Have you ever thought about working as a coastal planner? How do you solve problems in your work area?
When in a work area experiencing coastal erosion with the state of the affected area including tourism and settlement areas that have been installed a series of groynes, then there is a river adjacent to the settlement and where there has been a dock, then things will be done first as a Coastal planners first analyze the causes of coastal erosion in the region. By knowing the cause of erosion, overcoming these problems will be more appropriate and more effective. The erosion causes physical damage to coastlines. Conditions of physical damage to the coastline along the coast can be minimized or prevented gradually. To determine the damage to the beach can be identified by changes that occur in the coastline.
The shape of the beach profile is influenced by waves, sedimentary properties such as mass density and resistance to erosion, particle size and shape, wave and current conditions and beach bathymetry. Then after knowing with certainty the cause of coastal erosion and some damage caused, the next step is to protect the beach in several ways such as, strengthening the coast from damage due to wave attacks, changing the rate of sediment transport along the coast, reducing wave energy reaching the coast and also reclamation beach.
Based on the case with the aforementioned circumstances, there are beach buildings such as jetty and groynes. But the existence of the beach structure is not enough to withstand the erosion that occurs on the beach. It is possible that placement is not optimal so that it can cause a new imbalance that disturbs along the beach sand drift and causes drift erosion at the bottom. This can cause a coastline retreat that endangers the residential area behind it. Not only residential areas, tourism areas are also affected. This means that the working area is dominated by sandy beaches. It is also important to know the typology and characteristics of coastal areas to make the best management.
Thus, the concept of countermeasures that I can convey is constructive, vegetative and bureaucratic. A brief description can be given briefly below.
1) Constructive: Handling that is constructive is by protecting the artificial coast. Based on the typology of the beach which is a sandy beach, a beach protector that is considered appropriate is a revetment. Therefore, the construction in the form of revetment aims to reduce erosion in areas with small waves.
2) Vegetative: Handling vegetatively emphasizes natural handling. Efforts to deal with the preservation of natural coastal protectors such as beach maintenance, stabilization of sand dunes, biotechnology are becoming more environmentally friendly choices. Trees such as mangrove ecosystems can help hold sand and slow down wind and wave erosion. In the case of the problem above, the existence of mangroves is considered to be able to handle the problem.
3) Bureaucratic: The last treatment is bureaucratic handling. This handler focuses on regulations to regulate the management of coastal areas. Bureaucracy such as regulation needs to be implemented considering that the coast is a transition between land and sea so that in coastal management institutions are needed to manage it. Such as policy making on the regulation and utilization of coastal resources based on carrying capacity, determination of coastal borders and mangrove planting.