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

The nature of the beach is a response to the type of waves and beach material.

Extracts from this document...

Introduction

Analysis Two "The nature of the beach is a response to the type of waves and beach material." The coast is constantly changing due to the motion of the waves and sea. There are two types of waves, destructive and constructive. The shape of a beach depends on the waves acting upon it and the size of the beach particles. Destructive waves have a weak swash and therefore cause very little beach building. These waves have a strong backwash that scours the beach dragging material down the beach. These waves are high and very powerful. They generally break on the shore over ten times in a minute. Constructive waves are the opposite. ...read more.

Middle

The wave-cut platform that extends out from the beach into the sea is a factor on the profile. The waves break on the platform, and the friction caused here means a lot of the wave energy is lost thus reducing the power of the wave's backwash. It is therefore possible that destructive waves are acting upon the coast at Selwicks bay but because of the wave-cut platform, measuring 90 metres in length, the waves lose there power and appear to have a somewhat constructive effect on the beach profile. The wave count taken at Selwicks bay showed a high frequency of waves breaking on the shore at an average of 14.2 per minute. ...read more.

Conclusion

There were less than ten a minute (an average of 7.4 per minute exactly) which is one of the characteristics of such waves. The profile of the beach also correlates with the constructive wave theory. The beach has a gentle slope rarely exceeding a +5? angle. The beach material decreases in size as it gets closer to the promenade, further from the sea implying that it has been easily transported up the beach by the strong swash. The seawater is stored in the pores and spaces between the sand grains and leaves little water to form a strong backwash. Thus the water returns down the beach with little friction, as a small and weak backwash, and so pulls very little material away. Aforementioned Evidence: Transects, Pages 15 and 16 Beach Profiles, Pages 17 and 18 Wave Frequency Charts, Pages 19 and 20 ...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. To what extent do beach characteristics change with increasing distance along shore.

    After finishing with beach height, our group started to measure percolation rate and sediment size. 2 people needed for each activity. Investigation got carried on in 2 different sites of Walton coast and it was January month also each activity took 10 minutes to be completed.

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

    South America, 20% come from Europe itself, 10& come from Australia, 10& come from North America, 0% come from Asia and 20% come from another country. My discovery shows that many of the people come from UK, this could be because they live close-by and has heard of Brighton and its magnetism when it comes to 'tourism'.

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

    so if I found some Wealden clay I would expect to find it near the sea (at 5m) and expect it to be very small. The clay underwent mass movement, otherwise known as rotational slumping. There were two other major rock groups, which could be seen in the cove itself, not in the Stair hole.

  2. How and why does Beach Characteristics

    Surfing breakers cause flattened beaches; they erode sediment from beaches and transport it offshore to form a breakpoint bar. The combination of this bar and the flat beach dissipates the wave energy to create an equilibrium profile. Surging waves cause a net transfer of sediment onshore, so the beach profile becomes steep, with prominent beach face and berms.

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

    These averages showed me that the average pebble was bigger at Gore Point. This also shows that attrition is breaking fragments of pebbles. This is whilst long shore drift is transporting the pebbles from Gore Point to Hulstone Point. To tell that these pebbles have been situated at Gore Point

  2. Does the size of beach material on a beach become smaller and more rounded ...

    The pebbles that are near the shoreline have most properly broken off a cliff some time ago thus giving the sea a long time to work its powers against them, this is why the rocks near the shoreline are more rounded and smooth.

  1. How and why do the beaches vary at Barmston, Mappleton and Hornsea?

    faeces 3 4 21 16 25 Overall bi-polar quality mark 3.3 The bi-polar vision of Barmston, Mappleton and Hornsea was recorded, when we went to the three locations during our fieldtrip, onto similarly formatted sheets. Although it is not a factual source of data, this will provide me with valuable

  2. GCSE Georgraphy Coursework: Coastlines

    The winds tend to come from the north, mainly from the North Sea. During the summer, when the weather is finer, the materials are brought in. In Sheringham the purpose of sea defences are to maintain the beach for tourism.

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