Run-off Variation (AQA A-Level Geography): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
ShowHide
Practise the cards
10 cards from this deck
Discharge in rivers
Discharge in rivers
Volume of water passing a point per unit time
How to calculate discharge
How to calculate discharge
Cross-sectional area × velocity
Unit for discharge measurement
Unit for discharge measurement
Cubic metres per second (m³/s) or cumecs
River regime
River regime
Variability in discharge throughout the year
Storm hydrograph
Storm hydrograph
Graph showing discharge during a storm event
Lag time
Lag time
Delay between peak rainfall and peak discharge
Flashy hydrograph features
Flashy hydrograph features
Short lag time, high peak, steep limbs
Subdued hydrograph features
Subdued hydrograph features
Long lag time, low peak, gentle limbs
Effect of circular basin shape
Effect of circular basin shape
Produces flashier hydrographs
Effect of urbanisation on rivers
Effect of urbanisation on rivers
Creates flashy hydrographs, shorter lag times