Further Examination of a New Empirical Model for Predicting Underwater Noise due to Pile Driving
Publication: Geo-Congress 2024
ABSTRACT
There has been a growing concern in recent years about the effects of anthropogenic noise due to pile driving on underwater wildlife. In recent years, investigators have collected several datasets of noise levels during pile driving from sites throughout the state of Florida using a unique buoy-mounted instrumentation system first presented at Geo-Congress 2020. At Geo-Congress 2023, an empirical model was presented that appears to be a solution for predicting underwater noise during pile driving where pile driving is presented as a function of drive-type (i.e., impact vs. vibrational drive) and pile-type (i.e., steel vs. concrete). This new model implied that sound attenuation is more dependent upon source level and geometric conditions than environmental energy spreading. However, the model had not yet been validated, it was unclear if the model could be applied universally or was specific to Florida geotechnical conditions, and it was unclear how universal the source-level effects were on attenuation. During this study, a blow-by-blow analysis was conducted using computational fluid mechanics and field data to help answer these questions.
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Geo-Congress 2024
Pages: 215 - 224
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Published online: Feb 22, 2024
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