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Polar Region Sq

  • Chapter
Quiet Daily Geomagnetic Fields

Part of the book series: Pageoph Topical Volumes ((PTV))

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Abstract

Geomagnetically quiet day variations in the polar region are reviewed with respect to geomagnetic field variation, ionospheric plasma convection, electric field and current. Persistently existing field-aligned currents are the main source of the polar region Sq. Consequently, the morphology and variability of the polar region Sq largely depend upon both field-aligned currents and ionospheric conductivity. Since field-aligned currents are the major linkage between the ionosphere and the magnetosphere, the latter is controlled by solar wind state, in particular, the interplanetary magnetic field, the polar region Sq exhibits remarkable IMF dependence.

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Authors and Affiliations

  1. Institute of Geophysics, Academia Sinica, P.O. Box 928, Beijing, China

    Wen-Yao Xu

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  1. Wen-Yao Xu
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  1. United States Department of the Interior Geological Survey, Mailstop 968, Federal Center Box 25046, Denver, CO, 80225, USA

    Wallace H. Campbell

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© 1989 Birkhäuser Verlag, Basel

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Xu, WY. (1989). Polar Region Sq . In: Campbell, W.H. (eds) Quiet Daily Geomagnetic Fields. Pageoph Topical Volumes. Birkhäuser Basel. https://doi.org/10.1007/978-3-0348-9280-3_5

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  • DOI: https://doi.org/10.1007/978-3-0348-9280-3_5

  • Publisher Name: Birkhäuser Basel

  • Print ISBN: 978-3-7643-2338-7

  • Online ISBN: 978-3-0348-9280-3

  • eBook Packages: Springer Book Archive

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