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Equatorial ionospheric currents derived from MAGSAT data
Author(s) -
Roy Manashi
Publication year - 1983
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl010i008p00741
Subject(s) - equatorial electrojet , ionosphere , geophysics , geology , earth's magnetic field , electrojet , current (fluid) , geodesy , equator , satellite , magnetic dip , ring current , anomaly (physics) , latitude , magnetic field , physics , astronomy , oceanography , condensed matter physics , quantum mechanics
The MAGSAT data on the three components of the geomagnetic field are subjected to ring current correction and crustal anomaly elimination near the dip equator. The evidence of a strong west east electrojet current below the satellite height (∼ 350 km) is confirmed. Strong evidence of east west component of the field suggests the existence of a vertical current originating at the jet level and extending upwards. A model calculation shows that such a current system can explain the satellite data as well as the ground data.