浙江省雷电易发区划及灾害防范

Lightning Prone Zoning and Disaster Prevention in Zhejiang Province

基于2007—2019年浙江省ADTD地闪监测资料,采用固定网格法,选取地闪密度和落雷日数作为雷电易发指标,依据规范要求,利用百分位法和重分类技术进行雷电易发等级划分,得到该地区雷电易发区划。浙江省雷电易发区划分为极强易发区、强易发区、中易发区、一般易发区4个等级,全省大部分地区为中易发区和强易发区,宁波、台州、温州和衢州大部地区,以及杭州南部、杭州―绍兴交界、金华中南部和丽水北部等地雷电易发等级较高。针对不同雷电易发等级及其特点,从规范防雷装置安装检测、完善雷电预警信号传播机制、提升公众防雷意识水平、推进雷电灾害防御专业服务等方面作出了相应的灾害防范分析,对于进一步减少雷电灾害发生,提升社会雷电灾害防治能力具有实际指导意义。

Based on the ADTD lightning location data of Zhejiang Province from 2007 to 2019, using the fixed grid method, the CG lightning density and thunder days are selected as the lightning prone index. According to the standard requirements, the percentile method and re classification technology are used to classify the lightning prone level, and the lightning prone zoning of this area is obtained. The lightning prone areas in Zhejiang Province are divided into four levels: extremely strong prone area, strong prone area, medium prone area and general prone area. Most areas in Zhejiang Province are medium prone area and strong prone area. Most areas in Ningbo, Taizhou, Wenzhou and Quzhou, as well as southern Hangzhou, Hangzhou Shaoxing junction, central and southern Jinhua and northern Lishui have higher lightning prone level. According to different lightning prone levels and their characteristics, the corresponding disaster prevention analysis is made from the aspects of standardizing the installation and detection of lightning protection devices, improving the lightning early warning signal transmission mechanism, improving the public lightning protection awareness level and promoting the professional service of lightning disaster prevention, which has practical guiding significance for further reducing the occurrence of lightning disasters and improving the social lightning disaster prevention ability.