The Characteristics of a Beach Beach erosion is beginning to become a significant problem. The causes of erosion are: sand coming on to the beach from waves, lakes, rivers, tides, etc.
Storms and even, calm climates can create erosion.
Human recreation such as dredging, river modification, removal of vegetation, and installation of protective structures. Some situations of erosion are exceedingly threatening and serious, like in this scary video. We try to prevent erosion, but sometimes it only makes it worse. Type of Erosion Control: Jetties PROS OF JETTIES:
The intention of the jetty is to prevent sediment lacking areas from erosion.
Big tourist attraction for recreation purposes. CONS OF JETTIES:
They make erosion on beaches worse.
Because
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The structure permits the dune process to keep going.
THE CONS OF BREAKWATERS:
Erosion will continue to happen in the lee of the breakwater for several years after the construction.
Causes erosion of downdrift stretches on beaches.
Dangerous for anyone that may be standing on them in case of extreme high tides drifting in.
Causes unwanted odors, unsafe beach areas, and build up of jetsam and seaweed. Type of Erosion Control: Beach Renourishment PROS OF BEACH RENOURISHMENT:
Increases the volume of the sand on the beach.
Enhances the natural recovery of the dunes.
Creates more area for recreational purposes.
CONS OF BEACH RENOURISHMENT:
Sand on the upper part of the beach will be exposed to wind erosion.
The deposits may shield existing dune plants.
Any sand or gravel that is not a close match to the sand originally on the beach may trouble communities of invertebrates and fish.
BEST TYPE OF EROSION CONTROL: Planting of Dune Grasses and Plants THE PROS OF DUNE GRASS PLANTING:
New grass and plants will help boost restoration without ruining the environment on the beach.
The grass catches the sand that the wind blows that causes erosion.
No harmful damage will happen to the
However, if any action is taken to defend the coastline, if you hinder in nature's course of beach erosion, there will always be after effects resulting from unnatural intrusion. This proves that any sea defence could prove a problem especially with the land owned by Nation Trust. Nevertheless if you could prove to the owners of the land to the extent of which erosion is taken place and show them how much LSD is affecting the area, action may well become a better option.
There are many things working together to ensure Dune stabilization. These include; re-vegetation, fences, poly-mesh fencing, planked walkways, and controlled pedestrian access. This method is a softer option than the rip-rap wall and is used because human land-use, which at this place consists mainly of recreational buildings, is far away from the ocean. Deposition is also being managed at North Cronulla beach. Dune stabilization is being used to prevent deposited material from being eroded away.
We saw that there was vegetation, which had been planted on the sand dunes near Dunwich Heath. There is also fencing around the dunes to stop them being eroded through people walking on them. Coastal Protection At Aldeburgh Text Box: Fig 4.1Text Box: In Aldeburgh however, the types of protection involve 'hard' protection. These are man-made objects. At Aldeburgh, three hard protection methods have been employed, and one soft method.
There are many different types of coasts that exist throughout the United States. The south shore of Long Island has a unique types of coast known as a barrier beach. Barrier beaches are long narrow land forms that are composed of sand and other lose sediments. These sediments are brought together by the actions of waves, currents and storm surges. Barrier beaches are subject to constant changes by the same forces. Sand is constantly eroded in one area an deposited in another. Barrier coasts are important for a number of reasons; they protect the mainland of Long Island from the open ocean and flooding during storms, for recreational use and the unique ecosystems which exist on barrier beaches.
Erosion often causes landforms such as cliffs, rocky platforms, headlands, caves, stacks and arches. (See Appendix B). When waves break, it carries material on and off the shore. When more material is carried in the backwash, the wave is destructive. This is the process of hydro-orientated erosion.
Coastline management is just one of the solutions put in place to repair human pressures put on coastal environments. Coastal defenses help to prevent coastal erosion and flooding by the sea. Management strategies can be both short term and long term, and both sustainable and unsustainable. The two types of cliff defenses are cliff base and cliff face. There are also two types of management, hard engineering and soft engineering.
