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.
Semaphore Beach is affected by many factors such as natural processes and human impacts including marine litter and the discharge of stormwater. Therefore, several plans have been employed to ensure that the coast is supported through the method of counteracting erosion. However in the future, many management strategies have been put into consideration as well as the environmental, economic and social impacts as well as the predicted consequences. These impacts include traffic related incidents, noises and air pollution and the disruption of wildlife and the erosion of dunes. A method that should be considered for future management of the beach is the use of a concave sea wall, although efficient, this structure would be quite costly. Without the use of coastal management, Semaphore Beach would be unsupported, therefore negatively being affected by a variety of
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.
Problems can arise if these facilities are out of keeping with the setting or when local residents feel they are an unnecessary addition to the area. * Overcrowding Overcrowding can occur when the number of people at a particular site or location exceeds the capacity of the place to handle them. This is generally a seasonal problem. * Wear and Tear Visitors can cause physical damage to the coastal area without realising it. Much of the damage is unintentional, such as at Lulworth where the path between the Cove and Durdle Door is eroding due to the volume of visitors using it through the summer months.
By trapping sand from leaving the beach, it minimises the effects of longshore drift for the areas of beach located near the groyne.
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.
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.
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.
Current coastal management strategies used to preserve Kirra Beach include fences, beach nourishment, vegetation and rocks. Fences (see figure 26) are placed to block wind from blowing sand off the dunes. Behind the fences, large rocks have been placed as a way to decrease the wave impact towards man-made structures (e.g. houses) and trees visible as the rocks have the ability to weaken waves making less destructive. Furthermore, heavy vegetation has been planted and grown on top of dunes, which is another way of counteracting sand. Beach nourishment, defined by adding sand to the beach, is also used as a strategy for coastal management at Kirra Beach.
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.
Planting trees and certain other herbaceous plants can have a significantly positive impact on the mitigation of soil erosion. Some great plants that are useful when trying to control soil erosion are sage, buckwheat, and oak trees. This will help keep the water from soiling up and another way is that wrappers, bottles and other trash are unfortunately a common sight at many well-used beaches and rivers around the world. It should be obvious that the trash from these places often ends up in waterways and can cause pollution. Plastics are an especially big issue when it comes to water contamination at beaches and waterways.
The problem with contaminated beaches will soon take effect on everyone. The main causes that pollution creates in the beaches are from heavy rainfall, natural disasters, and plant malfunctions. Government agencies cannot control the weather, but they can control what goes into the water. In the United States, the number one reason why beaches are closed down are due to contamination in the water that may be harmful and are left untreated. The arising problem with the beach is that the industries are producing toxic chemicals and tossing the unwanted waste into the ocean. Also, the public are recklessly throwing their trash out into the streets. A prime example to demonstrate this is, if someone was trying to throw a bottle into a street trashcan but missed, he/she is unlikely to pick up after himself/herself if no one was around to see it. This scenario causes pollution to the sidewalks. When mother nature disasters occur, these waste products will end up in the storm drains and into the sewage system. The overflow of debri from the cities can flow into the rivers and if not preserved, it can flow into the ocean. The rivers will then carry these human caused waste into t...