Current fluctuations in the earth's magnetosphere caused by lower-hybrid-drift turbulence

Details Current fluctuations in the earth's magnetosphere caused by lower-hybrid-drift turbulence Current fluctuations in the earth's magnetosphere caused by lower-hybrid-drift turbulence

Jan 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997adspr..19.1951m&link_type=abstract

Advances in Space Research, Volume 19, Issue 12, p. 1951-1954.

Physics

1

Scientific paper

Nonlinear calculations of the anomalous electrical conductivity in the plasma of the earth's plasma mantle, the tail plasma sheet boundary layer and the ionospheric F-region density-trough are presented provided that lower-hybrid-drift turbulence exists. It is shown that in these regions the stabilization of the wave growth is mainly caused by current relaxation. Further, the fluctuations of the electrical currents are estimated via Ampère's and Ohm's laws. It is found that the lower-hybrid-drift turbulence causes maximum anomalous collision frequencies of the order of 10^-2 Hz in the magnetosphere. The maximum current fluctuations are about 3 10^-9 A/m^2. The theoretical results are in agreement with ISEE and Prognoz-8 measurements.

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