摘要
利用江西省雷电监测系统获取的2003-2018年赣州地区范围内的地闪定位资料,对闪电的基本特性、日变化、月变化以及闪电密度的分布等方面进行了分析。结果表明,闪电强度平均值为8.27 k A;负地闪数占总闪电数的95.4%,平均闪电强度为-9.94 k A;正负闪电比为4.6%,正闪平均强度为26.38 kA;闪电的月变化表现为单峰型,主要出现在4-9月,其中6-8月最为频繁;一天中闪电活跃期为13:00-19:00;闪电密度分布由北往南依次减少。
The basic characteristics,daily variation, monthly variation of lightning and distribution of lightning density were analyzed by using the geophone localization data from 2003 to 2018 in the Jiangxi Province lightning monitoring system. The results showed that the average lightning intensity was 8.27 kA,the negative ground flash accounted for 95.4% of the total lightning,the average lightning intensity was -9.94 kA;the ratio between positive and negative lightning was 4.6%,and the average flashing intensity was 26.38 kA;The lightning monthly variation was characterized by a unimodal type,mainly occurring during April to September ,and most frequently during June to August;the lightning active period was 13:00-19:00 in one day,and the lightning density distribution decreased from north to south.
作者
代冬梅
肖银辰
DAI Dong-mei;XIAO Yin-chen(Longnan County Meteorological Bureau of Jiangxi Province,Longnan Jiangxi 341700;Quannan County Meteorological Bureau)
出处
《现代农业科技》
2019年第17期191-192,194,共3页
Modern Agricultural Science and Technology
