Damping of geomagnetic Pc3-4 pulsations at high F2-layer electron concentrations

Details Damping of geomagnetic Pc3-4 pulsations at high F2-layer electron concentrations Damping of geomagnetic Pc3-4 pulsations at high F2-layer electron concentrations

Mar 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jatp...48..231v&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 48, March 1986, p. 231-243. Research supported by the Magy

Physics

10

Damping, F 2 Region, Geomagnetic Micropulsations, Ionospheric Electron Density, Solar Terrestrial Interactions, Annual Variations, Diurnal Variations, Midlatitude Atmosphere, Northern Hemisphere, Solar Wind Velocity, Southern Hemisphere, Vertical Distribution

Scientific paper

Analysis of Pc3-4 pulsations recorded over two years at a mid-latitude site in the Northern and Southern Hemispheres shows that this activity bears an anticorrelation to increases in F-region electron concentration, being significantly diminished when foF2max exceeds some critical value, and during winter months. A smaller yearly minimum in activity is also indicated. There is a strong similarity to the F-region annual and winter anomalies. However, the likely source region of this damping lies above the F-peak, in the plasmasphere.

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