We know gravity is the ultimate force behind any landslide and that weathering plays a part. But what pulls the trigger to set a slide in motion?
Land surfaces are held together by multiple forces. The most important of these is friction. Some soil particles, like clay, cling to each other tightly, while others, like sand, are only loosely joined. All landscapes are held together by friction between the sediment cover and the underlying bedrock, some more tightly than others. If something is introduced to disrupt the friction on an incline, a landslide slips into action. Landslides occur when gravity overcomes the force of friction.
Several common causes of landslides are:
By the force of GRAVITY.
Gravity.
Landslides are when land breaks off of a mountain or hill and crumbles as it slides down destroying everything in its path. Mudflows are very similar to landslides but contain 60% of water.
A lahar is a mudflow that results from water mixing with volcanic ash. They can be hot or cold.A pyroclastic flow is a flow of superheatd ash, rock and gas that moves down the side of a volcano and is much hotter than a lahar. This material is ejected directly from a volcano.
When soil moves from one location to another location, it is being eroded in the location that it is leaving, and it is being deposited in the location where it is arriving. Hence, a landslide is both deposition and erosion.
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sediment causes H2O to discolor. also sediment causes some submerged vegetation to die. so to top it off sediment can kill plant life.
Gravity
A mudflow is a mixture of sediment and water that moves down hill in a fluid manner.
Landslides are when land breaks off of a mountain or hill and crumbles as it slides down destroying everything in its path. Mudflows are very similar to landslides but contain 60% of water.
Erosion moves sediment from one place to another
A lahar is a mudflow that results from water mixing with volcanic ash. They can be hot or cold.A pyroclastic flow is a flow of superheatd ash, rock and gas that moves down the side of a volcano and is much hotter than a lahar. This material is ejected directly from a volcano.
Erosion
erosion
A. Landslide
water moves a greater amount of sediment in a much faster way
Kinetic energy is involved when a river moves sediment or erodes its banks.
Sediment moves through a river by these three ways: bouncing, flying, and being suspended.
called a bed load its sediment that moves along the bed of a stream by rolling bouncing or sliding