Zusammenfassung der Ressource
Factors affecting the energy of rivers
- Gradient
- Steep gradient, makes the velocity faster
- Gentle gradient, makes the velocity slower
- How rough the channel is
- If there is lots of obstacles in the river, then the river will be slower
- The less obstacles the faster the rover can travel
- Size of basin
- If the basin is bigger, then there is a larger discharge to transport
- If the basin is small, then there is a smaller discharge to transport
- Presence of vegetation
- More vegetation, means that there
is a Interception delay for
percolation to reach the river,
which leads to a low volume of
discharge
- Permeability of rocks
- High permeability means that there is a high volume of overland flow
- Low permeability means that there is a low volume of overland flow
- Climate
- If there is a monsoon season/ Wet season then there will be a higher volume of water
- If there is a high amount of growth in plants, then there will be a low volume
- Hydraulic Radius
- Wetted Perimeter (WP)
- More contact with the wetted perimeter, will cause more friction which
will lead to the velocity slowing down
- CSA/WP
- A high hydraulic radius means that the river will be
more effective as less energy is used to overcome
friction
- Cross sectional area (CSA)