云南怒江州地质灾害时空变化特征及其与降水的关系  

Temporal and Spatial Variation Characteristics of Geological Disasters and Its Relationship with Precipitation in Nujiang Prefecture of Yunnan

作　　者：肖瑞迪 范立张[1] 张明达[1] 杨晓鹏[1] 金燕[1] XIAO Ruidi;FAN Lizhang;ZHANG Mingda;YANG Xiaopeng;JIN Yan(Yunnan Provincial Climate Centre,Kunming 650034,China)

机构地区：[1]云南省气候中心,昆明650034

出　　处：《高原山地气象研究》2024年第2期127-132,共6页Plateau and Mountain Meteorology Research

基　　金：云南省基础研究专项-重大项目(202101BC070002)。

摘　　要：利用2008—2022年地质灾害和降水数据,分析了云南怒江州地质灾害的时空分布特征,并揭示了地质灾害与降水的关系。结果表明:从时间变化看,怒江州地质灾害2010年发生数量最多,2016年次之,且地质灾害多发在春夏季,高峰期集中在4月和7月。从空间分布看,怒江州地质灾害表现出北多南少的显著特征。主要包括泥石流、滑坡和崩塌,其中泥石流最多,且不同地质灾害分布存在较大的时空差异。怒江州地质灾害与该地区降水的时空变化具有很好的一致性,地质灾害发生期间以小雨、大雨和暴雨量级为主,进一步证实了降水是引发怒江州地质灾害的主要气象因素。Based on the geological disaster and precipitation data from 2008 to 2022,the temporal and spatial distribution characteristics of geological disasters in Nujiang Prefecture of Yunnan are explored,and the relationship between geological disasters and precipitation are revealed.The results show that the geological disasters were of obviously the temporal and spatial variation characteristics.From the perspective of time change,the number of geological disasters was the largest in 2010,followed by 2016.The geological disasters mainly occurred in spring and summer,and the peak period appeared in April and July.The spatial distribution characteristics of geological disasters in Nujiang Prefecture were obviously more in the north and less in the south.The main geological disasters in Nujiang Prefecture were the debris flow,landslide and collapse,and the debris flow was the most,and there were large spatial and temporal differences in the distribution of different geological disasters.The temporal and spatial distribution of geological disasters coincided with those of precipitation.During the occurrence of geological disasters,the rainfall levels were mainly light rain,heavy rain and torrential rain,which indicated that precipitation was the main meteorological factor causing geological disasters.

关 键 词：地质灾害 时空变化 降水 怒江州 

分 类 号：P694[天文地球—地质学]