Combined ESR and EISCAT observations of the dayside polar cap and auroral oval during the May 15, 1997 storm
The high-latitude ionospheric response to a major magnetic storm on May 15, 1997 is studied and different responses in the polar cap and the auroral oval are highlighted. Depletion of the F2 region electron density occurred in both the polar cap and the auroral zone, but due to different physical pr...
Published in: | Annales Geophysicae |
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00036669 2023-05-15T16:04:42+02:00 Combined ESR and EISCAT observations of the dayside polar cap and auroral oval during the May 15, 1997 storm Liu, H. Schlegel, K. Ma, S.-Y. 2000-09 electronic https://doi.org/10.1007/s00585-000-1067-x https://noa.gwlb.de/receive/cop_mods_00036669 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00036623/angeo-18-1067-2000.pdf https://angeo.copernicus.org/articles/18/1067/2000/angeo-18-1067-2000.pdf eng eng Springer Verlag 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/10.1007/s00585-000-1067-x https://noa.gwlb.de/receive/cop_mods_00036669 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00036623/angeo-18-1067-2000.pdf https://angeo.copernicus.org/articles/18/1067/2000/angeo-18-1067-2000.pdf https://open-access.net/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2000 ftnonlinearchiv https://doi.org/10.1007/s00585-000-1067-x 2022-02-08T22:43:53Z The high-latitude ionospheric response to a major magnetic storm on May 15, 1997 is studied and different responses in the polar cap and the auroral oval are highlighted. Depletion of the F2 region electron density occurred in both the polar cap and the auroral zone, but due to different physical processes. The increased recombination rate of O+ ions caused by a strong electric field played a crucial role in the auroral zone. The transport effect, however, especially the strong upward ion flow was also of great importance in the dayside polar cap. During the main phase and the beginning of the recovery phase soft particle precipitation in the polar cap showed a clear relation to the dynamic pressure of the solar wind, with a maximum cross-correlation coefficient of 0.63 at a time lag of 5 min. Key words: Ionosphere (auroral ionosphere; polar ionosphere) - Magnetospheric physics (storms and substorms) Article in Journal/Newspaper EISCAT Niedersächsisches Online-Archiv NOA Annales Geophysicae 18 9 1067 1072 |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Liu, H. Schlegel, K. Ma, S.-Y. Combined ESR and EISCAT observations of the dayside polar cap and auroral oval during the May 15, 1997 storm |
topic_facet |
article Verlagsveröffentlichung |
description |
The high-latitude ionospheric response to a major magnetic storm on May 15, 1997 is studied and different responses in the polar cap and the auroral oval are highlighted. Depletion of the F2 region electron density occurred in both the polar cap and the auroral zone, but due to different physical processes. The increased recombination rate of O+ ions caused by a strong electric field played a crucial role in the auroral zone. The transport effect, however, especially the strong upward ion flow was also of great importance in the dayside polar cap. During the main phase and the beginning of the recovery phase soft particle precipitation in the polar cap showed a clear relation to the dynamic pressure of the solar wind, with a maximum cross-correlation coefficient of 0.63 at a time lag of 5 min. Key words: Ionosphere (auroral ionosphere; polar ionosphere) - Magnetospheric physics (storms and substorms) |
format |
Article in Journal/Newspaper |
author |
Liu, H. Schlegel, K. Ma, S.-Y. |
author_facet |
Liu, H. Schlegel, K. Ma, S.-Y. |
author_sort |
Liu, H. |
title |
Combined ESR and EISCAT observations of the dayside polar cap and auroral oval during the May 15, 1997 storm |
title_short |
Combined ESR and EISCAT observations of the dayside polar cap and auroral oval during the May 15, 1997 storm |
title_full |
Combined ESR and EISCAT observations of the dayside polar cap and auroral oval during the May 15, 1997 storm |
title_fullStr |
Combined ESR and EISCAT observations of the dayside polar cap and auroral oval during the May 15, 1997 storm |
title_full_unstemmed |
Combined ESR and EISCAT observations of the dayside polar cap and auroral oval during the May 15, 1997 storm |
title_sort |
combined esr and eiscat observations of the dayside polar cap and auroral oval during the may 15, 1997 storm |
publisher |
Springer Verlag |
publishDate |
2000 |
url |
https://doi.org/10.1007/s00585-000-1067-x https://noa.gwlb.de/receive/cop_mods_00036669 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00036623/angeo-18-1067-2000.pdf https://angeo.copernicus.org/articles/18/1067/2000/angeo-18-1067-2000.pdf |
genre |
EISCAT |
genre_facet |
EISCAT |
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/10.1007/s00585-000-1067-x https://noa.gwlb.de/receive/cop_mods_00036669 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00036623/angeo-18-1067-2000.pdf https://angeo.copernicus.org/articles/18/1067/2000/angeo-18-1067-2000.pdf |
op_rights |
https://open-access.net/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s00585-000-1067-x |
container_title |
Annales Geophysicae |
container_volume |
18 |
container_issue |
9 |
container_start_page |
1067 |
op_container_end_page |
1072 |
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1766400312021614592 |