Arrival Structure of Long-Range Propagation Excited by a Finite Amplitude Source

Abstract

We have studied the group and phase speed structure of long-range acoustic arrivals using linear acoustics. Here we present a preliminary study of some of these same paths but now we consider a higher amplitude source necessitating a nonlinear acoustic treatment. This research involves the eventual coupling of the Nonlinear Progressive Wave Equation (NPE) with an Adiabatic Normal Mode (ANM) Model. We use the ANM model (which has limited range-dependent capability) because our previous treatment for the linear problem was very revealing with respect to the physics of the arrival structure.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2001
Accession Number
ADA529618

Entities

People

  • B. E. Mcdonald
  • G. L. Spain
  • W. A. Kuperman

Organizations

  • University of California, San Diego

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Abstracts
  • Acoustic Phenomena
  • Acoustic Propagation
  • Acoustic Tomography
  • Acoustics
  • Amplitude
  • Convergence Zones (Sonar)
  • Deep Water
  • Environment
  • Equations
  • Frequency
  • Intensity
  • Monitoring
  • Shallow Water
  • Water
  • Wave Equations
  • Waveguides

Fields of Study

  • Physics

Readers

  • Systems Analysis and Design
  • Wave Propagation and Nonlinear Chaotic Dynamics.