ABSTRACT
Geomagnetic storms are temporal disturbances of the Earth’s magnetosphere caused by a
prolonged southward interplanetary magnetic field and usually coinciding with the arrival of
coronal mass ejections (CME). Most geomagnetic storms occur under disturbed condition
making it intrinsically uneasy to distinguish one geomagnetic storm from another especially in
respect of the solar origin. Thirty four (34) geomagnetic storms occurring between 1997-2012
have been studied whose storm signatures could be uniquely associated with the occurrence of
solar flare. Twelve (12) of this events are associated with flares that occurred within 45ı of the
central meridian (CM) while Eleven (11) were non- central meridian (NCM) solar flares. A weak
correlation (-0.24) was obtained between peak Dst and peak x-ray flux for all the thirty four (34)
events. When the CM flares were considered a strong correlation (-0.76) was obtained. The
correlation for NCM flares (between 45ı − 90ı) of the central meridian was much weaker than
the CM flares associated with geomagnetic storms. This result suggests that the solar flares
farther away from the central meridian are likely associated with major storms irrespective of the
size of the flare. These results have important implications for the present effort to predict the
occurrence of geomagnetic storms.
KENNETH, I (2021). A Study Of Geomagnetic Storms And Associated Solar Flares. Afribary. Retrieved from https://tracking.afribary.com/works/a-study-of-geomagnetic-storms-and-associated-solar-flares
KENNETH, ILUORE "A Study Of Geomagnetic Storms And Associated Solar Flares" Afribary. Afribary, 13 May. 2021, https://tracking.afribary.com/works/a-study-of-geomagnetic-storms-and-associated-solar-flares. Accessed 23 Nov. 2024.
KENNETH, ILUORE . "A Study Of Geomagnetic Storms And Associated Solar Flares". Afribary, Afribary, 13 May. 2021. Web. 23 Nov. 2024. < https://tracking.afribary.com/works/a-study-of-geomagnetic-storms-and-associated-solar-flares >.
KENNETH, ILUORE . "A Study Of Geomagnetic Storms And Associated Solar Flares" Afribary (2021). Accessed November 23, 2024. https://tracking.afribary.com/works/a-study-of-geomagnetic-storms-and-associated-solar-flares