Coordinated ground-based, low altitude satellite and Cluster observations on global and local scales during a transient post-noon sector excursion of the magnetospheric cusp
On 14 January 2001, the four Cluster spacecraft passed through the northern magnetospheric mantle in close conjunction to the EISCAT Svalbard Radar (ESR) and approached the post-noon dayside magnetopause over Green-land between 13:00 and 14:00 UT. During that interval, a sudden reorganisation of the...
Published in: | Annales Geophysicae |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Copernicus Publications
2001
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Online Access: | https://doi.org/10.5194/angeo-19-1367-2001 https://noa.gwlb.de/receive/cop_mods_00036302 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00036256/angeo-19-1367-2001.pdf https://angeo.copernicus.org/articles/19/1367/2001/angeo-19-1367-2001.pdf |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
op_collection_id |
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language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Opgenoorth, H. J. Lockwood, M. Alcaydé, D. Donovan, E. Engebretson, M. J. van Eyken, A. P. Kauristie, K. Lester, M. Moen, J. Waterman, J. Alleyne, H. André, M. Dunlop, M. W. Cornilleau-Wehrlin, N. Masson, A. Fazerkerley, A. Rème, H. André, R. Amm, O. Balogh, A. Behlke, R. Blelly, P. L. Boholm, H. Borälv, E. Bosqued, J. M. Buchert, S. Candidi, M. Cerisier, J. C. Cully, C. Denig, W. F. Eglitis, P. Greenwald, R. A. Jackal, B. Kelly, J. D. Krauklis, I. Lu, G. Mann, I. R. Marcucci, M. F. McCrea, I. W. Maksimovic, M. Massetti, S. Décréau, P. M. E. Milling, D. K. Orsini, S. Pitout, F. Provan, G. Ruohoniemi, J. M. Samson, J. C. Schott, J. J. Sedgemore-Schulthess, F. Stamper, R. Stauning, P. Strømme, A. Taylor, M. Vaivads, A. Villain, J. P. Voronkov, I. Wild, J. A. Wild, M. Coordinated ground-based, low altitude satellite and Cluster observations on global and local scales during a transient post-noon sector excursion of the magnetospheric cusp |
topic_facet |
article Verlagsveröffentlichung |
description |
On 14 January 2001, the four Cluster spacecraft passed through the northern magnetospheric mantle in close conjunction to the EISCAT Svalbard Radar (ESR) and approached the post-noon dayside magnetopause over Green-land between 13:00 and 14:00 UT. During that interval, a sudden reorganisation of the high-latitude dayside convection pattern occurred after 13:20 UT, most likely caused by a direction change of the Solar wind magnetic field. The result was an eastward and poleward directed flow-channel, as monitored by the SuperDARN radar network and also by arrays of ground-based magnetometers in Canada, Greenland and Scandinavia. After an initial eastward and later poleward expansion of the flow-channel between 13:20 and 13:40 UT, the four Cluster spacecraft, and the field line footprints covered by the eastward looking scan cycle of the Söndre Strömfjord incoherent scatter radar were engulfed by cusp-like precipitation with transient magnetic and electric field signatures. In addition, the EISCAT Svalbard Radar detected strong transient effects of the convection reorganisation, a poleward moving precipitation, and a fast ion flow-channel in association with the auroral structures that suddenly formed to the west and north of the radar. From a detailed analysis of the coordinated Cluster and ground-based data, it was found that this extraordinary transient convection pattern, indeed, had moved the cusp precipitation from its former pre-noon position into the late post-noon sector, allowing for the first and quite unexpected encounter of the cusp by the Cluster spacecraft. Our findings illustrate the large amplitude of cusp dynamics even in response to moderate solar wind forcing. The global ground-based data proves to be an invaluable tool to monitor the dynamics and width of the affected magnetospheric regions. Key words. Magnetospheric cusp, ionosphere, reconnection, convection flow-channel, Cluster, ground-based observations |
