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The managed section of the beach will be affected more than the unmanaged section from longshore drift and thus cause coastal erosion

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Introduction

Purpose of Enquiry H1: The managed section of the beach will be affected more than the unmanaged section from longshore drift and thus cause coastal erosion. My intentions are to carry out an investigation, which will determine the affects of longshore drift. The area under study will be Reculver coastline. It is an area situated on the North Kent Coast. The investigation itself will be broken into two different parts, these being the affect of longshore drift on a managed section which has groynes to trap sediment with an area of rip-rap to break the force of waves, thus forming a protective beach. I will also conduct an investigation on an unmanaged section where the coastline is under threat by natural erosion. My group and myself will assess these areas before continuing with any data collection, when we had discovered a managed and unmanaged section; it seemed a perfect environment to compare the affects of longshore drift between the two areas. These two areas as shown on the map are separated by boulders (called rip-rap). However, these two stretches of coastline either side or the rip-rap are close enough together so that there is little change in sea conditions, wind speed and direction. ...read more.

Middle

Advantages? * It collects a wide range of views from different opinions. * The results can be moulded into different forms of representations of data. Disadvantages? * Some people may refuse to or do not have the time to answer the questionnaires; some may not be sure and may guess the answer, creating a bias. * If not enough samples are asked, it can lead to worse results. Where? I will take samples on the pavilion, pier, seafront and in the town centre. Sediment Size Analysis Equipment? Ruler, record sheet and pebbles Method? * Measure the diameter of 10 pebbles with the ruler. * Measure the diameters of the pebbles at intervals of 1m from the sea wall until you reach the sea. Record these results. * Calculate the mean diameter of the pebbles. Why is it necessary? This is to find out if attrition is affected by longshore drift. Advantages? * This method is easy to accomplish. * It portrays results to show which part of the area under observation (the unmanaged or the managed section) is affected the most by longshore drift. Disadvantages? * Pebble sizes can differ on certain specific areas of beach. * There is only a small sample size, which means that the result may not be as reliable if the sample size was bigger. ...read more.

Conclusion

Why is it necessary? By carrying out this investigation, I can see to what extent sediment build up is occurring and link my conclusions to longshore drift. Advantages? * It shows how the beach differentiates in slow gradient. Disadvantages? * The method is very time consuming * The angle of negative or positive elevation may contain an error of judgement. * There is also factor of the large scale of the beach to the small scale of the testing area. * Beach replenish schemes would affect sediment levels and change slope gradients. Where? This assessment will be carried out on both sides of the groyne in a managed environment and in unmanaged coastline (the other side of the rip-rap. External Research (Desk Research) Equipment? No vital equipment needed apart from a research area such as library. Method? * Study the existing information and facts that apply to coastal erosion and its affects. Why is it necessary? Provides secondary data, which can be interpreted and linked to field research to develop answers to key questions. Advantages? * Information and results already exist. * Secondary data is necessary to the success of the project as it provides an alternate source of information. Disadvantages? * The information that will be collected may not be specific t my study. * The information that is collected may be very old and unreliable to the present day. Where? Herne Bay Library ...read more.

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