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

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

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....95.6561l&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 95, May 1, 1990, p. 6561-6567. Research supported by the National Natural

Physics

2

Daytime, Flux Transfer Events, Magnetic Flux, Magnetopause, Solar Terrestrial Interactions, Solar Wind, Vortices, Equations Of Motion, Magnetic Fields, Magnetosheath, Pivots

Scientific paper

It is proposed 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 an FTE tubes moves from low latitude to high latitude with a certain speed. However, the motion path is not a straight line but oscillates about the northward direction for the Northern Hemisphere. The motion velocity, amplitude, and period of oscillation depend on the flow field and magnetic field in the magnetosheath and magnetosphere as well on the size of the FTE tube.

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