format |
Article in Journal/Newspaper |
author |
Opgenoorth, H. J. Lockwood, M. Alcaydé, D. Donovan, E. Engebretson, M. J. van Eyken, A. P. Kauristie, K. Lester, M. Moen, J. Waterman, J. Alleyne, H. André, M. Dunlop, M. W. Cornilleau-Wehrlin, N. Masson, A. Fazerkerley, A. Rème, H. André, R. Amm, O. Balogh, A. Behlke, R. Blelly, P. L. Boholm, H. Borälv, E. Bosqued, J. M. Buchert, S. Candidi, M. Cerisier, J. C. Cully, C. Denig, W. F. Eglitis, P. Greenwald, R. A. Jackal, B. Kelly, J. D. Krauklis, I. Lu, G. Mann, I. R. Marcucci, M. F. McCrea, I. W. Maksimovic, M. Massetti, S. Décréau, P. M. E. Milling, D. K. Orsini, S. Pitout, F. Provan, G. Ruohoniemi, J. M. Samson, J. C. Schott, J. J. Sedgemore-Schulthess, F. Stamper, R. Stauning, P. Strømme, A. Taylor, M. Vaivads, A. Villain, J. P. Voronkov, I. Wild, J. A. Wild, M. |
author_facet |
Opgenoorth, H. J. Lockwood, M. Alcaydé, D. Donovan, E. Engebretson, M. J. van Eyken, A. P. Kauristie, K. Lester, M. Moen, J. Waterman, J. Alleyne, H. André, M. Dunlop, M. W. Cornilleau-Wehrlin, N. Masson, A. Fazerkerley, A. Rème, H. André, R. Amm, O. Balogh, A. Behlke, R. Blelly, P. L. Boholm, H. Borälv, E. Bosqued, J. M. Buchert, S. Candidi, M. Cerisier, J. C. Cully, C. Denig, W. F. Eglitis, P. Greenwald, R. A. Jackal, B. Kelly, J. D. Krauklis, I. Lu, G. Mann, I. R. Marcucci, M. F. McCrea, I. W. Maksimovic, M. Massetti, S. Décréau, P. M. E. Milling, D. K. Orsini, S. Pitout, F. Provan, G. Ruohoniemi, J. M. Samson, J. C. Schott, J. J. Sedgemore-Schulthess, F. Stamper, R. Stauning, P. Strømme, A. Taylor, M. Vaivads, A. Villain, J. P. Voronkov, I. Wild, J. A. Wild, M. |
author_sort |
Opgenoorth, H. J. |
title |
Coordinated ground-based, low altitude satellite and Cluster observations on global and local scales during a transient post-noon sector excursion of the magnetospheric cusp |
title_short |
Coordinated ground-based, low altitude satellite and Cluster observations on global and local scales during a transient post-noon sector excursion of the magnetospheric cusp |
title_full |
Coordinated ground-based, low altitude satellite and Cluster observations on global and local scales during a transient post-noon sector excursion of the magnetospheric cusp |
title_fullStr |
Coordinated ground-based, low altitude satellite and Cluster observations on global and local scales during a transient post-noon sector excursion of the magnetospheric cusp |
title_full_unstemmed |
Coordinated ground-based, low altitude satellite and Cluster observations on global and local scales during a transient post-noon sector excursion of the magnetospheric cusp |
title_sort |
coordinated ground-based, low altitude satellite and cluster observations on global and local scales during a transient post-noon sector excursion of the magnetospheric cusp |
publisher |
Copernicus Publications |
publishDate |
2001 |
url |
https://doi.org/10.5194/angeo-19-1367-2001 https://noa.gwlb.de/receive/cop_mods_00036302 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00036256/angeo-19-1367-2001.pdf https://angeo.copernicus.org/articles/19/1367/2001/angeo-19-1367-2001.pdf |
geographic |
Canada Greenland Svalbard |
geographic_facet |
Canada Greenland Svalbard |
genre |
EISCAT Greenland Svalbard |
genre_facet |
EISCAT Greenland 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-19-1367-2001 https://noa.gwlb.de/receive/cop_mods_00036302 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00036256/angeo-19-1367-2001.pdf https://angeo.copernicus.org/articles/19/1367/2001/angeo-19-1367-2001.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/angeo-19-1367-2001 |
container_title |
Annales Geophysicae |
container_volume |
19 |
container_issue |
10/12 |
container_start_page |
