An Analysis of Long-Range Acoustic Propagation Fluctuations and Upper Ocean Sound Speed Variability

Abstract

The objectives of this work were both observational and theoretical. Several low-frequency and broadband long-range transmission data sets in which data was obtained on long vertical receiving arrays were analyzed to quantify acoustic phase and intensity variability, as well as temporal and vertical coherence. One short range experiment (87 km) was also examined to quantify acoustic scattering over the first 2 upper turning points. In addition, analysis of oceanographic measurements of upper ocean processes quantified acoustic scattering structures. Coupled mode, geometric (ray-based) and parabolic equation models were used to examine the underlying acoustic scattering physics.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Dec 07, 2005
Accession Number
ADA441242

Entities

People

  • John A. Colosi

Organizations

  • Woods Hole Oceanographic Institution

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Acoustic Phenomena
  • Acoustic Propagation
  • Acoustic Scattering
  • Acoustics
  • Broadband
  • Data Sets
  • Engineering
  • Equations
  • Frequency
  • Intensity
  • Internal Waves
  • Measurement
  • North Pacific Ocean
  • Oceans
  • Pacific Ocean
  • Physics
  • Scattering

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.