Is mass movement a Subaerial process?
Another sub-aerial process is mass movement. A mass movement refers to the movement of material downslope under the influence of gravity. They can be rapid events, such as landslides and rockfalls or they can be slow processes, such as soil creep.
What are Subaerial processes?
Subaerial processes are land-based processes and occur above the waterline. They include weathering and mass movement, which happen on the cliff rocks. These processes operate on the cliff lithology to weaken them and provide material for erosion.
What are the 4 coastal processes?
Coastal Processes
- Waves.
- Tides.
- Near-Shore Currents.
- Shoreline Weathering.
- Coastal Erosion.
- Sediment Transport and Deposition.
- Organic Activity.
- Changes in Sea Level.
What are examples of sub-aerial processes?
Sub-Aerial Processes
- Freeze Thaw. Freeze thaw weathering involves water entering cracks in rocks and freezing.
- Exfoliation. The repeated action of heating and cooling rocks causing them to “shed” off layers.
- Biological Weathering.
- Chemical Weathering.
- Rockfalls.
- Soil Creep.
- Landslides.
- (Rotational) Slumping.
How do Subaerial processes affect coastal recession?
Subaerial processes (weathering and mass movement) work together to influence rates of coastal recession. Weathering weakens rocks above high tide mark, making mass movement easier by reducing the internal cohesion of the rock. Repeated mass movement leads to rapid coastal recession.
How do Subaerial processes affect erosion?
Sub-aerial processes include weathering and mass movement. These processes operate on the cliff face to weaken it and provide material for coastal erosion.
What are the 5 processes of coastal erosion?
There are five main processes which cause coastal erosion. These are corrasion, abrasion, hydraulic action, attrition and corrosion/solution.
How does mass movement affect the coastline?
Landslides arise when rocks and unconsolidated material on the cliff face are saturated with water (rain or wave-splash). Eventually the material slips down the slope. Landslides occur more often on soft rock coastlines where there are natural joints in the rock, into which water can get.
What are the effects of weathering and mass movement on a Cliffed coastline?
As well as wave energy, other geomorphological processes can modify the coastline. Chemical, mechanical and biological weathering loosen rocks, in advance of their removal by waves and mass movement also provides loose material.
What is the mass movement process?
mass movement, also called Mass Wasting, bulk movements of soil and rock debris down slopes in response to the pull of gravity, or the rapid or gradual sinking of the Earth’s ground surface in a predominantly vertical direction.
What are the 4 processes of erosion?
Destructive waves erode through four main processes; Hydraulic Action, Compression, Abrasion and Attrition.
What Causes slump mass movement?
slump, in geology, downward intermittent movement of rock debris, usually the consequence of removal of buttressing earth at the foot of a slope of unconsolidated material. It commonly involves a shear plane on which a back-tilting of the top of the slumped mass occurs.