Quantitative Evaluations of the Effects of the Seabed Sediments on the Scattering and Propagation of Low to Medium Frequency Acoustic Energy in the Shallow Oceans

Abstract

The long-term goal is to quantitatively understand the physics of propagation and scattering of low to medium frequency (20-15000 Hz) acoustic wave in shallow waters and seabed sediments. The first objective is to quantitatively understand the effects of seabed scattering mechanisms (volume fluctuation, bottom and sub-bottom roughness) on the acoustic propagation and scattering. This includes the effects of poro-elastic properties of the sediments on the propagation of acoustic waves. The secondary objective is the quantitative understanding of the spatial and temporal fluctuations (amplitude and phase coherency) of acoustic wave fields in shallow water.

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Document Details

Document Type
Technical Report
Publication Date
Sep 30, 2000
Accession Number
ADA610148

Entities

People

  • Tokuo Yamamoto

Organizations

  • Rosenstiel School of Marine, Atmospheric, and Earth Science

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Propagation
  • Acoustic Properties
  • Acoustic Signals
  • Acoustic Waves
  • Acoustics
  • Elastic Properties
  • Frequency
  • Grazing Angles
  • Measurement
  • Medium Frequency
  • Physical Properties
  • Scattering
  • Sediments
  • Shallow Water
  • Test And Evaluation
  • Water
  • Waves

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.