甘肃雷暴云电荷分布和闪电特征的个体差异  

Disparity of Charge Structure and Lightning Characteristics in Different Thunderclouds in Gansu Area

作　　者：李荣[1] 王才伟[2] 

机构地区：[1]石油大学应用物理系,东营257061 [2]中国科学院寒区旱区环境与工程研究所,兰州730000

出　　处：《高电压技术》2001年第2期74-75,共2页High Voltage Engineering

基　　金：国家自然科学基金资助项目 !(49775 2 5 4和 492 35 0 90 )

摘　　要：分析观测的资料表明 ,虽然甘肃地区雷暴云的电结构普遍呈三级结构 ,云底部存在一分布相当广的正电荷层 ,但不同雷暴中的闪电类型及闪电行为特征往往有较大差异。有些雷暴没有负地闪 ,而有些雷暴过程中却有负地闪 ;有些雷暴中的负地闪全为 C型 ,有些则既有 C型 ,又有 P型。不同雷暴中闪电情况的不同 。Data analyses shows that the charge distribution of thunderclouds in the Gansu area presents an electric tripole with an additional lower positive charge layer near the cloud base, which is horizontally extensive with quite a large amount of electric charge. However, the lightning types and the characteristics of lightning behavior in one thundercloud may differ from those in another. There is no negative cloud to ground flashes (NCGF) in some thunderstorms, but some do have NCGF. Furthermore, among the latter, some have only P type NCGF, while others have both C type and P type NCGF. The disparty mentioned above are related to the differences in charge structure between individual thunderclouds in Gansu area.

关 键 词：雷暴云 电荷分布 闪电特征 云闪 地闪 

分 类 号：TM863[电气工程—高电压与绝缘技术]