University of Oulu

Vanhamäki H., Juusola L., Kauristie K., Workayehu A., Käki S. (2020) Spherical Elementary Current Systems Applied to Swarm Data. In: Dunlop M., Lühr H. (eds) Ionospheric Multi-Spacecraft Analysis Tools. ISSI Scientific Report Series, vol 17. Springer, Cham.

Spherical elementary current systems applied to swarm data

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Author: Vanhamäki, Heikki1; Juusola, Liisa2; Kauristie, Kirsti2;
Organizations: 1University of Oulu, Oulu, Finland
2Finnish Meteorological Institute, Helsinki, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.1 MB)
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Language: English
Published: Springer Nature, 2020
Publish Date: 2019-12-19


This chapter describes how the Spherical Elementary Current Systems (SECS) are applied to analyze the magnetic and electric field measurements provided by the Swarm spacecraft. The Swarm/SECS method produces two-dimensional (latitude–longitude) maps of the ionospheric horizontal and field-aligned currents around the satellite paths. If also electric field data are available, similar maps of the electric field and conductances can be obtained.

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ISBN: 978-3-030-26732-2
ISBN Print: 978-3-030-26731-5
Volume: 17
Pages: 35 - 53
DOI: 10.1007/978-3-030-26732-2_3
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
Funding: The European Space Agency (ESA) is acknowledged for providing the Swarm data and for financially supporting the work on developing the Swarm/SECS method. This work was supported by the Academy of Finland project 314664.
Academy of Finland Grant Number: 314664
Detailed Information: 314664 (Academy of Finland Funding decision)
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.