Low-Frequency, Bottom-Interacting Pulse Propagation in Range-Dependent Oceans

Abstract

An asymptotic-numerical model for low-frequency, bottom-interacting pulse propagation in the ocean is derived. The model works in the time domain using an approach analogous to the parabolic equation method that is commonly used in the frequency domain. The model handles depth and range variations in the speed of sound, density, and attenuation. The attenuation is assumed to depend linearly on frequency in the sediment. The accuracy of the model is demonstrated with a benchmark. Keywords: Reprints; Parabolic pulse; Attenuation; Density.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1988
Accession Number
ADA204975

Entities

People

  • Michael D. Collins

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustics
  • Classification
  • Differential Equations
  • Engineering
  • Equations
  • Frequency
  • Frequency Domain
  • New York
  • Partial Differential Equations
  • Refraction
  • Seabed
  • Security
  • Three Dimensional
  • Time Domain
  • Wave Equations
  • Waves
  • Wide Angles

Readers

  • Acoustical Oceanography.
  • Statistical inference.
  • Wave Propagation and Nonlinear Chaotic Dynamics.