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STUDY OF LOW-VISIBILITY HAZARD BASED ON TRAFFIC EXPOSURE
Author(s): 
Pages: 624-629
Year: Issue:  5
Journal: Journal of Beijing Normal University(Natural Science)

Keyword:  暴雨沙尘暴降雪交通承灾体危险性;
Abstract: 基于灾害系统理论,通过对低能见度灾害案例梳理,构建由大雾、暴雨、沙尘暴、降雪4个灾种构成的低能见度灾害致灾因子分类系统,并提出了低能见度灾害链.以灾害发生的相对频度为低能见度灾害危险性指标,编制危险性图谱,并通过GIS空间叠加分析形成低能见度灾害类型-频度图.对低能见度灾害的空间分异及组合规律分析的结果表明:大雾和暴雨高危险性区域分别覆盖了全国高速公路的24%和18%,机场的16.6%和12.9%...
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