Temporal Fluctuation of Backscattered Field Due to Bioturbation in Marine Sediments

Abstract

Biological activity in marine sediments creates a time-varying, randomly fluctuating medium. A bio-diffusive model is proposed for predicting the temporal and spatial spectrum of sediment density fluctuations. Perturbation theory is used to model sediment volume scattering and the temporal correlation of the scattered field. These models are compared with field data recorded in a biologically active shallow water environment, and sediment blo-diffusion parameters are estimated.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1998
Accession Number
AD1114089

Entities

People

  • Christopher D. Jones
  • Darrell R. Jackson

Organizations

  • University of Washington

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Acoustic Frequencies
  • Acoustic Impedance
  • Acoustic Properties
  • Acoustic Scattering
  • Acoustics
  • Backscattering
  • Coefficients
  • Differential Equations
  • Diffusion Coefficient
  • Equations
  • Frequency
  • Models
  • Physical Properties
  • Roughness
  • Scattering
  • Seabed
  • Shallow Water

Readers

  • Coastal Oceanography
  • Computational Modeling and Simulation
  • Plasma Physics / Magnetohydrodynamics