Characteristics and development of the main phase disturbance in geomagnetic storms (Dst $\le$ -50 nT)

Osman M. Ahmed, Badruudin Zaheer Ahmad, Moncef Derouich

We present geomagnetic storms (GSs) selected from three solar cycles, spanning the years 1995 to 2022. We studied the development of the main phase of storms within disturbance sto…