| 闪电电磁辐射中的爆发式窄脉冲序列分析 |
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| 引用本文： | 王彦辉,张广庶,张彤,赵玉祥,李亚珺.闪电电磁辐射中的爆发式窄脉冲序列分析[J].高原气象,2009,28(5):1018-1024. |
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| 作者姓名： | 王彦辉 张广庶 张彤 赵玉祥 李亚珺 |
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| 作者单位： | 中国科学院,寒区旱区环境与工程研究所西部气候环境与灾害实验室,甘肃,兰州,730000 |
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| 基金项目： | 国家自然科学基金，中国科学院知识创新工程重要方向性项目 |
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| 摘 要： | 分析了发生于闪电放电过程中一类特殊放电现象\_\_爆发式窄脉冲序列。结果表明, 在30 min内测得的69例闪电放电过程中， 全部存在此类爆发式窄脉冲序列。针对6例典型闪电中包含的190例爆发式窄脉冲序列进行了详细分析， 发现窄脉冲典型宽度约为1 μs， 典型脉冲间隔4~8 μs。根据脉冲时间间隔变化和极性转换将其划分为正常型、 反向型、 对称型和反转型。负地闪和云闪产生的爆发式窄脉冲序列特征无明显差别， 而正地闪中的爆发式窄脉冲序列极性反转较为频繁。分析认为， 不同类型的RBPs可能对应流光等击穿过程在不同极性小电荷区间行进的过程。
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| 关 键 词： | 爆发式窄脉冲序列 地闪 云闪 流光 |
Analyses on Regular Pulses Burst in Electromagnetism Radiation of Lightning |
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| WANG Yan-hui,ZHANG Guang-shu,ZHANG Tong,ZHAO Yu-xiang,LI Ya-jun.Analyses on Regular Pulses Burst in Electromagnetism Radiation of Lightning[J].Plateau Meteorology,2009,28(5):1018-1024. |
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| Authors: | WANG Yan-hui ZHANG Guang-shu ZHANG Tong ZHAO Yu-xiang LI Ya-jun |
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| Abstract: | A special lightning discharge phenomena named as Regular Pulses Bursts(RPBs) was analysed. The results show that the RPBs exist in all 69 lightning discharges during 30 minutes. The 190 RPBs in six typical lightning was detailedly analysed. The typical width of pulses was about 1 μs, and time interval varied from 4 to 8 μs. Four types, normal RPBs, back RPBs, symmetry RPBs, reversal RPBs were classified according to the time interval and pulse polarity. There was no obvious difference between RPBs in negative cloud to ground(CG) lightning and that in intracloud lightning(IC), but in positive CGs most of the RPBs′ polarity is changeful. The analysis that, the variety of RPBs may be corresponding to the extended process of streamer among few small charge region. |
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| Keywords: | Regular pulses bursts Cloud to ground lightning Intracloud lightning Streamer |
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