Keywords: 
• 雷电 /
• 灾害 /
• 分布特征 /
• 电流幅值

Abstract: Lightning and lightning disaster around Dongguan have been analyzed according to the data of lightning location within five years and lightning disaster within fourteen years .The temporal ,spatial dis‐tribution and the current intensity characteristics of lightning and lightning disaster have been summarized under this analysis .The results show that the majority of lightning are negative account for 97 .6% with a mean intensity of 27 .9 kA ,which is slightly higher than that of positive lightning with a mean intensity of 25 .5 kA .The lighting disaster occurs 30 times on average with personnel casualties ,damages equipment (w hich is accounted for 80% )and direct economic loss of nearly one million every year .T he monthly chan‐ges of lightning and lightning disaster are characterized by bimodal distribution ,peak value appeared in June and August .Lightning frequency and lightning disaster mainly occurs in rainy season but in opposite direction .The diurnal variations of lightning and lightning disaster showed a similar trend and most of them occurred in the afternoon .The ratio of lightning frequency is less than lightning disaster from 10 :00 to 17 :00 ,other times is opposite .The spatial distribution of lightning and lightning disaster is closely re‐lated to the environment and the properties of underlying surface .Watery region and coastal region has more lightning activities than lightning disaster ,the opposite of mountain region .Lightning activities and lightning disaster have the same trend in city region ,field region and hills region .In addition ,according to the distributions of current intensity of lightning and accumulative probability of lightning current ,we got the concentrating range of current intensity and variations of ratio .