A Study of the Relationship Between Southward Bz > -10 nT and Storm Time Disturbance Index During Solar Cycle 23
Keywords:
Magnetic reconnection , Dst, intense geomagnetic storm, moderate southward IMF- Bz, solar maximum, solar minimum, solar cycleAbstract
Magnetic reconnection can be used for studying the geoeffective processes in the coupled Sun–Solar wind – Magnetosphere dynamics leading to geomagnetic disturbance. In this study, 1-hour resolution solar wind plasma parameters from OMNIweb were used to investigate the relationship between moderate southward interplanetary magnetic field, IMF-Bz (i.e., Bz > -10 nT) and geomagnetic storm time disturbance, Dst , during the ascending, maximum and descending phases of solar cycle 23. Occurrences of different classes of geomagnetic storms during moderate southward Bz are reported. The occurrence of weak and moderate geomagnetic storms is more predominant during maximum solar activity than intense and super intense storms. It was found that 10.11 % (181) of all the classes of the storm were intense, and 0.17 % (3) were super intense storms. Furthermore, it was found that 4 (2.2 %) out of the 181 intense storms were caused by southward Bz > -10 nT which were associated with the complex structure due to the high-speed solar wind stream and corotating interacting region. In such a complex structure and Bz > -10 nT, we observed that an intense geomagnetic storm rarely occurs and if it does, would be predominant around solar maximum. It was found that long-duration (\Delta t > 6 hrs) of southward Bz (i.e., -10 nT < Bz <= -3.6 nT ) can also lead to an intense geomagnetic storm during the solar maximum and descending phase (moderate solar activity) of a solar cycle. The complex structure of intense geomagnetic storms associated with the Bz > -10 nT is rare and possesses a special configuration of magnetic field and solar wind parameters structures which are CIR manifestations.
Published
How to Cite
Issue
Section
Copyright (c) 2022 T. W. David, B. J. Adekoya, C. M. Michael, S. A. Adekoya, O. A. Adenuga, S. O. Kareem, H. T. Oladunjoye, A. E. Ajetunmobi, O. T. Williams, D. T. Ogundele

This work is licensed under a Creative Commons Attribution 4.0 International License.
How to Cite
Similar Articles
- Boukary Damiba, Christian Zoundi, Abdoul Kader Segda, Dynamics of the Earth’s magnetopause’s subsolar location during solar cycle 24 in relation to the phases of geomagnetic storms of CME origin , Journal of the Nigerian Society of Physical Sciences: Volume 8, Issue 1, February 2026
- Nongobsom Bazié, Christian Zoundi, M'BI Kaboré, Alfred Jean Stéphane Dama, Frédéric Ouattara, Response of the magnetospheric convection electric field (MCEF) to geomagnetic storms during the solar cycle 24 declining phase , Journal of the Nigerian Society of Physical Sciences: Volume 7, Issue 4, November 2025
- Shola Adebiyi, Isaac Adimula, Olushola Oladipo, Inter-Hemispheric Comparison of Ionospheric TEC Variation at Each Latitudinal Band During Quiet Geomagnetic Condition , Journal of the Nigerian Society of Physical Sciences: Volume 2, Issue 2, May 2020
- S. O. Ikubanni, S. J. Adebiyi, B. O. Adebesin, O. S. Bolaji, B. J. Adekoya, B. W. Joshua, J. O. Adeniyi, GPS-TEC Variations over the African Low-latitude Ionosphereduring March 2013 and 2015 Geomagnetic Storms , Journal of the Nigerian Society of Physical Sciences: Volume 2, Issue 4, November 2020
- Aladodo Sarafadeen Shehu, Ibrahim Bolaji Balogun, Ibrahim Yakubu Tudunwada, Variation, distribution and trends of aerosol optical properties in Africa during 2000-2022 , Journal of the Nigerian Society of Physical Sciences: Volume 7, Issue 2, May 2025
- B. J. Adekoya, B. O. Adebesin, V. U. Chukwuma, S. J. Adebiyi, S. O. Ikubanni, H. T. Oladunjoye, E. O. Adekoya, Pattern and variation of electron ionisation gradient as related to the plasma distribution mechanisms during the total solar eclipse of March 20, 2015 , Journal of the Nigerian Society of Physical Sciences: Volume 7, Issue 2, May 2025
- Mokhtar Ali, Abdelkerim Souahlia, Abdelhalim Rabehi, Mawloud Guermoui, Ali Teta, Imad Eddine Tibermacine, Abdelaziz Rabehi, Mohamed Benghanem , A robust deep learning approach for photovoltaic power forecasting based on feature selection and variational mode decomposition , Journal of the Nigerian Society of Physical Sciences: Volume 7, Issue 3, August 2025
- I Magaji, A Shuaibu, M. S Abubakar, M Isah, Effect of Substitutional Point Defect of Gold (Au) in Indium (In) Site of Double Halide Perovskite (Cs2InSbCl6) , Journal of the Nigerian Society of Physical Sciences: Volume 3, Issue 4, November 2021
- W. A. Yahya, A. A. Yahaya, A. A. Adewale, A. A. Sholagberu, N. K. Olasunkanmi, A DFT study of optoelectronic, elastic and thermo-electric properties of the double perovskites Rb2SeX6 (X=Br,Cl) , Journal of the Nigerian Society of Physical Sciences: Volume 5, Issue 2, May 2023
- F. O. Aweda, J. A. Akinpelu, T. K. Samson, M. Sanni, B. S. Olatinwo, Modeling and Forecasting Selected Meteorological Parameters for the Environmental Awareness in Sub-Sahel West Africa Stations , Journal of the Nigerian Society of Physical Sciences: Volume 4, Issue 3, August 2022
You may also start an advanced similarity search for this article.
Most read articles by the same author(s)
- A. E. Ajetunmobi, A. O. Musthapha, I. C. Okeyode, A. M. Gbadebo, D. Al-Azmi, T. W. David, Assessing the need for radiation protection measures in artisanal and small scale mining of tantalite in Oke-Ogun, Oyo State, Nigeria , Journal of the Nigerian Society of Physical Sciences: Volume 4, Issue 3, August 2022

