Storm associated protonospheric depletion and recovery

Details Storm associated protonospheric depletion and recovery Storm associated protonospheric depletion and recovery

May 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980p%26ss...28..453k&link_type=abstract

Planetary and Space Science, vol. 28, May 1980, p. 453-458.

Computer Science

Sound

10

Depletion, Magnetic Storms, Magnetospheric Electron Density, Proton Belts, Satellite Sounding, Ats 6, Diurnal Variations, Geomagnetism, Ground Stations, Recovery, Summer, Winter

Scientific paper

The average response of the protonosphere to geomagnetic activity has been determined from measurements of protonospheric electron content, line integrals along the transmission paths from the ATS-6 geostationary satellite to several stations. The results indicate an abrupt depletion of the protonosphere starting in the dusk sector on the first day of the storm. Minimum contents are found early on the third day, with greatest absolute departures from average levels being found at the station for which the transmission path intersects the lowest L-shells, although the percentage depletion is greater where the L-shells are higher. The recovery to mean levels is achieved by about days six-eight for the stations studied, but complete refilling of the protonospheric flux tubes is not achieved unless some two weeks of quiet have elapsed before the next onset of geomagnetic activity. Recovery in the winter hemisphere is found to be faster than that in summer. The results are discussed in terms of convective movements of the plasmapause and field aligned interactions of the protonospheric plasma with the underlying ionosphere.

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