Variability of Terrestrial Magnetism at Kakioka and Audibility of European Short-wave signals recieved at Okinawa

[摘要] The signal audibility, fading and atmospheric disturbance on short-wave reception from Effel Tower were observed at Okinawa daily at 5.55 AM from November, 1929 to March, 1930 and in the same period in 1930 to 1931; and their daily variations and also the magnetic variability at Kakioka are shown graphically. The writer reports on the results of investigation on the correlation between the daily magnetic variability and the signal audibility, and on the relation between the magnetic character and the signal fading. At the end, these results are compared with those of other experimenters.

[学科分类] 大气科学