The negative impacts brought upon by the usage of tidal
waves do have possible solutions!
Many studies have been conducted on the movement of marine
life near tidal generators, and whether or not a high number of collisions
would occur between the animal and blade. For instance, a study was conducted
on a tidal stream generator in the East River in New York. 24 different motion
detectors were placed underwater to determine the movement of marine life
around the tidal generators. The results were promising, indicating that almost
no fish used the portion of the river where blades existed. Those that did use
that particular portion tended to avoid areas of imminent danger. This study
seemed to indicate that the generators were placed in a smart area, away from
heavy marine animal population; the fish that did swim around the area also
knew how to avoid potential hazards.
Problems presented by the production of the tidal generators
also have potential solutions. Experts suggested using sound insulators to keep
in the sound, as well as using devices to cancel acoustics that do get emitted.
Another possible mitigation technique would be to avoid sensitive areas at all,
and turn off production during peak marine life movement seasons. Similar
techniques were suggested to mitigate the electro-magnetic fields produced.
Devices can be implemented to contain the leakage of electro-magnetic fields,
as well as to limit the amount of field emitted in the first place. By using
non-toxic chemicals and coatings in and on the tidal power generator, the
chemical problem can be easily solved.
It is clear that there are options available to mitigate
potential problems presented by tidal power generator. Some of these have been
well researched, while there are still other studies that are under way to
determine even better ways to control these environmental impacts.
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Sources:
http://www.energybc.ca/profiles/tidal.html
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