Topic 4b - River Processes and Pressures - Drainage Basin Hydrological Cycle and Hydrographs
Terms in this set (18)
A graph showing changes in a rivers discharge (line graph) and rainfall (bar graph) over time.
The increase in river discharge as the rainwater flows into the river.
The decrease in river discharge as the river returns to its normal level.
This is a delay between peak rainfall (highest amount of rainfall) and peak discharge (highest volume of water in the river channel).
This is the highest discharge in the period of time the graph records for.
The highest amount of rainfall received from the storm event.
Conditions in a drainage basin in the period before a rainfall event, such as saturated or frozen ground.
Rocks that are impermeable, like clay, do not allow water to pass through them.
Rocks that are permeable, like chalk, allow water to pass through them.
The process whereby water soaks into the soil and rock.
Water flowing vertically through the soil and rocks below the surface.
Water flowing horizontally through the soil layer into the river.
Water flowing horizontally through the rock layer into the river.
Water turns from water droplets into water vapour due to heating from the sun and rises from the ground.
The release of water vapour through the stomata (pores) in plant's leaves
The process where vegetation catches rainfall on its leaves and branches.
Antecedent rainfall the amount of moisture already in the ground before a rainstorm
the discharge or contents of a river which is just contained within its banks. This is when the speed, or velocity, of the river is at its greatest
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Topic 4b - River Processes and Pressures - River processes
Topic 4b - River Processes and Pressures - River Changes
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Topic 4b - River Processes and Pressures - Drainage Basin