Other
Scientific paper
Feb 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jgr....83..681m&link_type=abstract
Journal of Geophysical Research, vol. 83, Feb. 1, 1978, p. 681-688.
Other
6
Auroral Zones, Charged Particles, Interplanetary Magnetic Fields, Magnetic Variations, Polar Regions, Diurnal Variations, Electric Fields, Isis Satellites, Magnetic Flux, Satellite Observation
Scientific paper
Magnetic field perturbations in dawn-dusk sectors of the auroral oval and in the polar cap have been studied via the magnetometer aboard the Isis-2 satellite. The perturbations are then compared with simultaneous particle measurements and measurements of the interplanetary magnetic field. It is found that magnetic field perturbation profiles in the dawn-dusk sectors are similar to transpolar electric field profiles. This result and the concept of ionospheric line tying suggest that in the steady state the direction of magnetospheric convection (i.e., sunward or antisunward) may be directly determined from perturbation measurements. Future work will extend the measurements to other local times such as the noon sector.
Burrows J. R.
McDiarmid I. B.
Wilson David M.
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