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The wave distribution functions of plasmaspheric ELF hiss: GEOS 1 observation in the equatorial region
https://nipr.repo.nii.ac.jp/records/2162
https://nipr.repo.nii.ac.jp/records/2162cd98921d-3b8d-40d8-b356-2886aadc5b80
名前 / ファイル | ライセンス | アクション |
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KJ00000012715 (2.2 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1987-03-01 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | The wave distribution functions of plasmaspheric ELF hiss: GEOS 1 observation in the equatorial region | |||||
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 | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
著者名(英) |
Hayakawa, Masashi
× Hayakawa, Masashi× Parrot, M.× Lefeuvre, F. |
|||||
著者所属(英) | ||||||
en | ||||||
Research Institute of Atmospherics, Nagoya University | ||||||
著者所属(英) | ||||||
en | ||||||
Laboratoire de Physique et Chimie de l'Environnement, CNRS | ||||||
著者所属(英) | ||||||
en | ||||||
Laboratoire de Physique et Chimie de l'Environnement, CNRS | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The wave distribution functions of plasmaspheric ELF hiss have been determined at the equatorial region inside the plasmapause, by applying the maximum entropy method to the data observed by GEOS 1 satellite. Three equatorial events have been analyzed, and it is found that just inside the plasmapuse, the wave normal direction θ of ELF hiss is nearly aligned with the magnetic field, and when the observing position is 0.3-0.5 R_e (R_e : earth's radius) inside from the plasmapause, there are two different groups of wave normal angles; one is a medium wave normal angle ranging from 20°to 60° and the other is a large wave normal in a range from 70°to 80°, slightly smaller than the Gendrin angle. The present direction finding results of equatorial ELF hiss have been extensively compared with the previous theoretical model to discuss the generation mechanism of plasmaspheric ELF hiss. Then, it is concluded that some of the plasmaspheric hiss emissions are generated by the cyclotron instability with θ≅0°, initially proposed by R. M. THORNE et al. (J. Geophys. Res., 78,1581,1973), but a considerable number of ELF hiss emissions seem to be generated at large wave normals. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00733561 | |||||
書誌情報 |
Memoirs of National Institute of Polar Research. Special issue 巻 47, p. 157-172, 発行日 1987-03 |