抄録
We equipped cathode-ray direction-finders on three observation stations which were situated on the end-points of the long base lines, and made simultaneous recordings of atmospherics bearing on photographic film. With these records we located atmospherics sources over a wide region which includes the tropical zone.
Comparing the distribution of atmospherics sources with meteorological phenomena, we get the following results:
1. Atmospherics received stationarily in Japan are usually generated by the thunderstorms which occur in South-east Asia, Australia and India.
2. In the region to the north of the 60°N line, we can scarcely find the atmospherics source.
3. In the temperate region, including Japan, atmospherics are observed to be accompanied with thunderstorms frontal, lines and depressions.
