| Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
| 公開日 |
2003-09-01 |
| タイトル |
|
|
タイトル |
SC-related kilometric and hectometric radiations observed by the Akebono satellite in the polar regions |
|
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 |
10.15094/00006362 |
|
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) |
Shinbori,Atsuki
Ono,Takayuki
Iizima,Masahide
Kumamoto,Atsushi
Oya,Hiroshi
|
| 著者所属(英) |
|
|
言語 |
en |
|
値 |
Department of Geophysics, Graduate School of Science, Tohoku University/Department of Geophysics, Graduate School of Science, Tohoku University/Department of Geophysics, Graduate School of Science, Tohoku University/Department of Geophysics, Graduate School of Science, Tohoku University/Fukui University of Technology |
| 抄録(英) |
|
|
内容記述タイプ |
Other |
|
内容記述 |
Plasma wave phenomena associated with sudden commencements (SCs) were analyzed using the database of Akebono satellite observations that has been contributed to for more than 13 years, since March 1989. The plasma wave data from 263 satellite passages covering the onsets of SCs included 85 cases of auroral kilometric radiation (AKR) enhancement within a frequency range of 100kHz to 1.2MHz. The majority of the spectra of the SC-related AKR exhibited a two-banded structure with a harmonic relationship. The start time of the AKR enhancements tended to occur after the onset of the SCs, determined using the geomagnetic records of the Kakioka Magnetic Observatory, within a time range of 3 to 8min, with an average delay time of 5.26min. Based on this delay time feature, the magnetic disturbances associated with SCs were thought to propagate from the dayside magnetosphere to the nightside tail region where they compressed the plasma sheet. On the other hand, the data set reveals 19 cases of terrestrial hectometric radiation (THR) that were also associated with SCs appearing within a frequency range of 900kHz to 4MHz. The THR onset tended to occur 1 to 9min after the SC onset, with an average delay time of 5.84min. |
|
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 17,
p. 60-76,
発行日 2003-09
|
| 出版者 |
|
|
出版者 |
National Institute of Polar Research |
|
言語 |
en |
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