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    Coupling of two computational models of the Earth's magnetosphere

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    Author
    Hojo, Michikazu
    Date
    1997
    Advisor
    Wolf, Richard A.
    Degree
    Master of Science
    Abstract
    The first major step has been completed in a long range project to merge the Fedder-Lyon Global 3D magnetohydrodynamic code and the Rice Convection Model (RCM) of the Earth's magnetosphere. Using MHD results as initial and boundary conditions, RCM runs were carried out for three different values of the energy invariant $\lambda$ of the plasma-sheet ions: $\lambda$ = negligibly small as in ideal MHD, $\lambda$ estimated from global MHD results, and $\lambda$ estimated from observations. In the first two runs, the RCM produced thin, well-defined patterns of region-2 magnetic-field-aligned currents shielding the inner magnetosphere from the convection electric field. These results differed substantially from the MHD result, indicating inaccuracy in the MHD code's numerical method when applied to the inner magnetosphere. The third run produced weak shielding and non-classic current patterns, which provide insight into the effect of plasma-sheet temperature on shielding.
    Keyword
    Astronomy; Astrophysics; Plasma physics
    Citation
    Hojo, Michikazu. "Coupling of two computational models of the Earth's magnetosphere." (1997) Master’s Thesis, Rice University. http://hdl.handle.net/1911/17096.
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    Managed by the Digital Scholarship Services at Fondren Library, Rice University
    Physical Address: 6100 Main Street, Houston, Texas 77005
    Mailing Address: MS-44, P.O.BOX 1892, Houston, Texas 77251-1892