Greece's major port, Piraeus, is one of the most significant ports in Eastern Mediterranean Sea. It is the largest passenger port (serving 20 million passengers per year) and among the ten largest commercial ports in Europe. The noise level from the continuous operation of Piraeus port is heavy. The noise levels affecting the nearby urban area become heavier due to the traffic noise being produced by the main road that serves the highly populated area at the outskirts of the port. In this paper, our purpose is to discriminate the noise being produced inside the geographical boundaries of the port from the outside public noise sources, based on real data. For this purpose, real traffic data have been collected, all the different sources of noise have been detected and an extended number of sound level measurements have been held and analyzed. Finally, GIS-based noise mapping, based on our real data, was performed to decorrelate the noise that is due to the port's operation from the noise that is irrelevant to port's activity. As a conclusion, it is defined how the port affects the noise pollution at the nearby urban area.
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