Pc3-4 ULF waves observed by the SuperDARN TIGER radar
Despite extensive research, the mechanisms for propagation of Pc3-4 energy from the generation region at the bow shock to the high-latitude ionosphere remain unresolved. We used high temporal (6-12s) and spatial (45km) resolution data from the SuperDARN TIGER radar (Tasmania) to examine Pc3-4 wave s...
Published in: | Annales Geophysicae |
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Copernicus Publications
2005
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00034102 2023-05-15T17:09:58+02:00 Pc3-4 ULF waves observed by the SuperDARN TIGER radar Ponomarenko, P. V. F. W. Menk, F. W. Waters, C. L. Sciffer, M. D. 2005-06 electronic https://doi.org/10.5194/angeo-23-1271-2005 https://noa.gwlb.de/receive/cop_mods_00034102 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00034056/angeo-23-1271-2005.pdf https://angeo.copernicus.org/articles/23/1271/2005/angeo-23-1271-2005.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-23-1271-2005 https://noa.gwlb.de/receive/cop_mods_00034102 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00034056/angeo-23-1271-2005.pdf https://angeo.copernicus.org/articles/23/1271/2005/angeo-23-1271-2005.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2005 ftnonlinearchiv https://doi.org/10.5194/angeo-23-1271-2005 2022-02-08T22:45:22Z Despite extensive research, the mechanisms for propagation of Pc3-4 energy from the generation region at the bow shock to the high-latitude ionosphere remain unresolved. We used high temporal (6-12s) and spatial (45km) resolution data from the SuperDARN TIGER radar (Tasmania) to examine Pc3-4 wave signatures at the F-region heights. We focus on a case study on 28 September 2000, when large-amplitude band-limited Pc3-4 oscillations were observed across 10-20 range gates in beam #4 (which points towards the CGM pole) for about four hours preceding MLT noon. These waves were detected in sea-scatter echoes reflected from the ionospheric footprint of the plasmatrough. Nearby ground magnetometer data from Macquarie Island showed very similar variations in both the north-south and east-west components. The radar data revealed the occasional presence of quasi-FLR (field-line resonance) spatial structures with frequencies much higher than those of the local fundamental FLR modes. Detailed spectral analysis of the ionospheric and ground data shows that these structures most probably correspond to a 3rd-harmonic, poloidal-mode FLR. Such observations suggest that compressional Pc3-4 waves produced in the upstream solar wind travel earthward from the magnetopause in the magnetic equatorial plane depositing energy into the Alfvenic modes, as either forced or 3rd-harmonic FLR that reach ionospheric heights along magnetic field lines. Article in Journal/Newspaper Macquarie Island Niedersächsisches Online-Archiv NOA Annales Geophysicae 23 4 1271 1280 |
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Niedersächsisches Online-Archiv NOA |
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English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Ponomarenko, P. V. F. W. Menk, F. W. Waters, C. L. Sciffer, M. D. Pc3-4 ULF waves observed by the SuperDARN TIGER radar |
topic_facet |
article Verlagsveröffentlichung |
description |
Despite extensive research, the mechanisms for propagation of Pc3-4 energy from the generation region at the bow shock to the high-latitude ionosphere remain unresolved. We used high temporal (6-12s) and spatial (45km) resolution data from the SuperDARN TIGER radar (Tasmania) to examine Pc3-4 wave signatures at the F-region heights. We focus on a case study on 28 September 2000, when large-amplitude band-limited Pc3-4 oscillations were observed across 10-20 range gates in beam #4 (which points towards the CGM pole) for about four hours preceding MLT noon. These waves were detected in sea-scatter echoes reflected from the ionospheric footprint of the plasmatrough. Nearby ground magnetometer data from Macquarie Island showed very similar variations in both the north-south and east-west components. The radar data revealed the occasional presence of quasi-FLR (field-line resonance) spatial structures with frequencies much higher than those of the local fundamental FLR modes. Detailed spectral analysis of the ionospheric and ground data shows that these structures most probably correspond to a 3rd-harmonic, poloidal-mode FLR. Such observations suggest that compressional Pc3-4 waves produced in the upstream solar wind travel earthward from the magnetopause in the magnetic equatorial plane depositing energy into the Alfvenic modes, as either forced or 3rd-harmonic FLR that reach ionospheric heights along magnetic field lines. |
format |
Article in Journal/Newspaper |
author |
Ponomarenko, P. V. F. W. Menk, F. W. Waters, C. L. Sciffer, M. D. |
author_facet |
Ponomarenko, P. V. F. W. Menk, F. W. Waters, C. L. Sciffer, M. D. |
author_sort |
Ponomarenko, P. V. |
title |
Pc3-4 ULF waves observed by the SuperDARN TIGER radar |
title_short |
Pc3-4 ULF waves observed by the SuperDARN TIGER radar |
title_full |
Pc3-4 ULF waves observed by the SuperDARN TIGER radar |
title_fullStr |
Pc3-4 ULF waves observed by the SuperDARN TIGER radar |
title_full_unstemmed |
Pc3-4 ULF waves observed by the SuperDARN TIGER radar |
title_sort |
pc3-4 ulf waves observed by the superdarn tiger radar |
publisher |
Copernicus Publications |
publishDate |
2005 |
url |
https://doi.org/10.5194/angeo-23-1271-2005 https://noa.gwlb.de/receive/cop_mods_00034102 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00034056/angeo-23-1271-2005.pdf https://angeo.copernicus.org/articles/23/1271/2005/angeo-23-1271-2005.pdf |
genre |
Macquarie Island |
genre_facet |
Macquarie Island |
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-23-1271-2005 https://noa.gwlb.de/receive/cop_mods_00034102 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00034056/angeo-23-1271-2005.pdf https://angeo.copernicus.org/articles/23/1271/2005/angeo-23-1271-2005.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/angeo-23-1271-2005 |
container_title |
Annales Geophysicae |
container_volume |
23 |
container_issue |
4 |
container_start_page |
1271 |
op_container_end_page |
1280 |
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1766066349839220736 |