Signal masking Behaviourally-mediated effects Blasting Physical trauma Hearing loss Non-auditory health effects Behavioural change Behaviourally-mediated effects Geotechnical exploration and associated sonars Temporary Hearing loss (depth sounders, fish finders) Non-auditory health effects Signal masking Behavioural change Behaviourally-mediated effects Other Sonars (depth Signal masking sounders, fish finders) Behavioural change Behaviourally-mediated effects Underwater Behavioural change Communication Systems Behaviourally-mediated effects Renewable Power Generators (encompasses all possible systems, not all Hearing loss will generate all listed effects) Non-auditory health effects Behavioural change Signal masking Behaviourally-mediated effects Over flying aircraft Behaviourally-mediated effects (including sonic booms) A simplistic schematic diagram showing hypothetical zones of impact around a high energy underwater sound source is shown in Figure F1. This does not account for local propagation and individual hearing ability or response, and that hypothetical zones of impact may merge with or overlap one another; however, it is provided for reference. Figure F1. Schematic diagram showing hypothetical zones of impact around a high energy underwater sound source (at centre) and listing the potential effects upon a receiving animal, assuming spherical spreading. PTS = Permanent Threshold Shift; TTS = Temporary Threshold Shift, in National Parks and Wildlife Service (2014), after NRC (2005).
Signal masking Behaviourally-mediated effects Blasting Physical trauma Hearing loss Non-auditory health effects Behavioural change Behaviourally-mediated effects Geotechnical exploration and associated sonars (depth sounders, fish finders) Temporary Hearing loss Non-auditory health effects Signal masking Behavioural change Behaviourally-mediated effects Other Sonars (depth sounders, fish finders) Signal masking Behavioural change Behaviourally-mediated effects Underwater Communication Systems Behavioural change Behaviourally-mediated effects Renewable Power Generators (encompasses all possible systems, not all will generate all listed effects) Hearing loss Non-auditory health effects Behavioural change Signal masking Behaviourally-mediated effects Over flying aircraft (including sonic booms) Behaviourally-mediated effects A simplistic schematic diagram showing hypothetical zones of impact around a high energy underwater sound source is shown in Figure F1. This does not account for local propagation and individual hearing ability or response, and that hypothetical zones of impact may merge with or overlap one another; however, it is provided for reference. Figure F1. Schematic diagram showing hypothetical zones of impact around a high energy underwater sound source (at centre) and listing the potential effects upon a receiving animal, assuming spherical spreading. PTS = Permanent Threshold Shift; TTS = Temporary Threshold Shift, in National Parks and Wildlife Service (2014), after NRC (2005).
Great_Barrier_Reef_Underwater_Noise_Guidelines-Discussion_and_Options_Paper.docx