Dynamics of the mesospheric sodium layer in Antarctica: Lidar measurements at Syowa Station, 1985

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概要

• 論文の詳細を見る

• Lidar measurements of the mesospheric sodium layer were made on 42 nights from April to October in 1985 during the wintering period of the 26th Japanese Antarctic Research Expedition (JARE-26) at Syowa Station, Antarctica (69°00'S, 39°35'E). This work was carried out as a part of the Middle Atmosphere Program (MAP). There were no significant seasonal variations in sodium abundance. Especially, the enhancement of abundance in winter was not observed. These results differ from those obtained at midlatitudes in the northern hemisphere. However, it is interesting that the sodium abundance oscillated with a period of about 36 days. As for the nocturnal variations of the sodium layer, the semidiurnal oscillation in the abundance was not detectable, but the wavelike structure due to gravity wave activity was frequently observed in the sodium vertical profile. Moreover, it was found that the sodium layer was perturbed during an auroral breakup event.

• 国立極地研究所の論文

著者

• Iwasaka Yasunobu

  Water Research Institute Nagoya University

• Iwasaka Y

  Nagoya Univ. Nagoya Jpn

• Iwasaka Y

  Solar-terrestrial Environment Laboratory Nagoya University

• Kawaguchi Sadao

  Nagaoka National College Of Technology

• KAWAGUCHI Sadao

  National Institute of Polar Research

• Iwasaka Yasunobu

  Graduate School Of Environmental Studies Nagoya Univ.

• Iwasaka Yasunobu

  Unmanned Aircraft Planning Group:solar Terrestrial Environmental Laboratory Nagoya University:nihon

• Fukunishi Hiroshi

  Upper Atmosphere and Space Research Laboratory, Faculty of Science, Tohoku University

• Nomura Akio

  Faculty of Engineering, Shinshu University

• Kano Tetsuo

  Faculty of Engineering, Shinshu University

• Hirasawa Takeo

  National Institute of Polar Research

• Iwasaka Yasunobu

  Water Research Institue Nagoya University

• Kobayashi Shunichi

  Research Institute Of Hazards In Snowy Area Niigata University

• Nomura A

  Faculty Of Engineering Shinshu University

• Kano T

  Faculty Of Engineering Shinshu University

• Kano Tetsuo

  Faculty Of Engineering Shinshu University

• Fukunishi Hiroshi

  Faculty Of Science Tohoku University

• Fukunishi Hiroshi

  Upper Atmosphere And Space Research Laboratory Tohoku University

• Fukunishi Hiroshi

  Upper Atmosphere And Space Research Laboratory Faculty Of Science Tohoku University

• Koga S

  National Inst. Resources And Environment Tsukuba

• Kawaguchi Sadao

  Nagoya University

• Nomura Akio

  Faculty Of Engineering Shinshu University

• Shinbori K

  Nagaoka National College Of Technology

• Fukunishi Hiroshi

  Upper Atmosphere and Space Research Laboratory, Tohoku University

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