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 Greenland between 13:00 and 14:00 UT During that interval, a sudden reorganisation of the h...
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Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2001
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Online Access: | https://orbit.dtu.dk/en/publications/50ba3722-1445-4ba7-998f-e56fba821deb |
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ftdtupubl:oai:pure.atira.dk:publications/50ba3722-1445-4ba7-998f-e56fba821deb |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
ionosphere reconnection ground-based observations magnetospheric cusp convection flow-channel Cluster |
spellingShingle |
ionosphere reconnection ground-based observations magnetospheric cusp convection flow-channel Cluster Opgenoorth, H.J. Lockwood, M. Alcayde, D. Donovan, E. Engebretson, M.J. van Eyken, A.P. Kauristie, K. Lester, M. Moen, J. Waterman, J. Alleyne, H. Andre, M. Dunlop, M.W. Cornilleau-Wehrlin, N. Masson, A. Fazerkerley, A. Reme, H. Andre, R. Amm, O. Balogh, A. Behlke, R. Blelly, P.L. Boholm, H. Boralv, 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. Decreau, 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. Stromme, 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 |
ionosphere reconnection ground-based observations magnetospheric cusp convection flow-channel Cluster |
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 Greenland between 13:00 and 14:00 UT During that interval, a sudden reorganisation of the high-latitude dayside convection pattern accurred 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 Sondre Stromfjord 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. |
format |
Article in Journal/Newspaper |
author |
Opgenoorth, H.J. Lockwood, M. Alcayde, D. Donovan, E. Engebretson, M.J. van Eyken, A.P. Kauristie, K. Lester, M. Moen, J. Waterman, J. Alleyne, H. Andre, M. Dunlop, M.W. Cornilleau-Wehrlin, N. Masson, A. Fazerkerley, A. Reme, H. Andre, R. Amm, O. Balogh, A. Behlke, R. Blelly, P.L. Boholm, H. Boralv, 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. Decreau, 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. Stromme, A. Taylor, M. Vaivads, A. Villain, J.P. Voronkov, I. Wild, J.A. Wild, M. |
author_facet |
Opgenoorth, H.J. Lockwood, M. Alcayde, D. Donovan, E. Engebretson, M.J. van Eyken, A.P. Kauristie, K. Lester, M. Moen, J. Waterman, J. Alleyne, H. Andre, M. Dunlop, M.W. Cornilleau-Wehrlin, N. Masson, A. Fazerkerley, A. Reme, H. Andre, R. Amm, O. Balogh, A. Behlke, R. Blelly, P.L. Boholm, H. Boralv, 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. Decreau, 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. Stromme, 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 |
publishDate |
2001 |
url |
https://orbit.dtu.dk/en/publications/50ba3722-1445-4ba7-998f-e56fba821deb |
geographic |
Svalbard Canada Greenland |
geographic_facet |
Svalbard Canada Greenland |
genre |
EISCAT Greenland Sondre Stromfjord Svalbard |
genre_facet |
EISCAT Greenland Sondre Stromfjord Svalbard |
op_source |
Opgenoorth , H J , Lockwood , M , Alcayde , D , Donovan , E , Engebretson , M J , van Eyken , A P , Kauristie , K , Lester , M , Moen , J , Waterman , J , Alleyne , H , Andre , M , Dunlop , M W , Cornilleau-Wehrlin , N , Masson , A , Fazerkerley , A , Reme , H , Andre , R , Amm , O , Balogh , A , Behlke , R , Blelly , P L , Boholm , H , Boralv , 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 , Decreau , 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 , Stromme , A , Taylor , M , Vaivads , A , Villain , J P , Voronkov , I , Wild , J A & Wild , M 2001 , ' 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 ' , Annales Geophysicae , vol. 19 , no. 10-12 , pp. 1367-1398 . |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1784892233319710720 |
spelling |
ftdtupubl:oai:pure.atira.dk:publications/50ba3722-1445-4ba7-998f-e56fba821deb 2023-12-10T09:48:17+01:00 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. Alcayde, D. Donovan, E. Engebretson, M.J. van Eyken, A.P. Kauristie, K. Lester, M. Moen, J. Waterman, J. Alleyne, H. Andre, M. Dunlop, M.W. Cornilleau-Wehrlin, N. Masson, A. Fazerkerley, A. Reme, H. Andre, R. Amm, O. Balogh, A. Behlke, R. Blelly, P.L. Boholm, H. Boralv, 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. Decreau, 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. Stromme, A. Taylor, M. Vaivads, A. Villain, J.P. Voronkov, I. Wild, J.A. Wild, M. 2001 https://orbit.dtu.dk/en/publications/50ba3722-1445-4ba7-998f-e56fba821deb eng eng info:eu-repo/semantics/restrictedAccess Opgenoorth , H J , Lockwood , M , Alcayde , D , Donovan , E , Engebretson , M J , van Eyken , A P , Kauristie , K , Lester , M , Moen , J , Waterman , J , Alleyne , H , Andre , M , Dunlop , M W , Cornilleau-Wehrlin , N , Masson , A , Fazerkerley , A , Reme , H , Andre , R , Amm , O , Balogh , A , Behlke , R , Blelly , P L , Boholm , H , Boralv , 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 , Decreau , 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 , Stromme , A , Taylor , M , Vaivads , A , Villain , J P , Voronkov , I , Wild , J A & Wild , M 2001 , ' 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 ' , Annales Geophysicae , vol. 19 , no. 10-12 , pp. 1367-1398 . ionosphere reconnection ground-based observations magnetospheric cusp convection flow-channel Cluster article 2001 ftdtupubl 2023-11-15T23:56:17Z 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 Greenland between 13:00 and 14:00 UT During that interval, a sudden reorganisation of the high-latitude dayside convection pattern accurred 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 Sondre Stromfjord 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. Article in Journal/Newspaper EISCAT Greenland Sondre Stromfjord Svalbard Technical University of Denmark: DTU Orbit Svalbard Canada Greenland |