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アイテム
Long-term EEJ variations by using the improved EE-index
http://hdl.handle.net/10228/00007447
http://hdl.handle.net/10228/00007447a682378e-4061-4c0d-b48e-05c40429d841
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
SG_v11_No1_2016-pp-37-47.pdf (1.6 MB)
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| アイテムタイプ | 学術雑誌論文 = Journal Article(1) | |||||||||||||
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| 公開日 | 2019-11-22 | |||||||||||||
| 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 | journal article | |||||||||||||
| タイトル | ||||||||||||||
| タイトル | Long-term EEJ variations by using the improved EE-index | |||||||||||||
| 言語 | ||||||||||||||
| 言語 | eng | |||||||||||||
| 著者 |
藤本, 晶子
× 藤本, 晶子
WEKO
25636
× Uozumi, Teiji× Abe, Shuji× Matsushita, Hiroki× Imajo, Shun× Ishitsuka, Jose K.× Yoshikawa, Akimasa |
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| 抄録 | ||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||
| 内容記述 | In 2008, International Center for Space Weather Science and Education, Kyushu University (ICSWSE) proposed the EE-index, which is an index to monitor the equatorial geomagnetic phenomena. EE-index has been improved with the development of the MAGnetic Data Acquisition System and the Circum-pan Pacific Magnetometer Network (MAGDAS/CPMN) and the enormous archive of MAGDAS/CPMN data over 10 years since the initial article. Using the improved EE-index, we examined the solar cycle variation of equatorial electrojet (EEJ) by the time series analysis for EUEL (one part of EE-index) at Ancon in Peru and the solar activity from September 18, 1998 to March 31, 2015. We found that the long-term variation of daily EEJ peak intensity has a trend similar to that of F10.7 (the solar activity). The power spectrum of the daily EEJ peak has clearly two dominant peaks throughout the analysis interval: 14.5 days and 180 days (semi-annual). The solar cycle variation of daily EEJ peak correlates well with that of F10.7 (the correlation coefficient 0.99). We conclude that the daily EEJ peak intensity is roughly determined as the summation of the long-period trend of the solar activity resulting from the solar cycle and day-to-day variations caused by various sources such as lunar tides, geometric effects, magnetospheric phenomena and atmospheric phenomena. This work presents the primary evidence for solar cycle variations of EEJ on the long-term study of the EE-index. | |||||||||||||
| 備考 | ||||||||||||||
| 内容記述タイプ | Other | |||||||||||||
| 内容記述 | 2015 UN/Japan Workshop on Space Weather, 2-6 March 2015, Fukuoka, Japan | |||||||||||||
| 書誌情報 |
Sun and Geosphere 巻 11, 号 1, p. 37-47, 発行日 2016 |
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| 出版社 | ||||||||||||||
| 出版者 | BBC SWS | |||||||||||||
| 日本十進分類法 | ||||||||||||||
| 主題Scheme | NDC | |||||||||||||
| 主題 | 451 | |||||||||||||
| ISSN | ||||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||||
| 収録物識別子 | 2367-8852 | |||||||||||||
| 著作権関連情報 | ||||||||||||||
| 権利情報 | Copyright (c) 2016 BBSCS RN SWS. All rights reserved | |||||||||||||
| キーワード | ||||||||||||||
| 主題Scheme | Other | |||||||||||||
| 主題 | EE-index | |||||||||||||
| キーワード | ||||||||||||||
| 主題Scheme | Other | |||||||||||||
| 主題 | equatorial electrojet | |||||||||||||
| キーワード | ||||||||||||||
| 主題Scheme | Other | |||||||||||||
| 主題 | MAGDAS/CPMN | |||||||||||||
| キーワード | ||||||||||||||
| 主題Scheme | Other | |||||||||||||
| 主題 | space weather | |||||||||||||
| 出版タイプ | ||||||||||||||
| 出版タイプ | VoR | |||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||||
| 査読の有無 | ||||||||||||||
| 値 | yes | |||||||||||||
| 研究者情報 | ||||||||||||||
| URL | https://hyokadb02.jimu.kyutech.ac.jp/html/100001151_ja.html | |||||||||||||
| 論文ID（連携） | ||||||||||||||
| 値 | 10346139 | |||||||||||||
| 連携ID | ||||||||||||||
| 値 | 7949 | |||||||||||||
| 情報源 | ||||||||||||||
| 識別子タイプ | URI | |||||||||||||
| 関連識別子 | http://www.sungeosphere.org/ | |||||||||||||
| 関連名称 | http://www.sungeosphere.org/ | |||||||||||||
