Articles | Volume 40, issue 4
https://doi.org/10.5194/angeo-40-433-2022
https://doi.org/10.5194/angeo-40-433-2022
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

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Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on angeo-2021-42', Sergey Sokolov, 07 Sep 2021
    • AC1: 'Reply on RC1', Victor U J Nwankwo, 06 Oct 2021
  • RC2: 'Comment on angeo-2021-42', Anonymous Referee #2, 01 Oct 2021
    • AC2: 'Reply on RC2', Victor U J Nwankwo, 06 Oct 2021

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to revisions (further review by editor and referees) (13 Oct 2021) by Keisuke Hosokawa
AR by Victor U J Nwankwo on behalf of the Authors (19 Feb 2022)  Author's response    Author's tracked changes    Manuscript
ED: Referee Nomination & Report Request started (07 Mar 2022) by Keisuke Hosokawa
RR by Sergey Sokolov (28 Mar 2022)
RR by Anonymous Referee #2 (07 Apr 2022)
ED: Publish as is (13 Apr 2022) by Keisuke Hosokawa
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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.