Lecture 21 Flashcards
0
Q
What is stream velocity dependent on?
A
Run-off Area of cross section Gradient of river Form of channel Irregularities in bedrock
1
Q
What is run-off
A
Amount of water that passes a point in river during a fixed time , and is dependent on stream velocity
2
Q
Define competency
A
Maximum grain size that can vibe transported by river
3
Q
What is capacity
A
Rivers maximum ability to bear loads
4
Q
When does deposition takes place ?
A
When the stream velocity decreases below the minimum for a specific grain size
5
Q
What is decrease in velocity attributed to?
A
To river entering the sea
Stream gradient decreasing
run-off decreasing
River course widening
