write a short note on landslides ?
Answers
Explanation:
A landslide is defined as the movement of a mass of rock, debris, or earth down a slope.Landslides can cause seismic disturbances; landslides can also result from seismic disturbances, and earthquake-induced slides have caused loss of life in many countries.
Answer
A landslide includes a wide range of ground movements, such as rock falls, deep failure of slopes and shallow debris flows.
The biggest reason for a landslide is that there is a slope and material goes down the slope because of gravity.
But other things also contribute to landslides:
erosion by rivers, glaciers, or ocean waves makes slopes too steep
rock and soil slopes made weak through saturation by snowmelt or heavy rains
earthquakes that make weak slopes fail or crack the rocks that will eventually fall down
volcanic eruptions produce loose ash deposits, heavy rain, and debris flows
vibrations from machinery, traffic, blasting and even thunder may trigger failure of weak slopes
weight from much rain or snow, stockpiling of rock or ore, from waste piles, or from buildings may stress weak slopes to failure and other structures
groundwater pressure making the slope unstable
in shallow soils, the removal of deep-rooted plants that bind the colluvium to bedrock.