Seasonal Variations in the Intensity of Sq Current System & Its Focus Latitude over the Indian Region

The signatures of solar quiet day (Sq) variation in the geomagnetic field components at Gulmarg and other midlatitude stations in the IndiaUSSR region are used to determine the focus latitude and intensity of the Sq current system for each month of the year. The focus 1atitude in its annual progression shows a sharp southward shift in August and a northward shift in Octobeiand November. Intensity modulation of the current system is accompanied by significant deformation, particularly in the second half of the year. During summer and equinoxes, Sq focus appears to be in south ofGulmarg in the morning hours and moves back to north of Gulmarg in the afternoon.