Abstract
An analysis of the landslide data shows that there exists a linear relationship between the “runout height/runout distance” and the “tangent of slope in the source area”, which is independent of geology, volume and causes. This relationship can be expressed as
H/L=0.73tanθ-0.07 (1)
where, H: runout height of a debris, L: runout distance, θ: slope angle of a source area (between hor izontal line and line connecting crown with toe of surface of rupture).
An application of this provides an estimation of the runout distance of a debris in advance.
