Effect on stratum gradient frequency distribution of landslides in the Three Gorges Area of northeast Chongqing

  • Fan Xiaoyi
  • Qiao Jianping
Mountain Hazards


The landslide data were calculated in the Three Gorges Area of northeast Chongqing. The results showed that landslide frequency distributions of gradients accorded with the Weibull probability density distribution function. The landslide hazard ratios of gradients were acquired by Weibull accumulation probability distribution function in the different geological units. There was discord between landslide hazard ratio of different geological units and variance of landslide gradient. But they were approximate homology in the strate of Jurassic. The results indicate that the Weibull distribution can quantitatively evaluate the landslide hazard rations of gradients of the different strata in the Three Gorges Area.

Key words

gradient stratum Weibull distribution landslide 

CLC number

P 642. 22 


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Copyright information

© Springer 2006

Authors and Affiliations

  1. 1.Institute of Mountain Hazard and EnvironmentChinese Academy of SciencesChengdu, SichuanChina
  2. 2.Graduate University of Chinese Academy of SciencesBeijingChina

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