Bubble Attenuation Effects in High-Frequency Surface Forward Scattering Measurements from FLIP

Abstract

Measurements of surface forward scattering loss between 20 and 50 kHz were made from the research platform FLIP in January 1992. These measurements were analyzed for residual loss (defined as the loss in excess of spreading and chemical absorption), which is attributed to bubbles and referred to as surface bubble loss (SBL). With these data, a new, semiempirical model for SBL was developed that improves upon a model currently used. SBL is a key input parameter for predicting bubble attenuation in simulations of weapon system performance in near-surface environments. Bubble attenuation, High frequency, Environmental acoustics.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1993
Accession Number
ADA271534

Entities

People

  • Peter Hans Dahl

Organizations

  • University of Washington

Tags

DTIC Thesaurus Topics

  • Absorption
  • Acoustics
  • Attenuation
  • Electromagnetic Scattering
  • Environment
  • Forward Scattering
  • Frequency
  • Losses
  • Measurement
  • Platforms
  • Residuals
  • Scattering
  • Simulations
  • Weapon Systems
  • Weapons

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Fluid Dynamics.
  • Seismology