Preliminary report on the results of rocket experiments at Syowa Station in 1984
Results of the experiments with the sounding rockets at Syowa Station, Antarctica, are presented preliminarily. Three rockets penetrated into the bright active arc (~8kR for 4278Å) during the breakup phase, the quiet stable arc (~3kR) during the pre-breakup phase and the diffuse auroras (2~3kR) duri...
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National Institute of Polar Research
1985
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ftnipr:oai:nipr.repo.nii.ac.jp:00001813 2023-05-15T13:47:59+02:00 Preliminary report on the results of rocket experiments at Syowa Station in 1984 Takesi Nagata Takeo Hirasawa Masaki Ejiri Takayuki Ono 1985-12 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1813 http://id.nii.ac.jp/1291/00001813/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1813&item_no=1&attribute_id=18&file_no=1 en eng National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1813 http://id.nii.ac.jp/1291/00001813/ AA00733561 Memoirs of National Institute of Polar Research. Special issue, 38, 128-137(1985-12) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1813&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1985 ftnipr 2022-11-12T19:42:40Z Results of the experiments with the sounding rockets at Syowa Station, Antarctica, are presented preliminarily. Three rockets penetrated into the bright active arc (~8kR for 4278Å) during the breakup phase, the quiet stable arc (~3kR) during the pre-breakup phase and the diffuse auroras (2~3kR) during the post-breakup phase of auroral substorms. The peak of electron density amounts to 2×(10)^5 ele/(cm)^3 at 120km in altitude, 2×(10)^5 ele/(cm)^3 at 100km and 6×(10)^4 ele/(cm)^3 at 150km for bright active, the quiet stable and the diffuse auroras, respectively, while the diffuse aurora has the secondary peak of electron density with the amount of 2×(10)^4 ele/(cm)^3 at 100km in altitude. The vertical profiles of auroral λ4278Å emissions for the three auroras of different types show that the height of maximum λ4278Å emission is in agreement with the height (120km) of the peak layer of electron density in the breakup active auroras and in agreement with the height (95~100km) of the secondary peak layer of electron density in the post-breakup diffuse auroras. The energy spectra of precipitating electrons measured by three rockets suggest that the auroral arcs are excited mostly by the auroral electrons of 1~5keV in energy. Report Antarc* Antarctica Memoirs of National Institute of Polar Research Polar Research National Institute of Polar Research Repository, Japan Syowa Station |
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National Institute of Polar Research Repository, Japan |
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English |
description |
Results of the experiments with the sounding rockets at Syowa Station, Antarctica, are presented preliminarily. Three rockets penetrated into the bright active arc (~8kR for 4278Å) during the breakup phase, the quiet stable arc (~3kR) during the pre-breakup phase and the diffuse auroras (2~3kR) during the post-breakup phase of auroral substorms. The peak of electron density amounts to 2×(10)^5 ele/(cm)^3 at 120km in altitude, 2×(10)^5 ele/(cm)^3 at 100km and 6×(10)^4 ele/(cm)^3 at 150km for bright active, the quiet stable and the diffuse auroras, respectively, while the diffuse aurora has the secondary peak of electron density with the amount of 2×(10)^4 ele/(cm)^3 at 100km in altitude. The vertical profiles of auroral λ4278Å emissions for the three auroras of different types show that the height of maximum λ4278Å emission is in agreement with the height (120km) of the peak layer of electron density in the breakup active auroras and in agreement with the height (95~100km) of the secondary peak layer of electron density in the post-breakup diffuse auroras. The energy spectra of precipitating electrons measured by three rockets suggest that the auroral arcs are excited mostly by the auroral electrons of 1~5keV in energy. |
format |
Report |
author |
Takesi Nagata Takeo Hirasawa Masaki Ejiri Takayuki Ono |
spellingShingle |
Takesi Nagata Takeo Hirasawa Masaki Ejiri Takayuki Ono Preliminary report on the results of rocket experiments at Syowa Station in 1984 |
author_facet |
Takesi Nagata Takeo Hirasawa Masaki Ejiri Takayuki Ono |
author_sort |
Takesi Nagata |
title |
Preliminary report on the results of rocket experiments at Syowa Station in 1984 |
title_short |
Preliminary report on the results of rocket experiments at Syowa Station in 1984 |
title_full |
Preliminary report on the results of rocket experiments at Syowa Station in 1984 |
title_fullStr |
Preliminary report on the results of rocket experiments at Syowa Station in 1984 |
title_full_unstemmed |
Preliminary report on the results of rocket experiments at Syowa Station in 1984 |
title_sort |
preliminary report on the results of rocket experiments at syowa station in 1984 |
publisher |
National Institute of Polar Research |
publishDate |
1985 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1813 http://id.nii.ac.jp/1291/00001813/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1813&item_no=1&attribute_id=18&file_no=1 |
geographic |
Syowa Station |
geographic_facet |
Syowa Station |
genre |
Antarc* Antarctica Memoirs of National Institute of Polar Research Polar Research |
genre_facet |
Antarc* Antarctica Memoirs of National Institute of Polar Research Polar Research |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1813 http://id.nii.ac.jp/1291/00001813/ AA00733561 Memoirs of National Institute of Polar Research. Special issue, 38, 128-137(1985-12) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1813&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766248313845186560 |