• Rajesh Mathpal
• Lalan Prasad

In the present study we have investigated the impact of sunspot numbers on geomagnetic stroms. In our study Disturbance storm time ( Dst ) index is taken as a measure of Geomagnetic Storm (GS). We have investigated SSN with Dst (≤ -50 nT) during the time interval 1997-2016. The comparative study of dst and SSN shows V shaped structure. The study shows symmetric and asymmetric structures. This shows the variation in geomagnetic field is greatly affected by various phase of solar cycle. The phase relationship caused due to differential rotations of Sun causes change in ring current shielding the earth. This causes change in geomagnetic activity. This study is important for studying the space weather phenomenon

GS - Geomagnetic storm, Dst - Disturbance storm-time, CME - Coronal mass ejection, ICME - Interplanetary coronal mass ejection, SSN – Sunspot Number.

"A COMPARATIVE STUDY OF SSN AND DST FOR SOLAR CYCLE 23 AND 24", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 11, page no.421-427, November-2018, Available :http://www.jetir.org/papers/JETIR1811662.pdf

"A COMPARATIVE STUDY OF SSN AND DST FOR SOLAR CYCLE 23 AND 24", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 11, page no. pp421-427, November-2018, Available at : http://www.jetir.org/papers/JETIR1811662.pdf