• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Human impacts at the coast intended to stabilise a coast line can alos lead inadvertently to increased coastal erosion. Discuss

Extracts from this document...


Level one Geography Tutorial 2 1. Human impacts at the coast intended to stabilise a coast line can alos lead inadvertently to increased coastal erosion. Discuss Humans have a great impact on coastal areas; these impacts may be of a positive or negative nature. In this essay I will aim to discuss how mans effort to stabilise coastal regions often results in causing more problems, and ever worsening the original problems, which may have existed. To begin with I will talk about specific problems, which result from the human alteration or moderation of a coastal regions. Modification may take place in a number of forms there are various different methods of protecting coastlines these include the following, groins, jetties, breakwaters, Seawalls, and revetments. Each of these methods has been proven to be of some degree of use, but also each have knock on affects resulting in further erosion. Sea walls are perceived to be the answer to many different erosion problems at coastlines. They are the most costly coastal protection schemes to construct and can lead to further erosion. ...read more.


Groins are built at right angles to the shoreline. It is argued that groins only benefit areas in the up drift regions, and don't have a positive affects on the down drift areas. If this argument were correct erosion would seem be accelerated in down drift regions, therefore the greater number of groins that are constructed on a stretch of bay the greater the erosion down drift, for this reason groins in some locations are not encouraged. Although Groins do trap sediment, they can redirect beach material off shore. This occurs as currents around the structure force sand outwards to the end of a groin, this changes the topography of the surrounding area making it more complex and can lead to mounds of sand a the sea end of groins. Minikin (1952) suggested that groin arrangement and characters must be suited to the beach concerned. This suggests that groins can be affective if situated properly. Although this method of ceasing beach erosion can be very effective, its drawbacks are obvious. ...read more.


Breakwaters are constructed by strategically placing, offshore, a line of large boulders parallel to the shoreline. The effect these have is to limit the energy of the waves before in reaches the coastline and create an area of calm water behind them called a wave shadow. A breakwater off Santa Monica, California resulted in interference with the long shore drift; this produced a large deposition of sand behind the breakwater, and increased erosion down current. Up coast from breakwaters the shoreline may advance but in contrast to this the down drift side of the shoreline can erode quiet severely As well as this not enough research has been carried out as to where the best place to situate them is in respect to the beach, or cliff line. Conclusion There are many types of coastal defence schemes each of which have positive and negative affects on protecting land and property from the sea. Whatever man made features are made there is a good chance that they will interfere with the natural movements of beach sediments. This may lead to increased erosion in certain areas eventhough the structure was originally desighned to prevent this problem. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our University Degree Environmental & Physical Geography section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related University Degree Environmental & Physical Geography essays

  1. Global Warming. Due to too much information, there are many conflicting views on whether ...

    a few theories that have been put forward, such as climate change, invasion, salination, and migration. Using their survival techniques, both humans and planet earth survived many hardships in previous decades, but now that just seems an impossible task.

  2. Coastal and marine pollution in India. In India most contamination from land base ...

    dynamics of the coastal flow in the Arabian Sea and the Bay of Bengal. The power of basin scale currents and their pressure on coastal shelf motion is now recognized, even despite the fact that many aspects still require study.

  1. Identify the underpinning philosophy of Coastal Zone Management and will discuss how the UK ...

    (Smith, H, 2000). Waste disposal is an activity that has it origins from tourist, industrial, and domestic sources. Furthermore, coastal engineering and management strategies are situated within the coastal region, including replenishment and defence schemes. The activities discussed highlight the fact that the coastal zone is a multi-purpose area with many user functions.

  2. The islands of Texel and Schiermonnikoog have different and similar intrinsic values. Discuss these ...

    Importantly the population distribution varies between each island, Texel and Schiermonnikoog being densely and sparsely populated, respectively (Figure 1). This could be factor influencing coastal protection and management, as a higher population density usually signifies greater settlement and the increasing need to defend and to take less 'risk' concerning action.

  1. Ocean services - the companys current activities, legislative requirements and any possible impacts on ...

    Ocean's Director believes that the future of the company is in the provision of training services to the larger shipping companies, in particular overseas clients. As part of this planned growth Ocean intends to implement an Environmental Management System (EMS), in this case ISO 14001 certification.

  2. The current system of environmental governance is a diffuse process, spread through many different ...

    facilitating the provision of financial and technological assistance that may be required by developing countries for environment and sustainable development. Research Methodology: Due to lack of resources and materials, this project is totally based on internet search and net browsing.

  1. This Community Research Project is aimed at examining Barangay Nazareths waste management system in ...

    odors and diseases) because using it would lessen the throwing of garbage on the site.

  2. "The tropical rainforest is the most complex ecosystem on Earth, yet human use of ...

    This poses threats to the environment. Figure 6.Trends in gold production in Ghana before the mineral sector reform (1958- 1986) and after the Mineral sector reform in 1986 (1987-2002) (Source:Parks, P.J., 2007. Natural resource use conflict: gold mining intropical rainforest in Ghana.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work