Saturation effects of auroral-electrojet turbulence

Details Saturation effects of auroral-electrojet turbulence Saturation effects of auroral-electrojet turbulence

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988ge%26ae..28..923k&link_type=abstract

Geomagnetizm i Aeronomiia (ISSN 0016-7940), vol. 28, Nov.-Dec. 1988, p. 923-927. In Russian.

Physics

Atmospheric Turbulence, Auroral Electrojets, Turbulence Effects, Amplitudes, Ionospheric Electron Density, Phase Velocity, Signal Analysis

Scientific paper

It is shown that the amplitude of turbulence fluctations of the electron density of the auroral electrojet amounts to about 3 percent, and changes only slightly with increasing electric field from 30 to 75 mV/m. The observed amplitude saturation effect, as well as the phase-velocity saturation of auroral irregularities, is analyzed in the framework of mechanisms for the excitation and nonlinear limitation of the turbulence level. Farley-Bunemman instability theory with allowance for three-wave interaction and anomalous transverse diffusion shows the best agreement with experimental data.

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