Depletion of Potential Gradient During Solar Proton Events over South Polar Cap Region.

Jeni Victor Nepolian, Equatorial Geophysical Research Laboratory, Indian Institute of Geomagnetism, Krishnapuram, Tirunelveli – 627 011, India., Tirunelveli, India, Frank Kamenetsky A V, Arctic and Antarctic Research Institute, St. Petersburg, Russia, Manu S, MES Degree College, Bengaluru, India, Bengaluru, India and Panneerselvam C, Equatorial Geophysical Research Laboratory, Indian Institute of Geomagnetism, Tirunelveli, India