题目内容
Hjulstrom diagram discussed the relationship between particle size and the velocity of water, resulting in deposition and erosion. It tells us that to overcome the coherence of grains the water transports condensed particles with higher speed than it doesethe loose ones.
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A river is always keeping its dynamic equilibrium. When the river loses its equilibrium because of changes in velocity and other reasons, the river will change its competence and capacity to seek a new equilibrium, resulting in deposition or erosion.
In the rivers transportation, there are three types of load:
The types of rivers erosion usually include:
Headward erosion lengthens a river toward its head and narrows the drainage divide, resulting in stream capture.
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