Abstract
We shall discuss in the next two chapters the second generator of electromagnetic energy in the atmosphere: the ionospheric dynamo. The dynamo coil is the electrically conducting air within the dynamo region between about 80 and 200 km height. The driving force is the tidal wind which moves the ionospheric plasma against the geomagnetic field and induces electric fields and currents. Manifestations of the electric currents on the ground are regular variations of the geomagnetic field depending on solar day (Sq = solar quiet) and lunar day (L = lunar), respectively. In this chaper, we review the observations. In the next chapter, we deal with the so-called dynamo theory of the Sq current.
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© 1984 Springer-Verlag Berlin Heidelberg
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Volland, H. (1984). Electric Sq and L Currents. In: Atmospheric Electrodynamics. Physics and Chemistry in Space, vol 11. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-69813-2_8
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DOI: https://doi.org/10.1007/978-3-642-69813-2_8
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-69815-6
Online ISBN: 978-3-642-69813-2
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