Auroral tomography analysis of a folded arc observed at the ALIS-Japan multi-station campaign on March 26, 1995
Auroral tomography is a state-of-the-art method to retrieve three dimensional (3D) structure of luminous aurora from images taken simultaneously at multiple observation points. Imaging is basically monochromatic and altitude structures as well as horizontal vortex structures at particular wavelength...
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National Institute of Polar Research/National Institute of Polar Research/Department of Electrical Engineering, Kyoto University/National Institute of Polar Research/Swedish Institute of Space Physics/Swedish Institute of Space Physics/Swedish Institute of Space Physics
1998
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ftnipr:oai:nipr.repo.nii.ac.jp:00004232 2023-05-15T12:59:42+02:00 Auroral tomography analysis of a folded arc observed at the ALIS-Japan multi-station campaign on March 26, 1995 Takehiko Aso Masaki Ejiri Akira Urashima Hiroshi Miyaoka Ake Steen Urban Brändström Björn Gustavsson 1998-01 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=4232 http://id.nii.ac.jp/1291/00004232/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=4232&item_no=1&attribute_id=18&file_no=1 en eng National Institute of Polar Research/National Institute of Polar Research/Department of Electrical Engineering, Kyoto University/National Institute of Polar Research/Swedish Institute of Space Physics/Swedish Institute of Space Physics/Swedish Institute of Space Physics National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=4232 http://id.nii.ac.jp/1291/00004232/ AA10756224 Proceedings of the NIPR Symposium on Upper Atmosphere Physics, 11, 1-10(1998-01) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=4232&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1998 ftnipr 2023-01-21T20:02:36Z Auroral tomography is a state-of-the-art method to retrieve three dimensional (3D) structure of luminous aurora from images taken simultaneously at multiple observation points. Imaging is basically monochromatic and altitude structures as well as horizontal vortex structures at particular wavelength are reconstructed. These are crucial for quantitative understanding of auroral formation and dynamical processes. In March 1995,the first multi-point international campaign between Sweden and Japan was carried out using three unmanned Swedish ALIS stations (Kiruna, Merasjarvi, Tjautjas) and two Japanese sites (Abisko, Nikkaluokta), separated by about 50km in Kiruna region. ALIS stands for the Auroral Large Imaging System which aims at capturing large-scale composite auroral images as well as optical tomographic imaging by a computer-controlled networking. In this paper, a description is given on the analysis of auroral tomography on the reconstruction of folded auroral arc observed at 2340 : 30 UT on March 26,1995. The images are taken for 1-5s integration at a green line of 557.7nm. Cameras were pointed to one of the preset common field of view, viz., a core region which is just overhead of Kiruna. Optical tomography relying on inversion analysis by the algebraic reconstruction technique has been carried out. The result indicates a fold structure of auroral arc with inferred altitude profile of photo-emission peaking at around 120km. Report Abisko Kiruna National Institute of Polar Research Repository, Japan Abisko ENVELOPE(18.829,18.829,68.349,68.349) Kiruna Nikkaluokta ENVELOPE(19.013,19.013,67.851,67.851) Tjautjas ENVELOPE(20.733,20.733,67.317,67.317) |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
description |
Auroral tomography is a state-of-the-art method to retrieve three dimensional (3D) structure of luminous aurora from images taken simultaneously at multiple observation points. Imaging is basically monochromatic and altitude structures as well as horizontal vortex structures at particular wavelength are reconstructed. These are crucial for quantitative understanding of auroral formation and dynamical processes. In March 1995,the first multi-point international campaign between Sweden and Japan was carried out using three unmanned Swedish ALIS stations (Kiruna, Merasjarvi, Tjautjas) and two Japanese sites (Abisko, Nikkaluokta), separated by about 50km in Kiruna region. ALIS stands for the Auroral Large Imaging System which aims at capturing large-scale composite auroral images as well as optical tomographic imaging by a computer-controlled networking. In this paper, a description is given on the analysis of auroral tomography on the reconstruction of folded auroral arc observed at 2340 : 30 UT on March 26,1995. The images are taken for 1-5s integration at a green line of 557.7nm. Cameras were pointed to one of the preset common field of view, viz., a core region which is just overhead of Kiruna. Optical tomography relying on inversion analysis by the algebraic reconstruction technique has been carried out. The result indicates a fold structure of auroral arc with inferred altitude profile of photo-emission peaking at around 120km. |
format |
Report |
author |
Takehiko Aso Masaki Ejiri Akira Urashima Hiroshi Miyaoka Ake Steen Urban Brändström Björn Gustavsson |
spellingShingle |
Takehiko Aso Masaki Ejiri Akira Urashima Hiroshi Miyaoka Ake Steen Urban Brändström Björn Gustavsson Auroral tomography analysis of a folded arc observed at the ALIS-Japan multi-station campaign on March 26, 1995 |
author_facet |
Takehiko Aso Masaki Ejiri Akira Urashima Hiroshi Miyaoka Ake Steen Urban Brändström Björn Gustavsson |
author_sort |
Takehiko Aso |
title |
Auroral tomography analysis of a folded arc observed at the ALIS-Japan multi-station campaign on March 26, 1995 |
title_short |
Auroral tomography analysis of a folded arc observed at the ALIS-Japan multi-station campaign on March 26, 1995 |
title_full |
Auroral tomography analysis of a folded arc observed at the ALIS-Japan multi-station campaign on March 26, 1995 |
title_fullStr |
Auroral tomography analysis of a folded arc observed at the ALIS-Japan multi-station campaign on March 26, 1995 |
title_full_unstemmed |
Auroral tomography analysis of a folded arc observed at the ALIS-Japan multi-station campaign on March 26, 1995 |
title_sort |
auroral tomography analysis of a folded arc observed at the alis-japan multi-station campaign on march 26, 1995 |
publisher |
National Institute of Polar Research/National Institute of Polar Research/Department of Electrical Engineering, Kyoto University/National Institute of Polar Research/Swedish Institute of Space Physics/Swedish Institute of Space Physics/Swedish Institute of Space Physics |
publishDate |
1998 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=4232 http://id.nii.ac.jp/1291/00004232/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=4232&item_no=1&attribute_id=18&file_no=1 |
long_lat |
ENVELOPE(18.829,18.829,68.349,68.349) ENVELOPE(19.013,19.013,67.851,67.851) ENVELOPE(20.733,20.733,67.317,67.317) |
geographic |
Abisko Kiruna Nikkaluokta Tjautjas |
geographic_facet |
Abisko Kiruna Nikkaluokta Tjautjas |
genre |
Abisko Kiruna |
genre_facet |
Abisko Kiruna |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=4232 http://id.nii.ac.jp/1291/00004232/ AA10756224 Proceedings of the NIPR Symposium on Upper Atmosphere Physics, 11, 1-10(1998-01) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=4232&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766082775263215616 |