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Bullet Landslide
Home » Geological Disasters » Landslide

A landslide is a downslope movement of rock or soil, or both, occurring on the surface of rupture either curved (rotational slide) or planar (translational slide) rupture in which much of the material often moves as a coherent or semi-coherent mass with little internal deformation. Although the action of gravity is the primary driving force for a landslide to occur, there are other contributing factors affecting the original slope stability. Typically, pre-conditional factors build up specific sub-surface conditions that make the area/slope prone to failure, whereas the actual landslide often requires a trigger before being released. The drawing below is a graphic illustration of a landslide, with the commonly accepted terminology describing its features (Fig. 1).



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