Measurement of Auroral Electric Fields with an Antarctic Sounding Rocket S-310JA-7. 2.AC Electric Field
スポンサーリンク
概要
- 論文の詳細を見る
A sounding rocket with double-probes for DC electric field and AC electric field (5-220Hz band) measurement was launched from Syowa Station in Antarctica around the onset time of an intense auroral substorm. The rocket first encountered a poleward expanding auroral arc, where intense (1.4mV/m) and broad band electric field fluctuations were measured around the arc at the altitude of 105-128km. The rocket then moved across an equatorward drifting arc, where narrow-band electric field fluctuations around 40Hz were measured at the altitude of ∿190km. Considering the DC electric field data and the electron density gradient observed on the same rocket, it is likely that the former fluctuation is due to drift waves or ion acoustic waves excited by the cross-field type or two-stream type plasma instability, while the latter is due to electrostatic ion cyclotron waves excited by fieldaligned currents.
- 国立極地研究所の論文
著者
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Yamagishi Hisao
National Institude of Polar Research
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Fukunishi Hiroshi
Upper Atmosphere and Space Research Laboratory, Faculty of Science, Tohoku University
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Fukunishi Hiroshi
National Institute of Polar Research
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Hirasawa Takeo
National Institute of Polar Research
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Ogawa Toshio
Geophysical Institute, Kyoto University
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Ogawa Tadahiko
Radio Research Laboratory
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Ogawa Toshio
Faculty Of Engineering Toyama Prefectural University
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Ogawa Tadahiko
Faculty Of Engineering Toyama Prefectural University
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Fukunishi Hiroshi
Faculty Of Science Tohoku University
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Fukunishi Hiroshi
Upper Atmosphere And Space Research Laboratory Tohoku University
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Fukunishi Hiroshi
Upper Atmosphere And Space Research Laboratory Faculty Of Science Tohoku University
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Ogawa Toshio
Geophysical Institute Kyoto University
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Ogawa Toshio
Solar-terrestrial Environment Laboratory Nagoya University
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