Magnetic storm-related energetic electrons and magnetospheric electric fields penetrating into the low-latitude magnetosphere (L = 1.5)

Details Magnetic storm-related energetic electrons and magnetospheric electric fields penetrating into the low-latitude magnetosphere (L = 1.5) Magnetic storm-related energetic electrons and magnetospheric electric fields penetrating into the low-latitude magnetosphere (L = 1.5)

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990p%26ss...38.1051t&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 38, Aug. 1990, p. 1051-1059.

Computer Science

1

Electric Fields, Magnetic Storms, Magnetospheric Electron Density, Noaa Satellites, Electron Cyclotron Heating, Radiation Belts, Tropical Regions

Scientific paper

Energetic electrons measured by the NOAA-6 satellite are compared with LF whistler-mode signals transmitted from a Decca station (Biei, L = 1.54, fc = 85.725 kHz), Japan, and measured in the magnetic conjugate area, Australia. The simultaneous satellite measurement of energetic electrons indicated the considerable enhancement of energetic electron fluxes more than 30 keV in the low L-shell region below 2 at the maximum depression phase of Dst, and the subsequent abundant fluxes of trapped electrons more than 30 keV on 1 day and occasionally 2 days after the maximum phase. Associated with magnetic disturbances, the LF whistler-mode signals were intensified. However, the intensity increase of the signals was not so large at the maximum phase, which may be attributable to an ineffective wave growth caused by a rather isotropic pitch angle distribution of energetic electrons. The intensity increase was the largest one day after the maximum phase, due to the wave growth caused by cyclotron resonance interactions with trapped electrons.

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