四川泸州长江河谷地带雷电危险性评价  

Evaluation of Lightning Hazard in the Yangtze River Valley of Luzhou, Sichuan

作　　者：徐金霞[1,2] 郭海燕 代涛[3] 徐沅鑫 卿清涛 邓国卫[1] 钟燕川[1] XU Jinxia;GUO Haiyan;DAI Tao;XU Yuanxin;QING Qingtao;DENG Guowei;ZHONG Yanchuan(Climate Center of Sichuan Province,Chengdu 610072,China;Institute of Plateau Meteorology,China Meteorological Administration,Chengdu/Heavy Rain and Drought-Flood Disasters in Plateau and Basin Key Laboratory of Sichuan Province,Chengdu 6l0072,China;Luzhou Municipal Meteorological Service,Luzhou Sichuan 646000,China)

机构地区：[1]四川省气候中心,成都610072 [2]中国气象局成都高原气象研究所/高原与盆地暴雨旱涝灾害四川省重点实验室,成都610072 [3]泸州市气象局,四川泸州646000

出　　处：《西南大学学报（自然科学版）》2023年第2期160-169,共10页Journal of Southwest University(Natural Science Edition)

基　　金：国家自然科学基金青年科学基金项目(42205195);中国气象局创新发展专项(CXFZ2021J058);中国气象局西南区域气象中心川藏铁路气象服务技术创新团队项目(XNQYCXTD202201);高原与盆地暴雨旱涝灾害四川省重点实验室科技发展基金青年专项(SCQXKJQN2020054)。

摘　　要：以四川省泸州市2006-2020年闪电定位资料以及气象观测站年雷暴日数作为基础数据,采用数理统计方法以及ArcGIS空间分析技术对泸州地区长江河谷地带雷电活动规律及其危险性进行了分析评价.结果显示,泸州地区近年来雷电活动呈逐渐减少的变化趋势,2000年以前处于正距平占优势的多雷暴阶段,2000年以后则是负距平占优势的少雷暴阶段.季节、月分布特征均呈明显的“单峰”特性,其中夏季雷电发生次数最多,春秋季次之,冬季基本无雷暴发生;日内雷电主要发生在午后15时至次日02时,峰值出现在深夜23时.危险评价结果表明,泸州地区雷电高危险区主要集中在叙永南部、古蔺北部以及合江西部地区,低危险区域位于北部泸县、龙马潭等区域,南部地区危险性明显高于北部地区.Based on the data of 2006 to 2020 daily thunderstorm and the lightning location in Luzhou City, Sichuan Province, the temporal and spatial distribution of lightning activity and lightning hazard in Luzhou was analyzed using ArcGIS. The results show that the lightning activity in Luzhou City has been gradually decreasing in recent years. Before 2000, it was in the phase of more thunderstorms where positive anomalies were dominant. After 2000, it was the phase of less thunderstorms where negative anomalies were dominant. The seasonal and monthly distribution show the obvious “single peak” characteristics. The thunderstorm occurred more frequently in summer, less in spring and autumn, and there was basically no thunderstorm in winter. The intraday thunderstorm mainly occurred in the afternoon of 5∶00 to evening of 02∶00, and the peak appeared at 23∶00. The assessment results show that the high risk areas were mainly located in southern Xuyong, northern Gulin and western Hejiang. The low risk areas were located in northern Luxian, Longmatan and Jiangyang. And the risk in southern areas of those regions was significantly higher than that in the northern region.

关 键 词：闪电定位 危险性 地闪密度 雷电灾害 

分 类 号：X43[环境科学与工程—灾害防治]