摘要：Simultaneous observations of ELF・VLF emissions, magnetic variations, cosmic noise absorption and auroras have been carried out at Syowa and Mizuho Stations since June 1976. Mizuho Station is located at a distance of ～270 km poleward on the same magnetic meridian as that of Syowa. From the ELF emission data observed at both the stations, the following results were obtamed 1) Frequency-time spectra of ELF chorus emissions were quite similar at both the stations. However, it ls found that the intensity in the lower frequency range (<15 kHz) is greater at Mizuho than at Syowa, and veisa in the higher frequency range 2) The period of QP emissions was same at both the stations.
