Dayside energetic electron precipitation over the South Pole (lambda = 75 deg)

Details Dayside energetic electron precipitation over the South Pole (lambda = 75 deg) Dayside energetic electron precipitation over the South Pole (lambda = 75 deg)

Nov 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jgr....9312941m&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 93, Nov. 1, 1988, p. 12941-12945.

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12

Antarctic Regions, Electron Precipitation, Magnetic Anomalies, Polar Caps, Auroral Zones, Balloon-Borne Instruments, Earth Magnetosphere, Electron Scattering, Southern Hemisphere

Scientific paper

On January 2 and 3, 1986, a period of low to moderate geomagnetic activity, the balloon bremsstrahlung measurements of electron precipitation made near a South Pole station detected two electron precipitation events, with characteristic energy in the range 20-200 keV on the dayside, i.e. between about 0500 and 1500 local magnetic time. One of the electron precipitation events displayed dispersion, indicating drift from a near-midnight injection; the other event showed little or no dispersion, indicating that the electrons were scattered into the loss cone close to the station. In a 1-h period before local noon, correlated pulsations in the vicinity of 3 mHz were observed in the precipitation, the magnetic field, and the electric field. The data obtained suggest that passage of the cusp or polar cap boundary into the field of view of the balloon sensors was probably seen.

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