Coastal systems an
landscapes
, Coasts are natural
systems : Examples within coastal system :
inputs wind tides ,
Inputs matter/energy added to energy inputs enter from I
system waves
>
a
-
=
, ,
is Outputs =
matter/energy removed from a system . outputs >
-
sediment can be washed out to sea , or deposited a
is
flows/transfers =
movement of energy/matter in
system . flows/transfers +
processes such as erosion ,
weathering ,
trans
deposition sediment within system
i
Stores/components =
where matter /
energy
is kept builds up .
move
stores/components >
-
landforms ,
such as beaches ,
dunes + spits .
Positive feedback :
amplifies change within system Sediment cells :
->
11 around UK c
Examples :
is Considered as clo
beach forms/gets Cliff erodes
larger
⑫
leg from waves
Sediment budget =
j & ↳ Constructive
j
~ v
material
more sediment
waves
slowed
are
is released ↳
is deposited
, material !
↑ abrades the Cliff
Feedback systems dynamic equilibrium
:
!
>
-
state of balance
COASTAL SYSTEMS
=
between inputs +
outputs
Negative feedback :
counteracts or reduces
changes within a
system , maintaining stability
. Waves :
beach beach created
is eroded
grows "waves are
by wind blowing over the
surface of the sea Friction between the wind
↓ ↑
.
and surface of the sea water circular motion .
gives
1 The effect of a wave on the shore depends on its
height.
Cliffs behind are Sediment eroded from
Wave
height is
affected by the wind speed fetch
↑
+
exposed to wave cliffs is deposited on
the of the wave .
attack beach .
Wave refraction changes the amount
landscapes
, Coasts are natural
systems : Examples within coastal system :
inputs wind tides ,
Inputs matter/energy added to energy inputs enter from I
system waves
>
a
-
=
, ,
is Outputs =
matter/energy removed from a system . outputs >
-
sediment can be washed out to sea , or deposited a
is
flows/transfers =
movement of energy/matter in
system . flows/transfers +
processes such as erosion ,
weathering ,
trans
deposition sediment within system
i
Stores/components =
where matter /
energy
is kept builds up .
move
stores/components >
-
landforms ,
such as beaches ,
dunes + spits .
Positive feedback :
amplifies change within system Sediment cells :
->
11 around UK c
Examples :
is Considered as clo
beach forms/gets Cliff erodes
larger
⑫
leg from waves
Sediment budget =
j & ↳ Constructive
j
~ v
material
more sediment
waves
slowed
are
is released ↳
is deposited
, material !
↑ abrades the Cliff
Feedback systems dynamic equilibrium
:
!
>
-
state of balance
COASTAL SYSTEMS
=
between inputs +
outputs
Negative feedback :
counteracts or reduces
changes within a
system , maintaining stability
. Waves :
beach beach created
is eroded
grows "waves are
by wind blowing over the
surface of the sea Friction between the wind
↓ ↑
.
and surface of the sea water circular motion .
gives
1 The effect of a wave on the shore depends on its
height.
Cliffs behind are Sediment eroded from
Wave
height is
affected by the wind speed fetch
↑
+
exposed to wave cliffs is deposited on
the of the wave .
attack beach .
Wave refraction changes the amount
