LANDSLIDE

• Landslides - The downslope movement of soil, rock, and organic materials, under the effects of gravity and also the landform that results from such movement
• Fall - begins when the material on cliffs or steep slopes lose support or becomes fractured from the main rock.
• Topple - happens when a block of material is detached from a steep slope such as a cliff, and moves forward and downward around a point of axis (imagine
• Slide - A slide occurs when the detached mass of materials move along a downward sloping surface.
• Flow - A flow occurs when materials from (usually) gentle slopes are detached and flow like a viscous liquid along a surface.
• Debris Flow - The rapid movement of slurry (mudslide)
• Debris Avalanche - Occurs from sudden collapse of unstable slopes and fragmented debris rapidly moves downwards along the slope
• Earth Flow - When the flow has a high amount of silt or clay, the flow becomes a more viscous earth flow
• Spreads - This occurs when the mass of soil or rocks extends or spreads laterally. This mass movement of rocks and soil can usually be observed when there is liquefaction or an earthquake.
• Factors that Influence Landslide Development

  1. Geological
  2. Morphological
  3. Human
• Causes of Landslides

  1. Water (Rainfall)
  2. Seismic
  3. Volcanic