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Investigate the beach characteristics and costal defences at St Dunstan's Steps.

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Introduction

Physical Fieldwork Location - Site 1: St Dunstan's Steps Aim - To investigate the beach characteristics and costal defences The first site we visited on our field trip was St Dunstan's Steps. The first task we did was a 'Particle Size and Type Analysis.' This involved selecting a random sample of pebbles and recording the average size, shape and orientation of the pebbles. To help us during this task we used a flexible tape measure, and a compass to find the direction the pebbles were facing. We also had a chart to make it easier to determine the shape of the pebbles. The results for this first task were... Average Size (cm) Average Shape Orientation Waters Edge Mid Beach Top Beach Waters Edge Mid Beach Top Beach Waters Edge Mid Beach Top Beach Site 1 9.5 12.5 7.5 Rounded Sub-Rounded Very-Rounded South Southeast East These results tell us that the majority of the wave deposited material gets deposited orientated towards the Southeast. This shows therefore that the material is more likely to have travelled to the beach from a Westerly direction. The fact that the smallest and roundest pebbles were at the top of the beach shows that they have been submitted to the most erosion. When it is high tide, as well as these pebbles eroding each other in the form of attrition, and being eroded by corrosion, they will also be eroded as the waves cause the pebbles to crash into the cliff. ...read more.

Middle

The results for this task were... Average Size (cm) Average Shape Orientation Waters Edge Mid Beach Top Beach Waters Edge Mid Beach Top Beach Waters Edge Mid Beach Top Beach Site 2 11 8 4 Rounded Rounded Rounded West Southwest West All the pebbles at this site came up as rounded on our pebble shape chart. This is because they have been transported from elsewhere and so have been eroded and affected by attrition. The results tell us that the majority of the beach material gets deposited orientated towards the West. This shows us that the material is more likely to have travelled to the beach from an Easterly direction. The smallest pebbles here were also at the top of the beach. I think this is because of the same reason as before - they have been submitted to the most erosion because when the tide was higher they would be worn away against the cliff, or sea wall. It could also be because they were brought to the top of the beach during a time when the waves were more powerful. During that time the pebbles would be being submitted to greater erosion by attrition, because the energy of the waves would cause the effect of attrition to happen faster. We performed the 'Longshore Drift Analysis' task at this site. We dropped the dog biscuit in the water. There were lots of seagulls in the water so every now and then we lost site of the dog biscuit. ...read more.

Conclusion

The first chart for the question 'What is the purpose of your visit today?' tells us that the majority of people interviewed in Brighton visit this town for the purpose of Sightseeing. The second graph for the question 'Who do you think the seafront facilities are aimed at more?' clearly shows that most people who were interviewed thought the facilities at Brighton were aimed at 'Day-trippers'. The second of our tasks was to complete a land use map along the sea front at Brighton. For this task we had to walk around Brighton and note down the types of services we saw. The areas we had to record facilities for were the Boardwalk, the Promenade and any other services along the sea front. From our map we learnt that the most common services to be found along the sea front of Brighton were entertainment and food facilities. Some of the food facilities were fast food, for example - Fish 'n' Chips, and Burger Bars. There was also a wide range of food outlets ranging from Chinese to Italian. We also found out that the majority of shops here were souvenir shops and mainly aimed at tourists, though there was also several clothing and accessory shops. From our land use map another service that we found was quite common, once you went inland past the promenade, was Hotels and other places to stay. From this evidence I would conclude that the town of Brighton is a town mainly aimed at tourists and other holidaymakers, rather than at the locals of the area. By Joanna Booth 10LM ...read more.

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