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Equatorial electrojet in the East Brazil anomaly region
Earth, Planets and Space volume 59, pages 103–106 (2007)
An Erratum to this article was published on 25 June 2014
Abstract
An examination of the geomagnetic field variations at equatorial stations in South America has shown that the daily range of the northward field, H, is about 30% larger in Peru than in Brazil. The midday H field vector in Brazil shows a large westward tilt, corresponding to large westward declination at the station. A significant meridional trans-equatorial current system is suggested for the observed anomaly. The longitudinal variation in the equatorial electrojet current strength is suggested to be due to the corresponding variation in the ionospheric electric field rather than to the electrical conductivity.
References
Appleton, E. V., Two anomalies in the ionosphere, Nature, 157, 691, 1946.
Baker W. G. and D. F. Martyn, Electric currents in the ionosphere, Philos. Trans. Roy. Soc. London, Ser. A. 246, 281–294, 1953.
Chapman, S., The equatorial electrojet as detected from the abnormal electric current distribution above Huancayo, Peru and elsewhere, Arch. Meterol. Geophys. Bioklimatol., A4, 368–390, 1951.
Cowling, T. G. and R. Borger, Electrical conductivity of the ionospheric D region, Nature, 162, 143, 1948.
Rastogi, R. G., The diurnal development of the anomalous equatorial belt in the F2 region of the ionosphere, J. Geophys. Res., 64, 727–732, 1959.
Rastogi, R. G., The morphology of lunar semi-diurnal variation in foF2 near solar noon, J. Atmos. Terr. Phys., 22, 290–297, 1961.
Rastogi, R. G., Enhancement of the lunar tide in the noon critical frequency of the F2 layer over the magnetic equator, J. Res. (NBS), 66D, 601–606, 1962a.
Rastogi, R. G., Longitudinal variation in the equatorial electrojet, J. Atmos. Terres. Phys., 24, 1031–1040, 1962b.
Rastogi R. G., Geomagnetic field variations at low latitudes and ionospheric electric fields, J. Atmos. Terres. Phys., 55, 1375–1381, 1993.
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An erratum to this article is available at http://dx.doi.org/10.1186/BF03353112.
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Rastogi, R.G., Yumoto, K. Equatorial electrojet in the East Brazil anomaly region. Earth Planet Sp 59, 103–106 (2007). https://doi.org/10.1186/BF03352682
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DOI: https://doi.org/10.1186/BF03352682