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2012 Subacoustech Environmental  Ltd. Kyle Rhea Assessment of Underwater Noise

2012 Subacoustech Environmental Ltd. Kyle Rhea Assessment of Underwater Noise

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Noise

Description

An assessment of the levels of underwater noise associated with the installation and operation of tidal turbine array at the Kyle Rhea site has been carried out in order to determine the potential impact on marine species. Estimates have been made of potential impact zones around the array based on previously recorded data of similar operations. 
For all species of fish the data indicate that will be no cumulative effects between adjacent turbines. For species of marine mammal, where the impact ranges are predicted to be larger, there are likely to be some cumulative effects between the turbines. For harbour porpoise the majority of the Kyle Rhea site will be insonified by levels in excess  of 90 dB ht , resulting in a strong avoidance reaction, however in fast flowing waters such as  Kyle  Rhea, it is not uncommon for background flow noise in excess of 90 dBht  for harbour porpoises.

Report

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from Construction and Operation of the Kyle Rhea Tidal Array