Birkeland currents and charged particles in the high-latitude prenoon region - A new interpretation

Details Birkeland currents and charged particles in the high-latitude prenoon region - A new interpretation Birkeland currents and charged particles in the high-latitude prenoon region - A new interpretation

Sep 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jgr....93.9791b&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 93, Sept. 1, 1988, p. 9791-9803. USAF-DNA-NSF-Navy-supported research.

Physics

59

Birkeland Currents, Charged Particles, Ionospheric Currents, Magnetopause, Plasma Dynamics, Polar Regions, Ampte (Satellites), Dmsp Satellites, Imp, Interplanetary Magnetic Fields, Northern Hemisphere

Scientific paper

The relationship between Birkeland currents and charged particles in the ionosphere was investigated for the period between the late morning through early afternoon, using data on simultaneous conjugate measurements of magnetic fields and charged particles at low altitude in the high-latitude prenoon sector, acquired on November 1, 1984 by four spacecraft, IMP 8, AMPTE CCE, DMSP F7, and HILAT. The results of these observations indicate that, for both northward and southward IMF, the traditional 'cusp Birkeland currents' lie poleward of the most intense sheathlike particle precipitation, and it is likely that these currents map to the plasma mantle and are associated with divergent flow of ionospheric plasma near noon. It is suggested that the traditional 'cusp' current system might be more appropriately named the 'mantle' Birkeland current system.

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