Dependence of VLF wave activity at Syowa Station on the day of the week

• Main Authors: Hiroshi Higuchi, Iwane Kimura, Kozo Hashimoto, Natsuo Sato, Yutaka Tonegawa
• Format: Report
• Language: English
• Published: Department of Electrical Engineering, Kyoto University/Department of Electrical Engineering, Kyoto University/Department of Electrical Engineering, Tokyo Electrical University/National Institute of Polar Research/Department of Aeronautics and Astronautics, Tokai University 1986
• Subjects: Syowa Station; Siple; Memoirs of National Institute of Polar Research; Polar Research
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1987; http://id.nii.ac.jp/1291/00001987/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1987&item_no=1&attribute_id=18&file_no=1

In reference to the Sunday decrease of VLF activity observed at Siple Station, VLF wave multi-frequency channel data stored in magnetic computer tapes at Syowa Station have been analyzed for the period from July 1981 to December 1983. Using 2s sampling data, at 0.75,1.2 and 2.0kHz, a minimum for every 10s is picked up and is then averaged over one hour. From these hourly ualues for the whole period of analysis, the diurnal variation of the intensity at each frequency for the average of all Sunday data is compared with that drawn for data of the rest of the week (ROW). From this result, we cannot confirm any significant difference on Sunday in comparison with another day of the week.