Using all the information collected, I can conclude that North Shore and South Shore beaches are very different. North Shore beaches are rocky, unorganized, jagged, and coarse. South Shore beaches are smooth, fine, uniform, and have dunes. I conclude that this is because of the geography of the two shores. The North Shore was heavily affected by glaciers that deposited rocks and eroded the land. The South Shore was heavily eroded by coastal and wind erosion. This is due to its location in barrier islands and the Atlantic Ocean. North Shore and South shore beaches are very different.
Unlike Kirra Beach, instead of nourishing the beach, the Gold Coast City Council has placed multiple groynes (figure 27) at Palm Beach. This is a form of hard engineering that is built from the beach out into the sea to prevent erosion initiated by the movement of sand or longshore drift. Moreover, as houses are built on the beach, the residents of Palm Beach have placed fences, large rocks, heavy vegetation and cement to protect their backyards and houses from eroding with the sand. Thus, management strategies have been put in place to manage the natural and human impacts on these two
The beaches of South Carolina are a prized quality and possession to the state and its people as it provides beauty, enjoyment and the economic benefits of tourism year round. Due to storms, natural processes of sand movement and development, the beaches of South Carolina, specifically the Grand Strand beaches and local beaches of Sullivan’s Island and Folly Beach, are eroding at a rapid rate. Erosion is a natural process effected by sea level rise, storms and currents and many techniques have been used in the past to combat erosion issues that threaten to wash away beaches and homes in the process. Erosion preventative structures used in the past, such as jetties and seawalls, have proven to be even more damaging to beach erosion but Beach Front Management policies and local and state government agencies are working hard to reverse the effects and incorporate new ways to fight erosion. Today new policies are in effect to protect the eroding coastline and beachfront properties in better ways, and new techniques such as beach renourishment are being used, but there is frustration and tension from community members and home owners as the sea inches closer everyday to their homes and threatens the beaches they love. Ultimately, protection of the South Carolina coast has come a long way in terms of policies and regulations, but stricter enforcement of regulations, awareness and responsible development is needed to ensure that property and the beaches are protected from erosion issues so that they are available for all to enjoy far into the future.
A1: A coastal landscape is the area where land meets the sea or ocean. There are a variety of different plants and animals that live in coastal landscapes. Many of them rely on the food deposited by the sea. One example of a coastal animal is the starfish.
Transport by air, road and rail is rising steadily because of the increasing number of tourists. One consequence of this is that tourism is responsible for a large amount of air pollutions. These emissions, as well as those from the production of electricity (another important tourist need) are linked to acid rain, chemical pollution and global warming. And when tourists are not going anywhere, they are probably on the beach, littering both the beach with their rubbish or polluting the water with noisy jet skis that leak oil into the water killing many plants and animals. Other thing that the tourists don't realize is, that their constant trampling on soil causes the plants to die and loosens the soil particles and also accelerates soil erosion in that area.
The financial and social disadvantages of constructing groynes are that it requires constant maintenance by the local council and the groynes are visually displeasing to the community. Constructing groynes will also worsen the problems occurring with longshore drift in other areas, as the opposite end of the beach is deprived of sand and the blockage prevents other beaches from being replenished.
Conventional breakwaters are massive in size and generally associated with large scales in construction materials, effort and cost. The development of large breakwater schemes with poor design and management may trigger a number of adverse effects on neighbouring coastal environment, e.g. large amount of wave reflection, alteration of beach morphology, water quality deterioration and change of marine ecosystem. To alleviate the above problems, various ingenious designs of light-weight breakwaters have been proposed, tested and constructed in the past as alternatives to the conventional breakwaters, one of which is the free surface breakwaters.
People from all over the world go to beautiful beaches that are filled with water as clear as ice or as beautiful as diamonds. But, what will happen if we do not conserve the appealing sites that draw attraction to the public? Contaminated beaches has become a controversial issue to the public because of the causal problem, the harm to the people and marine animals, the government agencies supporting or opposing pollution, and the industries involved in creating such unlawful decisions. To create and find a solution, we must first find the core to the problem.