Observation and theory of topside ionospheric plasma inhomogeneities

Details Observation and theory of topside ionospheric plasma inhomogeneities Observation and theory of topside ionospheric plasma inhomogeneities

Jan 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998jastp..60..247g&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 60, Issue 2, p. 247-252.

Physics

7

Scientific paper

In the rocket experiment ``Vertical-10'', a spectrum analyser of plasma irregularities and a Langmuir probe were used. A large-scale plasma inhomogeneity decay into small-scale structure was observed in the nighttime topside ionosphere over a broad band of irregular sizes from some tens of metres to several hundreds of kilometres. We suppose that internal gravity wave damping at altitudes 300-500 km heats the upper ionosphere and, due to superthermal charged particle fluxes, large-scale plasma inhomogeneities can be induced. A large-scale, electrostatically unstable plasma inhomogeneity which decays into small-scale structure was observed in our experiment. The experimental results, an analytical calculation and some computations are presented for the treatment of possible mechanisms for plasma inhomogeneity generation and decay.

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