Physics – Geophysics
Scientific paper
Jul 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995jgr...10012001f&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 100, no. A7, p. 12,001-12,009
Physics
Geophysics
5
Geophysics, Magnetic Field Reconnection, Magnetohydrodynamics, Magnetopause, Stochastic Processes, Two Dimensional Models, Current Sheets, Interplanetary Magnetic Fields, Reynolds Number, Shear Flow, Solar Wind
Scientific paper
A two-dimensional MHD simulation model is presented to study stochastic reconnection at the magnetopause. The simulation indicates that in an open system with strong velocity shear and large Reynolds and magnetic Reynolds number (R and R(sub m)), stochastic reconnection can take place in the magnetopause current sheet when the interplanetary magnetic field has a southward component, leading to the appearance of irregular mesoscale and small-scale structures (IMSSSs). The larger the R and R(sub m) are, the more IMSSSs are produced. The stronger the flow shear intensity is, the faster IMSSSs occur. Mesoscale and small-scale structures can coalesce to form large-scale ones if R and R(sub m) are midranged (10 to 200), while large and mesoscale structures can break into smaller ones if R and R(sub m) increase. It is expected that stochastic reconnection plays an important role in the solar wind-magnetosphere coupling.
Fu S. Y.
Liu Zhen-Xing
Pu Zu Yin
Zong Q. C.
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