A Standard Definition for Wind-Generated, Low-Frequency Ambient Noise Source Levels

Abstract

Low-frequency, wind-generated ambient noise source levels are important input parameters for newly developed ambient noise prediction models such as DUNES. However, there has been a significant variation among recently reported source levels. An analysis is made of these values. Although the actual noise measurements, the assumed source model, and a small angle approximation are similar for all papers; differences arise due to additional geometrical factors or a further approximation to shift the source level to the surface. A standard source level definition and an evaluation method are proposed. Standard values of low-frequency, wind-generated source levels are presented based on this strategy. Keywords: Low-frequency ambient noise, Mathematical prediction, Mathematical models, Acoustic data standardization, Underwater acoustics, Ambient noise source levels.

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Document Details

Document Type
Technical Report
Publication Date
Feb 09, 1989
Accession Number
ADA205758

Entities

People

  • David Browning
  • Douglas J. Kewley
  • William A. Von Winkle
  • William M. Carey

Organizations

  • Naval Underwater Systems Center

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Acoustics
  • Ambient Noise
  • Australia
  • Bibliographies
  • Classification
  • Delta Functions
  • Equations
  • Frequency
  • Measurement
  • Radiation
  • Reflection
  • Security
  • Standards
  • Wave Equations
  • Wave Functions
  • Waves

Fields of Study

  • Engineering

Readers

  • Acoustics.
  • Computational Modeling and Simulation