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Large-scale landslides often occur in the same place as previous landslides. Determining the location of potential future landslides is crucial and helpful for reducing landslide risk. In this paper, we compared the landslide topography distribution map and the 2011 landslide disasters in the Kii Peninsula to determine the overlap of new landslides in 2011 and past landslides. We found that over 60% of large-scale landslides took place in areas where previous landslides had been identified in the landslide topography distribution map. Following this finding, we created the landslide distribution maps for four regions in Sri Lanka from AW3D data to assess the risk of large-scale landslides.

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How to Detect the Previous Large-Scale Landslide: Source of Future Landslides by Interpretation of Ground Topography from Digital Maps

  • 章节

  • 出版模式：

    开放获取

  • 发表日期：

    2025年

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  • Toyohiko Miyagi,
  • Doan Huy Loi

摘要

Large-scale landslides often occur in the same place as previous landslides. Determining the location of potential future landslides is crucial and helpful for reducing landslide risk. In this paper, we compared the landslide topography distribution map and the 2011 landslide disasters in the Kii Peninsula to determine the overlap of new landslides in 2011 and past landslides. We found that over 60% of large-scale landslides took place in areas where previous landslides had been identified in the landslide topography distribution map. Following this finding, we created the landslide distribution maps for four regions in Sri Lanka from AW3D data to assess the risk of large-scale landslides.