A computational method to predict and study underwater noise due to pile driving

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چکیده

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A computational method to predict and study underwater noise due to pile driving.

A hybrid modeling approach that uses the parabolic equation (PE) with an empirical source model is presented to study and predict the underwater noise due to pile driving in shallow, inhomogeneous environments over long propagation ranges. The empirical source model uses a phased point source array to simulate the time-dependent pile source. The pile source is coupled with a broadband applicati...

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An efficient model for prediction of underwater noise due to pile driving at large ranges

Modelling the sound levels in the water column due to pile driving operations nearby and out to large distances from the pile is crucial in assessing the likely impact on marine life. Standard numerical techniques for modelling the sound radiation from mechanical structures such as the finite element (FE) and boundary element method are not well suited to predict the sound field efficiently at ...

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Measurement and Modelling of Underwater Noise from Pile Driving

Many coastal and offshore construction activities require the driving of piles into the seabed, either using impact or vibratory pile drivers. Impact pile driving produces an intense impulsive underwater noise that has been associated with fish deaths at very short range, whereas vibratory pile driving produces a lower level continuous noise. Because of the high sound levels involved, noise fro...

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Validation of dBSea, Underwater Noise Prediction Software. Pile Driving Focus

This report aims to characterise the prediction error of the different noise modelling algorithms used by the underwater noise prediction software “dBSea”. Two shallow water pile driving scenarios are presented, and the software’s prediction is matched against the measured real world data. The results of the comparison show that while you can get good results with a simple model based on spheri...

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ژورنال

عنوان ژورنال: The Journal of the Acoustical Society of America

سال: 2015

ISSN: 0001-4966

DOI: 10.1121/1.4922333