Statistical Relation of CMEs Related Geomagnetic Storms With Interplanetary Magnetic Fields
Abstract
We have studied geomagnetic storm (Dst?-150 nT), associated with Coronal Mass Ejections (CMEs), observed during the period of 2000-2011 with Interplanetary Magnetic Fields. It is observed that coronal mass ejections (CMEs) related geomagnetic storms are found to be association rates of halo and partial halo CMEs are 18(90%) and 02(10%) respectively. From the further analysis, positive co-relation has been found between magnitude of CMEs related geomagnetic storms and speed of coronal mass ejections (CMEs), with correlation coefficient 0.50. Positive co-relation has been found between magnitude of CMEs related geomagnetic storms and magnitude of change in interplanetary magnetic fields, with correlation coefficient 0.55, positive co-relation has been found between magnitude of CMEs related geomagnetic storms and peak value of change in interplanetary magnetic fields, with correlation coefficient 0.56.
Keywords– Geomagnetic Storms, Coronal Mass Ejection and Interplanetary Magnetic Fields.
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ISSN (Paper)2224-719X ISSN (Online)2225-0638
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