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Coasts (non landforms) - Coggle Diagram
Coasts (non landforms)
Systems
System make up
Inputs
Fluvial sediment, energy from etc
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Equilibruim
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When the inputs and outputs are disrupted the system works to restore equiblruim. -- Dynamic equilbruim
Closed and open systems
Closed sytem --> energy can enter and leave, but matter can't.
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Geomorphic processes
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Mass movement
This is where the force trying to make material on a slope move is greater then the forces trying to stop it move.
In a coastal system mass movement mainly impacts cliffs. This can lead to the transfer of rocks and regolith (unconsilidated rocks on the surface) to the shore below.
Main processes:
Rock fall
Rocks become detached from a cliff face and then fall of the cliff (if it is at a degree of 40o or greater).
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Wave processes
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Depostion
This is where material is droped by waves when they lose energy and are unable to cary the sediment. Heavier material is droped first as it requires the most energy to carry.
Fluvial
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Depostition
As rivers enter the sea they deposit material as they lose energy, this is because they are following into either static seas, or seas going in the opposite direction to the river.
Aolian
Erosion
Wind does do some erosion, but it is limited as the energy required to move sediment is higher then a lot of winds have.
Transportation
Wind can use all the transportation methods execpt sollution, however winds can only move very small particles (the largest they can move is 2mm in diameter).
Depostion
This occurs when the wind speeds drop, this is caused mainly by frication. Deposition occurs mostly in land as there is greater frication.
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