汶川大地震诱发滑坡的震中距  

The landslide epicenter distance triggered by the Wenchuan earthquake

作　　者：乔建平[1,2] 黄栋[1,2] 杨宗佶[1,2] 孟华君[1,2,3] 

机构地区：[1]中国科学院地表过程与山地灾害重点实验室,四川成都610041 [2]中国科学院水利部成都山地灾害与环境研究所,四川成都610041 [3]中国科学院研究生院,四川成都610041

出　　处：《中国地质灾害与防治学报》2013年第2期1-7,共7页The Chinese Journal of Geological Hazard and Control

基　　金："十二五"科技支撑计划项目(2011BAK12B01);973项目(2010CB731504)资助;科技部国际合作项目(2013DFA21720)

摘　　要：本文在地震滑坡规模(体积)类型5级划分法的基础上,采用数学方法对汶川地震灾区的2个宏观震中(映秀、北川)烈度I0≥XI极震区(10个县市)的地震滑坡震中距进行了讨论。其中地震滑坡随震中距分布基本符合正弦、高斯和指数衰减规律。极震区最大滑坡震中距可达120km,最小滑坡震中距可达0.25km。结果表明,地震诱发滑坡的规模(体积)和分布范围都与震中距具有相关性。Based on the method of seismic landslide scale(volume) type which is divided into five levels,By the mathematical method discuss the landslide epicenter distance of two macroscopic epicenter(Yingxiu,Beichuan) intensity I0≥XI extremely earthquake region(10 counties) in Wenchuan earthquake area.The distribution of earthquake slope and the landslide epicenter distance corresponds with sine,Gaussian and exponential decay laws.The maximum earthquake landslide epicenter distance is 120km,and the minimum landslide epicenter distance is nearly 0.25km.The result shows that the landslide scale and distribution scope induced by the earthquake have relationship with the landslide epicenter distance.

关 键 词：大地震 滑坡 滑坡规模 震中距 

分 类 号：P642.22[天文地球—工程地质学]