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Generation region of polar cusp hiss observed by ISIS satellites
https://doi.org/10.15094/00006303
https://doi.org/10.15094/000063035f042a44-c9e8-481e-8013-7584b2bd783d
名前 / ファイル | ライセンス | アクション |
---|---|---|
KJ00000048043 (1.4 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 2000-08-01 | |||||
タイトル | ||||||
タイトル | Generation region of polar cusp hiss observed by ISIS satellites | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.15094/00006303 | |||||
ID登録タイプ | JaLC | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
著者名(英) |
Ondoh, Tadanori
× Ondoh, Tadanori |
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著者所属(英) | ||||||
en | ||||||
Space Earth Environment Laboratory | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Polar cusp VLF hiss of irregular spectra is observed mainly at geomagnetic invariant latitudes from 74° to 84°, and at geomagnetic local times from 10 to 14 hours. This occurrence region corresponds well to a region of cusp precipitations of lowenergy electrons below 1 keV. Changes of lower cutoff frequency of polar cusp hiss are related with plasma irregularities in the polar cusp ionosphere. The whistler-mode Cerenkov radiation from electrons below I keV is discussed for generating the polar cusp hiss, but this mechanism can not work in the polar cusp ionosphere for VLF frequencies much lower than a local electron gyrofrequency. The whistler-mode VLF Cerenkov radiation is generated from the electrons below 1 keV at high altitude(~6 R_E) cusp magnetosphere, where a local electron gyrofrequency is in VLF band. The whistler-mode cusp hiss generated at high altitudes will propagate along field-aligned cusp plasma down to a strong geomagnetic field region where the cusp structure fades out. Below this region, the whistler-mode hiss spreads over the polar cusp ionosphere where low energy electron precipitations produce ionospheric irregularities. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11397422 | |||||
書誌情報 |
Advances in polar upper atmosphere research 巻 14, p. 55-65, 発行日 2000-08 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |