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Sodium lidar system for observing Antarctic mesopause temperature over Syowa Station
https://doi.org/10.15094/00004269
https://doi.org/10.15094/00004269856798da-bfa2-4b83-a6bc-f27b753960e5
名前 / ファイル | ライセンス | アクション |
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KJ00000035972 (1.1 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1998-12-01 | |||||
タイトル | ||||||
タイトル | Sodium lidar system for observing Antarctic mesopause temperature over Syowa Station | |||||
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 | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.15094/00004269 | |||||
ID登録タイプ | JaLC | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
著者名(英) |
Kawahara, Takuya D.
× Kawahara, Takuya D.× Kitahara, Tsukasa× Kobayashi, Fumitoshi× Saito, Yasunori× Nomura, Akio |
|||||
著者所属(英) | ||||||
en | ||||||
Department of Information Engineering, Shinshu University/Department of Information Engineering, Shinshu University/Department of Information Engineering, Shinshu University/Department of Information Engineering, Shinshu University/Department of Information Engineering, Shinshu University | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | A new sodium lidar will be installed at Syowa Station (69°00′S, 39°35′E) from 1999 to 2001 for the observation campaign of the Antarctic mesopause region. In the campaign the lidar is operated with HF and MF radars, a Fabry-Perot Doppler imager and several other auroral imagers. This is the first lidar measurement of the mesopause temperature in Antarctica and it will reveal the characteristics of gravity wave activities and the energetic interaction between the lower thermosphere and the upper mesosphere through the mesopause region over Antarctica. For the temperature observations, a new laser transmitter is developed using injection-seeded Nd : YAG lasers. The principal advantage of this instrument is that the transmitter is simple and a reliable solid state system which requires less maintenance compared with ordinary dye laser type transmitters. This allows us to construct and operate it easily in Antarctica. As a result of sum frequency of seeded 1064nm and 1319nm laser pulses, narrow-band pulsed laser tuned to sodium D_2 line (589.1583nm) is effectively emitted with a linewidth of below 0.1pm. To eliminate temperature errors caused by sodium density variations, an AO frequency shifter is adopted to shift frequencies within sodium D_2 spectrum on a pulse to pulse basis. For daytime observations, an extreme narrowband (FWHM=0.002nm) Faraday filter is employed in the receiving system to reject sky background light. The estimated spatial resolution, temporal resolution and temperature accuracy of this system are 200m, <5K and 10min, respectively. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10756224 | |||||
書誌情報 |
Proceedings of the NIPR Symposium on Upper Atmosphere Physics 巻 12, p. 121-130, 発行日 1998-12 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |