江苏省雷暴和雷击事故对比及其雷击率分布特性

基于江苏省1980—2010年共31a逐日雷暴和雷击伤亡人数资料的统计和分析得到:1)江苏省雷暴过程和雷击事故均呈上升趋势,但后者较前者上升趋势更为明显;2)江苏省雷击事故过程的雷击率呈单峰型特性,气候倾向率为正值,呈上升趋势;3)江苏省历年雷暴和雷击伤亡总人数都呈单峰型特性,峰值出现在7月,趋势线基本平行,相关系数(0.627 885)较高,上升趋势较为一致,雷击死亡人数波峰出现在7月,而雷击受伤人数的波峰却出现在8月;4)雷击伤亡人数的雷击率呈双峰型特性,其峰值分别出现在5月和7月,峰谷值相差很大,各月波动明显;5)雷击伤亡总人数、死亡人数和受伤人数的各雷击率地区分布不同,雷击伤亡人数的雷击率最高值区出现在南通地区,死亡人数的雷击率最高值区在南通和淮安地区,而受伤人数雷击率最高的区域在徐州地区,其地域分布差异较大,非均一性特征明显.

Comparison between lightning events and their deprived accidents and pattern of lightning-stroke rate distribution in Jiangsu Province

The statistical characteristics of the daily lightning events and their deprived injury and death amount from 1980 to 2010 in Jiangsu province were analyzed in this paper. The results were displayed as follows：1） The lightning events are increasing in these years as well as their deprived accidents. The lightning-stroke rate of light-ning accidents shows a single peak pattern with positive and ascent climatic tendency.2） The lightning events and deprived accidents in Jiangsu province shows a single peak in July with a paralleling trend line,a high relative coef-ficient（0-627 885） and an unanimous ascent trend.The lightning-hit death toll reaches its peak in July while the injuries peak in August.The lightning-stroke rate of casualties peaks in May and July with considerable peak valley difference and month-to-month disparity.3） There was obvious regional difference of the lightning-hit casualties in Jiangsu province.Nantong and Huaian has the highest lightning-stroke rates of the death toll while Xuzhou has the highest lightning-stroke rate of the injuries.