Dynamical auroral morphology in relation to ionospheric plasma convection and geomagnetic activity: Signatures of magnetopause X line dynamics and flux transfer events
作者： M. Øieroset , H. Lühr , J. Moen , T. Moretto , P. E. Sandholt
DOI: 10.1029/96JA00613
关键词: Earth's magnetic field 、 Physics 、 Geophysics 、 Incoherent scatter 、 Solar wind 、 Magnetic reconnection 、 Ionosphere 、 Magnetopause 、 Ionospheric dynamo region 、 Interplanetary magnetic field
摘要: Ground-based observations of auroral, geomagnetic, and radar signatures solar wind-magnetosphere coupling modes are presented. Two different categories ionospheric studied: (1) enhanced geomagnetic deflections associated equatorward displacements the cusp/cleft aurora (2) a sequence poleward moving auroral events. It is suggested that signature 1 mainly caused by directional discontinuities in interplanetary magnetic field changing geometry 2 recurring modulation reconnection rate at dayside magnetopause (flux transfer events (FTEs)), during period strong coupling. The observed placed context plasma convection, as derived from magnetometers Svalbard, Greenland, Canada, European incoherent scatter (EISGAT) radar. A suggestion for an current system explaining propagating events, i.e., FTE signatures,
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