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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 36, issue 2
Ann. Geophys., 36, 337–347, 2018
https://doi.org/10.5194/angeo-36-337-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: The Earth’s magnetic field: measurements, data, and applications...

Ann. Geophys., 36, 337–347, 2018
https://doi.org/10.5194/angeo-36-337-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.

Regular paper 07 Mar 2018

Regular paper | 07 Mar 2018

On the relevance of source effects in geomagnetic pulsations for induction soundings

Anne Neska et al.

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Short summary
Passive electromagnetic induction soundings in the far field live on the fact that natural electromagnetic field variations (their source signals) fulfill the plane-wave assumption. In the frequency range of geomagnetic pulsations some signals (upstream waves) do and others (field line resonances) do not meet this condition. The consequences for several branches of such soundings are shown. A consequence is that a remote reference site may be situated in another continent than the local site.
Passive electromagnetic induction soundings in the far field live on the fact that natural...
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