Auroral Morphological Changes to the Formation of Auroral Spiral during the Late Substorm Recovery Phase: Polar UVI and Ground All-Sky Camera Observations ...
The ultraviolet imager (UVI) of the Polar spacecraft and an all-sky camera at Longyearbyen contemporaneously detected an auroral vortex structure (so-called "auroral spiral") on 10 January 1997. From space, the auroral spiral was observed as a "small spot" (one of an azimuthally-...
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ftdatacite:10.48550/arxiv.2205.00244 2023-07-23T04:20:14+02:00 Auroral Morphological Changes to the Formation of Auroral Spiral during the Late Substorm Recovery Phase: Polar UVI and Ground All-Sky Camera Observations ... Nowada, Motoharu Miyashita, Yukinaga Partamies, Noora Degeling, Alexander William Shi, Quan-Qi 2022 https://dx.doi.org/10.48550/arxiv.2205.00244 https://arxiv.org/abs/2205.00244 unknown arXiv https://dx.doi.org/10.1029/2023ja031400 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 Space Physics physics.space-ph Plasma Physics physics.plasm-ph FOS Physical sciences Text article-journal ScholarlyArticle Article 2022 ftdatacite https://doi.org/10.48550/arxiv.2205.0024410.1029/2023ja031400 2023-07-03T18:42:13Z The ultraviolet imager (UVI) of the Polar spacecraft and an all-sky camera at Longyearbyen contemporaneously detected an auroral vortex structure (so-called "auroral spiral") on 10 January 1997. From space, the auroral spiral was observed as a "small spot" (one of an azimuthally-aligned chain of similar spots) in the poleward region of the main auroral oval from 18 h to 24 h magnetic local time. These auroral spots were formed while the substorm-associated auroral bulge was subsiding and several poleward-elongated auroral streak-like structures appeared during the late substorm recovery phase. During the spiral interval, the geomagnetically north-south and east-west components of the geomagnetic field, which were observed at several ground magnetic stations around Svalbard island, showed significant negative and positive bays caused by the field-aligned currents related with the aurora spiral appearance. The negative bays were reflected in the variations of local geomagnetic activity index (SML) which was ... : 40 Pages, 6 Figures (8 pages), 1 Table, and Supporting Information file (including 2 Figures (8 pages) and 1 Movie) ... Text Longyearbyen Svalbard DataCite Metadata Store (German National Library of Science and Technology) Longyearbyen Svalbard |
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DataCite Metadata Store (German National Library of Science and Technology) |
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Space Physics physics.space-ph Plasma Physics physics.plasm-ph FOS Physical sciences |
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Space Physics physics.space-ph Plasma Physics physics.plasm-ph FOS Physical sciences Nowada, Motoharu Miyashita, Yukinaga Partamies, Noora Degeling, Alexander William Shi, Quan-Qi Auroral Morphological Changes to the Formation of Auroral Spiral during the Late Substorm Recovery Phase: Polar UVI and Ground All-Sky Camera Observations ... |
topic_facet |
Space Physics physics.space-ph Plasma Physics physics.plasm-ph FOS Physical sciences |
description |
The ultraviolet imager (UVI) of the Polar spacecraft and an all-sky camera at Longyearbyen contemporaneously detected an auroral vortex structure (so-called "auroral spiral") on 10 January 1997. From space, the auroral spiral was observed as a "small spot" (one of an azimuthally-aligned chain of similar spots) in the poleward region of the main auroral oval from 18 h to 24 h magnetic local time. These auroral spots were formed while the substorm-associated auroral bulge was subsiding and several poleward-elongated auroral streak-like structures appeared during the late substorm recovery phase. During the spiral interval, the geomagnetically north-south and east-west components of the geomagnetic field, which were observed at several ground magnetic stations around Svalbard island, showed significant negative and positive bays caused by the field-aligned currents related with the aurora spiral appearance. The negative bays were reflected in the variations of local geomagnetic activity index (SML) which was ... : 40 Pages, 6 Figures (8 pages), 1 Table, and Supporting Information file (including 2 Figures (8 pages) and 1 Movie) ... |
format |
Text |
author |
Nowada, Motoharu Miyashita, Yukinaga Partamies, Noora Degeling, Alexander William Shi, Quan-Qi |
author_facet |
Nowada, Motoharu Miyashita, Yukinaga Partamies, Noora Degeling, Alexander William Shi, Quan-Qi |
author_sort |
Nowada, Motoharu |
title |
Auroral Morphological Changes to the Formation of Auroral Spiral during the Late Substorm Recovery Phase: Polar UVI and Ground All-Sky Camera Observations ... |
title_short |
Auroral Morphological Changes to the Formation of Auroral Spiral during the Late Substorm Recovery Phase: Polar UVI and Ground All-Sky Camera Observations ... |
title_full |
Auroral Morphological Changes to the Formation of Auroral Spiral during the Late Substorm Recovery Phase: Polar UVI and Ground All-Sky Camera Observations ... |
title_fullStr |
Auroral Morphological Changes to the Formation of Auroral Spiral during the Late Substorm Recovery Phase: Polar UVI and Ground All-Sky Camera Observations ... |
title_full_unstemmed |
Auroral Morphological Changes to the Formation of Auroral Spiral during the Late Substorm Recovery Phase: Polar UVI and Ground All-Sky Camera Observations ... |
title_sort |
auroral morphological changes to the formation of auroral spiral during the late substorm recovery phase: polar uvi and ground all-sky camera observations ... |
publisher |
arXiv |
publishDate |
2022 |
url |
https://dx.doi.org/10.48550/arxiv.2205.00244 https://arxiv.org/abs/2205.00244 |
geographic |
Longyearbyen Svalbard |
geographic_facet |
Longyearbyen Svalbard |
genre |
Longyearbyen Svalbard |
genre_facet |
Longyearbyen Svalbard |
op_relation |
https://dx.doi.org/10.1029/2023ja031400 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.48550/arxiv.2205.0024410.1029/2023ja031400 |
_version_ |
1772184075333795840 |