VHF-radar observations of layered structure of the equatorial spread-F: Implications to the spatial resonance effect

Abstract

Recently the spatial resonance rnechanism of gravity waves and plasma drifts was assumed to be responsible for the modulation of the macro­scale structure of the equatorial spread-F (Beer, 1974; Rottger, 1975a). To check this idea, RTI-records of the Jicarnarca radar (Woodrnan and La Hoz, 1976) which indicate quasi-periodic layers of spread-F irregular­ities were evaluated.