Geomagnetic Field Variation during Winter Storm at Localized Southern and Northern High

• Main Authors: Babita Devi, Smita Dubey, Shailendra Saini, Rajni Devi, Rashmi Wahi, Ajay Dhar, S. K. Vijay, A. K. Gwal
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Antarctic; Indian; Kiruna; Maitri; Antarc*
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.628.2096; http://www.ias.ac.in/jaa/marjun2008/JAA34.pdf

Abstract. This paper presents the effect of geomagnetic storm on geo-magnetic field components at Southern (Maitri) and Northern (Kiruna) Hemispheres. The Indian Antarctic Station Maitri is located at geom. long. 66.03 ◦ S; 53.21 ◦ E whereas Kiruna is located at geom. long. 67.52 ◦ N; 23.38 ◦ E. We have studied all the geomagnetic storms that occurred during winter season of the year 2004–2005. We observed that at Southern Hemisphere the variation is large as compared to the Northern Hemisphere. Geomagnetic field components vary when the interplanetary magnetic field is oriented in southward direction. Geomagnetic field components vary in the main phase of the ring current. Due to southward orientation of vertical component of IMF reconnection takes place all across the dayside that transports plasma and magnetic flux which create the geomagnetic field variation. Key words. Dst—vertical component of interplanetary magnetic field and geomagnetic field components. 1.