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Seasonal variation of inter-hemispheric field-aligned currents deduced from time-series analysis of the equatorial geomagnetic field data during solar cycle 23-24
http://hdl.handle.net/10228/00009069
http://hdl.handle.net/10228/00009069d3063d51-7d13-443f-b103-d263ed46235d
| 名前 / ファイル | ライセンス | アクション |
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LaSEINE-2021_015.pdf (1.5 MB)
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| Item type | 学術雑誌論文 = Journal Article(1) | |||||||||||||
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| 公開日 | 2023-02-02 | |||||||||||||
| 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 | Seasonal variation of inter-hemispheric field-aligned currents deduced from time-series analysis of the equatorial geomagnetic field data during solar cycle 23-24 | |||||||||||||
| 言語 | ||||||||||||||
| 言語 | eng | |||||||||||||
| 著者 |
Ranasinghe, Manjula
× Ranasinghe, Manjula× 藤本, 晶子
WEKO
25636
× Yoshikawa, Akimasa× Jayaratne, Chandana |
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| 抄録 | ||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||
| 内容記述 | The east–west component of magnetic field variation (∆D-component) at Davao station (Philippines, geomagnetic latitude: – 2.22˚N) are used to investigate the characteristics of the long-term Inter-Hemispheric Field-Aligned Currents (IHFACs) based on the time-series analysis from August 1998 to July 2020. Recent in situ satellite and ground-based observations have reported that dusk-side current polarity of IHFAC is often opposite to that of the noon IHFAC, being inconsistent with Fukushima's IHFACs model. We investigated the consistency of the dusk-side IHFAC polarity derived from the observations with the polarity expected from Fukushima’s IHFACs model and examined the solar cycle dependence of IHFACs. It was confirmed that the dusk-side IHFACs during June and December solstices flow in the same direction of the noontime IHFACs, which was consistent with the IHFAC polarities suggested by the Fukushima model. The dusk-side IHFACs around March and September–November months disagreed with the Fukushima model. The ∆D variations clearly showed seasonal asymmetry in the dawn and noon sectors, whereas the ∆D variations in the dusk sector demonstrated seasonal symmetry. Solar cycle dependence of IHFACs was exhibited in the dusk sector. For the dawn and noon sectors, the yearly peak-to-peak ∆D amplitude in the later solar cycle SC24 decreased by about 35% in comparison with the earlier solar cycle SC23. In contrast, the dusk-side yearly peak-to-peak ∆D amplitude increased by about 200%. The dusk-side IHFAC yearly amplitude tended to be in inverse proportion to solar activity. | |||||||||||||
| 書誌情報 |
Earth, Planets and Space 巻 73, p. 146-1-146-10, 発行日 2021-07-21 |
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| 出版社 | ||||||||||||||
| 出版者 | Springer | |||||||||||||
| DOI | ||||||||||||||
| 関連タイプ | isIdenticalTo | |||||||||||||
| 識別子タイプ | DOI | |||||||||||||
| 関連識別子 | https://doi.org/10.1186/s40623-021-01481-6 | |||||||||||||
| 日本十進分類法 | ||||||||||||||
| 主題Scheme | NDC | |||||||||||||
| 主題 | 450 | |||||||||||||
| ISSN | ||||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||||
| 収録物識別子 | 1880-5981 | |||||||||||||
| 著作権関連情報 | ||||||||||||||
| 権利情報 | Copyright (c) The Author(s) 2021. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. | |||||||||||||
| キーワード | ||||||||||||||
| 主題Scheme | Other | |||||||||||||
| 主題 | Inter-hemispheric field-aligned currents (IHFACs) | |||||||||||||
| キーワード | ||||||||||||||
| 主題Scheme | Other | |||||||||||||
| 主題 | Ground-based magnetometer data | |||||||||||||
| キーワード | ||||||||||||||
| 主題Scheme | Other | |||||||||||||
| 主題 | Equatorial magnetic field | |||||||||||||
| キーワード | ||||||||||||||
| 主題Scheme | Other | |||||||||||||
| 主題 | Solar cycle SC23 and SC24 | |||||||||||||
| キーワード | ||||||||||||||
| 主題Scheme | Other | |||||||||||||
| 主題 | MAGDAS/CPMN | |||||||||||||
| キーワード | ||||||||||||||
| 主題Scheme | Other | |||||||||||||
| 主題 | Seasonal variations | |||||||||||||
| キーワード | ||||||||||||||
| 主題Scheme | Other | |||||||||||||
| 主題 | Fukushima’s model | |||||||||||||
| 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 | |||||||||||||
| 連携ID | ||||||||||||||
| 値 | 10844 | |||||||||||||
| 著者別名 | ||||||||||||||
| 姓名 | Ranasinghe, M. | |||||||||||||
| 著者別名 | ||||||||||||||
| 姓名 | Fujimoto, Akiko | |||||||||||||
| 言語 | en | |||||||||||||
| 姓名 | 藤本, 晶子 | |||||||||||||
| 言語 | ja | |||||||||||||
| 姓名 | フジモト, アキコ | |||||||||||||
| 言語 | ja-Kana | |||||||||||||
| 姓 | Fujimoto | |||||||||||||
| 言語 | en | |||||||||||||
| 姓 | 藤本 | |||||||||||||
| 言語 | ja | |||||||||||||
| 姓 | フジモト | |||||||||||||
| 言語 | ja-Kana | |||||||||||||
| 名 | Akiko | |||||||||||||
| 言語 | en | |||||||||||||
| 名 | 晶子 | |||||||||||||
| 言語 | ja | |||||||||||||
| 名 | アキコ | |||||||||||||
| 言語 | ja-Kana | |||||||||||||
| 著者別名 | ||||||||||||||
| 姓名 | Yoshikawa, A. | |||||||||||||
| 著者別名 | ||||||||||||||
| 姓名 | Jayarante, C. | |||||||||||||
