摘要
利用福建省2012—2017年闪电定位资料和雷灾资料,采用熵权综合评价模型,对福建省68个县市区域雷灾进行评价。结果表明,福建省闪电密度高值区域主要集中在闽中东部,各区域年平均密度值大部分在4次·km^(-2)·a^(-1)次以下,少部分地区高达8次·km^(-2)·a^(-1)次以上;闪电发生时间集中在6—8月;闪电强度区域分布均衡,强度值大部分在30kA以下。闽中部区域雷灾次数分布总体高于其他区域,闽北最低,沿海较低;雷灾和闪电在夏季时节均为高发期,雷灾次数和闪电密度分布总体具有较好的一致性。闽中南雷灾评价等级总体高于闽北,内陆地区总体高于沿海地区。
The lightning location data and thunderstorm data of Fujian Province from 2012 to 2017 were used to evaluate the regional thunderstorms in 68 counties and cities in Fujian Province by using the entropy weight comprehensive evaluation model.The results showed that the high value areas of lightning density were mainly concentrated in the central and eastern parts of Fujian,and the annual average density of most areas was less than 4 times·km^(-2)·a^(-1),and that of a few areas was more than 8 times·km^(-2)·a^(-1).Lightning occurred mainly in June to August.The regional distribution of lightning intensity was balanced,and most of the intensity values were below 30 kA.The thunderstorm frequency in central Fujian was higher than that in other regions,Northern Fujian was the lowest and coastal areas was low.Thunderstorms and lightning were high incidence in summer,and the distribution of lightning density and the number of thunderstorms were consistent.The overall evaluation level of thunder disaster in South Central Fujian was higher than that in North Fujian,and that in inland areas was higher than that in coastal areas.
作者
陈琳
陈彩珠
胡雅君
杨秀敏
朱亚飞
Chen Lin;Chen Caizhu;Hu Yajun;Yang Xiumin;Zhu Yafei(Xiamen Meteorological Disaster Prevention Technology Center,Xiamen Fujian 361012;Xiamen Meteorological Bureau,Xiamen Fujian 361012;Xiamen Meteorological Observatory,Xiamen Fujian 361012;Xiamen Meteorological Service Center,Xiamen Fujian 361012)
出处
《气象研究与应用》
2021年第2期46-52,共7页
Journal of Meteorological Research and Application
基金
国家自然科学基金(418050028)。
关键词
闪电
雷灾
风险区划
熵权综合评价模型
lightning
thunderstorm
risk division
entropy weight comprehensive evaluation model
