The changing topology of the duskside magnetopause boundary layer in relation to IMF orientation
On 7 December 2000, Cluster made an extended outbound radial traversal of the duskside magnetopause boundary layer. The long duration of the crossing, during which Cluster spent several hours within 2RE of the nominal magnetopause, allows us to deconvolve the structure of this boundary layer in its...
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todo:paper_02731177_v37_n3_p497_Lund2023-10-03T15:15:35Z The changing topology of the duskside magnetopause boundary layer in relation to IMF orientation Lund, E.J. Farrugia, C.J. Sandholt, P.E. Kistler, L.M. Fairfield, D.H. Gratton, F.T. Cowley, S.W.H. Wild, J.A. Mouikis, C.G. Dunlop, M.W. Rème, H. Carlson, C.W. Boundary layers Kelvin-Helmholtz instability Multispacecraft measurements Reconnection Solar wind-magnetosphere coupling Magnetic field effects Solar system Kelvin-Helmholtz instability Multispacecraft measurements Reconnection Solar wind-magnetosphere coupling Boundary layers On 7 December 2000, Cluster made an extended outbound radial traversal of the duskside magnetopause boundary layer. The long duration of the crossing, during which Cluster spent several hours within 2RE of the nominal magnetopause, allows us to deconvolve the structure of this boundary layer in its dependence on interplanetary parameters. We present evidence that as the interplanetary magnetic field (IMF) changed in discontinuous jumps from southward to northward, the magnetic topology of the boundary layer evolved from open to closed. Reconnection signatures, including enhanced flows observed locally at Cluster and ion energy dispersion signatures observed by FAST near Cluster's magnetic footpoint, appeared while the IMF was southward. When the IMF turned nearly due northward, Cluster observed 75-s (Pc 4) oscillations which we attribute to the Kelvin-Helmholtz instability. © 2004 COSPAR. Fil:Gratton, F.T. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_02731177_v37_n3_p497_Lund |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Boundary layers Kelvin-Helmholtz instability Multispacecraft measurements Reconnection Solar wind-magnetosphere coupling Magnetic field effects Solar system Kelvin-Helmholtz instability Multispacecraft measurements Reconnection Solar wind-magnetosphere coupling Boundary layers |
| spellingShingle |
Boundary layers Kelvin-Helmholtz instability Multispacecraft measurements Reconnection Solar wind-magnetosphere coupling Magnetic field effects Solar system Kelvin-Helmholtz instability Multispacecraft measurements Reconnection Solar wind-magnetosphere coupling Boundary layers Lund, E.J. Farrugia, C.J. Sandholt, P.E. Kistler, L.M. Fairfield, D.H. Gratton, F.T. Cowley, S.W.H. Wild, J.A. Mouikis, C.G. Dunlop, M.W. Rème, H. Carlson, C.W. The changing topology of the duskside magnetopause boundary layer in relation to IMF orientation |
| topic_facet |
Boundary layers Kelvin-Helmholtz instability Multispacecraft measurements Reconnection Solar wind-magnetosphere coupling Magnetic field effects Solar system Kelvin-Helmholtz instability Multispacecraft measurements Reconnection Solar wind-magnetosphere coupling Boundary layers |
| description |
On 7 December 2000, Cluster made an extended outbound radial traversal of the duskside magnetopause boundary layer. The long duration of the crossing, during which Cluster spent several hours within 2RE of the nominal magnetopause, allows us to deconvolve the structure of this boundary layer in its dependence on interplanetary parameters. We present evidence that as the interplanetary magnetic field (IMF) changed in discontinuous jumps from southward to northward, the magnetic topology of the boundary layer evolved from open to closed. Reconnection signatures, including enhanced flows observed locally at Cluster and ion energy dispersion signatures observed by FAST near Cluster's magnetic footpoint, appeared while the IMF was southward. When the IMF turned nearly due northward, Cluster observed 75-s (Pc 4) oscillations which we attribute to the Kelvin-Helmholtz instability. © 2004 COSPAR. |
| format |
JOUR |
| author |
Lund, E.J. Farrugia, C.J. Sandholt, P.E. Kistler, L.M. Fairfield, D.H. Gratton, F.T. Cowley, S.W.H. Wild, J.A. Mouikis, C.G. Dunlop, M.W. Rème, H. Carlson, C.W. |
| author_facet |
Lund, E.J. Farrugia, C.J. Sandholt, P.E. Kistler, L.M. Fairfield, D.H. Gratton, F.T. Cowley, S.W.H. Wild, J.A. Mouikis, C.G. Dunlop, M.W. Rème, H. Carlson, C.W. |
| author_sort |
Lund, E.J. |
| title |
The changing topology of the duskside magnetopause boundary layer in relation to IMF orientation |
| title_short |
The changing topology of the duskside magnetopause boundary layer in relation to IMF orientation |
| title_full |
The changing topology of the duskside magnetopause boundary layer in relation to IMF orientation |
| title_fullStr |
The changing topology of the duskside magnetopause boundary layer in relation to IMF orientation |
| title_full_unstemmed |
The changing topology of the duskside magnetopause boundary layer in relation to IMF orientation |
| title_sort |
changing topology of the duskside magnetopause boundary layer in relation to imf orientation |
| url |
http://hdl.handle.net/20.500.12110/paper_02731177_v37_n3_p497_Lund |
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