1367 |
op_container_end_page |
1398 |
_version_ |
1766400260826988544 |
spelling |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00036302 2023-05-15T16:04:39+02:00 Coordinated ground-based, low altitude satellite and Cluster observations on global and local scales during a transient post-noon sector excursion of the magnetospheric cusp Opgenoorth, H. J. Lockwood, M. Alcaydé, D. Donovan, E. Engebretson, M. J. van Eyken, A. P. Kauristie, K. Lester, M. Moen, J. Waterman, J. Alleyne, H. André, M. Dunlop, M. W. Cornilleau-Wehrlin, N. Masson, A. Fazerkerley, A. Rème, H. André, R. Amm, O. Balogh, A. Behlke, R. Blelly, P. L. Boholm, H. Borälv, E. Bosqued, J. M. Buchert, S. Candidi, M. Cerisier, J. C. Cully, C. Denig, W. F. Eglitis, P. Greenwald, R. A. Jackal, B. Kelly, J. D. Krauklis, I. Lu, G. Mann, I. R. Marcucci, M. F. McCrea, I. W. Maksimovic, M. Massetti, S. Décréau, P. M. E. Milling, D. K. Orsini, S. Pitout, F. Provan, G. Ruohoniemi, J. M. Samson, J. C. Schott, J. J. Sedgemore-Schulthess, F. Stamper, R. Stauning, P. Strømme, A. Taylor, M. Vaivads, A. Villain, J. P. Voronkov, I. Wild, J. A. Wild, M. 2001-09 electronic https://doi.org/10.5194/angeo-19-1367-2001 https://noa.gwlb.de/receive/cop_mods_00036302 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00036256/angeo-19-1367-2001.pdf https://angeo.copernicus.org/articles/19/1367/2001/angeo-19-1367-2001.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-19-1367-2001 https://noa.gwlb.de/receive/cop_mods_00036302 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00036256/angeo-19-1367-2001.pdf https://angeo.copernicus.org/articles/19/1367/2001/angeo-19-1367-2001.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2001 ftnonlinearchiv https://doi.org/10.5194/angeo-19-1367-2001 2022-02-08T22:44:04Z On 14 January 2001, the four Cluster spacecraft passed through the northern magnetospheric mantle in close conjunction to the EISCAT Svalbard Radar (ESR) and approached the post-noon dayside magnetopause over Green-land between 13:00 and 14:00 UT. During that interval, a sudden reorganisation of the high-latitude dayside convection pattern occurred after 13:20 UT, most likely caused by a direction change of the Solar wind magnetic field. The result was an eastward and poleward directed flow-channel, as monitored by the SuperDARN radar network and also by arrays of ground-based magnetometers in Canada, Greenland and Scandinavia. After an initial eastward and later poleward expansion of the flow-channel between 13:20 and 13:40 UT, the four Cluster spacecraft, and the field line footprints covered by the eastward looking scan cycle of the Söndre Strömfjord incoherent scatter radar were engulfed by cusp-like precipitation with transient magnetic and electric field signatures. In addition, the EISCAT Svalbard Radar detected strong transient effects of the convection reorganisation, a poleward moving precipitation, and a fast ion flow-channel in association with the auroral structures that suddenly formed to the west and north of the radar. From a detailed analysis of the coordinated Cluster and ground-based data, it was found that this extraordinary transient convection pattern, indeed, had moved the cusp precipitation from its former pre-noon position into the late post-noon sector, allowing for the first and quite unexpected encounter of the cusp by the Cluster spacecraft. Our findings illustrate the large amplitude of cusp dynamics even in response to moderate solar wind forcing. The global ground-based data proves to be an invaluable tool to monitor the dynamics and width of the affected magnetospheric regions. Key words. Magnetospheric cusp, ionosphere, reconnection, convection flow-channel, Cluster, ground-based observations Article in Journal/Newspaper EISCAT Greenland Svalbard Niedersächsisches Online-Archiv NOA Canada Greenland Svalbard Annales Geophysicae 19 10/12 1367 1398 |