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  1. F300 宇宙地球環境研究所
  2. F300a 雑誌掲載論文
  3. 学術雑誌

Wavenumber Spectra of Atmospheric Gravity Waves and Medium‐Scale Traveling Ionospheric Disturbances Based on More Than 10‐Year Airglow Images in Japan, Russia, and Canada

http://hdl.handle.net/2237/00032618
http://hdl.handle.net/2237/00032618
97630901-f594-4bba-bbd6-afc6a35653c3
名前 / ファイル ライセンス アクション
2019JA026807.pdf 2019JA026807 (3.7 MB)
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 Wavenumber Spectra of Atmospheric Gravity Waves and Medium‐Scale Traveling Ionospheric Disturbances Based on More Than 10‐Year Airglow Images in Japan, Russia, and Canada
言語 en
著者 Tsuchiya, Satoshi

× Tsuchiya, Satoshi

WEKO 101163

en Tsuchiya, Satoshi

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Shiokawa, Kazuo

× Shiokawa, Kazuo

WEKO 101164

en Shiokawa, Kazuo

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Otsuka, Yuichi

× Otsuka, Yuichi

WEKO 101165

en Otsuka, Yuichi

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Nakamura, Takuji

× Nakamura, Takuji

WEKO 101166

en Nakamura, Takuji

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Yamamoto, Mamoru

× Yamamoto, Mamoru

WEKO 101167

en Yamamoto, Mamoru

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Connors, Martin

× Connors, Martin

WEKO 101168

en Connors, Martin

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Schofield, Ian

× Schofield, Ian

WEKO 101169

en Schofield, Ian

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Shevtsov, Boris

× Shevtsov, Boris

WEKO 101170

en Shevtsov, Boris

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Poddelsky, Igor

× Poddelsky, Igor

WEKO 101171

en Poddelsky, Igor

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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
抄録
内容記述 We have studied atmospheric gravity waves (AGWs) and nighttime medium‐scale traveling ionospheric disturbances (MSTIDs) by applying three‐dimensional spectral analysis technique to 557.7‐ and 630.0‐nm airglow images at Shigaraki (SGK) (35°N, 136°E, 1999–2017) and Rikubetsu (RIK) (44°N, 144°E, 1999–2017), Japan, Athabasca (ATH), Canada, (55°N, 247°E, 2005–2017), and Magadan (MGD), Russia (60°N, 151°E, 2008–2017), focusing on their horizontal wavenumber spectra. For the AGWs in 557.7‐nm images, the power spectra in summer are stronger than in other seasons, probably due to stronger tropospheric convection. The highest energy content of the waves are mostly at wavelengths between 20 and 300 km at MGD, ATH, and RIK, while it is above 200 km at SGK. The largest power spectral density is obtained at RIK at wavelengths of 30–100 km and then ATH. The slopes of the horizontal wavenumber spectra varies from −2.77 to −3.22. From the MSTIDs in 630.0‐nm images, the power spectra in summer at RIK and SGK are stronger than those in other seasons regardless of solar activity. The power spectra in solar quiet time are stronger than those in solar active time at all four stations. These features can be explained by the Perkins instability with coupling between sporadic E and F layers. The spectral slope decreases with increasing latitudes. Weak positive correlations were obtained between the daily wave power of AGWs in 557.7‐nm images and MSTIDs in 630.0‐nm images, suggesting that the MSTIDs in the thermosphere may be partially generated by the AGWs from the mesopause region.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 Wiley
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
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/10.1029/2019JA026807
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. e2019JA026807, 発行日 2020-03
著者版フラグ
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