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Principles and processes of sediment transport - Sediment erosion, transport and deposition

3 important questions on Principles and processes of sediment transport - Sediment erosion, transport and deposition

What is the difference between when a particle erode and deposit?

- The greater the grain size, the deposition curve lies close to the erosion curve. It means that it does not take a lot of effort to erode, but the particles will deposit fast.
- The smaller the grain size, the deposition cure lies farther away from the erosion curve. That means that after deposition is takes a lot of effort to erode the particles (mainly mud, caly and silt), but when eroded they are a long time in suspension before they deposit again.

What is yield strength?

Yield strength is the maximum shear stress that the sediment can withstand before failure occurs in the resistance of mud to erosion. It can be measured using a shear vane.

What is molecular viscosity?

It is a measure of its resistance to a flow in a laminar fashion, and results from the forces that tend to glue molecules together. The viscosity of water in polar regions is about twice that in equatorial regions.