Coastal region and small island papers 19 |
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3 |
Background The first and most important activity is to develop a general picture of the beach and gather as much information as possible based on simple observations. No special equipment is needed for this activity. |
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Observe the beach and make a map |
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Encourage the students to make detailed
observations, e.g. instead of recording three trees, encourage them to
try and identify the trees, e.g. two palm trees and one sea grape tree. |
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Draw a map of the beach |
Make a sketch map of the beach; this can be done as a class exercise, or each student or group can make their own map. An example of a sketch map is shown in Figure 2. You may wish to prepare a simple map outline on which students can record their observations, or even a copy of a topographic map, see Figure 3. The advantage of such a topographic map is that it is accurate, so the scale can be used to determine distances. Such maps can be enlarged using a copying machine (although remember to also enlarge the graphical scale). | |||||
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Discuss the map with the class. The map can become the starting point for deciding which characteristics to monitor and where to measure them. |
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Activity 3.2 | How the beach used to look | |||||
Having drawn your sketch map of how the beach looks now, it is often useful to research information on how the beach used to look in the past. |
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Examine the topographic map of your beach |
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Topographic maps may be available in your local library, or at a bookseller, or government department responsible for lands and surveys. Look at the key to the map to find out when it was made. Compare the map with your present day sketch map and note any changes. |
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Look at the aerial photographs of your beach |
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Aerial photographs are usually kept at government departments responsible for lands and surveys, and sometimes at planning and environmental agencies. Aerial photographs are taken from a plane looking vertically downwards. They show a bird’s eye view looking down at the beach from a height. You may be able to find aerial photographs of the beach taken in the 1960s or 1970s. Aerial photographs, like topographic maps, can be used quantitatively to determine the length, width and size of the beach. Compare the aerial photographs with your present day sketch map and note any changes. |
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Examine ordinary photographs of the beach and talk to local people who knew the beach from years back |
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Ordinary photographs also show how the beach used to be in the past. Sometimes postcards also show views of particular beaches. Another useful source of information is to talk to people who have lived by the particular beach for many years or have visited it regularly over a period of several years. |
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Discuss how the beach used to be in the past and might be in the future |
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