On Influence of Snow upon Landslides

概要

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Niigata Prefecture is famous for having not only many landslides, but also much snow.This report mentions the relationship between landslides and snow.Landslides can be divided into two types: one is seasonal movement-type landslides, the other is irregular movement-type landslides. The former, such as Sarukuyoji landslide or Kamiya landslide moves mainly during the times from autumn to the next spring, and stops its movement during the spring and summer seasons. It was turned out that the movement of the landslides related much to rainfalls, snow-melting water and load of snows. And a model to interpret mechanism of the landslide movement is considered.On the other hand, snow-melting water and rainfalls cause the latter type of landslides and it needs a period of time and decrease of the shear strength in slip surface for the landslides to occur again. The landslides of this type occur very often in the snow-melting periods.
社団法人日本地すべり学会の論文