1997•IACS Institutional Repository (Indian Association for the Cultivation of Science)Open access
Solar and interplanetary causes of large geomagnetic storms.
Shubha Dubey, A. P. Mishra
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Abstract
r The geomagnetic storms and their association with various solai and interplanetary causes have been reported by various authors for last solar cycle In the present lime, an important paradigm shift such that the coronal mass election (CMH)s and not the flaics are considered the causal link w|th solar activity and produces large geomagnetic storms Coronal holes ore also responsible for recurrent geomagnetic storms.The geomagnetic storms are highly correlated with solar wind velocity and strength of the southward component of the interplanetary magnetic field (tis)' In the present study, we have examined all those large geomagnetic storms which are associated with the Storm Time Index (Dst) decrease of more than 100 niT and their association with different type of solar and interplanetary causes during the period 1986-1995, in the light of new shifted paradigm
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