High-altitude observations of an intense inverted V event

Details High-altitude observations of an intense inverted V event High-altitude observations of an intense inverted V event

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....89.7423h&link_type=abstract

Journal of Geophysical Research (ISSN 0184-0227), vol. 89, Sept. 1, 1984, p. 7423-7430. Previously announced in STAR as N84-1067

Physics

25

Auroras, Geomagnetism, Magnetohydrodynamics, Earth Magnetosphere, Electric Fields, Field Aligned Currents, High Altitude, Plasma Waves, Solar Power Satellites

Scientific paper

Inverted-V events which generally occur in the pre-midnight sector over the auroral zone are frequently associated with reversals in the convection electric field. Such a reversal is observed by the University of Iowa quasispherical LEPEDEA on board ISEE 1 at an altitude of 13 RE on May 1, 1978. The bulk of the plasma shows a large shear over a five-minute interval. The associated change in the convection electric field is 5.1 mV/m. Large values of the field-aligned current are simultaneously detected. The potential structure appears to extend to the satellite location. Using a theoretical model, the field-aligned current due to the electric field discontinuity has been calculated. The magnitude of the parallel potential drop and width of the inverted-V region agree well with observation.

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