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Multievent Analysis of Oscillatory Motion of Medium‐Scale Traveling Ionospheric Disturbances Observed by a 630‐nm Airglow Imager Over Tromsø
http://hdl.handle.net/2237/00032617
http://hdl.handle.net/2237/0003261761ec095e-05da-4cb2-a4ea-51fa8f3286a4
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
2019JA027598 (47.3 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-09-14 | |||||
| タイトル | ||||||
| タイトル | Multievent Analysis of Oscillatory Motion of Medium‐Scale Traveling Ionospheric Disturbances Observed by a 630‐nm Airglow Imager Over Tromsø | |||||
| 言語 | en | |||||
| 著者 |
Yadav, Sneha
× Yadav, Sneha× Shiokawa, K.× Oyama, S.× Otsuka, Y. |
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| アクセス権 | ||||||
| アクセス権 | open access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
| 権利 | ||||||
| 言語 | en | |||||
| 権利情報 | © 2020 American Geophysical Union | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | MSTIDs | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | airglow | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | aurora | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | high‐latitude ionosphere | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We present a comprehensive investigation on the propagation characteristics of duskside medium‐scale traveling ionospheric disturbances (MSTIDs) using 630.0‐nm airglow emissions over Tromsø (69.6°N, 19.2°E; magnetic latitude: 66.7°N). The unique points of our observation are (1) duskside MSTIDs primarily exhibited eastward motion under quiet conditions but turned to the westward direction associated with geomagnetic disturbances, (2) the westward moving MSTIDs again turned to the eastward direction when the geomagnetic disturbance ceased, (3) the turning of MSTIDs to the westward direction was invariably associated with an increase of the northward component of the magnetic field observed by the local ground‐based magnetometers and with the equatorward expansion of the auroral oval, and (4) the Super Dual Auroral Radar Network convection maps revealed that the location of Tromsø was inside (outside) the duskside convection cell during the time of appearance of westward (eastward) moving MSTIDs. The average eastward and westward velocities of MSTIDs were ~25–80 and ~40–140 m/s, respectively. The Doppler shift measurement of the 630‐nm airglow by a Fabry‐Perot interferometer at Tromsø showed that northeastward winds were predominant during the appearance of eastward moving MSTIDs. These experimental evidences suggest that the oscillatory motion of MSTIDs over high latitudes is driven by the convection electric field. The MSTIDs tend to move eastward under geomagnetically quiet conditions but show westward motion under the influence of convection electric field associated with auroral activities in the duskside of two‐cell convection pattern. | |||||
| 言語 | en | |||||
| 出版者 | ||||||
| 出版者 | Wiley | |||||
| 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 | journal article | |||||
| 出版タイプ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1029/2019JA027598 | |||||
| ISSN（print） | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 2169-9380 | |||||
| 書誌情報 |
en : Journal of Geophysical Research: Space Physics 巻 125, 号 3, p. e2019JA027598, 発行日 2020-03 |
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| 著者版フラグ | ||||||
| 値 | publisher | |||||
