The statistical characteristics of current and magnetic field waveforms from triggered lightning experiments at the Guangzhou Field Experiment Site for Lightning Research and Testing (GFESLRT) during the summer of 2019 are presented in this article. The parameters of statistical distributions of return stroke current are analyzed for peak current, 10–90% risetime, half-peak width, and interstroke interval. The geometric mean of peak current is 12.4 kA. The time-related parameters of the magnetic field at different distances are reported and compared to previous reports of close distances, which indicate the magnetic field 10–90% risetime and 30–90% risetime increase with the distance. The geometric means of the magnetic field peak at 58, 90, and 1600 m are 121.1, 66.2, and 1.85 μT, respectively. The magnetic field shows a positive linear relationship with current peak values. The analysis of all magnetic field peaks at different distances suggests a distance dependence of r ^−0.92 .

中文翻译：

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离触发闪电很近的电流和磁场的统计特性

本文介绍了2019年夏季广州闪电研究与测试现场试验场（GFESLRT）触发闪电实验的电流和磁场波形的统计特征。分析了峰值电流、10-90% 上升时间、半峰宽和行程间隔的回程电流统计分布参数。峰值电流的几何平均值为 12.4 kA。报告了不同距离磁场的时间相关参数，并与之前的近距离报道进行了比较，这表明磁场上升时间增加 10-90%，上升时间增加 30-90%。58、90和1600 m处磁场峰值的几何平均值分别为121.1、66.2和1.85 μT。磁场与电流峰值呈正线性关系。对不同距离处所有磁场峰值的分析表明，距离依赖性为r ^-0.92 .