Spatial scaling of optical fluctuations during substorm-time aurora
A study of statistical features of auroras during substorm activity is presented, emphasizing characteristics which are commonly applied to turbulent flows. Data from all-sky television (TV) observations from the Barentsburg observatory (Svalbard) have been used. Features of the probability density...
Published in: | Annales Geophysicae |
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00032475 2023-05-15T15:39:16+02:00 Spatial scaling of optical fluctuations during substorm-time aurora Kozelov, B. V. Rypdal, K. 2007-05 electronic https://doi.org/10.5194/angeo-25-915-2007 https://noa.gwlb.de/receive/cop_mods_00032475 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00032429/angeo-25-915-2007.pdf https://angeo.copernicus.org/articles/25/915/2007/angeo-25-915-2007.pdf eng eng Copernicus Publications Annales Geophysicae -- http://www.bibliothek.uni-regensburg.de/ezeit/?1458425 -- https://www.ann-geophys.net/ -- https://www.ann-geophys.net/volumes.html -- http://link.springer.com/journal/585 -- 1432-0576 https://doi.org/10.5194/angeo-25-915-2007 https://noa.gwlb.de/receive/cop_mods_00032475 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00032429/angeo-25-915-2007.pdf https://angeo.copernicus.org/articles/25/915/2007/angeo-25-915-2007.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2007 ftnonlinearchiv https://doi.org/10.5194/angeo-25-915-2007 2022-02-08T22:46:14Z A study of statistical features of auroras during substorm activity is presented, emphasizing characteristics which are commonly applied to turbulent flows. Data from all-sky television (TV) observations from the Barentsburg observatory (Svalbard) have been used. Features of the probability density function (PDF) of auroral fluctuations have been examined at different spatial scales. We find that the observed PDFs generally have a non-Gaussian, heavy-tailed shape. The generalized structure function (GSF) for the auroral luminosity fluctuations has been analyzed to determine the scaling properties of the higher (up to 6) order moments, and the evolution of the scaling indices during the actual substorm event has been determined. The scaling features obtained can be interpreted as signatures of turbulent motion of the magnetosphere-ionosphere plasma. Relations to previously obtained results of avalanche analysis of the same event, as well as possible implications for the validity of self-organized criticality models and turbulence models of the substorm activity, are discussed. Article in Journal/Newspaper Barentsburg Svalbard Niedersächsisches Online-Archiv NOA Svalbard Barentsburg ENVELOPE(14.212,14.212,78.064,78.064) Annales Geophysicae 25 4 915 927 |
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ftnonlinearchiv |
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English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Kozelov, B. V. Rypdal, K. Spatial scaling of optical fluctuations during substorm-time aurora |
topic_facet |
article Verlagsveröffentlichung |
description |
A study of statistical features of auroras during substorm activity is presented, emphasizing characteristics which are commonly applied to turbulent flows. Data from all-sky television (TV) observations from the Barentsburg observatory (Svalbard) have been used. Features of the probability density function (PDF) of auroral fluctuations have been examined at different spatial scales. We find that the observed PDFs generally have a non-Gaussian, heavy-tailed shape. The generalized structure function (GSF) for the auroral luminosity fluctuations has been analyzed to determine the scaling properties of the higher (up to 6) order moments, and the evolution of the scaling indices during the actual substorm event has been determined. The scaling features obtained can be interpreted as signatures of turbulent motion of the magnetosphere-ionosphere plasma. Relations to previously obtained results of avalanche analysis of the same event, as well as possible implications for the validity of self-organized criticality models and turbulence models of the substorm activity, are discussed. |
format |
Article in Journal/Newspaper |
author |
Kozelov, B. V. Rypdal, K. |
author_facet |
Kozelov, B. V. Rypdal, K. |
author_sort |
Kozelov, B. V. |
title |
Spatial scaling of optical fluctuations during substorm-time aurora |
title_short |
Spatial scaling of optical fluctuations during substorm-time aurora |
title_full |
Spatial scaling of optical fluctuations during substorm-time aurora |
title_fullStr |
Spatial scaling of optical fluctuations during substorm-time aurora |
title_full_unstemmed |
Spatial scaling of optical fluctuations during substorm-time aurora |
title_sort |
spatial scaling of optical fluctuations during substorm-time aurora |
publisher |
Copernicus Publications |
publishDate |
2007 |
url |
https://doi.org/10.5194/angeo-25-915-2007 https://noa.gwlb.de/receive/cop_mods_00032475 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00032429/angeo-25-915-2007.pdf https://angeo.copernicus.org/articles/25/915/2007/angeo-25-915-2007.pdf |
long_lat |
ENVELOPE(14.212,14.212,78.064,78.064) |
geographic |
Svalbard Barentsburg |
geographic_facet |
Svalbard Barentsburg |
genre |
Barentsburg Svalbard |
genre_facet |
Barentsburg Svalbard |
op_relation |
Annales Geophysicae -- http://www.bibliothek.uni-regensburg.de/ezeit/?1458425 -- https://www.ann-geophys.net/ -- https://www.ann-geophys.net/volumes.html -- http://link.springer.com/journal/585 -- 1432-0576 https://doi.org/10.5194/angeo-25-915-2007 https://noa.gwlb.de/receive/cop_mods_00032475 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00032429/angeo-25-915-2007.pdf https://angeo.copernicus.org/articles/25/915/2007/angeo-25-915-2007.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/angeo-25-915-2007 |
container_title |
Annales Geophysicae |
container_volume |
25 |
container_issue |
4 |
container_start_page |
915 |
op_container_end_page |
927 |
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