THE PEDDER BAY MARINA:
We did the same thing in the Marina as we did in the PC docks, we analsed the sample the data taken from the surface and the data taken from the 3 metres deep. Comparing the data to the distilled water.
BOTTOM WATER
- From the bottom sample, we see most of the light passing unabsorbed, though there is relatively increase in the amount absorbed compared to the distilled water as we can observe from the graph that about, 3% of violet light is being absorbed which is about 2% more than the amount distilled water absorbs.
- The trend shows that there is generally decrease in the rate of absorption as the wavelength increases.
SURFACE WATER
- This graph shows different trend from previous the other graphs. Contrary the others, relatively less violet light is being absorbed and we see the peak on the light blue light whereby it is about 2.7% which is about 2.69% rise from the level of the distilled water.
- Generally there is relatively more absorbance of light in the Marina's water surface compared to the bottom water.
The possible explanation for the large absorption of light by the surface water in the Marina can probably be due to pollution in the marina as Diana and Daniel observed. The pollution contributes to relatively higher opacity of the water in the Marina's surface water. Hence, the absorbance property of the light is mainly rised by the higher opacity of water.
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