Electron density behaviour at 6.6 earth radii over the geomagnetic equator during very intense storms

Details Electron density behaviour at 6.6 earth radii over the geomagnetic equator during very intense storms Electron density behaviour at 6.6 earth radii over the geomagnetic equator during very intense storms

Oct 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jatp...47.1009w&link_type=abstract

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

Physics

2

Magnetic Equator, Magnetic Storms, Magnetospheric Electron Density, Space Plasmas, Annual Variations, Cold Plasmas, Daytime, Geos 2 Satellite, Night, Plasmasphere

Scientific paper

Analyses have been made of the behavior of coldd plasma electron density at 6.6 earth radii over the geomagnetic equator during very intense magnetic storms, by using the relaxation sounder data measured on board the geostationary satellite GEOS-2 of ESA. It is found that during very intense storms a high density region appears in the afternoon sector, the width of which is generally larger than the plasmaspheric bulge. The electron density on the nightside on storm days is lower than that on quiet and moderately disturbed days, representing a negative phase storm. There are severe perturbations in electron density during intense storms, which occur just after steep changes in D(M) index and last one or two days. They appear more severe on the nightside, especially around midnight. It is pointed out that the enhancement of the magnetospheric convection and the invasion of the plasmasheet plasma into lower L regions are responsible for the foregoing phenomena.

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