Articles | Volume 44, issue 2
https://doi.org/10.5194/angeo-44-811-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-44-811-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Regular paper
| 
24 Aug 2026
Regular paper |
| 24 Aug 2026
| 24 Aug 2026
High latitude, dayside rapid geomagnetic variations observed with ground-based magnetometers in Greenland
Marie Vigger Eldor
CORRESPONDING AUTHOR
Division of Geomagnetism and Geospace, DTU Space, National Space Institute, Technical University of Denmark, Akademivej 356, 2800 Kgs. Lyngby, Denmark
Tromsø Geophysical Observatory (TGO), UiT the Arctic University of Norway, 9037 Tromsø, Norway
Magnar Gullikstad Johnsen
Tromsø Geophysical Observatory (TGO), UiT the Arctic University of Norway, 9037 Tromsø, Norway
Nils Olsen
Division of Geomagnetism and Geospace, DTU Space, National Space Institute, Technical University of Denmark, Akademivej 356, 2800 Kgs. Lyngby, Denmark
Anna Naemi Willer
Division of Geomagnetism and Geospace, DTU Space, National Space Institute, Technical University of Denmark, Akademivej 356, 2800 Kgs. Lyngby, Denmark
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Short summary
Rapid geomagnetic variations in the ultra-low frequency band are observed using ground-based magnetometers. We apply four years of data from West Greenland in a statistical analysis of the distribution of such variations. We identify a rapid geomagnetic variation population associated with the magnetospheric cusp that is separate from the auroral oval during summer. Earlier studies, which were mainly performed in winter, failed to unambiguously identify these variations.
Rapid geomagnetic variations in the ultra-low frequency band are observed using ground-based...
