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Human activity on affecting coastal landscapes
Coastal management strategies
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The Holderness coast is located on the east coast of England and is part of the East Riding of Yorkshire; a lowland agricultural region of England that lies between the chalk hills of the Wolds and the North Sea. It stretches from Flamborough Head in the north to Spurn Head in the South. It is one of Europe’s fastest eroding coastlines. The average annual rate of erosion is around 2 metres per year but in some parts of the coast, it is up to 10 metres per year. These high rates are attributed to both human and geographical causes. The physical causes are more damaging because the coast is made up of soft boulder clay which experiences more rapid rates of erosion. The erosion of the cliffs and seabed result in huge amounts of sediment being …show more content…
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. There were an array of coastal management strategies put into place to help the situation that encompassed Holderness coast. There are many conflicts that arise from the matter of coastal management. Most locals are opposed to coastal management because of the high coast and the fact that it is very time consuming as well as invasive, so there was a delay in starting management for Holderness, given that it is very tourism-centered. The towns of Mappleton, Hornsea, and Withernsea that are along Holderness coast are examples of attempts at management strategies. The statement that management strategies for coastlines are generally ineffective is somewhat true for the short term and mostly true for the long term in regard to Holderness …show more content…
In more recent times human management has interfered with the sediment balance and natural flows. The strategies that were put into place in the towns of Mappleton, Hornsea, and Withernsea included both hard and soft engineering. Hard engineering is when a structure is used to protect the coastline and soft engineering is working with natural processes to protect the coastline. The hard engineering strategies that were employed in all three towns include sea walls, groynes and revetments. Seawalls are large scale walls designed to deflect wave energy. With the construction of a sea wall in Hornsea, the wall trapped sediment which led to guarantee of steep beaches. Another hard engineering strategy was the construction of groynes. Groynes slow down longshore drift and build up on the beach. Two rock groynes were built in Mappleton in 1991 which helped develop wide and steep sandy beaches. A revetment, which is a natural-looking way to protect the base of cliffs, was also built in Mappleton which helped halt erosion. Similar defenses were built at Withernsea, and rocks were also placed along a sea wall to guarantee further protection. This statement is still somewhat true even in regard to the short term effects because of how the defences have ‘backfired’ in a way and created new issues. These issues have created more of an issue for long term
middle of paper ... ... Site 1 Grid Reference: 211690 Types of Management: - Recurved Sea Wall - Wooden groynes Site 2 Grid Reference: 205687 Types of Management: - Straight Sea Wall - Wooden groynes Site 3 Grid Reference: 201686 Types of Management: - Rip rap boulders Site 4 Grid Reference: 222693 Types of Management: - No management, all natural. Managed retreat. Site 5 Grid Reference: 228695 Types of Management: - Rip rap boulders - Rip rap rock groynes - Wooden groynes - Revetment Site 1 is near Herne Bay and the sites are along the coastline towards Reculver in a North East direction. Site 5 is situated on the beach below the Twin Towers at Reculver.
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.
It is being managed by the local council in two different ways. These include; a rip-rap wall, dune stabilization. The rip-rap wall consists of large rocks which have been piled up at an angle. Behind the rip-rap wall the land use is mainly commercial, but there is also some residential land-use. This method has been used because human land-use is right on top of the ocean, and in order to defend these buildings a hard option is required.
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.
To do so, various stages of protection work were carried out. The first of these was the main protection of the cliff face; the aim was to prevent any falling rock and also cliff retreat with the hope that this would affect the input sediment rate, slowing it down. An extremely important coastal work implemented at the cliff sites from Hastings eastwards towards Fairlight. It was important however, to implement such works on the cliffs, because of their composition or geology that being soft sandstone with a shingle base all along the coastline.
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.
... consider some ideas of what can be done to further enhance the management of the coastal issue. Using the research action plan, I aim to acquire a sophisticated understanding of longshore drift, coastal management and implementations of coastal issues, through the research action plan. Most importantly, I will include various diagrams explaining how the process of longshore drift occurs and what implementations it has on coastal environments, accompanied by an explanation of how the issue is being managed, a detailed outline of the geographical processes involved and a discussion of the impacts of the issue and why it is important.
Coastal erosion is a growing problem along the Gulf Coast. Louisiana is one of the coastal states most affected by coastal erosion. Ninety percent of wetland loss in the nation occurs in Louisiana, losing 25-35 square miles per year. At that rate, Louisiana will lose 640,000 more acres by 2050. Many factors contribute to this land loss, such as rising sea levels, subsidence, hurricane storm surge, cold fronts, and human interference. Cold fronts and hurricanes can both have detrimental consequences on the coast of Louisiana (Zhang 2004) (Restore or Retreat 2012). This research shows whether cold fronts or hurricanes have a larger effect on coastal erosion. The researcher will describe how historical and current satellite imagery help in determining the changes in the Louisiana coast. Based on previous research, the researcher believes that hurricanes have more of an effect on coastal erosion than cold fronts due to the high winds and storm surge.
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
The Precambrian Shield Rocks found in the Brickworks was formed in an ancient sea more than 1.4 billion years ago. Over many years, the heat and pressure from plate tectonics slowly pushed the land into a mountain chain. During the Ordovician period (around 470- 448 million years ago), the mountain chains This layer of shale and limestone is called the Georgian Bay
Surfers, swimmers and sunbathers use beaches for recreation. People fish off beaches for food. Since many people take their vacations at the beach, lots of beaches in tropical locations are important to their country’s economy. Entire cities, regions and countries depend on the money tourists spend while visiting the beach. Beaches are naturally very dynamic places, but people try to control them and build permanent structures, such as houses, restaurants, shops and hotels, on or near the shore. The natural erosion and deposition of beaches becomes a problem. Beaches con disappear over time, or even over night during severe storms. Beaches are areas of loose sediment (sand, gravel, cobbles) controlled by ocean processes. Most beaches have several characteristic features. First are offshore bars, which help protect beaches from erosion. Next is the foreshore, which rises from the water toward the crest of the next feature; a berm. On low-lying shores, dunes form behind beaches. Dunes look like rolling hills of sand and are blown into place by the wind. New, smaller dunes are often changing shape as the wind continues to affect them. Waves and currents move the accumulated sediment constantly creating, eroding and changing the coastlines.
The question that I will be answering for my coursework is which is best at protecting the Northumberland coastline – groynes or beach nourishment. I will be going to Blyth beach also I will be visiting Newbiggen beach I am investigating the Northumberland coastline as part of my geography coursework also because I live in the UK and I want to see how safe the people of the UK are with the safety of the coastline and its defences against coastal erosion. We will be visiting the Northumberland coastline on Thursday the 15th of May 2014.
Coastal Erosion is a process at Muriwai that gradually wears away the rock particles of the earth's surface, transporting them to another location. There are many types of processes that cause erosion at Muriwai such as wave erosion, wind erosion and wave refraction.
Security is risked: Protectionists off and on again battle a country that ought not to be reliant to the point that it can't shield itself.
...f of the CZMU. Although the CZMU’s mandate is to address coastal management with an integrated approach, it is worth questioning whether all interests are accounted for equitably? Barbados’ urban planning strategies employ the top-down approach and the department is reputed for pursuing economically profitable projects. To have both the CZMU and the Town and Country Planning department engaging in public participation consultation would be favourable to pursuing environmental policy in tandem with socio-economic equity.