| 雷暴对流起电机制理论分析 |
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| 引用本文： | 言穆弘,郭昌明,刘欣生.雷暴对流起电机制理论分析[J].大气科学,1991,15(2):120-128. |
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| 作者姓名： | 言穆弘 郭昌明 刘欣生 |
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| 作者单位： | 兰州高原大气物理研究所
(言穆弘，郭昌明)，兰州高原大气物理研究所(刘欣生) |
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| 摘 要： | 本文用一维分层模式理论分析了地面降雨、尖端放电、对流运动以及云外电导率变化对雷暴电结构的影响。分析指出,云内对流强度明显地影响着雷暴电结构,强烈的地面降雨和尖端放电可使地面电场强度显著减小,甚至极性翻转。闪电和云顶附近的下沉气流是维持雷暴向上提供充电电流的重要条件。在雷暴中,对流起电机制是一个不可忽略的重要过程。
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| 关 键 词： | 雷暴 对流起电 日地关系 |
Theoretical analysis of convection electrification process in thunderstorm |
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| Yan Muhong,Guo Changming and Liu Xinsheng.Theoretical analysis of convection electrification process in thunderstorm[J].Chinese Journal of Atmospheric Sciences,1991,15(2):120-128. |
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| Authors: | Yan Muhong Guo Changming and Liu Xinsheng |
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| Abstract: | With a one-dimensional model, we have analysed the impacts of precipitation and point discharge near the ground , convection and conductivity above the top of cloud on electrification process of thunderstorm . Results show that the convection has a great impact on electrification process of thunderstorm .The electric field greatly decreases even converse its polarity owing to precipitation and point discharge near the ground. Convection electrification process is an important electrification mechanism in thunderstorm . |
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| Keywords: | Thunderstorm Convection electrification Solar-terrestrial relation- ship |
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