The Hjulstrom curve Flashcards
1
Q
What does the Hjulstrom curve represent?
A
relationship between river velocity and competence. As well as how the processes of erosion, deposition and transportation vary with river velocity
2
Q
Critical erosion velocity curve shows what?
A
Minimum velocity needed for the river to pick up and transport particles of different sizes
Higher velocity is needed to erode material, than to just transport it.
3
Q
Settling velocity curve shows what?
A
Velocities at which particles of different sizes are despite
Competence of the river at different velocities
4
Q
Why are sand particles eroded at lower velocities than finer clay and silt particles?
A
silt and clay particles stick together more than sand, so they’re harder to dislodge and require more energy to do so.
