Open AccessAnalytical Study of Severe and Great Geomagnetic Storms
Author(s) -
Amita Raizada
Publication year - 2021
Publication title -
journal of mountain research/journal of mountain research
Language(s) - English
Resource type - Journals
eISSN - 2582-5011
pISSN - 0974-3030
DOI - 10.51220/jmr.v16i2.2
Subject(s) - geomagnetic storm , coronal mass ejection , sunspot , storm , earth's magnetic field , equator , southern hemisphere , northern hemisphere , solar cycle 23 , solar cycle 24 , coronal hole , climatology , geology , atmospheric sciences , meteorology , geography , physics , solar wind , latitude , geodesy , magnetic field , quantum mechanics
Severe and Great Geomagnetic storms are considered to be those which have Dst less than -200nT. The investigation years are January 1996 to December 2006, which refers to 23rd solar cycle. During this period, 18 Geomagnetic storms are observed. When there are maximum number of sunspots present at the solar disk, highest number of these Geomagnetic storms are observed, which is quite obvious. The Coronal Mass Ejections responsible for these storms depict latitudinal as well as longitudinal bias showing more inclination towards northern hemisphere and western region of the solar disk. These Coronal Mass Ejections are confined between 25 of the equator.