Variations of the earth magnetic field observed during so-called Dellinger effect of radio waves
Imamiti, S.
Abstract
26 cases of 48 radio short wave disturbance, which occurred in the period from March, 1935 to January, 1937 were associated with magnetic variations. Investigation of them has led to the following results; a). Magnetic variations accompanied by Dellinger effect have such a tendency that they occur to increase the amplitudes of diurnal magnetic variations. b). Increase of ionisation density of upper atmosphere during this phenomenon is greater at local noon than at other times, and from this it is concluded that the ionisation originates in ultraviolet light of the sun. c). Increase of ionisation density is in most cases below 1.5 times of it’s usual value of the corresponding time of the days, but some time it occurs over 3 times. d). The seat of the origin of diurnal magnetic variation seems to be found in the lower ionisation layer.
