Sastri, J. H; Murthy, B. S
(National Institute of Science Communication And Information Resources, 1975-06)
A study of quarter-hourly ionograms of Kodaikanal (geomag. lat: O'6oN; dip: 3'5°N) showed several instances when the spread-F disappears and subsequently. reappears in two hrs or less during it night. Investigation of such ...