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| Titel |
Theory and observation of double discontinuities |
| VerfasserIn |
Y. C. Whang |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 11, no. 2 ; Nr. 11, no. 2 (2004-04-14), S.259-266 |
| Datensatznummer |
250009138
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| Publikation (Nr.) |
 copernicus.org/npg-11-259-2004.pdf |
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| Zusammenfassung |
| Recent research using high-resolution magnetic field data to examine the interior
structures of MHD shocks in interplanetary space and in the magnetotail led to a
surprising discovery that a slow-mode shock is often followed by an adjoining rotational
discontinuity layer on the postshock side. The thickness of each layer is of the order
of a few ion inertial lengths. Such a compound structure is known as a double
discontinuity. When the magnetic field rotates by several degrees per ion inertial
length inside a thin layer, the Hall current term becomes important in the generalized
Ohm's law. Steady state solutions based on the Hall-MHD theory have been obtained to
show the merging of a rotational layer and a slow shock layer to form a compound
structure like the observed double discontinuities. |
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