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

hunstanton sediment

Extracts from this document...

Introduction

Cliff Profile hunstantons cliffs are vertical they are made of white lime stone the next layer down red chalk and the bottomm layer is carstone. The cliffs of hunstanton are a natural defence for the coastline. The cliffs are weatherd away by plants ,rain ,freeze thaw ,chemicly ,onion skin. the only protection a cliff gets is from is't own erosion when a part of the cliff falls from erosion the pile of boulders protectes the cliff against the sea this is called toe armour . Below is a very good image of a typical hunstanton cliff. The cliffs can retreat by two different methods they are erosion and weathering. Erosion is caused by the sea for example hydraulic action this is the brute force of the waves hitting the cliff face . Weathering is caused by many things for example tree roots push the rock apart and made the cliff weak and then all it takes is a bird to nudge that peice of rock while nesting and the cliff will fall. ...read more.

Middle

There are many ways of doing so, I will describe them. Some of them are used in Hunstanton and I will show what they do to the cliffs and beach, and the adverse affects (if there are any). Recurve sea wall The old sea walls were straight up and when waves hit it with force, the waves came over the top. The impact of waves hitting straight on the face of the concrete, was wearing it away. With a curved sea wall the energy of the wave is reflected and the wave just goes up the curve and falls (due to gravity). This stops the wave going over the wall and makes the sea wall last longer. Gabions Gabions protect the sand dunes at old Hunstanton Gabions are cages filled with rocks . When a wave hits them, its power is distributed over the rockscausing less damage to the beach . Hydraulic action and attrition can effect the efficancy over time as they may be erodied the rocks could break free from the wire cage due to high levels of salt and water in the sea this could rust and weaken the steel wire. ...read more.

Conclusion

Coastal Processes The three main costal prosesses are transportation deposition and long shore drift . Erosion erosion can take place any where along the coast wheather it is beach sediment of cliff face . Corrasion Corrasiontakes place when waves carring beach sediment pound agains the cliff face the is a bit like sand blasting paint off metal. on a rough day with a high tide the waves can launch larger peices of rock at the cliff faces such as the fallen toe armour. Attrition Attrition happens when sediment smacks in to other sediment causing the sediment to decrease in size. Hydraulic action Hydraulic action is the brute force of the wave hitting the cliff face this can take out huge masses of the cliff face . Hunstanton's cliffs are mainly limestone as this is a fairly weak rock i would expect hydraulic action to be one of the main causes of erosion . Solution (corrosion) Solution is an silent and invisible deadly eroider ,it is when a week acid is in the sea and can break down a cliff. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE 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 GCSE Physical Geography essays

  1. Geography- Whistable Coast Project

    If people had worked more systematically and not wasted time and used greater co-operation the results would have been more accurate making the quality of findings better and the final acceptance of results more accurate. But the equipment also played a big part in the let down of reliability.

  2. Cliff erosion in East Sussex - the processes, problems and solutions.

    This strategy usually cost �8,000 per 100m per annum. Hard Engineering: - this strategy is normally employed in areas that are heavily populated and are considered to have a high economic value. In addition they normally have a high impact on the landscape.

  1. Investigationg Eco-systems At Sand Dunes

    2 45 3 35 30 15 13 Heather 60 10 50 85 15 70 50 25 30 90 55 75 15 25 40 45 Moss 5 60 10 15 60 80 65 100 90 100 75 20 30 40 17 41 Lichen 10 3 5 25 4 10 15 30

  2. H Head sea defences

    Over a long period of time, the sand keeps getting deposited in the same area. This eventually grows bigger and bigger and builds up into big mounds. These dunes are a perfect place for vegetation such as Marram Grass to mature and thrive successfully.

  1. Free essay

    problem of acid rain

    lakes and reservoirs killing most of the wildlife, this includes trees plants and animal habitats Effects Of Acid Deposition Human Effects Physical Effects Buildings damaged: Major buildings including Westminster Abbey and the Houses of Parliament are being badly damaged by chemical weathering.

  2. Should the coast between Overstrand and Sheringham be protected at any cost, or should ...

    A square grid map was provided and we made references (letters) on this map to indicate what we saw. What data to collect? The data collected was related to the area, for example if it was a residential area, we would write R on the square grid or if we

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