摘要
利用2007—2016年重庆市闪电监测资料及该区域数字高程模型,使用GIS空间分析、数理统计等方法,研究了雷电灾害两种主要致灾因子(闪电密度、强度)与3类地形因素(海拔高度、坡度、坡向)之间的关系。结果表明海拔高度、坡向对地闪密度具有影响,坡度与地闪密度呈负相关关系;不同坡向分类之间的地闪强度分布具有明显差异,海拔高度、坡度与地闪强度不相关。
By use of Chongqing lightning location data from 2007 to 2016 and the digital elevation model of this region,applying the GIS spatial analysis and mathematical and statistical methods,an analysis is made of the influence of topography on main lightning hazard factors.The results show that the altitude and slope direction have an impact on the Cloud-to-Ground(CG)flash density,and the slope has a negative correlation with the CG flash density.The distribution of the ground flash intensity between different slope directions has obvious differences,and the altitude,slope and CG flash intensity are not correlated.
作者
赵生昊
覃彬全
刘青松
ZHAO Shenghao;QIN Binquan;LIU Qingsong(Chongqing Center of Meteorology Safety Technology,Chongqing 401147)
出处
《气象科技》
2020年第1期127-131,共5页
Meteorological Science and Technology
基金
重庆市气象部门智慧气象技术创新团队项目(ZHCXTD-201923)资助.
关键词
雷电灾害
地形
致灾因子
重庆
lightning hazard
topography
hazard factor
Chongqing
