Articles | Volume 28, issue 2
https://doi.org/10.5194/npg-28-257-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/npg-28-257-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
19 May 2021
Research article |
| 19 May 2021
| 19 May 2021
Magnetospheric chaos and dynamical complexity response during storm time disturbance
Irewola Aaron Oludehinwa
CORRESPONDING AUTHOR
Department of Physics, University of Lagos, Lagos, Nigeria
Olasunkanmi Isaac Olusola
Department of Physics, University of Lagos, Lagos, Nigeria
Olawale Segun Bolaji
Department of Physics, University of Lagos, Lagos, Nigeria
Department of Physics, University of Tasmania, Hobart, Australia
Olumide Olayinka Odeyemi
Department of Physics, University of Lagos, Lagos, Nigeria
Abdullahi Ndzi Njah
Department of Physics, University of Lagos, Lagos, Nigeria
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The contributing influence of SSWs (sudden stratospheric warming) on regional ionosphere through chaos theory is examined. We find that ionospheric chaos is more pronounced in the European sector compared to the African sector during an SSW. Evidence of orderliness behavior in regional ionosphere of African sector is observed. Finally, we notice that after the peak phase of an SSW, ionospheric chaos is found to be more pronounced.
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Irewola Aaron Oludehinwa, Andrei Velichko, Olasunkanmi Isaac Olusola, Olawale Segun Bolaji, Norbert Marwan, Babalola Olasupo Ogunsua, Abdullahi Ndzi Njah, and Timothy Oluwaseyi Ologun
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The contributing influence of SSWs (sudden stratospheric warming) on regional ionosphere through chaos theory is examined. We find that ionospheric chaos is more pronounced in the European sector compared to the African sector during an SSW. Evidence of orderliness behavior in regional ionosphere of African sector is observed. Finally, we notice that after the peak phase of an SSW, ionospheric chaos is found to be more pronounced.
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This preprint is open for discussion and under review for Annales Geophysicae (ANGEO).
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This study examine the recurrence patterns in the Earth's polar cap variations in response to great, severe, strong, moderate, and weak storms. Complex system methods comprising Recurrence Plot (RP), Recurrence Rate (RR) and Length of diagonal line (L) was used to unveil the recurring patterns in the Earth polar cap. The recurrence density and deterministic behavior in Earth polar cap variations intensifies with increased solar wind energy input into the magnetosphere.
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Movement of plasma to higher latitudes by EIA is known to relate to eastward electric field/EEJ and thermospheric meridional neutral wind. Experiments from GPS measurements that unveil thermospheric meridional neutral wind effect on plasma transportation in the F region are very few compared with electric field/EEJ. This work includes examples of thermospheric meridional neutral wind effects on GPS TEC measurements and their roles in transportation of plasma compared to electric field/EEJ.
Related subject area
Subject: Bifurcation, dynamical systems, chaos, phase transition, nonlinear waves, pattern formation | Topic: Ionosphere, magnetosphere, planetary science, solar science | Techniques: Big data and artificial intelligence
Ionospheric chaos in the solar quiet current due to sudden stratospheric warming events across the European and African sectors
Irewola Aaron Oludehinwa, Andrei Velichko, Olasunkanmi Isaac Olusola, Olawale Segun Bolaji, Norbert Marwan, Babalola Olasupo Ogunsua, Abdullahi Ndzi Njah, and Timothy Oluwaseyi Ologun
Nonlin. Processes Geophys., 32, 225–242, https://doi.org/10.5194/npg-32-225-2025, https://doi.org/10.5194/npg-32-225-2025, 2025
Short summary
Short summary
The contributing influence of SSWs (sudden stratospheric warming) on regional ionosphere through chaos theory is examined. We find that ionospheric chaos is more pronounced in the European sector compared to the African sector during an SSW. Evidence of orderliness behavior in regional ionosphere of African sector is observed. Finally, we notice that after the peak phase of an SSW, ionospheric chaos is found to be more pronounced.
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Short summary
The MLE and ApEn values of the Dst indicate that chaotic and dynamical complexity responses are high during minor geomagnetic storms, reduce at moderate geomagnetic storms and decline further during major geomagnetic storms.
However, the MLE and ApEn values obtained from solar wind electric field (VBs) indicate that chaotic and dynamical complexity responses are high with no significant difference between the periods that are associated with minor, moderate and major geomagnetic storms.
The MLE and ApEn values of the Dst indicate that chaotic and dynamical complexity responses are...
