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
- O. M. Adedokun, O. P. Oladejo, K. N. Alao, E. O. Adeniyi, H. Otobrise, K. O. Suleman, T. A. Adagunodo, O. Adedokun, L. A. Sunmonu, Delineation of structural lineaments of Shaki West Southwestern Nigeria using high resolution aeromagnetic data , Journal of the Nigerian Society of Physical Sciences: Volume 7, Issue 2, May 2025
- C. J. Ajaelu, O. Oyedele, A. A. Ikotun, E. O. Faboro, Safranin O dye removal using Senna fistula activated biomass: Kinetic, equilibrium and thermodynamic studies , Journal of the Nigerian Society of Physical Sciences: Volume 5, Issue 1, February 2023
- Paavithashnee Ravi Kumar, Majid Khan Majahar Ali, Olayemi Joshua Ibidoja, Identifying heterogeneity for increasing the prediction accuracy of machine learning models , Journal of the Nigerian Society of Physical Sciences: Volume 6, Issue 3, August 2024
- Abiodun Oluwatosin Adeoye, Rukayat Oluwatobiloba Quadri, Olayide Samuel Lawal, Sustainable remediation of vancomycin polluted water using pyrolysis biochar of pressed oil palm fruit fibre , Journal of the Nigerian Society of Physical Sciences: Volume 7, Issue 2, May 2025
- Olusola J. Ojo, Suraju A. Adepoju, Ayodeji Awe, Kehinde A. Alalade, Patti formation shales at Agbaja Plateau: A geochemical window into the provenance and tectonic setting history of the Southern Bida Basin, Nigeria , Journal of the Nigerian Society of Physical Sciences: Volume 7, Issue 3, August 2025
- S. A. Adesokan, A. A. Giwa, I. A. Bello, Removal of Trimethoprim from Water using Carbonized Wood Waste as Adsorbents , Journal of the Nigerian Society of Physical Sciences: Volume 3, Issue 4, November 2021
- O. J. Ibidoja, F. P. Shan, Mukhtar, J. Sulaiman, M. K. M. Ali, Robust M-estimators and Machine Learning Algorithms for Improving the Predictive Accuracy of Seaweed Contaminated Big Data , Journal of the Nigerian Society of Physical Sciences: Volume 5, Issue 1, February 2023
- Yusuf Olanrewaju Saheed, Mufutau Abiodun Salawu, Aderemi Babatunde Alabi, Mechanical Evaluation and Minerals Phases Identification of Fine and Coarse Okelele Block Clay Composites for Furnace Lining Application , Journal of the Nigerian Society of Physical Sciences: Volume 4, Issue 1, February 2022
- Suha Ibrahim Salih AL-Ali, Nihad Jalal Kadhem AL-Awsi, Simulation of the Movement of Groundwater in an Aquifer , Journal of the Nigerian Society of Physical Sciences: Volume 5, Issue 3, August 2023
- Timothy Kayode Samson, Francis Olatunbosun Aweda, Wind speed prediction in some major cities in Africa using Linear Regression and Random Forest algorithms , Journal of the Nigerian Society of Physical Sciences: Volume 6, Issue 4, November 2024
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

