Acta Scientiarum Naturalium Universitatis Pekinensis

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Triggering Factors Susceptibility of Earthquake-Induced Landslides in 1976 Longling Earthquake

CHEN Xiaoli1, RAN Hongliu1, QI Shengwen2   

  1. 1. Institute of Geology, China Earthquake Administration, Beijing 100029;2. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029;
  • Received:2008-01-07 Online:2009-01-20 Published:2009-01-20



  1. 1.中国地震局地质研究所,北京100029;2.中国科学院地质与地球物理研究所,北京100029;

Abstract: Based on GIS, the susceptibility of earthquake-induced landslide triggering factors of Longling Earthquake in 1976 is analyzed by means of the slope certainty factors (CF). The factors contributing the landslide occurrence include lithology, faults,earthquake intensity, epicenter distance, slope angle,slope aspect, elevation,river etc.The results show that different factor contribution to landslide is due to its value, and the most numerical intervals of each factor which are inclined to landslides are determined. This work is the basement for further study of earthquake-induced landslide susceptibility analysis.

Key words: earthquake-induced landslide, certainty factor (CF), GIS, susceptibility analysis, spatial analysis

摘要: 基于前人的研究和龙陵地震滑坡的调查资料,选取了地层岩性、断裂、地震烈度、震中距、地形坡度、坡向、高程、水系等8个因子作为1976年龙陵地震诱发滑坡的影响因子。利用GIS强大的空间分析能力,结合滑坡确定性系数(CF)的方法,对1976年龙陵地震诱发滑坡的诸影响因子进行敏感性分析,确定了该区域内各因子最利于地震滑坡发育的数值区间,为进一步区域地震滑坡稳定性评价奠定基础。

关键词: 地震滑坡, 确定性系数(CF), GIS, 敏感性分析, 空间分析

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