【摘要】 利用2007—2012年的江苏省闪电定位仪资料,结合1961—2012年的淮安地区6个县(区)的雷暴日人工观测资料,分析了该地区地闪的时空分布特征。结果表明,地闪次数与雷电活动的强弱、当日发生的频次有着密切的关系。地闪的季节变化呈单峰型分布,极值出现在7月或者8月。绝大多数地闪是负闪击,占95.3%。地闪密度有南多北少的特征,重落雷区和强落雷区集中在洪泽湖的南部、盱眙和金湖地区。更多还原

【Abstract】 By studying the cloud-to-ground(CG) data from 2007 to 2012 and the observational data of thunderstorm of six stations in Huai’an during 1961 to 2012, the climatic characteristics of the lightning are analyzed. The results show that the numbers of lightning in one day have a close relationship with their activity intensity and frequency on the same day. Seasonal variations of lightning are unimodal distribution and the extreme value always appears in July or August. The lightning activities occurred more frequently in southern regions than in northern regions. Lightning protection should be an important task particularly in regions surrounding the south of Hongze Lake, Xuyi and Jinhu.更多还原