Comparison of equatorial electrojet characteristics at Huancayo and Eusebio /Fortaleza/ in the South American region

Details Comparison of equatorial electrojet characteristics at Huancayo and Eusebio /Fortaleza/ in the South American region Comparison of equatorial electrojet characteristics at Huancayo and Eusebio /Fortaleza/ in the South American region

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jatp...44..785k&link_type=abstract

Journal of Atmospheric and Terrestrial Physics, vol. 44, Sept. 1982, p. 785-792. Financiadora de Estudos e Projetos

Physics

6

Diurnal Variations, Equatorial Electrojet, Geomagnetism, Magnetic Variations, Annual Variations, Harmonic Analysis, Ionospheric Currents, Magnetic Equator, South America

Scientific paper

The H, D and Z average daily variations for five international quiet days are compared for Huancayo (12 deg S, 75 deg W, dip plus 1.9 deg) and Eusebio near Fortaleza (4 deg S, 39 deg W, dip -3.5 deg) in the South American region, for the 12 successive months, October 1978-September 1979. The H range shows that the electrojet is weaker in the Fortaleza region. Also, the electrojet center has latitudinal excursions from month to month at both the locations, but not in a similar way. The D variations indicate excursions of Northern Hemisphere Sq current systems into the Southern Hemisphere (or vice versa) but in a dissimilar way at Eusebio and Huancayo. Also, significant Delta-D magnitudes are noticed even at midday, indicating the possibility of meridional currents. It seems that the overhead Sq current pattern changes in form while moving over from the Fortaleza region to the Huancayo region.

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