Resonances in Acoustic Bottom Reflection and Their Relation to the Ocean Bottom Properties.

Abstract

We have initiated a program to study the resonances in the acoustic reflection coefficient of a layered ocean bottom, patterned after the resonances of sound reflection from fluid or elastic layers. Computer programs have been written for obtaining the reflection coefficient from multilayered fluid or elastic media, with constant or linearly depth-dependent sound velocities in each layer. Resonances are evident in the reflection coefficient both as functions of frequency and of angle of incidence, and are shown to depend on the properties of the layered ocean bottom. Results will be presented in the form of three-dimensional graphs. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jan 14, 1981
Accession Number
ADA094147

Entities

People

  • A. Nagl
  • H. Ueberall
  • W. R. Hoover

Organizations

  • The Catholic University of America

Tags

Communities of Interest

  • Advanced Electronics
  • C4I
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Acoustic Propagation
  • Acoustic Signals
  • Acoustics
  • Angle Of Incidence
  • Coefficients
  • Computer Programs
  • Frequency
  • Geometry
  • Grazing Angles
  • Inverse Scattering
  • Measurement
  • Physics
  • Reflection
  • Resonance
  • Seabed
  • Secondary Waves
  • Waves

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Oceanography.