“…Any change in the electric field influences the occurrence of low-latitude scintillations. With increasing interest in understanding the behavior of ionospheric irregularities near the magnetic equator, efforts have been made to examine the influence of solar and magnetic activity over the occurrence of scintillations associated with ionospheric irregularities (Aarons et al, 1980;Rastogi et al, 1981;DasGupta et al, 1985;Dabas et al, 1989;Pathak et al, 1995;Chakraborty et al, 1999;Kumar and Gwal, 2000;Banola et al, 2001;Basu et al, 2001a, b;Bhattacharya et al, 2002). Analysis of the role of magnetic storms on low-latitude scintillations has shown that for most of the storms for which the recovery phase starts after midnight, the probability of occurrence of scintillation activity is enhanced during the post-midnight period (Aarons and Das Gupta, 1984;Kumar and Gwal, 2000).…”