洛阳地区雷暴活动规律和雷灾分析

Thunderstorm Activity Regularity and Analysis of Lightning Disaster in Luoyang Region

利用洛阳市及9县10个观测站1966-2005年的雷暴观测资料,统计分析了洛阳地区雷暴活动时空分布特征,结果显示:洛阳地区雷暴时空分布很不均匀,栾川、嵩县、孟津偏多,宜阳、新安、汝阳偏少,南北多中部少;20世纪60年代中期到70年代雷暴日数偏多,80年代至今雷暴日数偏少,但从80年代开始,洛阳地区雷暴日数有缓慢上升的趋势,年际变化幅度大,季节性特点非常明显,集中出现在4-9月,而夏季雷暴日数接近全年的80%。洛阳地区雷击人员伤亡事件主要发生在农村,造成的财产损失主要在市区,近年来雷击次数及所造成的损失呈上升趋势。

This article statistically analyzes the temporal and spatial distribution characteristic of Luoyang thunderstorm activity based on 10 stations of Luoyang and Luoyang 9 counties thunderstorm ob- servational data from 1966 to 2005. The results show Luoyang thunderstorm distribution is very uneven： Luanchuan, Songxian and Mengjin distribution is plentiful; Yiyang, Xin＇ an and Ruyang distribution is little; the south and north is more than the central section. The thunderstorm days from the middle of the 1960s to the 1970s are more than from 1980s to now. The thunderstorm days are slow upward trend since 1980s, and the interannual change and seasonal characteristic are extremely obvious, and meanly con- centrate on April to September, accounting for 80 percent of the whole year. The lightning disaster occurs in Luoyang rural region and property loss is mainly in the city. The number of lightning strikes and loss is upward trend in recent years.