摘要
对2012 年新疆43 个站点的闪电定位监测数据分析,发现全年云地闪主要发生在4-10 月.6-7 月出现的频次最高;正、负闪主要发生时间均分布在14-19 时.新疆云地闪中,负闪占89.4%,远多于正闪.正闪的平均强度为70.23 kA,负闪平均强度为39.88 kA.雷电流陡度主要分布在-20-20 kA/s;新疆区域内雷击大地密度按GB50057-2010 新规范估算的值大于GB50057-94规范的估算值,更远大于闪电定位仪实际监测值.
Through analyzing the lightning location monitoring data from 43 sites in Xinjiang in2012, it is found that the lightning monitoring was well consistent with the manual observation ofthunderstorm in the time distribution. Nevertheless, there was a large difference in spatialdistribution between Altay and Kashi region. The agreement between thunderstorm observed in theobservatories and lightning recorded at the lightning location monitoring stations was as high as64%, therefore, it showed the monitoring results was effective. The negative cloud -to -groundlightning account for 90%, which was far more than the positive cloud-to-ground lightning, whilethe intensity of positive cloud-to-ground lightning was greater than the negative cloud-to-groundlightning. The steepness of lightning current mainly distributed between -20 and 20 kA/？s, which iseven greater than actual monitoring value of the lightning locator.
出处
《沙漠与绿洲气象》
2014年第6期66-69,共4页
Desert and Oasis Meteorology
关键词
闪电定位
雷暴
新疆
lightning location
thunder storm
Xinjiang
作者简介
王红（1967-）,女,工程师,主要从事雷电灾害风险评估和防雷工程图纸审核工作.E-mail：wangh1207@foxmail.com
