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| Titel |
On the predominance of oblique disturbances in the supersonic shear flow instability of the geomagnetic tail boundary |
| VerfasserIn |
V. V. Mishin |
| 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 ; 10, no. 4/5 ; Nr. 10, no. 4/5, S.351-361 |
| Datensatznummer |
250007836
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| Publikation (Nr.) |
 copernicus.org/npg-10-351-2003.pdf |
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| Zusammenfassung |
| A study is made of
the influence of the longitudinal magnetic field and density inhomogeneity
on the supersonic shear flow instability at the magnetospheric tail
boundary. It is shown that the most unstable are slow oblique (3D)
disturbances, with a phase velocity approaching at a sufficiently large
angle (with respect to the flow direction) the magnetosonic velocity.
Their growth rate and spectral width are much larger than those of the
usually considered longitudinal (2D) supersonic disturbances. The magnetic
field reduces the compressibility effect and, unlike the subsonic case,
has a noticeable destabilizing effect on the excitation of oblique
disturbances. |
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