Lesson 4 -sediment cells Flashcards
1
Q
what does coastal sediment come from?
A
seabed beaches river channels/estuaries erosion from the cliffs material from biological origin
2
Q
what is a sediment cell?
A
a stretch of coastline in which the movement of sediment is largely self-contained
3
Q
what is a sediment budget?
A
defined as the balance between sediment being added to and removed from the coastal system
4
Q
what does a sediment cell have?
A
inputs
transfers
outputs
5
Q
what are the inputs (sources) of sediment cells?
A
primarily from river coastal erosion and offshore sources such as banks and bars
6
Q
what are the transfers (flows) of sediment cells?
A
longshore drift mainly together with rip currents
7
Q
what are the outputs (sinks) of sediment cells?
A
these include the beach, sand dunes and offshore deposits
8
Q
within a sediment cell what marine processes occur?
A
erosion
transportation
deposition
