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Prediction of underwater sound levels from rain and wind. | LitMetric

Prediction of underwater sound levels from rain and wind.

J Acoust Soc Am

University of Washington, Applied Physics Laboratory, 1013 NE 40th Street, Seattle, Washington 98105-6698, USA.

Published: June 2005

AI Article Synopsis

  • * Researchers collected approximately 90 buoy-months of ocean sound data in different locations of the Tropical Pacific Ocean using Acoustic Rain Gauges, focusing on how rainfall rates and wind speeds affect sound spectra.
  • * A semi-empirical model was developed to predict ambient sound spectra (0.5-50 kHz) based on wind speed and rainfall rate, successfully tested with data from the Western Pacific Warm Pool.

Article Abstract

Wind and rain generated ambient sound from the ocean surface represents the background baseline of ocean noise. Understanding these ambient sounds under different conditions will facilitate other scientific studies. For example, measurement of the processes producing the sound, assessment of sonar performance, and helping to understand the influence of anthropogenic generated noise on marine mammals. About 90 buoy-months of ocean ambient sound data have been collected using Acoustic Rain Gauges in different open-ocean locations in the Tropical Pacific Ocean. Distinct ambient sound spectra for various rainfall rates and wind speeds are identified through a series of discrimination processes. Five divisions of the sound spectra associated with different sound generating mechanisms can be predicted using wind speed and rainfall rate as input variables. The ambient sound data collected from the Intertropical Convergence Zone are used to construct the prediction algorithms, and are tested on the data from the Western Pacific Warm Pool. This physically based semi-empirical model predicts the ambient sound spectra (0.5-50 kHz) at rainfall rates from 2-200 mm/h and wind speeds from 2 to 14 m/s.

Download full-text PDF

Source
http://dx.doi.org/10.1121/1.1910283DOI Listing

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