The motion of magnetic flux tube at the dayside magnetopause under the influence of solar wind flow

Journal Article · Tue May 01 04:00:00 EDT 1990 · Journal of Geophysical Research; (United States)

DOI:https://doi.org/10.1029/JA095iA05p06561· OSTI ID:5103139

Liu, Z X; Hu, Y D; Li, F ^[1]; Pu, Z Y ^[2]

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1. Academia Sinica, Beijing (China)
2. Peking Univ., Beijing (China)

The authors propose that flux transfer events (FTEs) at the dayside magnetopause are formed by fluid vortices in the flow field. According to the view of vortex-induced reconnection a FTE tube is a magnetic fluid vortex tube (MF vortex tube). The motion of a FTE tube can be represented by that of a MF vortex in the formation region located in the dayside magnetopause region. This study deals with the internal and external influences governing the motion of MF vortex tubes. The equations of motion of a vortex tube are established and solved. It is found that a FTE tube moves frm low latitude to high latitude with a certain speed. However, the motional path is not a straight line but oscillates about the northward direction for the northern hemisphere. The motional velocity, amplitude and period of the oscillation depend on the flow field and magnetic field in the magnetosheath and magnetosphere as well as the size of the FTE tube.

• OSTI ID: 5103139
• Journal Information: Journal of Geophysical Research; (United States), Journal Name: Journal of Geophysical Research; (United States) Vol. 95:A5; ISSN 0148-0227; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

640201* -- Atmospheric Physics-- Auroral
Ionospheric
& Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLITUDES
DIFFERENTIAL EQUATIONS
EQUATIONS
EQUATIONS OF MOTION
INTERACTIONS
MAGNETIC FLUX
MAGNETIC RECONNECTION
MAGNETOPAUSE
MAGNETOSHEATH
MOTION
PARTIAL DIFFERENTIAL EQUATIONS
SOLAR ACTIVITY
SOLAR WIND
VELOCITY