On the predominance of oblique disturbances in the supersonic shear flow instability of the geomagnetic tail boundary
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 l...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2003-01-01
|
| Series: | Nonlinear Processes in Geophysics |
| Online Access: | http://www.nonlin-processes-geophys.net/10/351/2003/npg-10-351-2003.pdf |
| id |
doaj-3045779a80884d9e8a9d47819aa99fa1 |
|---|---|
| record_format |
Article |
| spelling |
doaj-3045779a80884d9e8a9d47819aa99fa12020-11-24T23:11:21ZengCopernicus PublicationsNonlinear Processes in Geophysics1023-58091607-79462003-01-01104/5351361On the predominance of oblique disturbances in the supersonic shear flow instability of the geomagnetic tail boundaryV. V. MishinA 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.http://www.nonlin-processes-geophys.net/10/351/2003/npg-10-351-2003.pdf |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
V. V. Mishin |
| spellingShingle |
V. V. Mishin On the predominance of oblique disturbances in the supersonic shear flow instability of the geomagnetic tail boundary Nonlinear Processes in Geophysics |
| author_facet |
V. V. Mishin |
| author_sort |
V. V. Mishin |
| title |
On the predominance of oblique disturbances in the supersonic shear flow instability of the geomagnetic tail boundary |
| title_short |
On the predominance of oblique disturbances in the supersonic shear flow instability of the geomagnetic tail boundary |
| title_full |
On the predominance of oblique disturbances in the supersonic shear flow instability of the geomagnetic tail boundary |
| title_fullStr |
On the predominance of oblique disturbances in the supersonic shear flow instability of the geomagnetic tail boundary |
| title_full_unstemmed |
On the predominance of oblique disturbances in the supersonic shear flow instability of the geomagnetic tail boundary |
| title_sort |
on the predominance of oblique disturbances in the supersonic shear flow instability of the geomagnetic tail boundary |
| publisher |
Copernicus Publications |
| series |
Nonlinear Processes in Geophysics |
| issn |
1023-5809 1607-7946 |
| publishDate |
2003-01-01 |
| description |
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. |
| url |
http://www.nonlin-processes-geophys.net/10/351/2003/npg-10-351-2003.pdf |
| work_keys_str_mv |
AT vvmishin onthepredominanceofobliquedisturbancesinthesupersonicshearflowinstabilityofthegeomagnetictailboundary |
| _version_ |
1725604774911410176 |