Auroral dynamics in the polar cap region
The characteristics of extremely high latitude auroras are examined by using Greenland auroral data. In this paper, two different auroras obtained in the dayside and the morning sector are mainly analyzed; (1) polar arc : this aurora is observed during quiet conditions and is related to less than 10...
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Takushoku University/National Institute of Polar Research/National Institute of Polar Research/National Institute of Polar Research/Tohoku University
1995
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ftnipr:oai:nipr.repo.nii.ac.jp:00004168 2023-05-15T16:28:37+02:00 Auroral dynamics in the polar cap region Kazuo Makita Masaru Ayukawa Hisao Yamagishi Masaki Ejiri Takeshi Sakanoi 1995-05 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=4168 http://id.nii.ac.jp/1291/00004168/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=4168&item_no=1&attribute_id=18&file_no=1 ja jpn Takushoku University/National Institute of Polar Research/National Institute of Polar Research/National Institute of Polar Research/Tohoku University National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=4168 http://id.nii.ac.jp/1291/00004168/ AA10756224 Proceedings of the NIPR Symposium on Upper Atmosphere Physics, 8, 7-16(1995-05) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=4168&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1995 ftnipr 2023-01-21T20:02:36Z The characteristics of extremely high latitude auroras are examined by using Greenland auroral data. In this paper, two different auroras obtained in the dayside and the morning sector are mainly analyzed; (1) polar arc : this aurora is observed during quiet conditions and is related to less than 100eV precipitating electrons, and (2) polar corona : this aurora is observed during disturbed conditions and is related to a few hundred eV electrons. These two auroras may have different sources; the polar arc corresponds to the plasma mantle or low latitude boundary layer and the polar corona corresponds to the low latitude boundary layer or boundary plasma sheet. The relationships of IMF fluctuations are also examined and found that auroral enhancement and/or movement are seen in association with southward turning of the IMF. Report Greenland National Institute of Polar Research Repository, Japan Greenland |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
Japanese |
description |
The characteristics of extremely high latitude auroras are examined by using Greenland auroral data. In this paper, two different auroras obtained in the dayside and the morning sector are mainly analyzed; (1) polar arc : this aurora is observed during quiet conditions and is related to less than 100eV precipitating electrons, and (2) polar corona : this aurora is observed during disturbed conditions and is related to a few hundred eV electrons. These two auroras may have different sources; the polar arc corresponds to the plasma mantle or low latitude boundary layer and the polar corona corresponds to the low latitude boundary layer or boundary plasma sheet. The relationships of IMF fluctuations are also examined and found that auroral enhancement and/or movement are seen in association with southward turning of the IMF. |
format |
Report |
author |
Kazuo Makita Masaru Ayukawa Hisao Yamagishi Masaki Ejiri Takeshi Sakanoi |
spellingShingle |
Kazuo Makita Masaru Ayukawa Hisao Yamagishi Masaki Ejiri Takeshi Sakanoi Auroral dynamics in the polar cap region |
author_facet |
Kazuo Makita Masaru Ayukawa Hisao Yamagishi Masaki Ejiri Takeshi Sakanoi |
author_sort |
Kazuo Makita |
title |
Auroral dynamics in the polar cap region |
title_short |
Auroral dynamics in the polar cap region |
title_full |
Auroral dynamics in the polar cap region |
title_fullStr |
Auroral dynamics in the polar cap region |
title_full_unstemmed |
Auroral dynamics in the polar cap region |
title_sort |
auroral dynamics in the polar cap region |
publisher |
Takushoku University/National Institute of Polar Research/National Institute of Polar Research/National Institute of Polar Research/Tohoku University |
publishDate |
1995 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=4168 http://id.nii.ac.jp/1291/00004168/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=4168&item_no=1&attribute_id=18&file_no=1 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=4168 http://id.nii.ac.jp/1291/00004168/ AA10756224 Proceedings of the NIPR Symposium on Upper Atmosphere Physics, 8, 7-16(1995-05) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=4168&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766018284507889664 |