Physics
Scientific paper
Aug 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jatp...53..695k&link_type=abstract
(Equatorial aeronomy; International Symposium, 8th, San Miguel de Tucuman, Argentina, Mar. 21-27, 1990, Selected Papers. A92-138
Physics
16
Atmospheric Turbulence, Equatorial Atmosphere, Neutral Atmospheres, Spread F, Coherent Scattering, Gravity Waves, Plasma Density, Power Spectra
Scientific paper
Satellite and rocket plasma density spectra obtained during equatorial spread-F conditions are presented and compared with similar measurements in the neutral atmosphere. It is concluded that horizontal spectral measurements show a peak at an outer scale quite similar to the scale of the undulations caused by gravity wave interactions with the ionosphere. At intermediate scales the plasma fluctuations have a 1D horizontal spectrum with a power law well described by a (-5/3) slope. The vertical power spectra seem to run the gamut in spectral form with slopes varying in the range from -1 to -3. It is concluded that the horizontal spectra are near universal in form, while the vertical spectra are quite variable.
Hysell Dave L.
Kelley Michael C.
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