昭和基地におけるVLFエミッション観測(1970-1971) : I.オーロラ・ヒスとオーロラ(日本南極地域観測隊の報告)
VLF emissions were observed at Syowa Station by the 11th wintering party of the Japanese Antarctic Research Expedition in 1970-1971. The present paper deals particularly with the records of auroral hiss emissions, which are believed to be emitted by precipitating electrons in the aurora. It is shown...
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東京大学理学部地球物理学教室
1973
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ftnipr:oai:nipr.repo.nii.ac.jp:00007699 2023-07-16T03:53:03+02:00 昭和基地におけるVLFエミッション観測(1970-1971) : I.オーロラ・ヒスとオーロラ(日本南極地域観測隊の報告) ショウワ キチ ニオケル VLF エミッション カンソク 1970 1971 1 オーロラヒス ト オーロラ ニホン ニホン ナンキョク チイキ カンソクタイ ノ ホウコク 巻田 和男 福西 浩 Kazuo MAKITA Hiroshi FUKUNISHI 1973-03 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=7699 http://id.nii.ac.jp/1291/00007699/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=7699&item_no=1&attribute_id=18&file_no=1 ja jpn 東京大学理学部地球物理学教室 Geophysical Institute, University of Tokyo 国立極地研究所 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=7699 http://id.nii.ac.jp/1291/00007699/ AN00181831 00857289 南極資料, 46, 1-15(1973-03) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=7699&item_no=1&attribute_id=18&file_no=1 551.510.535/.537 Departmental Bulletin Paper P(論文) 1973 ftnipr 2023-06-24T19:39:08Z VLF emissions were observed at Syowa Station by the 11th wintering party of the Japanese Antarctic Research Expedition in 1970-1971. The present paper deals particularly with the records of auroral hiss emissions, which are believed to be emitted by precipitating electrons in the aurora. It is shown that the power spectrum of the hiss emissions is confined in the low-frequency range between 4-32kHz if the auroral arcs lie near the poleward horizon of Syowa Station, while it is extended to frequencies as high as 128kHz if the active auroral arcs appear near the zenith. This can be explained by differences in the height of the emission region and in the propagation path of the hiss in the ionosphere : the high-frequency (~64kHz) hiss is emitted at low altitudes of 1000-1500km, its propagation path being limited to a narrow region near the location of the auroral arcs, while the low-frequency (~8kHz) hiss is emitted at higher altitudes of 3000-3500km, its propagation path spreading widely due to the refraction effect in the ionosphere. Report Antarc* Antarctic National Institute of Polar Research Repository, Japan Antarctic Syowa Station |
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Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
Japanese |
topic |
551.510.535/.537 |
spellingShingle |
551.510.535/.537 巻田 和男 福西 浩 Kazuo MAKITA Hiroshi FUKUNISHI 昭和基地におけるVLFエミッション観測(1970-1971) : I.オーロラ・ヒスとオーロラ(日本南極地域観測隊の報告) |
topic_facet |
551.510.535/.537 |
description |
VLF emissions were observed at Syowa Station by the 11th wintering party of the Japanese Antarctic Research Expedition in 1970-1971. The present paper deals particularly with the records of auroral hiss emissions, which are believed to be emitted by precipitating electrons in the aurora. It is shown that the power spectrum of the hiss emissions is confined in the low-frequency range between 4-32kHz if the auroral arcs lie near the poleward horizon of Syowa Station, while it is extended to frequencies as high as 128kHz if the active auroral arcs appear near the zenith. This can be explained by differences in the height of the emission region and in the propagation path of the hiss in the ionosphere : the high-frequency (~64kHz) hiss is emitted at low altitudes of 1000-1500km, its propagation path being limited to a narrow region near the location of the auroral arcs, while the low-frequency (~8kHz) hiss is emitted at higher altitudes of 3000-3500km, its propagation path spreading widely due to the refraction effect in the ionosphere. |
format |
Report |
author |
巻田 和男 福西 浩 Kazuo MAKITA Hiroshi FUKUNISHI |
author_facet |
巻田 和男 福西 浩 Kazuo MAKITA Hiroshi FUKUNISHI |
author_sort |
巻田 和男 |
title |
昭和基地におけるVLFエミッション観測(1970-1971) : I.オーロラ・ヒスとオーロラ(日本南極地域観測隊の報告) |
title_short |
昭和基地におけるVLFエミッション観測(1970-1971) : I.オーロラ・ヒスとオーロラ(日本南極地域観測隊の報告) |
title_full |
昭和基地におけるVLFエミッション観測(1970-1971) : I.オーロラ・ヒスとオーロラ(日本南極地域観測隊の報告) |
title_fullStr |
昭和基地におけるVLFエミッション観測(1970-1971) : I.オーロラ・ヒスとオーロラ(日本南極地域観測隊の報告) |
title_full_unstemmed |
昭和基地におけるVLFエミッション観測(1970-1971) : I.オーロラ・ヒスとオーロラ(日本南極地域観測隊の報告) |
title_sort |
昭和基地におけるvlfエミッション観測(1970-1971) : i.オーロラ・ヒスとオーロラ(日本南極地域観測隊の報告) |
publisher |
東京大学理学部地球物理学教室 |
publishDate |
1973 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=7699 http://id.nii.ac.jp/1291/00007699/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=7699&item_no=1&attribute_id=18&file_no=1 |
geographic |
Antarctic Syowa Station |
geographic_facet |
Antarctic Syowa Station |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=7699 http://id.nii.ac.jp/1291/00007699/ AN00181831 00857289 南極資料, 46, 1-15(1973-03) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=7699&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1771548366106263552 |