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To Test if Longshore drift is taking place along Deal Beach on the Day of our visit and if so in which direction the Longshore Drift is taking place.

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Karl Bowers 11Bu Friday 25th June 2004 Aim 2- To Test if Longshore drift is taking place along Deal Beach on the Day of our visit and if so in which direction the Longshore Drift is taking place. Aim 2a For this aim, we measured the wave angle. To do this, I laid a protractor on the floor, and watched for about 5 minutes in which direction the waves were travelling. I would look down on the protractor, and note down the angle of the waves. I then worked out the average angle. We had to do measure the wave angle because it would show us in which direction the longshore drift (if any) was taking place, therefore resulting back to the title of the aim. Aim 2b Weather Data: Wave Angle = 150� Wave Direction = South East Wind: Time Wind Speed (mph) Wind Direction 10:45am 6.3 South East 10:50am 6.1 South East 10:55am 5.8 South East 11:00am 6.7 South East 11:05am 6.6 South East 11:10am 6.6 South East 11:15am 6.8 South East On the day of the visit, the weather conditions were probably the worst conditions of the week. There was rain early on in the morning and when we arrived, so we had to wait in the minibus for the rain to stop. ...read more.


Prevailing westerly winds cause the drift from the west to east along the Channel coast and south to north along the west coast. The east coast is protected by land from the prevailing south-westerly winds. However, winds from the north cause longshore drift movement from north to south on the east coast. Northerly winds (winds from the north) have crossed a long stretch of open sea so that, although they do not blow as frequently as the westerly winds, they have the greatest influence overall. Longshore drift is important in the formation of all landforms of coastal deposition. Methodology First we measured any longshore drift taking place on the surface of the water by floating a piece of driftwood in the sea surface. We put a ranging pole beside the water's edge at the point opposite where we threw our floating piece of wood (about 30cm x 30cm x 3cm) into the sea. The wood wasn't too high because then it sticks out of the water and would be caught by the wind. Wind aiding the movement of the wood would not be a true reflection of surface longshore drift. After each minute we plotted the distance it had travelled along the shore in the sea by using measuring tape from the ranging pole along the beach. ...read more.


5 7 10 12 15 16 20 25 25 29 30 36 Analyse By looking at all the results I collected for wind speed, it is clear to see that there was an average of about 6.4. As we were by the pier, I had to use somebody else's results, for the surface and seabed longshore drift. For the seabed longshore drift (pebbles) there is a clear increase of about 7 or 8 cm every 5 minutes. The results for the surface longshore drift show a much wider range of results. Conclusion I can conclude from my results that it is clear to see that longshore drift is taking place and we did manage to find the direction of the wind and the longshore drift. The wind was affective on the day of our visit, because it did direct the waves in the same direction of itself, as the results of the wind and wave direction showed. Relation to hypothesis After concluding my results, I found that on the day of our visit, longshore drift was taking place, and the direction of which was south easterly. My hypothesis is 'to see if Deal is being shaped more due to the process of L.D (if we found L.D present on our visit) or by human activity on the beach'. My results do show that the beach is being shaped by longshore drift because longshore drift was taking place on the day of our visit. ...read more.

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