Published In

Journal of the Acoustical Society of America

Document Type

Article

Publication Date

7-15-2015

Subjects

Piling (Civil engineering), Acoustical engineering, Underwater noise -- Columbia River, Prediction models, Vibration (Mechanics)

Abstract

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 application of a PE wave propagation model that includes range dependent geoacoustic properties and bathymetry. Simulation results are shown to be in good agreement with several acoustic observations of pile driving in the Columbia River between Portland, OR and Vancouver, WA. The model is further applied to predict sound levels in the Columbia River and study the effects of variable bathymetry and sediment configurations on underwater sound levels.

Description

Copyright 2015 Acoustical Society of America

The following article was originally published by the Acoustical Society of America and is available at the journal web site.

This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America.

DOI

10.1121/1.4922333

Persistent Identifier

http://archives.pdx.edu/ds/psu/15735

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