Respuesta :
Answer:
Ways to prevent beach erosion : Groyne, Offshore breakwater structure, Artificial headland. Disadvantages of each have been given below
Explanation:
Beach Erosion is of sand around coasts, it displaced to some other places.It can lead to flooding, building loss.
Ways to prevent beach erosion are :
1. Groyne : A coastal structure - of wood, rock, bamboo - constructed perpendicular to the coastline from the shore into the, sea to trap longshore sediment transport or control longshore currents.
- Disadvantages : Erosion downdrift risk, more structure & more maintenance needed, Local scours at structures' toes
2. An offshore breakwater structure : is built in the near shore zone, parallel to the shore and serves as a wave absorber. It helps reducing wave energy by serving as a wave absorber.
- Disadvantages : Large, difficult to build & design structures, vulnerable to strong wave action
3. Aritificial Headland : It is a structure constructed to promote natural beaches, as it plays role of a artificial headland. It is relatively easy to construct and little maintenance is required
- Disadvantages : Relatively large structure, Poor stability against large waves
