Fluvial Characteristics of a River
How The Bradshaw Model Can Be Used To Model The Fluvial Characteristics Of A River
Need to understand the river sections and how it impact the discharge, load quantity and river bed and channel. Need to learn about factors affecting river volume, ie size, presence of vegetation, rocks and climate. To have a deeper understanding of impact of river erosion, ie corrasion, attribution, solutson and hydraulic solution. Also on how river transport material, in term of traction, saltation, suspension and solutions. On how waterfalls, gorges and valleys are formed.
What are the characteristics on valleys, ie their upper course, middle course and lower course.
Floodplain and levees , need to learn about when there is a heavy rain, how does this affect the rivers, land and how floodwater are spread out to a larger area and how water losses speed, how water recedes, how river deposits material its carrying on loa,d leaving deposits on reiver banks and bed, how the coarse sediments are deposited closer to river edge and finer particles are deposited further away, on how deposit materials are build up on both sides as more and more flood occur.
Heavier materials nearer to the rivers are formed raised banks.
We need to understand the river process taking place which are determined by amount of energy, that a river processes. The amount of energy determines whether materiials are eroded, transported or deposited. As a river speed decreases, there will be less erosion although the river will continue to transport some of it load. If the speed continues to drop, the sediments will eventually be deposited. In general, the larger the particle, the higher the speed required for eroding it. The particles of sizes of say more than 20 mmm such as gravel requires a river speed of 200 cm per second to be eroded.