LECTURE 3: fluvial processes Flashcards
1
Q
what three processes cause fluvial erosion
A
rainsplash, sheetwash and rills/gullies
2
Q
3 types of streams
A
ephemeral, imtermittent, perennial
3
Q
what does rainsplash mean
A
movement of materials downstream
4
Q
what is the formula for runoff
A
(R)=precipitation- evapotranspiration +/- storage
5
Q
what is the formula for discharge
A
(Q)=depthxwidthxvelocity
6
Q
what is competence
A
largest sized particle a stream can carry
7
Q
what is capacity
A
maximum amount of debris a stream can carry
8
Q
formula for stream power
A
power=densityxchannelslopexdischarge
9
Q
formula for flood probability
A
recurrence(number of years of data +1)/ranking of flood
10
Q
what types of human made structures are used to control fluvial processes
A
levee, dams, channels, high built
11
Q
whats a levee
A
an embankment
