We identify and investigate the intermittent propagation of upward positive and negative leaders in rocket‐triggered lightning based on comprehensive observations of fine time‐resolved optical, current, and electromagnetic fields. There is an abrupt luminous crown blooming due to the achievement of a positive leader step, after which the channel weakens and the head degrades. During the positive leader pausing, residual structure is recognized at area of previous luminous crown blooming, in the form of a floating segment. Our observation point to a possible mechanism that it connects with the positive leader head, causing a forward‐step and a sharp current pulse. This is to some extent similar to negative leader stepping, in which the space leader emerges and connection between the space leader and the channel head occurs. The generation of clustered space leaders give rise to negative channel branching, but the residual structure in positive leader just leads to individual step.

中文翻译：

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夜光冠残留Vs. 明亮空间部分：触发闪电的间歇性正负引导器的特征结构

我们基于对精细时间分辨的光场，电流场和电磁场的综合观察，识别并研究火箭触发的闪电中正向和负向引导者的间歇传播。由于完成了前导步阶，因此突然出现了一个发光的冠状冠，此后，通道变弱，头部下降。在正向引线暂停期间，以浮动段的形式在先前的发光冠晕区域识别出残余结构。我们的观察结果表明，它可能与正引导头相连，从而导致正向步进和尖锐的电流脉冲。在某种程度上，这类似于负向引导步进，其中空间引导出现，空间引导与通道头之间发生连接。