7.4
Questions
1. Coastal management is
developing ways to protect the coastal environment and preserving it's
ecosystem
2. Sea walls, breakwaters and
groynes
3.
Description
|
Advantages
|
Disadvantages
|
Sea walls are walls that are constructed normal to replace foredunes
|
Protect property
|
Scenic appeal reduced
|
Breakwaters are walls constructed from rivers into the ocean
|
Stabilize rivers
|
Rapidly changes erosion, transportation and deposition patterns
|
Groynes are constructed at right angles to the shore
|
Stop build up from longshore drift
|
Sand accumulates to one side
|
Beach nourishment is the moving of sand by cranes
|
Evens out the beach and looks more natural
|
It is expensive and is very ongoing
|
Coastal dune preservation involves managing dunes
|
Helps to preserve natural wonder of area
|
Requires extensive effort
|
4. It is necessary to use a
variety of techniques because because usually the problem requires several
strategies as well as strategies to try and reduce the impact on the
environment.
5.
A. Breakwaters
B. Coastal dune preservation
C. Beach nourishment
D. Sea wall
