Three dart leader (DL)-M components in two double-branch lightning flashes were analyzed through high-speed camera and synchronizing current and electric field data. The downward negative DL with a 2-D development speed of 1.2–1.8 × 106 m/s from the branch outside the main channel forms the M component after being intercepted by the main channel. The current waveform of DL-M component shows a typical “hook-shaped” waveform, and the electric field waveform can be clearly divided into DL part and M component part. The waveform of the DL part decreases slower than that of the M component part. Using current measured at the channel base as input, three models were used to simulate the corresponding electric field. The DL-M model, which takes the leader process into account, gives better modelling results.

中文翻译：

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火箭触发闪电中飞镖先导-M分量过程观测与模拟


通过高速相机和同步电流和电场数据，对两个双分支闪电中的三个镖头（DL）-M分量进行了分析。来自主河道外支流的二维发展速度为1.2~1.8×106 m/s的向下负DL被主河道拦截后形成M分量。 DL-M分量的电流波形呈现出典型的“钩形”波形，电场波形可以清晰地分为DL部分和M分量部分。 DL部分的波形比M分量部分的波形下降得慢。使用在通道底部测量的电流作为输入，使用三个模型来模拟相应的电场。 DL-M模型考虑了领导者过程，给出了更好的建模结果。