Dissipative layer near the magnetopause

Details Dissipative layer near the magnetopause Dissipative layer near the magnetopause

Feb 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987ge%26ae..27...75a&link_type=abstract

Geomagnetizm i Aeronomiia (ISSN 0016-7940), vol. 27, Jan.-Feb. 1987, p. 75-80. In Russian.

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Atmospheric Boundary Layer, Interplanetary Magnetic Fields, Magnetopause, Plasma-Electromagnetic Interaction, Solar Terrestrial Interactions, Solar Wind, Axisymmetric Bodies, Computational Fluid Dynamics, Dissipation, Flow Deflection, Ideal Fluids, Kinematic Equations

Scientific paper

The paper considers the electric and magnetic fields that arise as a result of the distortion of the uniform IMF during solar-wind flow past the earth magnetosphere. The case of finite isotropic conductivity is examined; the solar wind is represented as an ideal fluid, while the magnetopause is assumed to be axisymmetric. It is demonstrated that the effect of finite conductivity is substantial only in the thin dissipative layer near the magnetopause,; outside of this layer, the frozen-in approximation is held to be valid. The thicknesses of the dissipative layer are calculated, and the electric and magnetic fields in the entire flow region are assessed. It is shown that, at the surface of the magnetopause, Et and Bn behave as Rm exp -0.25 while En and Bt behave as Rm exp 0.25 (where Rm is the magnetic Reynolds number).

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