Plasma dynamics in the night-time F-region at Arecibo

Details Plasma dynamics in the night-time F-region at Arecibo Plasma dynamics in the night-time F-region at Arecibo

Oct 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jatp...47..925b&link_type=abstract

(IUGG, IAGA, USAF, et al., International Symposium on Equatorial Aeronomy, 7th, Hong Kong, Mar. 22-29, 1984) Journal of Atmosphe

Physics

13

F Region, Ionospheric Electron Density, Night Sky, Plasma Dynamics, Radar Tracking, Annual Variations, Incoherent Scatter Radar, Puerto Rico, Vertical Distribution

Scientific paper

Incoherent scatter radar observations of the nighttime F-layer at Arecibo, PR, are used to determine horizontal gradients in peak electron density and the F-layer height. At certain times of night, in both the summer and winter, the horizontal gradients in these parameters may be significant. The continuity equation for O(+) is used to examine the sources and sinks of plasma at the peak of the nighttime F-layer. In summer, before midnight, the F-layer is sufficiently elevated that chemical recombination at the peak is very slow. At these times it is found that the local peak electron density may be significantly influenced by horizontal (predominantly eastward) advection or convergence of plasma. In winter, horizontal advection is usually less important than plasma convergence and chemical loss.

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