Structure instability and nonlinear evolution of magnetic islands at the magnetopause

Details Structure instability and nonlinear evolution of magnetic islands at the magnetopause Structure instability and nonlinear evolution of magnetic islands at the magnetopause

Jan 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997jgr...102...69p&link_type=abstract

Journal of Geophysical Research, Volume 102, Issue A1, p. 69-76

Physics

Plasma Physics

2

Magnetospheric Physics: Magnetopause, Cusp, And Boundary Layers, Magnetospheric Physics: Magnetospheric Configuration And Dynamics, Mathematical Geophysics: Chaos, Space Plasma Physics: Magnetic Reconnection

Scientific paper

Structure instability and nonlinear evolution of magnetic islands produced by time-dependent magnetic reconnection at the magnetopause are studied. The analytic expression for the width of magnetic islands and critical conditions for the occurrence of bifurcation and chaos are derived. It is shown that the magnetic islands are unstable against the interference from external disturbances. Their structure can be destroyed by medium and small-scale solar wind turbulences, leading to stochastic magnetic reconnection and the formation of irregular small-scale structures in magnetospheric boundary regions.

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