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Sea defences around the beaches of Cley and Cromer

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Introduction

A comparison of the characteristics and management strategies of two beaches along the North Norfolk coast; Cley-next-the-Sea and Cromer Part of our investigation will be to see if the beaches are constructive or destructive and to prove this. Constructive waves move material up the beach. On the other hand, destructive waves move the material down the beach. Cley-next-the-sea: Cley is one of the beaches we went to in North Norfolk; the beach is a managed beach, which means that the ridge is pushed up by a bulldozer every 6-12 months to protect the freshwater marsh behind the ridge. The marsh is a site of special scientific interest for birds and there fore well worth protecting, also this site is a world heritage site. Cley has a population of 600. Cley has primary industry such as fishing. Also Cley is the starting point of shingle spit. Cromer: Cromer is the most populated part of North Norfolk. It has a population of 8000.There is cliff top settlement. Cromer has many sea defences because of its weak geology. Cromer is seemed as the 'Gem of the North Norfolk Coast' Cromer is a seaside town and a nationally known place for crab fishing. ...read more.

Middle

Cromer: Distance between poles / m 0 10 10 10 10 6.55 10 10 7 1.8 7.4 Angle / degrees 0 2 1 3 4 5 7 6 12 1 3 Total distance up the beach / m 0 9.99 20 30 40 46.5 56.4 66.4 73.2 75 82.4 Total height up beach / m 0 0.35 0.52 1.05 1.74 2.32 3.53 4.58 6.03 6.07 6.45 The height of this beach is constantly increasing. The highest point of the beach is about 6.5 metres. The total length of the beach is 80 metres. The shape of the beach is that it was slight uphill, as it was 80 metres long height of 6.5 metres was not shown. The beach was concave shape so it is probably a destructive beach. Pebble Analysis We did the pebble analysis on only one of the beaches - Cley. To do this experiment we used a calliper. We did this experiment so that we can measure the size of rocks, so that we can tell what part of the beach was the most eroded. We also did this to give us an idea about the shape of the beach, whether it is a constructive or destructive beach. ...read more.

Conclusion

On one of the beaches the experiment went wrong and the water came out of the side of the apparatus. Connectively if we did another experiment we could back up the results we got, but unfortunately we couldn't as time was running out. Also, we could have done it a number of times to get an average. When we did the groyne analysis we had many problems, such as we had to use a ranging pole to measure the height of the groyne and there is a possibility that the ranging pole wasn't straight, also when we where measuring the actual height with a tape measure the tape measure might have not been straight and vertical. Also the as we got towards the end of the beach the height of the groyne was getting too high for us the students to reach. Finally, we measured the direction of long shore drift; the main inaccuracy was that throwing the orange in line with the ranging pole was extremely difficult. One of the experiments took so long that timing was inaccurate as people didn't bother. Plus it wasn't a fair test as the oranges were different; they were different size and probably different weight. All of these weaknesses of our experiments will obviously affect our results and therefore the conclusions we draw. ?? ?? ?? ?? Ridvan Sasmaz 1 ...read more.

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