Morphology and dynamics of aurora at fine scale: first results from the ASK instrument
The ASK instrument (Auroral Structure and Kinetics) is a narrow field auroral imager, providing simultaneous images of aurora in three different spectral bands at multiple frames per second resolution. The three emission species studied are O2+ (5620 Å), O+ (7319 Å) and O (7774 Å). ASK was installed...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00031425 2023-05-15T18:29:47+02:00 Morphology and dynamics of aurora at fine scale: first results from the ASK instrument Dahlgren, H. Ivchenko, N. Sullivan, J. Lanchester, B. S. Marklund, G. Whiter, D. 2008-05 electronic https://doi.org/10.5194/angeo-26-1041-2008 https://noa.gwlb.de/receive/cop_mods_00031425 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031379/angeo-26-1041-2008.pdf https://angeo.copernicus.org/articles/26/1041/2008/angeo-26-1041-2008.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-26-1041-2008 https://noa.gwlb.de/receive/cop_mods_00031425 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031379/angeo-26-1041-2008.pdf https://angeo.copernicus.org/articles/26/1041/2008/angeo-26-1041-2008.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2008 ftnonlinearchiv https://doi.org/10.5194/angeo-26-1041-2008 2022-02-08T22:46:43Z The ASK instrument (Auroral Structure and Kinetics) is a narrow field auroral imager, providing simultaneous images of aurora in three different spectral bands at multiple frames per second resolution. The three emission species studied are O2+ (5620 Å), O+ (7319 Å) and O (7774 Å). ASK was installed and operated for the first time in an observational campaign on Svalbard, from December 2005 to March 2006. The measurements were supported by data from the Spectrographic Imaging Facility (SIF). The relation between the morphology and dynamics of the visible aurora and its spectral characteristics is studied for selected events from this period. In these events it is found that dynamic aurora is coupled to high energy electron precipitation. By studying the O2+/O intensity ratio we find that some auroral filaments are caused by higher energy precipitation within regions of lower energy precipitation, whereas other filaments are the result of a higher particle flux compared to the surroundings. Article in Journal/Newspaper Svalbard Niedersächsisches Online-Archiv NOA Svalbard Annales Geophysicae 26 5 1041 1048 |
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article Verlagsveröffentlichung Dahlgren, H. Ivchenko, N. Sullivan, J. Lanchester, B. S. Marklund, G. Whiter, D. Morphology and dynamics of aurora at fine scale: first results from the ASK instrument |
topic_facet |
article Verlagsveröffentlichung |
description |
The ASK instrument (Auroral Structure and Kinetics) is a narrow field auroral imager, providing simultaneous images of aurora in three different spectral bands at multiple frames per second resolution. The three emission species studied are O2+ (5620 Å), O+ (7319 Å) and O (7774 Å). ASK was installed and operated for the first time in an observational campaign on Svalbard, from December 2005 to March 2006. The measurements were supported by data from the Spectrographic Imaging Facility (SIF). The relation between the morphology and dynamics of the visible aurora and its spectral characteristics is studied for selected events from this period. In these events it is found that dynamic aurora is coupled to high energy electron precipitation. By studying the O2+/O intensity ratio we find that some auroral filaments are caused by higher energy precipitation within regions of lower energy precipitation, whereas other filaments are the result of a higher particle flux compared to the surroundings. |
format |
Article in Journal/Newspaper |
author |
Dahlgren, H. Ivchenko, N. Sullivan, J. Lanchester, B. S. Marklund, G. Whiter, D. |
author_facet |
Dahlgren, H. Ivchenko, N. Sullivan, J. Lanchester, B. S. Marklund, G. Whiter, D. |
author_sort |
Dahlgren, H. |
title |
Morphology and dynamics of aurora at fine scale: first results from the ASK instrument |
title_short |
Morphology and dynamics of aurora at fine scale: first results from the ASK instrument |
title_full |
Morphology and dynamics of aurora at fine scale: first results from the ASK instrument |
title_fullStr |
Morphology and dynamics of aurora at fine scale: first results from the ASK instrument |
title_full_unstemmed |
Morphology and dynamics of aurora at fine scale: first results from the ASK instrument |
title_sort |
morphology and dynamics of aurora at fine scale: first results from the ask instrument |
publisher |
Copernicus Publications |
publishDate |
2008 |
url |
https://doi.org/10.5194/angeo-26-1041-2008 https://noa.gwlb.de/receive/cop_mods_00031425 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031379/angeo-26-1041-2008.pdf https://angeo.copernicus.org/articles/26/1041/2008/angeo-26-1041-2008.pdf |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
Svalbard |
genre_facet |
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-26-1041-2008 https://noa.gwlb.de/receive/cop_mods_00031425 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031379/angeo-26-1041-2008.pdf https://angeo.copernicus.org/articles/26/1041/2008/angeo-26-1041-2008.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/angeo-26-1041-2008 |
container_title |
Annales Geophysicae |
container_volume |
26 |
container_issue |
5 |
container_start_page |
1041 |
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1048 |
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