Experimental Results of the HF Propagation at Syowa Station, Antarctica (Reports of the Japanese Antarctic Research Expedition)
Continuous measurement of the field strength of NHK's overseas broadcasting waves (JOB, 11.815MHz) was carried out from April, 1970, to February, 1971. The diurnal variations in field strength were not found at the equinox, but in other months the field strength dropped after sunset. The night-...
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National Institute of Polar Research
1972
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ftdoajarticles:oai:doaj.org/article:342a6d50565a40f09aa82d4c4aee8c65 2023-05-15T14:00:33+02:00 Experimental Results of the HF Propagation at Syowa Station, Antarctica (Reports of the Japanese Antarctic Research Expedition) Syoji KAINUMA Isao SHIRO Makoto YAMAOKA Masaru ICHINOSE Toshirou SAKAMOTO 1972-11-01T00:00:00Z https://doi.org/10.15094/00007683 https://doaj.org/article/342a6d50565a40f09aa82d4c4aee8c65 EN JA eng jpn National Institute of Polar Research https://doi.org/10.15094/00007683 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00007683 0085-7289 2432-079X https://doaj.org/article/342a6d50565a40f09aa82d4c4aee8c65 Antarctic Record, Iss 45, Pp 1-11 (1972) Geography (General) G1-922 article 1972 ftdoajarticles https://doi.org/10.15094/00007683 2022-12-31T14:30:44Z Continuous measurement of the field strength of NHK's overseas broadcasting waves (JOB, 11.815MHz) was carried out from April, 1970, to February, 1971. The diurnal variations in field strength were not found at the equinox, but in other months the field strength dropped after sunset. The night-time signals at Syowa Station were received mainly through the long path on the great circle. The mode of propagation varies with the condition of the ionosphere, and the mixed mode (e. g. E plus F layer reflection waves) is often predominant. At the main phase of sudden commencement of magnetic storm, the field strength abruptly drops, and this effect must be taken into consideration for the operation of communications. For the purpose of experimental studies of the radio communication in high latitudes, it is planned to continue the field strength measurement on the routine basis in the future. Article in Journal/Newspaper Antarc* Antarctic Antarctica Directory of Open Access Journals: DOAJ Articles Antarctic Syowa Station |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Japanese |
topic |
Geography (General) G1-922 |
spellingShingle |
Geography (General) G1-922 Syoji KAINUMA Isao SHIRO Makoto YAMAOKA Masaru ICHINOSE Toshirou SAKAMOTO Experimental Results of the HF Propagation at Syowa Station, Antarctica (Reports of the Japanese Antarctic Research Expedition) |
topic_facet |
Geography (General) G1-922 |
description |
Continuous measurement of the field strength of NHK's overseas broadcasting waves (JOB, 11.815MHz) was carried out from April, 1970, to February, 1971. The diurnal variations in field strength were not found at the equinox, but in other months the field strength dropped after sunset. The night-time signals at Syowa Station were received mainly through the long path on the great circle. The mode of propagation varies with the condition of the ionosphere, and the mixed mode (e. g. E plus F layer reflection waves) is often predominant. At the main phase of sudden commencement of magnetic storm, the field strength abruptly drops, and this effect must be taken into consideration for the operation of communications. For the purpose of experimental studies of the radio communication in high latitudes, it is planned to continue the field strength measurement on the routine basis in the future. |
format |
Article in Journal/Newspaper |
author |
Syoji KAINUMA Isao SHIRO Makoto YAMAOKA Masaru ICHINOSE Toshirou SAKAMOTO |
author_facet |
Syoji KAINUMA Isao SHIRO Makoto YAMAOKA Masaru ICHINOSE Toshirou SAKAMOTO |
author_sort |
Syoji KAINUMA |
title |
Experimental Results of the HF Propagation at Syowa Station, Antarctica (Reports of the Japanese Antarctic Research Expedition) |
title_short |
Experimental Results of the HF Propagation at Syowa Station, Antarctica (Reports of the Japanese Antarctic Research Expedition) |
title_full |
Experimental Results of the HF Propagation at Syowa Station, Antarctica (Reports of the Japanese Antarctic Research Expedition) |
title_fullStr |
Experimental Results of the HF Propagation at Syowa Station, Antarctica (Reports of the Japanese Antarctic Research Expedition) |
title_full_unstemmed |
Experimental Results of the HF Propagation at Syowa Station, Antarctica (Reports of the Japanese Antarctic Research Expedition) |
title_sort |
experimental results of the hf propagation at syowa station, antarctica (reports of the japanese antarctic research expedition) |
publisher |
National Institute of Polar Research |
publishDate |
1972 |
url |
https://doi.org/10.15094/00007683 https://doaj.org/article/342a6d50565a40f09aa82d4c4aee8c65 |
geographic |
Antarctic Syowa Station |
geographic_facet |
Antarctic Syowa Station |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Antarctic Record, Iss 45, Pp 1-11 (1972) |
op_relation |
https://doi.org/10.15094/00007683 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00007683 0085-7289 2432-079X https://doaj.org/article/342a6d50565a40f09aa82d4c4aee8c65 |
op_doi |
https://doi.org/10.15094/00007683 |
_version_ |
1766269728109625344 |