The Hjulstrom curve

Question 1

What does the Hjulstrom curve represent?

Answer 1

relationship between river velocity and competence. As well as how the processes of erosion, deposition and transportation vary with river velocity

Question 2

Critical erosion velocity curve shows what?

Answer 2

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.

Question 3

Settling velocity curve shows what?

Answer 3

Velocities at which particles of different sizes are despite

Competence of the river at different velocities

Question 4

Why are sand particles eroded at lower velocities than finer clay and silt particles?

Answer 4

silt and clay particles stick together more than sand, so they’re harder to dislodge and require more energy to do so.