Study of solar wind plasma structure and their association with geomagnetic field variation

Summary form only given. Scientifically we are living in very exciting times. The last three decades have proved to be very fruitful for the study of the solar-terrestrial environment including the geo-space, as well as for the interior of Earth. To analyse the geomagnetic activity associated with the structure present solar wind plasma and other interplanetary disturbance have used all the available solar interplanetary parameter and geomagnetic indices i.e. D_st, A_p, K_p, A_e etc. These datas have been collected from various sources for the period of 1996 - 2005 covering the recent solar cycle 23.