| 本文已被：浏览 553次 下载 110次 |
码上扫一扫！ |
| 中山市雷电伤人事件的成因分析 |
|
罗志勇1,2, 甄小琼3, 殷启元2,4, 黄源1, 吴经尊1, 林世祺1, 许锦延3
|
|
1. 中山市气象局，广东 中山 528400;2. 中国气象局雷电重点开放实验室，北京 100081;3. 成都信息工程大学，四川 成都 610225;4. 广东省气候中心，广东 广州 510641
|
|
| 摘要: |
| 根据广东省中山市多波段雷达监测数据和广东省闪电定位系统资料，结合模型计算，对2024年4月5日中山市狮头山一次雷击双树致人“假死”事件进行调查分析发现，这次事件是在降雨云团南部外围边沿地带发生的，事故发生时，事故地点有短时阵雨，闪电首先击中两颗树木，然后通过旁络闪击击中受害者致“假死”，“假死”者身边3名同行人员却没有受伤。结合目击者的描述，造成此事件的闪电具有两个接地点，电流强度为-20kA。“假死”者离树木距离仅0.2m，经计算有2.312kA直接闪击到受害者身上，同时还承受了348.04kV跨步电压伤害；目击者距离树木1.1m，承受跨步电压值约为22.6kV，小于其对应体重可承受跨步电压值43.96kV，故无受伤，但有手指麻痹的感觉。同行小孩距离树木2~3m，仅承受3.61~7.56kV的跨步电压，故没有影响。 |
| 关键词: 雷击灾害 “假死” 雷暴天气 旁络闪击 跨步电压 |
| DOI：10.16032/j.issn.1004-4965.2025.041 |
| 分类号: |
| 基金项目: |
|
| Analysis of the Causes of a Lightning Injury Incident in Zhongshan City |
|
LUO Zhiyong1,2, ZHEN Xiaoqiong3, YIN Qiyuan2,4, HUANG Yuan1, WU Jingzun1, LIN Shiqi1, XU Jinyan3
|
|
1. Zhongshan Meteorological Bureau, Zhongshan, Guangdong 528400, China;2. Key Laboratory of Lightning China Meteorological Administration, Beijing 100081, China;3. Chengdu University of Information Technology, Chengdu 610225, China;4. Guangdong Climate Center, Guangzhou 510641, China
|
| Abstract: |
| Based on multiband radar monitoring data from Zhongshan City and Guangdong lightning positioning system data, combining model calculations, we investigated a lightning strike incident on Shitou Mountain in Zhongshan City on April 5, 2024. This event, which caused transient cardiorespiratory arrest and suspended animation in one victim, occurred at the southern periphery of a convective cloud cluster during brief showers. The lightning channel featured dual-ground termination points (peak current: -20 kA) that preferentially struck two adjacent trees before side-flashing to a victim located only 0.2 m away. Calculations indicate the victim experienced both a direct strike (2.312 kA) and step voltage (348.04 kV). A witness standing 1.1 m from the tree was exposed to about 22.6 kV step voltage (below the 43.96 kV safety threshold), reporting only finger numbness. The accompanying children at 2-3 m distance experienced 3.61-7.56 kV step voltage with no effects. |
| Key words: lightning strike suspended animation thunderstorm weather side flash step voltage |