There are several reasons why transportation can be higher in the crest and midslope of an elevation gradient:
1. Gravity: As water flows down the slope, it gains momentum and energy. This increased energy allows it to transport larger and heavier sediment particles, resulting in higher transportation rates.
2. Steeper slope angle: The crest and midslope of an elevation gradient typically have steeper angles compared to the lower parts. This steeper slope angle accelerates the flow of water, increasing its capacity to transport sediment.
3. Erosion: Steep slopes are prone to erosion due to the force of running water. The erosive power of water is higher in the crest and midslope areas, leading to higher rates of sediment transport.
4. Concentrated flow: Water tends to concentrate more in the crest and midslope because of the topography. This concentration of water results in higher velocity, increasing the transportation capacity of the flow.
5. Limited deposition: The crest and midslope areas generally have limited areas for sediment to be deposited. As a result, sediment that is transported to these areas is more likely to be carried further downstream.
Overall, the combination of gravity, steep slope angles, erosion, concentrated flow, and limited deposition all contribute to higher transportation rates in the crest and midslope of an elevation gradient.
Why is transportation high in the crest and midslope of a elevation gradient
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