• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month
Page
  1. 1
    1
  2. 2
    2
  3. 3
    3
  4. 4
    4
  5. 5
    5
  6. 6
    6
  7. 7
    7
  8. 8
    8
  9. 9
    9
  10. 10
    10
  11. 11
    11
  12. 12
    12

What has been the dominant direction of longshore drift in the past along Deal beach?

Extracts from this document...

Introduction

Aim 5 Question: What has been the dominant direction of longshore drift in the past along Deal beach? Aim: To collect evidence to show what has been the dominant direction of longshore drift, in the past, along Deal beach. Theory: Longshore drift is generated by wave and current action. Water and sediment are transported in a zigzag pattern as waves and currents approach the shoreline at an angle. This zigzag pattern is the mechanism for sediment transport as the swash is immediately followed by the backwash to the ocean. This energy created from the breaking waves allows for weak currents to carry large amounts of coarse-grained sediment down the shoreline. These weak currents, known as longshore currents, carry water and sediment parallel to the shoreline toward the down drift end of the beach. Method: For this aim we split up and took up a particular position in one of five groyne boxes. Once we were in our positions we took an ice cream tub and scooped up some pebbles much like the fieldwork in aim 2. We then selected five stones at random and measured their long axis and the angularity of the stones. This was repeated in every groyne box at every position. We also recorded if the stone was a pebble, cobble, or boulder. ...read more.

Middle

Angularity Stone type 1 2 3 4 5 6 7 8 9 10 Groyne Box 3- position 1 Stone number Axis length (mm) Angularity Stone type 1 20 Sub rounded Pebble 2 21 Sub rounded Pebble 3 16 Very rounded Pebble 4 8 Rounded Pebble 5 22 Rounded Pebble 6 8 Sub rounded Pebble 7 31 Very rounded Pebble 8 33 Rounded Pebble 9 21 Sub rounded Pebble 10 5 Very rounded Pebble Groyne Box 3- position 2 Stone number Axis length (mm) Angularity Stone type 1 34 Rounded Pebble 2 30 Rounded Pebble 3 24 Sub rounded Pebble 4 35 Sub rounded Pebble 5 38 Sub rounded Pebble 6 29 Sub rounded Pebble 7 32 Rounded Pebble 8 24 Rounded Pebble 9 26 Very rounded Pebble 10 21 Sub rounded Pebble Groyne Box 3- position 3 Stone number Axis length (mm) Angularity Stone type 1 41 Sub rounded Pebble 2 35 Sub rounded Pebble 3 67 Sub angular Cobble 4 68 Rounded Cobble 5 30 Sub angular Pebble 6 42 Sub rounded Pebble 7 57 Rounded Cobble 8 41 Rounded Pebble 9 38 Sub rounded Pebble 10 39 Rounded Pebble Groyne Box 3- position 4 Stone number Axis length (mm) Angularity Stone type 1 41 Rounded Pebble 2 25 Rounded Pebble 3 32 Sub rounded Pebble 4 76 Sub rounded Cobble 5 35 Sub rounded Pebble 6 43 Rounded Pebble 7 ...read more.

Conclusion

Angularity Stone type 1 2 3 4 5 6 7 8 9 10 Limitations: There were a few limitations in this aim; firstly we did not cover much ground whilst collecting data so there might have been some important facts we missed out on and there were old and new groyne boxes which might have had differences. To get a better sample we would have to collect more data in different areas of the groyne box. Analysis: I can immediately see that there are no boulders in any of the groyne boxes and most of the stones are pebbles with a few cobbles in the mix. Most of the stones are rounded or sub rounded however, there are a few angular stones but these are quite small in number compared to the amount of rounded/sub rounded stones there are in the groyne boxes. Conclusion: I can conclude that the sea is carrying the material parallel to the shoreline and that the bigger sized material is found nearer the sea (position 3 + position 4) and the smaller material is found near the sea wall (position 1 + position 2). I can also conclude that along the groyne boxes, the beach material is more plentiful position 2 e.g. material is stacked up higher. ...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. "An investigation into the methods of coastal management along Brighton's Coastline and the reasons ...

    I think the same process was occurring in Site 2 as in Site 1. The results and the graphs show that although protection varies in paces in the east it was better guarded by the groynes. Furthermore the east again could be of grater economic value and use.

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

    conformed to my hypothesis, thus ensuring that one theory stood above them all to prove my hypothesis correct. I believe that I would have found the same theory emerging if I chose to conduct the investigation somewhere else, although it may not have appeared so clearly, as Lulworth cove is

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

    I think most pebbles are of this size because long shore drift have all transported the pebbles from Gore Point to Hulstone point. Abrasion and attrition have broken down the pebbles to this smaller size as well as making the pebbles rounder.

  2. How and why does Beach Characteristics

    Surfing breakers (high energy waves) present in the summer flatten beaches; they erode sediment from the beaches and transport it off shore forming a breakpoint bar. Surging breakers (low energy waves) present in the winter cause a transfer of sediment onshore, making the beach profile steep with prominent beach faces and berms.

  1. Free essay

    Case study: Sediment budget in direction of longshore drift on Changi beach, Singapore.

    only when transport rate changes along the shore, because of a barrier such as groin, does the beach change in a manner that can readily be detected." As such, since preliminary analysis on-site seems to support the hypothesis that beach material does in fact accumulate in the direction of longshore

  2. An experiment to see if Longshore drift will occur in direction of the prevailing ...

    A honey pot site is an area of attractive scenery, or historic interest to which tourists swarm in large numbers. This is because Lulworth Cove is a popular tourist destination and receives over 750 000 visitors per year. Most tourists visit the area because of its geology, scenery, nature, and

  1. Investigation into the Pebble Ridge at Westward Ho!

    I shall have one transect at the proximal end with an OS grid reference of approximately 434 298, on at the middle of the ridge with a grid reference of 436 302 and one at the distal end with a grid reference of 437 305.

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

    scree break off and full upon the large boulders below this happen on regular basis in winter which can most defiantly add to the erosion of these large boulders that I assume will be there. NOTE: Scree is a geographical term to describe the rock fragments which break of rocks.

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