Characteristics of VLF Saucers and Auroral Hisses from ISIS Satellites Received at Syowa Station, Antarctica
P(論文) Properties of VLF saucers and auroral hisses have been studied by using ISIS VLF electric field data (50Hz-30kHz) received at Syowa Station, Antarctica. Source altitudes of VLF saucers are obtained from frequency-time spectra of VLF saucers by assuming the limiting ray model. The source distan...
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ftnipr:oai:nipr.repo.nii.ac.jp:00001121 2024-09-09T19:05:50+00:00 Characteristics of VLF Saucers and Auroral Hisses from ISIS Satellites Received at Syowa Station, Antarctica Ondoh, Tadanori Nakamura, Yoshikatsu Murakami, Toshimitsu 1981-03 application/pdf https://nipr.repo.nii.ac.jp/record/1121/files/KJ00000011647.pdf eng eng Memoirs of National Institute of Polar Research. Special issue 18 54 71 AA00733561 https://nipr.repo.nii.ac.jp/record/1121/files/KJ00000011647.pdf 1981 ftnipr 2024-06-17T04:00:22Z P(論文) Properties of VLF saucers and auroral hisses have been studied by using ISIS VLF electric field data (50Hz-30kHz) received at Syowa Station, Antarctica. Source altitudes of VLF saucers are obtained from frequency-time spectra of VLF saucers by assuming the limiting ray model. The source distances of VLF saucers are less than about 800km below the satellite. VLF saucers occur around the high-and low-latitude ends of the auroral hiss region. The active auroral hiss and the stable auroral hiss are classified according to the variability of the narrow-band intensity data processed from ISIS VLF tapes. The frequent occurrence region of the former agrees well with the usual auroral zone, while the latter occurs at invariant latitude from about 70°to about 80°both on the day and night sides. The properties of the stable auroral hiss have some similarities to those of the precipitating low-energy electrons, the so-called polar rain, in occurrence region and in intensity. The narrow-band 5kHz hiss occurs often at invariant latitudes of 61°±5°, which are close to the average plasmapause latitude, during the daytime and nighttime. departmental bulletin paper Other/Unknown Material Antarc* Antarctica Memoirs of National Institute of Polar Research Polar Research National Institute of Polar Research Repository, Japan Syowa Station |
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Open Polar |
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National Institute of Polar Research Repository, Japan |
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ftnipr |
language |
English |
description |
P(論文) Properties of VLF saucers and auroral hisses have been studied by using ISIS VLF electric field data (50Hz-30kHz) received at Syowa Station, Antarctica. Source altitudes of VLF saucers are obtained from frequency-time spectra of VLF saucers by assuming the limiting ray model. The source distances of VLF saucers are less than about 800km below the satellite. VLF saucers occur around the high-and low-latitude ends of the auroral hiss region. The active auroral hiss and the stable auroral hiss are classified according to the variability of the narrow-band intensity data processed from ISIS VLF tapes. The frequent occurrence region of the former agrees well with the usual auroral zone, while the latter occurs at invariant latitude from about 70°to about 80°both on the day and night sides. The properties of the stable auroral hiss have some similarities to those of the precipitating low-energy electrons, the so-called polar rain, in occurrence region and in intensity. The narrow-band 5kHz hiss occurs often at invariant latitudes of 61°±5°, which are close to the average plasmapause latitude, during the daytime and nighttime. departmental bulletin paper |
author |
Ondoh, Tadanori Nakamura, Yoshikatsu Murakami, Toshimitsu |
spellingShingle |
Ondoh, Tadanori Nakamura, Yoshikatsu Murakami, Toshimitsu Characteristics of VLF Saucers and Auroral Hisses from ISIS Satellites Received at Syowa Station, Antarctica |
author_facet |
Ondoh, Tadanori Nakamura, Yoshikatsu Murakami, Toshimitsu |
author_sort |
Ondoh, Tadanori |
title |
Characteristics of VLF Saucers and Auroral Hisses from ISIS Satellites Received at Syowa Station, Antarctica |
title_short |
Characteristics of VLF Saucers and Auroral Hisses from ISIS Satellites Received at Syowa Station, Antarctica |
title_full |
Characteristics of VLF Saucers and Auroral Hisses from ISIS Satellites Received at Syowa Station, Antarctica |
title_fullStr |
Characteristics of VLF Saucers and Auroral Hisses from ISIS Satellites Received at Syowa Station, Antarctica |
title_full_unstemmed |
Characteristics of VLF Saucers and Auroral Hisses from ISIS Satellites Received at Syowa Station, Antarctica |
title_sort |
characteristics of vlf saucers and auroral hisses from isis satellites received at syowa station, antarctica |
publishDate |
1981 |
url |
https://nipr.repo.nii.ac.jp/record/1121/files/KJ00000011647.pdf |
geographic |
Syowa Station |
geographic_facet |
Syowa Station |
genre |
Antarc* Antarctica Memoirs of National Institute of Polar Research Polar Research |
genre_facet |
Antarc* Antarctica Memoirs of National Institute of Polar Research Polar Research |
op_relation |
Memoirs of National Institute of Polar Research. Special issue 18 54 71 AA00733561 https://nipr.repo.nii.ac.jp/record/1121/files/KJ00000011647.pdf |
_version_ |
1809819827265601536 |