Physics
Scientific paper
May 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993geoji.113..387r&link_type=abstract
Geophysical Journal International (ISSN 0956-540X), vol. 113, no. 2, p. 387-398.
Physics
8
Earth Ionosphere, Equatorial Atmosphere, Lithosphere, Magnetic Anomalies, Magsat Satellites, Data Processing, Satellite Observation
Scientific paper
The longitudinal, seasonal, and altitude-dependent variability of the magnetic field in equatorial latitudes is investigated to determine the effect of these variabilities on the isolation of lithospheric Magsat magnetic anomalies. It was found that the amplitudes of the dawn dip-latitude averages were small compared to the dusk averages, and that they were of the opposite sign. The longitudinal variation in the equatorial amplitudes of the dawn dip-latitude averages was not entirely consistent with the present knowledge of the electrojet field. Based on the results, a procedure is implemented for reducing the equatorial ionospheric effects from the Magsat data on the lithospheric component.
Hinze William J.
Ravat Dhananjay
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