Physics
Scientific paper
May 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....90.4434d&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 90, May 1, 1985, p. 4434-4438. Research supported by the Consejo Nacional
Physics
3
Earth Surface, Equatorial Atmosphere, Equatorial Electrojet, Induction, Ionospheric Currents, Magnetic Variations, Electrical Resistivity, Geoelectricity, Geomagnetism, Tectonics
Scientific paper
Observations of geomagnetic daily variations (GDV) at equatorial latitudes in Peru, Nigeria, and central Africa are summarized and correlated with tectonic features of the South American and African continents. The morphology of the internal and external parts of the GDV horizontal components shows a latitudinal inhomogeneity in the mean vertical distribution of the earth conductivity, which is larger at the north of the dip equator in the African zone and at the south in the Peruvian zone. The results confirm the relation between ionospheric inhomogeneities and the specific lateral discontinuities in the conductivity of the upper layers of the earth.
Duhau Silvia
Osella A. M.
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