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| Titel |
A generalization of the minimum variance analysis method |
| VerfasserIn |
H. Kawano, T. Higuchi |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 14, no. 10 ; Nr. 14, no. 10, S.1019-1024 |
| Datensatznummer |
250012425
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| Publikation (Nr.) |
 copernicus.org/angeo-14-1019-1996.pdf |
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| Zusammenfassung |
| In order to determine the normal direction of
the magnetopause, the minimum variance analysis technique is frequently used: it
is applied to the magnetic field data of a magnetopause crossing observed by a
satellite, and provides the direction along which the magnetic field variation
is minimum. In this study we propose a method to extend naturally the framework
of the minimum variance analysis so that it includes all continuity conditions
across a planar magnetopause, so that we could use all physical quantities
observed by the spacecraft. We first extend it to the electric field: we discuss
how to determine the normal direction and the speed of the magnetopause along
the normal by using both the magnetic and electric field data. We next discuss
the full extension to all continuity conditions across the magnetopause.
Finally, we discuss how to extend our method further so that it can deal with
the magnetopause which is accelerating. A discussion of application to
observations will appear separately. |
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