University of Oulu

Vanhamäki H., Juusola L. (2020) Introduction to Spherical Elementary Current Systems. In: Dunlop M., Lühr H. (eds) Ionospheric Multi-Spacecraft Analysis Tools. ISSI Scientific Report Series, vol 17. Springer, Cham.

Introduction to spherical elementary current systems

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Author: Vanhamäki, Heikki1; Juusola, Liisa2
Organizations: 1University of Oulu, Oulu, Finland
2Finnish Meteorological Institute, Helsinki, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 0.8 MB)
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Language: English
Published: Springer Nature, 2020
Publish Date: 2019-12-19


This is a review of the Spherical Elementary Current System or SECS method, and its various applications to studying ionospheric current systems. In this chapter, the discussion is more general, and applications where both ground-based and/or satellite observations are used as the input data are discussed. Application of the SECS method to analyzing electric and magnetic field data provided by the Swarm satellites will be discussed in more detail in the next chapter.

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ISBN: 978-3-030-26732-2
ISBN Print: 978-3-030-26731-5
Volume: 17
Pages: 5 - 33
DOI: 10.1007/978-3-030-26732-2_2
Host publication: Ionospheric multi-spacecraft analysis tools : Approaches for deriving ionospheric parameters
Host publication editor: Dunlop, Malcolm Wray
Lühr, Hermann
Type of Publication: A3 Book chapter
Field of Science: 115 Astronomy and space science
Copyright information: © The Author(s) 2020. This chapter is licensed under the terms of the Creative Commons Attribution 4.0 International License (, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made. The images or other third party material in this chapter are included in the chapter's Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the chapter's Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.