Changi beach, spit

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Geography coursework

By: Nguyen Manh Hoang

From: 3.18

MAP 1 (Scale 1:4521):

Map of the spit and its neighbourhood

My following report centers on the spit near Changi village. From Map 1, we can see that this is a wide spit extended from the original beach in the East- South East. It consists of A and B and has been interfered by humans as there are lots of man-grown greeneries. Hence, I aim to address the current factors affecting this spit such as waves, winds and human interference with reference to the data collected… and also the likely changes on this spit in the future with respect to these factors. Specifically, I hypothesize that the spit will be partially extended more in the future at A, while B will experience a very slow change in gradient. These will lead to the formation of a longer inlet. In addition, people will probably build a bigger port behind the spit.

In my report, I will use methodology from my on-site records at the spit regarding the gradients, waves’ directions and frequencies on both sides, which make my report precise, as well as information from textbook and the Internet to advocate my hypothesis convincingly.

In order to measure the gradient of the spit, on each side, we set a number of wooden poles upright in regular 1m margin on a perpendicular line with the shore. After the setup, we hold a tape measure which coincides with the 1m mark of the innermost pole. Then we stretch it horizontally to the second innermost pole to see which reading it will coincide with, in order to evaluate the height difference between the 2 poles. Then we repeat the procedure for the next pairs of adjacent poles until the outermost one... Based on these differences, we can construct a drawn-to-scale profile of the spit which is useful for studying the factors affecting this spit.

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Figure 1:

Gradient of the spit

Steep or not

In order to measure the waves’ frequencies, we count the number of waves approaching each side in one minute, which is determined using a stopwatch. Then we repeat the procedure up to the 5th minute. After obtaining the results, we take 2 mean values, which are the waves’ frequencies on both sides. These values can help us deduce about the factors affecting the spit, especially artificial ones. For the waves’ directions, we drop 2 leaves on the water of each side and observe the directions the leaves move. Through these ...

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