【作者】 朱俊儒； 张德宏； 王苏； 吴越； 倪玉红；

【Author】 Zhu Junru;Zhang Dehong;Wang Su;Wu Yue;Ni Yuhong;Huai’an Meteorological Bureau;

【机构】 淮安市气象局；

【摘要】 利用淮安地区2011-2014年的闪电资料,分析了该地区的正负地闪活动、雷电流强度、闪电密度的时空分布特征。结果表明:淮安地区正负雷电活动具有明显季节变化与日变化,正负地闪的月变化均具有单峰和单谷的特征,而正负地闪的日变化均具有双峰和双谷的特征。淮安地区每月发生的雷电流平均强度与每个月发生的雷电频数呈负相关;另外,发生在60KA以下地闪占总闪的91.52%,雷电流高值区主要分布在郊区,市区发生强雷电几率较小。淮安地区雷击大地密度的高值区具有明显的随机性,从平均雷击大地密度分布图可以看出,雷电活动的活跃区主要分布在盱眙县、金湖县及淮安区。更多还原

【Abstract】 Based on the lightning data from 2011 to 2014 in Huai’an, the temporal and spatial distribution of positive negative ground flashes activities, lightning intensity, lightning density were analyzed. Result showed that positive and negative lightning activity have obvious seasonal variation and diurnal variation in Huai’an. The month changes of positive and negative flash with a single peak and single valley characteristic, Then the diurnal variation of both positive and negative ground lightning with double peaks and valleys feature. The average lightning current intensity occurred at each month is negatively related to the frequency of occurrence of lightning. In addition, the flash intensity below 60 kA is 91.52%,the high value area of lightning current is mainly located in the suburbs, the urban areas with lower risk. The high value area of lightning density district has obvious randomness in Huai’an. From the average lightning density distribution can be seen, the lightning activity areas were mainly distributed in Xuyi County, Jinhu county and Huai’an district.更多还原