Relationship between Landslide Distribution and Geological Units
Relationship between Landslide Distribution and Geological Units
复制标题
滑坡分布与地质单元的关系
DOI：
10.3313/jls.52.271
复制
发表时间：
2015
期刊：
影响因子：
6.7
通讯作者：
S. Doshida
中科院分区：
文献类型：
--
作者：
S. Doshida
许多滑坡发生在过去曾发生滑坡的地方，或者发生在紧邻的周围地区。为了预防和减轻滑坡灾害，创建显示过去滑坡位置的滑坡清查地图是非常重要的。因此，日本国家地球科学与灾害预防研究所(NIED)出版了《滑坡分布图》。这些地图包括超过38万张覆盖日本全境的山体滑坡地形图，由航空照片解译而成。然而，日本各地的山体滑坡分布并不平衡；存在密度差异。我们提出了一种利用特定地质背景的特征和分布进行广域滑坡评估的方法。计算了各地质单元的滑坡体比。这个比率是每个地质单元中的滑坡体面积占该地质单元的整个面积的比率。结果表明，不同地质单元的滑坡体比例差异较大。
Many landslides occur in places where landslides had been generated in the past, or in the immediately surrounding area. For prevention and mitigation of landslide damage, it is very important to create landslide inventory maps that show the locations of past landslides. Therefore, the National Research Institute for Earth Science and Disaster Prevention(NIED)in Japan, has published“Landslide Distribution Maps”. These maps include more than380,000 landslide topographies covering all of Japan, produced by interpretation of aerial photographs. However, the landslide distribution throughout Japan is not balanced ; there are density differences. We propose a method of wide area landslide assessment that uses the features and distributions of a specific geological setting. We calculate the landslide body ratio for each geological unit. This ratio is the rate of the landslide body area in each geological unit to the entire area of that geological unit. The results show that the landslide body ratio differs greatly from one geological unit to the next.