Coastal Erosion :: science

Coastal ErosionWith Reference to examples discuss the view that coastal wearing away is energised by human intervention as a comprise to natural processes.For numerous decades the approach to rapid coastal erosion was to variant up sea defenses, to try and slow pass or horizontal stop the erosion. Initially the attempts were purview a success, however after several(prenominal) years it was realized that the power of the sea and waves could overcome human attempts. barely could protection be a success if huge costs were passing game to be involved. Many methods around the British Isles have taken mooring in he last 50 years with many failures occurring. It is actually rare to find a coastline that shows a decrease in the lay out of erosion over many years after defenses are in place. In fact in places the defenses seem to have speeded up the erosion process. Coastal erosion is a natural process of erosion, transportation and deposition, meddlesome with this balance coul d be to blame for the rise in erosion on the coasts of some areas. Groynes have been built out to sea in many areas of the British coastline. Their aim is to trap material and thus slow down the locate of long shore drift. However, these groynes in some areas are been goddamned for the rise in erosion rates further down the coast. On the Holderness coastline in Humberside, erosion is taking place at a rate of about 2 meters per year. Along this coast there is a immobile action of long shore drift taking place, which over centuries has produced a spit to form on the southern tip of Holderness, called Spurn proposition spit. The spit is over 4km long and 100 meters wide. The majority of this coastline is glacial till, a soft fragile material, which is easily eroded. This however is not thought of as the only reason for the rapid rates of erosion. Human interference is thought to be another cause, as a result of the sea defenses roll in place. A rock groyne was built at Mappleton, to effect a wider beach. This in turn would help protect the coastline, by enchanting the wave energy. Then at Withernsea a concrete sea protect with a splash back and boulder rip-rap in front of it was created. These defenses were to cause great problems. The groyne meant that material moving down the coast by long shore drift would get stuck behind the groyne.