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

The purpose of this study is to measure and explain the coastal processes occurring at Walton-on-the-Naze.

Extracts from this document...


The purpose of this study is to measure and explain the coastal processes occurring at Walton-on-the-Naze. We have chosen this particular area because it has a good rate of coastal retreat. The evidence for this is that there is plenty of bare soil which suggests that there has not been enough time for the vegetation to grow back. This means that the erosion must happen every few months. I have included explanations of the ways that this has been combated: 1. Vegetation 2. Rip Wrap 3. Drainage 4. Cliff Grading 5. Groynes 6. Sea Wall 7. Breakwaters These are the technical terms used in the explanations of the sea defences: Erosion: this is when rocks are worn away by the sea. Can end up forming new land structures. Weathering: things can be weathered in three different ways, Physical Weathering, Biological Weathering and Chemical Weathering. Mass Movement: when material moves down a slope affected by the pull of gravity. Transportation: this is when material is transported by rivers or seas. My aim in this investigation is to investigate the different factors affecting the rate of retreat of the Walton-on-the-Naze coastline. This will include clear diagrams and graphs of the information. My aims are: * To investigate and explain the rate of retreat; * To investigate how the character of the waves and sea affects the rate of retreat; * To investigate how transportation affects the rate of retreat; * To investigate how the nature of the beach affects the rate of retreat; * To investigate the nature and effectiveness of coastal defences. The objectives are: 1. To investigate how the nature of the cliffs affects the rate of retreat; 2. To investigate how the character of the waves/sea affects the rate of retreat; 3. To investigate how transportation affects the rate of retreat; 4. To investigate how the nature of the beach affects the rate of retreat; 5. ...read more.


60 x v water depth � wave frequency I calculated the wave energy using the equation like this: Wave energy = 740 x H� x wave length Wave type was decided with the following information: Generally, Constructive wave frequency is less than 10 per minute, Destructive wave frequency is greater than 13 per minute. But on the day we made the observations the waves were of low energy and therefore were deemed to not be destructive but constructive in nature. Data Presentation The data and working for objective one made on our trip is shown in a table below. 1 2 3 4 5 6 7 8 9 10 Wave Frequency 14 15 16 16 15 16 12 12 14 19 Wave Crest 0.45 0.40 0.40 0.43 0.44 0.45 0.40 0.47 0.38 0.37 Wave Trough 0.25 0.23 0.21 0.21 0.21 0.22 0.23 0.22 0.26 0.25 Wave Height 0.20 0.17 0.21 0.22 0.23 0.23 0.17 0.25 0.12 0.12 Water Depth 0.35 0.32 0.32 0.32 0.33 0.33 0.32 0.35 0.32 0.31 Wave Length 7.85 7.01 6.57 6.57 7.12 6.67 8.76 9.16 7.57 7.39 Wave Energy 232.36 149.91 214.4 235.01 278.71 261.10 187.34 423.65 375.68 341.78 Wave Type CON CON CON CON CON CON CON CON CON CON Fig. 2.1 On the next pages I have constructed graphs to show the data collected in the table above (Fig.2.1.) Fig 2.2. Fig 2.3. Fig.2.4. Fig2.5. Fig 2.6. Fig 2.7. Analysis Fig. 2.1 shows the data collected on our trip to Walton On The Naze. It includes height measurements for Wave Crest, Wave Trough, Wave Height, Water Depth and Wave Length, Kilo-joule measurements for Wave Energy. Also frequency measurements for Wave Frequency in a one-minute time period. Fig. 2.2 is a graph showing the data in the table for Wave Frequency. Fig. 2.3 is a graph showing the data in the table for Wave Crest. Fig. 2.4 is a graph showing the data in the table for Wave Trough. ...read more.


Drainage Drainage has been installed within the cliff slope to absorb any loose water in the cliff. These are made out of terracotta because this lets water through the sides of the pipe unless it is waterproofed at the bottom. This is quite successful as the area of which this has been installed the erosion has been reduced by quite a considerable margin. The pipes are old and beginning to wear with age. Cliff Grading Tendring District Council has introduced Cliff Grading. This is a process which makes the cliff gradient lesser therefore landslides are less likely to occur. This is quite successful as there is no recent evidence of landslides occurring. Groynes Groynes have been put in place to stop the occurrence of longshore drift. These are planks of wood joined together to make a barrier, which stops sand from piling up at one end of the beach. We can tell that this is successful by measuring the difference in height of the sand either side of the groyne. The condition of these groynes are poor they need replacing as planks of wood have fallen down. Sea Wall A Sea Wall has been built all the way along this stretch of the coastline. This stops the waves from getting at the cliff and stops erosion. It makes this possible by having different parts at different heights. This is successful as there is no erosion to the cliff at this point. The condition of this is good, but has cracks, which could lead to water freezing within the cracks and causing the cracks to expand. But this is a very expensive sea defence and would be difficult to replace. Breakwater One Breakwater has been assembled at the far north of all these sea defences. This is what absorbs the most energy out of the waves and is the biggest obstacle. It consists of a sturdy wooden triangle with rocks in the middle to absorb the energy. It is very successful but some of the rocks within the breakwater are eroding this would suggest that these have been here quite along time. 1 ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Coastal Landforms 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 AS and A Level Coastal Landforms essays

  1. Walton on the naze coursework

    Gabion like structure under the wooden frame. Built Conclusion The two rocks that I have mentioned and explained above are two pivotal factors in terms of geology, for the cause of such an alarming rate of erosion on the North beach.

  2. "An investigation into the methods of coastal management along Brighton's Coastline and the reasons ...

    Our intentions were to find out which side of the beach was more sheltered - the east or the west. The beach profiles had the purpose of being basic reports of the physical properties of the beach. This could then perhaps be used in combination with the groyne measurements for a more detailed nearby into Brighton and its coast.

  1. An investigation into how beach material varies in shape and size up the beach.

    By taking results at different times of the year, I could have found that my results differed dramatically, which would have effected my conclusion. For instance, in the Winter I could have found that the pebbles could have been rounder as there could have been higher tides and more storms resulting in more pebbles becoming more rounded.

  2. Investigate changes in beach characteristics with increasing distance along the shore, Walton on the ...

    South East England Scale- 1:50000 Regional Map This is the view of South East England. This is regional map and its scale is 1:50000. The function of this map to my coursework is that it shows all the towns of Essex and places around which shows the shape of sea against the South East England.

  1. Coastal Processes

    In the South where rocks are parallel to the sea, there is a concordant, with cliffs formed by the resistant band of limestone. Waves crashing into the coast exert considerable force. Researchers estimate pressures upwards of 30 tonnes per square metre can occur.

  2. Free essay

    With reference to case studies, explain how sea level change influences coastal processes.

    When the ice age finished, the area was flooded. Sea level has changed the landform as if the sea level did not rise, it would be dry land. However, this may change as the continental shelf is beginning to move upwards again. Poole Harbour has been significantly affected by the rise in sea level.

  1. A case study on coastal erosion and how people have tried to stop this ...

    One way to stop it is to use Groynes. Groynes are low walls built out into the sea, usually at right angles to the coastline they help break the power of incoming waves by refracting the waves this I because the Groynes act like headlands. They also slow down the longshore drift process.

  2. Investigate the effects of costal processes on Porlock Bay in Somerset and also to ...

    The bay is normally formed when a previous cliff has collapsed. The diagram below shows the different features of costal erosion and bays - Features of Deposition Two main landforms created from deposition are beaches and splits. Beaches are formed where waves have transported and deposited eroded material from the sea.

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