Underwater acoustic noise generation and propagation resulting from pile driving for Oregon bridge construction.
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2014-06-01
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Abstract:There is growing concern about noise levels from pile driving activities associated with the
construction of highway bridges and other in-water structures. It has been demonstrated that noise
generated from pile driving with an impact hammer can be harmful to aquatic species protected by the
state and federal Endangered Species Act (ESA). To comply with current environmental regulations
and noise level attenuation criteria, ODOT needs to develop hydro-acoustic monitoring protocol and
predictive models so projects can develop appropriate sound attenuation strategies based on site
specific conditions.
This research project addresses several concerns related to hydro-acoustic impacts and will ultimately
help highway projects stay in compliance with established noise level criteria. The research project
included: 1) identification of sound generation mechanisms from pile driving and how sound
propagates into the surrounding underwater environment, 2) development of an acoustic monitoring
procedure and predictive model that will help assure compliance and 3) validation and verification of
predictive models.
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