CSCD
北大核心
1995年第1期74-79,共6页
Plateau Meteorology
基金
国家自然科学基金
关键词
人工触发闪电
电流
跨步电压
Artificially triggered lightning
Current
Step voltage.
