Based on the thunderstorm day data from 1978 to 2013 and lightning location data from 2006 to 2021 in Jiangxi Prov-ince,a 90"×90"latitude-longitude grid was selected and three methods were used in ArcGIS software for spatial analysis of lightning-prone region.The spatiotemporal characteristics based on a single indicator of thunderstorm day and lightning density were statistically analyzed.On this basis,a lightning index was designed,using the above two types of data as technical indica-tors,and a division model was established.The fixed-value classification method was used to divide the areas.And then,light-ning-prone area maps of Jiangxi Province were generated under different weight coefficients.Further comparison and validation were conducted using the lightning current amplitude division method.The results showed that the weight coefficient a=0.3 was reliable using the lightning index division method in Jiangxi Province.This approach improved the issue of simplistic distri-bution of lightning-prone region and low detection efficiency at the boundaries that arose from using a single indicator.
关键词
雷电易发区域/雷击指数/定值划分/权重系数/雷电流幅值
Key words
lightning-prone region division/lightning index/fixed-value classification/weight coefficient/amplitude of light-ning current
维普
万方数据