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利用１９９７年设在陇东地区的闪电定位系统及双线偏振雷达资料，分析研究了该地区冰雹云系发展演变及其地闪的关系。结果表明：在降雹前３０ｍｉｎ左右时，每５ｍｉｎ地闪频数陡然上升，降雹前１８ｍｉｎ，每５ｍｉｎ地闪频数平均上升为３．５，每５ｍｉｎ地闪频数的最大值一般是出现在开始降雹前１６ｍｉｎ到前６ｍｉｎ之间，在冰雹云演变的发展、成熟和消散三个阶段中负地闪数远大于正地闪数，并且起着主导作用。冰雹云中心的冰相粒子含量的变化与地闪数变化相对应，间接表明冰雹云起电机制主要以非感应起电机制为主。
Based on the lightning location system and two-polarization radar data set in the Longdong area in 1997, the relationship between the development and evolution of hail cloud system and the ground flash in the area was analyzed. The results show that the number of flashover increases sharply every 5min before hailstone reaches about 30min, the number of flashover increases every 3.5min 18min before hail, and the maximum number of flashing frequency every 5min is generally 16min before the hail onset In the first 6 minutes, the number of negative ground flash is far greater than the number of positive flash in the three phases of development, maturity and dissipation of hail cloud evolution, and plays a leading role. The change of the ice particle size in the hail cloud center corresponds to the change of the ground flashover number, which indirectly indicates that the mechanism of hail cloud electromagnetism is dominated by non-induced electromotive mechanism.