Annales Geophysicae
Annales Geophysicae
ANGEO
Articles | Volume 40, issue 4
Articles | Volume 40, issue 4
https://doi.org/10.5194/angeo-40-433-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-40-433-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 40, issue 4
Regular paper
 | 
04 Jul 2022
Regular paper |  | 04 Jul 2022

Diagnostic study of geomagnetic storm-induced ionospheric changes over very low-frequency signal propagation paths in the mid-latitude D region

Victor U. J. Nwankwo, William Denig, Sandip K. Chakrabarti, Olugbenga Ogunmodimu, Muyiwa P. Ajakaiye, Johnson O. Fatokun, Paul I. Anekwe, Omodara E. Obisesan, Olufemi E. Oyanameh, and Oluwaseun V. Fatoye

Viewed

Total article views: 2,730 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
2,097 546 87 2,730 87 83
  • HTML: 2,097
  • PDF: 546
  • XML: 87
  • Total: 2,730
  • BibTeX: 87
  • EndNote: 83
Views and downloads (calculated since 06 Aug 2021)
Cumulative views and downloads (calculated since 06 Aug 2021)

Viewed (geographical distribution)

Total article views: 2,730 (including HTML, PDF, and XML) Thereof 2,585 with geography defined and 145 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Latest update: 17 Jul 2024
Download
Short summary
We combined the observed diurnal VLF amplitude variation in the D region with standard measurements of the E and F regions to perform a diagnostic investigation of coupled geomagnetic storm effects in order to understand the observed storm-induced variations in VLF narrowband based on state and responses of the ionosphere. The dayside VLF amplitude showed a tendency for attenuation following geomagnetic storms, and the h’E and h’F variations confirmed strong storm response over the signal paths.
Read more