Comparative analysis of electron density and electric field fluctuations in highly active auroras observed by a sounding rocket S-310JA-12: Preliminary results
The S-310JA-12 rocket was launched geomagnetically northward from Syowa Station, Antarctica, during a strong substorm period. The onboard instruments were a Faraday cup for measuring electron density and its fluctuations up to 8kHz together with total flux of electrons with energies above 105eV and...
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Hiraiso Solar Terrestrial Research Center, Radio Research Laboratory/Radio Research Laboratory/Radio Research Laboratory/Department of Physics, Faculty of Science, Kochi University/National Institute of Polar Research/Faculty of Science, Tohoku University
1988
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ftnipr:oai:nipr.repo.nii.ac.jp:00004030 2023-05-15T13:49:01+02:00 Comparative analysis of electron density and electric field fluctuations in highly active auroras observed by a sounding rocket S-310JA-12: Preliminary results Hirotaka Mori Eiichi Sagawa Tadahiko Ogawa Toshio Ogawa Hisao Yamagishi Hiroshi Fukunishi 1988-02 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=4030 http://id.nii.ac.jp/1291/00004030/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=4030&item_no=1&attribute_id=18&file_no=1 en eng Hiraiso Solar Terrestrial Research Center, Radio Research Laboratory/Radio Research Laboratory/Radio Research Laboratory/Department of Physics, Faculty of Science, Kochi University/National Institute of Polar Research/Faculty of Science, Tohoku University National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=4030 http://id.nii.ac.jp/1291/00004030/ AA10756224 Proceedings of the NIPR Symposium on Upper Atmosphere Physics, 1, 16-24(1988-02) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=4030&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1988 ftnipr 2023-01-14T19:56:31Z The S-310JA-12 rocket was launched geomagnetically northward from Syowa Station, Antarctica, during a strong substorm period. The onboard instruments were a Faraday cup for measuring electron density and its fluctuations up to 8kHz together with total flux of electrons with energies above 105eV and a pair of double probes for measuring DC electric field and electric field fluctuations of 5-220Hz, which detected various kinds of ELF-VLF band fluctuations during the flight. During the ascent, the Faraday cup observed strong VLF fluctuations in the E region and burst-like fluctuations over the region from 140 to 200km in altitude. The former might be caused by the two-stream instability and/or the cross-field instability, while the latter is considered to be generated artifitially around the rocket. Around the height of 220km, quasi-sinusoidal waves with the frequency of about 150Hz were observed by the both instruments. They are found to be right-hand circularly or elliptically polarized waves by crosscorrelation analysis. During the descent, the rocket passed through highly active auroras and the both instruments observed strong ELF fluctuations. It is suggested by the Faraday cup measurement that the rocket was considerably charged up by the precipitating electrons in the auroras. Report Antarc* Antarctica National Institute of Polar Research Repository, Japan Syowa Station Faraday ENVELOPE(-64.256,-64.256,-65.246,-65.246) |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
description |
The S-310JA-12 rocket was launched geomagnetically northward from Syowa Station, Antarctica, during a strong substorm period. The onboard instruments were a Faraday cup for measuring electron density and its fluctuations up to 8kHz together with total flux of electrons with energies above 105eV and a pair of double probes for measuring DC electric field and electric field fluctuations of 5-220Hz, which detected various kinds of ELF-VLF band fluctuations during the flight. During the ascent, the Faraday cup observed strong VLF fluctuations in the E region and burst-like fluctuations over the region from 140 to 200km in altitude. The former might be caused by the two-stream instability and/or the cross-field instability, while the latter is considered to be generated artifitially around the rocket. Around the height of 220km, quasi-sinusoidal waves with the frequency of about 150Hz were observed by the both instruments. They are found to be right-hand circularly or elliptically polarized waves by crosscorrelation analysis. During the descent, the rocket passed through highly active auroras and the both instruments observed strong ELF fluctuations. It is suggested by the Faraday cup measurement that the rocket was considerably charged up by the precipitating electrons in the auroras. |
format |
Report |
author |
Hirotaka Mori Eiichi Sagawa Tadahiko Ogawa Toshio Ogawa Hisao Yamagishi Hiroshi Fukunishi |
spellingShingle |
Hirotaka Mori Eiichi Sagawa Tadahiko Ogawa Toshio Ogawa Hisao Yamagishi Hiroshi Fukunishi Comparative analysis of electron density and electric field fluctuations in highly active auroras observed by a sounding rocket S-310JA-12: Preliminary results |
author_facet |
Hirotaka Mori Eiichi Sagawa Tadahiko Ogawa Toshio Ogawa Hisao Yamagishi Hiroshi Fukunishi |
author_sort |
Hirotaka Mori |
title |
Comparative analysis of electron density and electric field fluctuations in highly active auroras observed by a sounding rocket S-310JA-12: Preliminary results |
title_short |
Comparative analysis of electron density and electric field fluctuations in highly active auroras observed by a sounding rocket S-310JA-12: Preliminary results |
title_full |
Comparative analysis of electron density and electric field fluctuations in highly active auroras observed by a sounding rocket S-310JA-12: Preliminary results |
title_fullStr |
Comparative analysis of electron density and electric field fluctuations in highly active auroras observed by a sounding rocket S-310JA-12: Preliminary results |
title_full_unstemmed |
Comparative analysis of electron density and electric field fluctuations in highly active auroras observed by a sounding rocket S-310JA-12: Preliminary results |
title_sort |
comparative analysis of electron density and electric field fluctuations in highly active auroras observed by a sounding rocket s-310ja-12: preliminary results |
publisher |
Hiraiso Solar Terrestrial Research Center, Radio Research Laboratory/Radio Research Laboratory/Radio Research Laboratory/Department of Physics, Faculty of Science, Kochi University/National Institute of Polar Research/Faculty of Science, Tohoku University |
publishDate |
1988 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=4030 http://id.nii.ac.jp/1291/00004030/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=4030&item_no=1&attribute_id=18&file_no=1 |
long_lat |
ENVELOPE(-64.256,-64.256,-65.246,-65.246) |
geographic |
Syowa Station Faraday |
geographic_facet |
Syowa Station Faraday |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=4030 http://id.nii.ac.jp/1291/00004030/ AA10756224 Proceedings of the NIPR Symposium on Upper Atmosphere Physics, 1, 16-24(1988-02) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=4030&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766250458360315904 |