Runout distances of earthquake-induced landslides

Cases of earthquake-induced landslides in Japan are described. Items such as name, date, location, causative event, volume, area, thickness, drop height H, attained distance L, Fahr-boeschung H/L, velocity, composition, references, etc. of investigated landslides are given. Fahr-boeschungs or H/L ratios, which correspond to net coefficient of friction, are variable depending on size, geology and other factors. Moisture content is one of the important factors for triggering and for increasing runout distances of slides. Volume is another important factor affecting the runout distance. Volcanic areas are particularly susceptible to debris avalanches. The time-distance relationships of some of the slides are reproduced, and the maximum velocity is found to reach about 5 to 50 m/s.