云南楚雄特大滑坡泥石流气象成因  

Analysis of Meteorological Causes of an Exceptional Landslide and Debris Flow Event in Chuxiong

作　　者：余峙丹 张辉 郭荣芬[2] 

机构地区：[1]云南省楚雄州气象局,楚雄675000 [2]云南省气象台,昆明650034

出　　处：《气象科技》2010年第1期136-140,共5页Meteorological Science and Technology

摘　　要：2008年11月2日连续性的大雨、暴雨引发了云南楚雄州特大地质灾害,造成巨大生命财产损失。文章利用高空探测资料、测站雨量、加密自动站雨量、卫星云图等资料分析了诱发楚雄州"11.02"特大滑坡泥石流灾害的气象成因。结果表明:除了地质地貌自然原因外,楚雄州出现历史罕见秋季连续强降水天气过程是造成这次灾害的前期气候背景;中尺度辐合天气系统、充沛水汽输送及辐合、高低空急流、中低层切变导致的11月1日20:00至2日20:00楚雄州暴雨是引发"11.02"滑坡泥石流灾害的直接气象原因。A continuous severe rain occurred on 2 November 2008 in Chuxiong,Yunnan Province,which initiated an exceptional big geological disaster and created a huge loss of life and property. By means of the data of MICAPS 3,conventional meteorological rainfall,intensive unattended station rainfall,and satellite cloud pictures,the meteorological causes of the event are analyzed.The results indicate that besides natural causes such as geological condition and landform,the historically rarely seen severe rainfall is a major trigger.The direct factors of the event include the mesoscale convergence weather system,abundant water-vapor transport and convergence,upper-level and lower-level jets,and lower-mid level shear.

关 键 词：连续强降水 滑坡 泥石流 中β尺度强对流云团 中尺度雨团 

分 类 号：P642.22[天文地球—工程地质学]