High-latitude irregularities in the lower F region - Intensity and scale size distributions

Details High-latitude irregularities in the lower F region - Intensity and scale size distributions High-latitude irregularities in the lower F region - Intensity and scale size distributions

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....89.5575r&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 89, July 1, 1984, p. 5575-5580. Research sponsored by the U.S. Defense Nu

Physics

10

Density Distribution, F Region, Ionospheric Disturbances, Particle Flux Density, Polar Caps, Solar Terrestrial Interactions, Geomagnetism, Magnetoactivity, Size Distribution, Solar Radiation, Synoptic Measurement

Scientific paper

S3-4 satellite data on the high latitude F region at 170-200 km altitudes are used to characterize F region irregularities in terms of auroral ovals and large scale convection pattern morphologies. The data were gathered with Langmuir probes which permitted measurements of the electron densities and temperatures and plasma potentials. The shapes of the irregularities, when combined with measured intensity distributions, indicated that particle precipitation is the chief cause of the larger scale density fluctuations. Second-order effects such as plasma instabilities may be associated with gradient drift instabilities. It is suggested that ion recombinations cause the decay of the irregularities.

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