Extracting and Analyzing Geometric Features of Landslides Induced by Wenchuan Earthquake Based on Remote Sensing
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    Abstract:

    In this study,we selected 107 landslides in the earthquake-stricken area for investigation. The geometric features of the landslides were extracted based on remote sensing,DEM(digital elevation model) data and field survey.The area of the landslides was obtained by interpreting individual landslides from remote sensing images. The apparent friction angles,travel distances,and the heights of the landslide bodies were extracted from remote sensing images combined with DEM. The total volumes of the landslides were gained by field survey. Furthermore,we linked the total volumes and travel distance of the landslides with the other geometric features factors,such as the areas,apparent friction angles and heights. The results indicate that the total volumes had significant relationship with landslide areas and landslide heights,which could be described well by a power equation and a quadric polynomial equation,respectively,while the travel distances correlated significantly linearly with the landslide heights. However,the other relationship was not statistically significant.

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范建容,李秀珍,张怀珍,郭芬芬,郭祥.汶川地震灾区崩塌滑坡体几何特征信息遥感定量提取与分析[J].水土保持通报英文版,2012,(2):118-121

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History
  • Received:May 26,2011
  • Revised:August 06,2011
  • Adopted:
  • Online: November 25,2014
  • Published: