Optimization Method for Lightning-Prone Region Division in Jiangxi Province Based on Lightning Index
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.
lightning-prone region divisionlightning indexfixed-value classificationweight coefficientamplitude of light-ning current
万方数据
维普
