| Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
| 公開日 |
2000-08-01 |
| タイトル |
|
|
タイトル |
Characteristics of solar flare effect in the high-latitude ionosphere as observed by the SuperDARN radars |
|
言語 |
en |
| 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 |
10.15094/00006304 |
|
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) |
Hosokawa, Keisuke
Iyemori, Toshihiko
Yukimatu, Akira Sessai
Sato, Natsuo
|
| 著者所属(英) |
|
|
言語 |
en |
|
値 |
Department of Geophysics, Graduate School of Science, Kyoto University |
| 著者所属(英) |
|
|
言語 |
en |
|
値 |
Data Analysis Center for Geomagnetism Kyoto, Graduate School of Science, Kyoto University |
| 著者所属(英) |
|
|
言語 |
en |
|
値 |
National Institute of Polar Reserch |
| 著者所属(英) |
|
|
言語 |
en |
|
値 |
National Institute of Polar Reserch |
| 抄録(英) |
|
|
内容記述タイプ |
Other |
|
内容記述 |
Sudden perturbations of the ground magnetic fields at solar flares are called geomagnetic Solar Flare Effect (SFE). An SFE is the extra ionization produced by the X-ray emission from a solar flare. We analyzed 10 intense SFE events from 1996 to 1998 using SuperDARN HF radar network and other instruments located in the northern hemisphere. Two typical ionospheric signatures associated with the solar flares are revealed, one is a sudden fade-out of backscatter echoes, and the other is an appearance or variation of field-aligned irregularities. Sudden fade-out is observed only in the sunlit hemisphere, and the appearance or variation of irregularities are observed only near the terminator. In addition, we investigated one event out of ten in detail and found that there exists a discontinuity of the electric field or conductivity around the irregularity. This fact suggests that the variation of conductivity or electric field in the E region could affect the irregularity formation in the F region. |
|
言語 |
en |
| 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. 66-75,
発行日 2000-08
|
| 出版者 |
|
|
出版者 |
National Institute of Polar Research |
|
言語 |
en |
KJ00000048044 (1.4 MB)
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