Wave Structures in Thermospheric Density from Satellite Electrostatic Triaxial Accelerometer Measurements.
AIR FORCE GEOPHYSICS LAB HANSCOM AFB MA
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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.
- Atmospheric Physics
- Test Facilities, Equipment and Methods