Classifying coasts

Question 1

Sediment Cells

Answer 1

These are typically considered a
closed-system in terms of sediment. There are eleven sediment cells in England and Wales.
Sources – Where the sediment originates from (e.g. cliffs, offshore bars).
Through flows – The movement of sediment along the shore through longshore drift.
Sinks – Locations where deposition of sediment dominates (e.g. spits, beaches).

Question 2

In normal conditions, what equillibrium do coasts work under?

Answer 2

the coastal system operates in a state of dynamic equilibrium . Dynamic
equilibrium in a sediment cell is where input and outputs of sediment are in a constant state of
change but remain in balance . Physical and human action can change this equilibrium

Question 3

positive feedback

Answer 3

The coastal system has mechanisms which enhance changes within a system, taking it away from
dynamic equilibrium

Question 4

negative feedback

Answer 4

mechanisms which balances changes, taking the
system back towards equilibrium

Question 5

The Littoral Zone

Answer 5

is the area of the coast where land is subject to wave action . It is constantly
changing and varies due to:
- Short-term factors like tides and storm surges.
- Long-term factors like changes in sea level and climate change.

Question 6

Backshore

Answer 6

area above high tide level and only affected by exceptionally high tides.

Question 7

Foreshore

Answer 7

this is land where most wave processes occur

Question 8

offshore

Answer 8

the open sea