滁州市雷电易发区域划分研究

Study on the Division of Lightning Prone Areas in Chuzhou City

基于安徽省2010-2016年7个闪电定位系统监测站ADTD闪电资料,在进行完整性、频率分布及空间分布等质量分析后,采用界限值、一致性检验等方法对其进行质量控制,再对质量控制后的闪电资料进行栅格化处理,以雷电流幅值主要指标采用百分位数法将雷电流强度划分为一、二、三级,并形成3个等级的闪电格点资料库。采用GIS绘图技术,绘制滁州6县1市不同强度等级的雷电易发区空间分布图,通过对比分析雷暴日数、海拔高度、地形变化、河网、土壤电阻率等与易发区域划分结果的相关性,对其进行初步订正检验。

Based on the ADTD lightning data of seven lightning location system monitoring stations in Anhui Province from 2010 to 2016,after quality analysis such as integrity analysis,frequency distribution and spatial distribution,quality control is carried out by using boundary value,consistency test and other methods,and then the lightning data after quality control is rasterized.The lightning current intensity is divided into one,two and three levels by using percentile method based on the main index of lightning current amplitude,and a lightning grid database of three levels is formed.Using GIS mapping technology,the spatial distribution map of lightning-prone areas with different intensity levels in six counties and one city of Chuzhou was drawn.The correlation between thunderstorm days,altitude,terrain changes,river network,soil resistivity and the results of the division of lightning-prone areas was analyzed and preliminarily revised.Key Words:Lightning Current Intensity in Lightning-prone Areas Lightning Location Thunderstorm Days Chuzhou.