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Issue: August 2022

Volume 7 | Issue 8

Impact factor: 8.15

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Paper Title: Seasonal Dynamics of Geomagnetic Storm
Authors Name: Bishir Usman , Ibrahim Jafaru
Unique Id: IJSDR2206061
Published In: Volume 7 Issue 6, June-2022
Abstract: This study is based on the seasonal dynamic of geomagnetic storms. The 1 hour Dst geomagnetic index was used in this work to characterize the geomagnetic storm development and it was obtained from the World Data Centre for Geomagnetism, WDC-Kyoto. One-hour data of the vertical component of interplanetary magnetic field IMF-z and solar wind ion parameters; proton density (Np), proton temperature (Tp) and proton speed (Vp) were obtained from the MAG and SWEPAM experiments on the Advance Composition Explorer (ACE) spacecraft, as given by the ACE Science Centre. The period selected for the analysis is the ACE observational period from 2011 to 2018, for which the Dst index was available in its final form when this work was performed. Intense geomagnetic storms that reaches, at least, a Dst peak of −100 nT were selected. Considering this criterion, a total of 20 events were obtained. From this data-set, 8 storms were used in the study, out of which three are selected each from summer and equinox and two from winter. Base on the analysis of the data it is observed that disturbed storm index (Dst) lags behind vertical component of interplanetary magnetic field IMF-z with a range of 3-11UTC in summer season, 1-6UTC in winter and 6- 14UTC in equinox. This means that the time delay between vertical component of interplanetary magnetic field and disturbed storm index is comparably highest in equinox and least in winter.
Keywords: seasonal variation, geomagnetic storm, solar proton density, solar proton temperature, solar proton speed, interplanetary magnetic field and disturbed storm index
Cite Article: "Seasonal Dynamics of Geomagnetic Storm", International Journal of Science & Engineering Development Research (www.ijsdr.org), ISSN:2455-2631, Vol.7, Issue 6, page no.367 - 378, June-2022, Available :http://www.ijsdr.org/papers/IJSDR2206061.pdf
Downloads: 000101773
Publication Details: Published Paper ID: IJSDR2206061
Registration ID:200743
Published In: Volume 7 Issue 6, June-2022
DOI (Digital Object Identifier):
Page No: 367 - 378
Publisher: IJSDR | www.ijsdr.org
ISSN Number: 2455-2631

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