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Coastal coursework

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Introduction

Introduction The project is about how the northeast Norfolk coastline should be managed, the coastline is suffering badly from erosion, some places are worse than others and there are a lot of sea defences put up, some of this is due to global warming, with the seas rising it will put more pressure on the cliffs, the Yorkshire coast down to the north Suffolk is mainly bolder clay so it is wearing away extremely quickly and the coast is very low lying land the combination of the two could be disasters. On the coastline around Norfolk the long shore drift travels from north to south down the coast, this happens in all the coastlines in Norfolk it's the same system around, not just little bits, the long shore drift carries different bits of materials to different beaches. There are a lot of different defences some are: sea walls, rip rap, gorgers, gabions, granite reefs. Method On the 23rd of May there was a school field trip organized and they visited the following locations: Overstrand, Mundesley, Happisburgh, sea palling and Winterton. In order to carry out these investigations we had a variety of tasks. Observing the environment closely, we made notes, which included field sketches, and also took photos. ...read more.

Middle

It all comes down to physics and geology, for this coast's sedimentary rock - if it can be called rock - was laid down barely 12000 years ago, no time at all to compact into something hard enough to resist a winter North Sea. Add in global warming with its already higher wave profiles and in the long run, the ground looks undefendable. And to some extent, defence options anyway make a circular argument. Coastal processes, which have become much better understood in the forty odd years since most of Norfolk's sea walls were built, hinge on sediment and, more particularly, how much sediment remains on the beaches. The higher the beach level, the more wave energy is absorbed before waves hit the cliffs. Which brings us to back Happisburgh. Happisburgh has or had revetments. Bits of them survive but this smallish village with landmark church and lighthouse now has cliffs which are decreasing rapidly. It began in 1990 when a storm demolished 300m of revetment running south-east from the village. Once the gap appeared, the sea got stuck into the agricultural land behind and has been gnawing away ever since, helped by another storm which later sent six village edge properties to the beach. ...read more.

Conclusion

Furthermore, along the cliff-top track which doubles back to the car park, there were, until last year, some small chalets and static caravans. They weren't all architectural gems, built in the interwar period before planning legislation was properly around, but they were gloriously sited, facing the sea in winter storm and summer sunrise. Their 20 metre cliff had been protected by revetments for decades. But once the revetments began to break up, the earth began to move. They became places where many people wouldn't spend a stormy night. Even their names, though evocative, had displayed foreboding. There was 'Oversand', now sadly under sand, and there was 'White Horses' which, ultimately, couldn't be kept away from the garden. 'Turning Tides' still hopes forlornly but 'Thalassa' is a picture of lassitude. The rest have gone. The laying down of sediment (deposition) in a low-energy environment with constructive waves. Coastal deposition occurs where there is a large supply of material from cliffs, rivers, or beaches, long shore drift, and an irregular coastline. Most beaches display a number of features of coastal deposition. The coastline is very rugged and there are lot of caravan sites which could easily go over the edge, this coastline in Happisburgh needs to be protected ...read more.

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