| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2010-01-04 |
| タイトル |
|
|
タイトル |
Latitudinal structure of the nightside region 1 field-aligned current observed from the EXOS-D satellite |
| 資源タイプ |
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|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 著者 |
YAMAMOTO, Takashi
INOUE, Shoshi
OZAKI, Masao
|
| 著者(機関) |
|
|
値 |
Department of Earth and Planetary Physics, University of Tokyo |
| 著者(機関) |
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|
値 |
Aichi College of Technology, (present Address) Faculty of Education, Iwate University |
| 著者(機関) |
|
|
値 |
Institute of Industrial Science, University of Tokyo, (present address)Tokyo University of Agriculture |
| 登録日 |
|
|
日付 |
2010-01-04 |
| 書誌情報 |
Advances in polar upper atmosphere research
巻 13,
p. 105-118,
発行日 1999-01-01
|
| ISSN |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
1345-1065 |
| Abstract |
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|
内容記述タイプ |
Other |
|
内容記述 |
The average pattern of region 1 field-aligned current (FAC) of IIJIMA and POTEMRA (J. Geophys. Res., 81, 2165, 1976a; J. Geophys. Res., 83, 599, 1978) spans 2-3° in magnetic latitude. Using the magnetic field data acquired with the EXOS-D satellite, we notice that sharp variations of magnetic field perturbation, showing the high current densities of several micro-amperes per squared meter at the ionospheric height, are included in the region 1 current zone. In this paper, we focus our analysis on a sharp gradient of magnetic field change within 1° in latitude. In the 20-04 MLT sector, the thin current sheet as an important part of the region 1 FAC system is often found to be just equatorward of the boundary FAC system (FuKUNism et al, J. Geophys. Res., 98, 11235, 1993). A statistical survey of more than 200 satellite's crossings of the region 1 zone (in the 17-05 MLT range) shows that about 60% of the identified region 1 current systems have the latitudinal structure of a thin (on average, 0.5°) current sheet with current intensity greater than one third of the total FAC intensity of the region 1 system. |
| 出版者 |
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|
出版者 |
National Institute of Polar Research |
| 権利 |
|
|
権利情報 |
(C) 1999 National Institute of Polar Research |
| 著者版フラグ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
apur-arv13p105-118.pdf (2.1 MB)
