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Open Access

Sq and sfe currents at equatorial stations along the western and eastern African sectors

Earth, Planets and Space200658:BF03352646

https://doi.org/10.1186/BF03352646

Received: 26 December 2005

Accepted: 6 July 2006

Published: 25 December 2006

Abstract

The paper describes the daily variations in the Sq and sfe induced ionospheric current at the equatorial stations of Addis-Ababa (Inclination: 1.0°; Declination: 1.5°) and M’Bour (Inclination: 9.0°; Declination: −9.3°). At Addis-Ababa, the diurnal SqH loop as well as sfe H currents aligned fairly well with the direction of declination. At M’Bour, the SqH as well as the sfe H vector were along the direction of about 30°W. Thus, in the region of an abnormally large declination at equatorial stations, the daily Sq current does not follow a direction normal to the declination.

Key words

Solar flare currentsmeridional ionospheric currents

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