Characteristics of winter lightning current on Japan Sea Coast
Characteristics of winter lightning current on Japan Sea Coast
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日本海岸冬季雷电流特征
DOI：
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
K. Shinjou
中科院分区：
文献类型：
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作者：
K. Miyake;T. Suzuki;K. Shinjou
自1978年以来，日本沿海对冬季闪电进行了长期观测。根据各种观测资料，报道了用雷电电流自动记录系统测量雷电电流的结果。结果表明，冬季闪电电流的波形变化较大，但锋面持续时间、尾部持续时间和锋面陡度的频率分布可用对数正态分布近似。正极闪电电流的前后持续时间往往比负极闪电电流长得多。冬季闪电的正负极比为1：2，远高于夏季闪电。冬季闪电电流峰值的累积频率分布与夏季闪电电流峰值的累积频率分布基本一致。提出了冬季防雷设计中采用分数分布的方法。>；
Long-term observation of winter lightning has been conducted on the Japan Sea Coast since 1978. From various kinds of observations, the results of lightning current measurement by an automatic lightning current recording system are reported. It is shown that winter lightning current has wide variations in its waveform, but the frequency distribution of the front duration, the tail duration, and the front steepness can be approximated by a logarithmic normal distribution. Positive polarity lightning current tends to have much longer front and tail duration than negative lightning current. The ratio of the positive to the negative polarity is one to two in winter lightning, which is much higher than that of summer lightning. The cumulative frequency distribution of the winter lightning current peak agrees with that of the summer lightning current. The fractional distribution was proposed for winter lightning protection design. >