The coastal protection structure that reduces erosion along coastlines and river banks called?

The coastal protection structure that reduces erosion along coastlines and river banks called?

• A. Revetments
• B. Soft engineering
• C. Saltation
• D. Rainwater harvesting

Answer: (A)

Coastal protection structures work by absorbing and spreading the energy of waves to stop erosion at the shore or riverbank. A revetment is a protective barrier—often made of rock or concrete—that is laid along the base of a bank with a sloped face. When waves crash against it, the structure breaks up and dissipates much of the energy that would otherwise erode the bank, helping to stabilise the coastline or river edge. This makes revetments a classic hard engineering solution for erosion control. Soft engineering, in contrast, relies on natural processes like dune restoration or beach nourishment rather than a hard barrier. Saltation is the hopping movement of sediment particles, not a protection method. Rainwater harvesting is unrelated to coastal erosion.

Coastal protection structures work by absorbing and spreading the energy of waves to stop erosion at the shore or riverbank. A revetment is a protective barrier—often made of rock or concrete—that is laid along the base of a bank with a sloped face. When waves crash against it, the structure breaks up and dissipates much of the energy that would otherwise erode the bank, helping to stabilise the coastline or river edge. This makes revetments a classic hard engineering solution for erosion control.

Soft engineering, in contrast, relies on natural processes like dune restoration or beach nourishment rather than a hard barrier. Saltation is the hopping movement of sediment particles, not a protection method. Rainwater harvesting is unrelated to coastal erosion.