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- W2625506130 abstract "Marine hydrokinetic (MHK) devices provide an alternate energy source from tidal, current, and wave motion; however, these devices introduce anthropogenic noise in the marine ecosystem and must meet regulatory guidelines. Paracousti is a 3D finite-difference, time-domain solution to the governing velocity-pressure equations and is used to predict the propagation of sound from an array of MHK sources in any environment. This solution allows for multiple sources, each with unique sound profiles, and for spatially varying sound speeds, bathymetry, and soil composition. However, fluctuations in the hydrodynamic field will introduce operational uncertainties for the sound profiles of the MHK devices, which may not be captured through idealized sound profiles. Preliminary results for a single device in a Pekeris waveguide indicate differences in broadband sound pressure levels of 25 and 60 dB re 1μPa for peak amplitudes and frequencies of 1-20 m, 150 Hz and 1 m, 50-300 Hz, respectively. A Monte Carlo approach is presented for an array of sources to further characterize the range of uncertainties associated with variations in source amplitude and frequency. It is demonstrated that the idealized, deterministic solution, vastly underestimates the compounding uncertainty on the final sound field." @default.
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- W2625506130 date "2017-05-01" @default.
- W2625506130 modified "2023-10-17" @default.
- W2625506130 title "An uncertainty analysis of propagated sound from an array of marine hydrokinetic devices" @default.
- W2625506130 doi "https://doi.org/10.1121/1.4988868" @default.
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