On some characteristics of ionospheric disturbances at Genova, Italy

Abstract

Ionospheric disturbances recorded at Genova are studied in relation to the corresponding geomagnetic disturbances. Storm time and disturbance daily variation are derived, as well as some characteristic features of ionospheric perturbations. Generally these perturbations are dealyed with respect to the corresponding geomagnetic disturbances: the mean time-lag referred to the whole day is of the order of 1h30m, but if thessc occurs in the morning or near noon the mean time-lag is nearly of 4h.