Wave Structures in Thermospheric Density from Satellite Electrostatic Triaxial Accelerometer Measurements.

Abstract

Density data from the Satellite Electrostatic Triaxial Accelerometer (SETA) experiment were spectrally analyzed by the Maximum Entropy Method (MEM). The purpose is to make available a technique by which the occurrence of wavelike structures in thermospheric densities can be quantitatively analyzed and correlated with various geophysical conditions, including the deposition of energy at high latitudes during geomagnetically disturbed conditions. Spectra were computed for typical magnetically quiet and active days during July 1983, and the relative occurrence of spectral peaks in wavelength ranges of large-scale (hundreds to thousands of kilometers) and medium-scale (tens to hundreds of kilometers) traveling ionospheric disturbances is examined as a function of local time and latitude. Keywords: Atmospheric density, Atmospheric wave structures, Maximum entropy method, Satellite accelerometers.

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Document Details

Document Type
Technical Report
Publication Date
Jun 04, 1987
Accession Number
ADA194134

Entities

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Accelerometers
  • Air Force
  • Altitude
  • Artificial Satellites
  • Atmospheric Density
  • Classification
  • Frequency
  • Gravity Waves
  • High Latitudes
  • Ionospheric Disturbances
  • Latitude
  • Magnetic Storms
  • Massachusetts
  • Security
  • Spectra
  • United States
  • Wave Phenomena

Fields of Study

  • Physics

Readers

  • Plasma Physics / Magnetohydrodynamics
  • Space Exploration and Orbital Mechanics.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster
  • Space - Orbital Debris