| 一次重大雷灾事故的雷暴特征分析 |
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| 引用本文： | 石湘波,张其林,王焕邦,郑玲.一次重大雷灾事故的雷暴特征分析[J].安徽农业科学,2014,42(4):1114-1116,1158. |
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| 作者姓名： | 石湘波 张其林 王焕邦 郑玲 |
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| 作者单位： | 南京信息工程大学,江苏南京210044;浙江省宁波市气象局,浙江宁波315010;南京信息工程大学,江苏南京,210044;浙江省宁波市气象局,浙江宁波,315010 |
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| 基金项目： | 宁波市气象局科技计划项目(NBQX2012010B) |
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| 摘 要： | 通过对比分析闪电定位、多普勒雷达以及地面大气电场资料，探讨2013年9月14日重大雷灾事故的致灾过程中雷灾事发地的地闪活动和雷达回波之间以及地闪活动和地面大气电场之间的关系。结果发现，当回波顶高从8km达到13km以及垂直积分液态含水量值由33kg／rn。跃升至48kg／m2时，发生初闪；回波顶高的变化与地闪次数的变化呈正相关；回波强度在达53dBz以上后，与地闪次数的变化无明显对应关系；除峰值到达时间不一致外，垂直积分液态含水量与地闪次数变化趋势基本相同；地闪次数变化与地面大气电场场强值波动频率基本一致；同一时间不同地面大气电场仪的地面大气电场场强值波动幅度大小可以袁征该时刻发生的地闪与这些地面大气电场仪之间的距离远近。
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| 关 键 词： | 重大雷灾事故 雷暴特征 雷达回波 地闪活动 地面大气电场 |
Analysis of Thunderstorm Characteristics of Disaster-inducing Lightning |
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| Institution: | Sill Xiang-bo et al (Nanjing University of Information Science ＆ Technology, Nanjing, Jiangsu 210044) |
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| Abstract: | Through contrastive analysis of lightning data, radar and ground atmospheric electric feld data, the lightning disaster accident in Sep. 14, 2013 was explored to find the relationship among the lightning activities and radar echo and ground atmospheric electric fieht： when the echo tops break from 8 km to 13 km and the vertical integrated liquid water content values jump from the 33 kg/m2 to 48 kg/m2 , flash oc- curred ; changes of radar echo top is related to lightning frequency ; the tendency of liquid water content changes is the same as lightning fre- quency, in addition to the peak arrival time ; there was simultaneous phenomenon of lightning frequency and ground atmospheric electric field value fluctuation frequency ; different electric field equipment of ground atmospheric electric field value fluctuate at the same time, which can show the distance between this flash and these equipments. |
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| Keywords: | Disaster-inducing lightning Thunderstorm characteristics Radar echo Ground flashes Ground atmospheric electric field |
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