摘要
为了掌握雷电发生规律、防御和减轻雷电灾害,以菏泽地区2007—2013年地闪资料为基础,详细分析其时空分布特征。结果表明,菏泽地区地闪主要受下垫面影响,空间分布差异明显,水体附近地闪密度较大。地闪时分布呈多峰状,2个最大的峰值出现在5时和11时左右。负地闪的雷电流强度分布和总地闪的吻合度很好,地闪密度和强电流分布高值区一致,分布在东明县南部和曹县西北部。
The paper aims to understand the occurrence law of lightning, and the mitigation of lightningdisasters. Based on the cloud-to-ground lightning data in Heze during 2007-2013, the authors analyzed thespatio-temporal distribution characteristics of cloud-to-ground lightning. The results showed that： cloud-to-ground lightning in Heze was mainly affected by underlying surface and the spatial distribution wassignificantly different, lightning had a greater density near water; the moment distribution of cloud-to-groundlightning was multimodal, two of the largest peak appeared at around 5 am and 11 am; the lightning currentintensity distribution of negative cloud-to-ground lightning matched the total flash well; the density of cloud-to-ground lightning and high values of high current density distribution were consistent, which was located insouthern Dongming and northwestern Caoxian.
出处
《中国农学通报》
2016年第26期157-162,共6页
Chinese Agricultural Science Bulletin
关键词
地闪
分布
特征
cloud-to-ground lightning
distribution
characteristics
