Long profile Flashcards
What does the long profile show?
how the gradient of the river channel changes from the source to mouth.
What is base level?
lowest point that the river can erode to, usually sea level
Features of erosion and deposition along the course of a river
Total amount of erosion and deposition are balanced
Rates of erosion and deposition change along the course of a river
What is the graded profile?
Over time the long profile will change from being uneven to a smooth curve
Upper stage energy features
Steep gradient
High above sea level
Lots of potential energy
Middle stage energy features
Gradient decreases
Kinetic energy
River gains velocity
Lower stage energy features
Little potential energy
Lots of kinetic energy
River flows faster