Ice Statistics and Acoustic Scattering in the Arctic Basin.

Abstract

Acoustic propagation in the Arctic is intimately related to the structure of surface pack ice. In this paper, reflection loss and transmission loss are calculated based upon statistical models of ice roughness. Statistical models of ice ridges are introduced and techniques for estimating the roughness spectrum of ridged surfaces are developed. Next, a model for estimating the mean reflection loss is introduced. The reflection loss formulas are based on the statistical models for roughness. Transmission loss calculations using High-Angle parabolic equation (ARCHAPE) in a simulated Arctic environment are compared with data. The results demonstrate that rough surface scattering from random-depth ice keel structures can account for the observed rate of transmission loss in the Arctic. Keywords include: Acoustic Scattering, and Propagation loss.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1984
Accession Number
ADA150141

Entities

People

  • R. R. Greene

Organizations

  • Leidos

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Acoustic Propagation
  • Acoustic Reflection
  • Acoustic Scattering
  • Bessel Functions
  • Bottom Bounce
  • Data Analysis
  • High Angles
  • Oceans
  • Probability
  • Random Variables
  • Ridges
  • Scattering
  • Statistical Analysis
  • Statistics
  • Stochastic Processes
  • Transmission Loss
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Polar and Arctic Studies