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Research Article
Online Published: 28 Dec 2022
 


The Response of the F2-Layer Peak Parameters Over Four Equatorial/Low Latitude Stations around the Equatorial Ionization Anomaly Crest to Some Geomagnetic Storms

B. W. Joshua, J. O. Adeniyi, F. Adebesin, S. J. Adebiyi And S. O. Ikubanni, Y. M. Suleiman.


Abstract
The equatorial electrodynamics is known to play a vital role in the distribution of ionization at the equatorial and low latitude ionospheric region; it is responsible for the formation of the equatorial ionization anomaly (EIA). The EIA is characterized by the formation of two crests of ionization around ±20° magnetic latitude with a trough at the equator. This study investigates the response of the ionospheric F2 layer over four equatorial/low latitude stations to three (two moderate (Dst ≥ -100 nT) and one strong (Dst = -100 to -150 nT) geomagnetic storms. Two stations were chosen on either side of the geomagnetic equator, such that they fall within the same or a close range of local time. Results from the study show similarities in the response of NmF2 from all the stations to the storm events; both positive and negative phases were recorded from the two stations. The highest percentage change in NmF2 of about 86 % was recorded in Jeju, South Korea, while that of the main phase (about 160 %) was recorded in Townsville, Australia. Averagely, depletions in NmF2 dominate all the phases of the geomagnetic storms, except the strong geomagnetic storm of 30 September – 01 October, 2011. The main phase of this geomagnetic storm corresponds to the daytime period in all the stations. Results from this study further confirm the dependence of the ionospheric response during geomagnetic storms to the local time, geomagnetic coordinates of the stations.

Key words: Equatorial Ionosphere, Geomagnetic storm, NmF2, equatorial electrodynamics, F2 layer, E×B force.


 
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How to Cite this Article
Pubmed Style

Joshua BW, Adeniyi JO, Adebesin F, , Suleiman YM. The Response of the F2-Layer Peak Parameters Over Four Equatorial/Low Latitude Stations around the Equatorial Ionization Anomaly Crest to Some Geomagnetic Storms. SJACR. 2021; 2(2): 52-70.

Web Style

Joshua BW, Adeniyi JO, Adebesin F, , Suleiman YM. The Response of the F2-Layer Peak Parameters Over Four Equatorial/Low Latitude Stations around the Equatorial Ionization Anomaly Crest to Some Geomagnetic Storms. https://www.sjacrksusta.com/?mno=134615 [Access: June 27, 2026].

AMA (American Medical Association) Style

Joshua BW, Adeniyi JO, Adebesin F, , Suleiman YM. The Response of the F2-Layer Peak Parameters Over Four Equatorial/Low Latitude Stations around the Equatorial Ionization Anomaly Crest to Some Geomagnetic Storms. SJACR. 2021; 2(2): 52-70.


Vancouver/ICMJE Style

Joshua BW, Adeniyi JO, Adebesin F, , Suleiman YM. The Response of the F2-Layer Peak Parameters Over Four Equatorial/Low Latitude Stations around the Equatorial Ionization Anomaly Crest to Some Geomagnetic Storms. SJACR. (2021), [cited June 27, 2026]; 2(2): 52-70.


Harvard Style

Joshua, B. W., Adeniyi, . J. O., Adebesin, . F., & Suleiman, . Y. M. (2021) The Response of the F2-Layer Peak Parameters Over Four Equatorial/Low Latitude Stations around the Equatorial Ionization Anomaly Crest to Some Geomagnetic Storms. SJACR, 2 (2), 52-70.


Turabian Style

Joshua, B. W., J. O. Adeniyi, F. Adebesin, S. J. Adebiyi And S. O. Ikubanni, and Y. M. Suleiman. 2021. The Response of the F2-Layer Peak Parameters Over Four Equatorial/Low Latitude Stations around the Equatorial Ionization Anomaly Crest to Some Geomagnetic Storms. Science Journal of Advanced and Cognitive Research, 2 (2), 52-70.


Chicago Style

Joshua, B. W., J. O. Adeniyi, F. Adebesin, S. J. Adebiyi And S. O. Ikubanni, and Y. M. Suleiman. "The Response of the F2-Layer Peak Parameters Over Four Equatorial/Low Latitude Stations around the Equatorial Ionization Anomaly Crest to Some Geomagnetic Storms." Science Journal of Advanced and Cognitive Research 2 (2021), 52-70.


MLA (The Modern Language Association) Style

Joshua, B. W., J. O. Adeniyi, F. Adebesin, S. J. Adebiyi And S. O. Ikubanni, and Y. M. Suleiman. "The Response of the F2-Layer Peak Parameters Over Four Equatorial/Low Latitude Stations around the Equatorial Ionization Anomaly Crest to Some Geomagnetic Storms." Science Journal of Advanced and Cognitive Research 2.2 (2021), 52-70. Print.


APA (American Psychological Association) Style

Joshua, B. W., Adeniyi, . J. O., Adebesin, . F., & Suleiman, . Y. M. (2021) The Response of the F2-Layer Peak Parameters Over Four Equatorial/Low Latitude Stations around the Equatorial Ionization Anomaly Crest to Some Geomagnetic Storms. Science Journal of Advanced and Cognitive Research, 2 (2), 52-70.


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