Most landslides move slowly and across short distances.Some landslides however, travel long distances. They are called long traveling landslides.The latter type cause large and widespread damage. This study overviews long travelling landslides in Japan.Spatial distribution and some characteristics of their movements are reported.The ratio(Tr) of the horizontal travelling distances to the horizontal length of the original slope is defined as a new parameter.The movement is classified as : full fluidized (Tr 0.9), partly fluidized (0.3 Tr 0.9) and non fluidized (Tr 0.3). Tr is influenced by not only the volume of the landslide, but also by other factors.
Key wordsFlandslide, long travelling landslide, spatial distribution, movement
characteristic