PROPAGATION OF ACOUSTIC-GRAVITY WAVES IN A TEMPERATURE-AND WIND-STRATIFIED ATMOSPHERE

Abstract

A theory is presented which permits the study of the effects of horizontal winds on the dispersion and amplitudes of acoustic-gravity waves in the atmosphere. It is shown that the effective horizontal group velocity for a given frequency in a given normal mode depends on direction of propagation as well as on frequency and that it is not necessarily in the same direction as the horizontal wave number vector. A number of useful integral theorems are derived from a variational principle and one is subsequently applied to the development of a perturbation method for the computation of wind effects on dispersion. Application of the method to a realistic example indicates that winds can appreciably alter the dispersion of the normal modes and that they should be considered in any quantitative interpretation of experimental microbarograms.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Aug 28, 1964
Accession Number
AD0607242

Entities

People

  • Allan D. Pierce

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • C4I
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Atmospheres
  • Differential Equations
  • Eigenvalues
  • Eigenvectors
  • Equations
  • Gravity Waves
  • Group Velocity
  • High Altitude
  • Kinetic Energy
  • Military Research
  • Perturbations
  • Self Assembly
  • Wave Propagation
  • Waveforms
  • Waves
  • Wind Velocity

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Wave Propagation and Nonlinear Chaotic Dynamics.