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Observations of Low‐Latitude Traveling Ionospheric Disturbances by a 630.0‐nm Airglow Imager and the CHAMP Satellite Over Indonesia
http://hdl.handle.net/2237/00030673
http://hdl.handle.net/2237/000306731d4da847-778a-4e31-b020-ffbb5e09b096
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
Moral_et_al-2019-Journal_of_Geophysical_Research__Space_Physics (3.3 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-09-11 | |||||
| タイトル | ||||||
| タイトル | Observations of Low‐Latitude Traveling Ionospheric Disturbances by a 630.0‐nm Airglow Imager and the CHAMP Satellite Over Indonesia | |||||
| 言語 | en | |||||
| 著者 |
Moral, Aysegul Ceren
× Moral, Aysegul Ceren× Shiokawa, Kazuo× Suzuki, Shin× Liu, Huixin× Otsuka, Yuichi× Yatini, Clara Yoko |
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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 | © 2019 American Geophysical Union | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We report the first comparison of ground and satellite measurements of low‐latitude traveling ionospheric disturbances (TIDs). Three TID events were simultaneously observed by a 630.0‐nm airglow imager and the CHAllenging Minisatellite Payload (CHAMP) satellite at Kototabang, Indonesia (geographic coordinates: 0.2° S, 100.3° E, geomagnetic latitude: 10.6° S). In 630.0‐nm airglow images of all three events, there are clear southward‐moving structures. Events 1 and 2 are a single pulse with horizontal scales of ∼500–1,000 km. Event 3 shows five wave fronts with a horizontal scale size of 500–1,000 km. All three TIDs are medium‐scale TIDs. Horizontal wavelengths of both airglow intensity at an average emission altitude of 250 km and CHAMP neutral density variations measured at 400 km are estimated by fitting a sinusoidal function to the observed data. The estimated horizontal wavelengths for airglow and neutral density data are 1,031 and 880 km for event 1 and 560 and 420 km for event 3, respectively. These values between airglow and CHAMP are comparable, suggesting both instruments are observing the same wave. For event 1, the CHAMP electron density mapped along the geomagnetic field line onto the airglow altitude does not show wave structure similar to the airglow variation. For events 2 and 3, the plasma density did not show wavy structures similar to the waves seen in the airglow image and CHAMP neutral density. These results suggest that the TIDs observed in airglow images are not caused by ionospheric plasma instability but by gravity waves in the thermosphere. | |||||
| 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/10.1029/2018JA025634 | |||||
| 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 124, 号 3, p. 2198-2212, 発行日 2019-03-07 |
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| 著者版フラグ | ||||||
| 値 | publisher | |||||
