Uberoi, C (1984) A Note on Southwood's Instability Criterion. In: Journal Geophysical Research, 89 (A7). pp. 5652-5654.
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It is shown that Southwood's instability criterion for the onset of the Kelvin-Helmholtz instability at the magnetopause can be directly obtained from the marginal instability condition for the pure Alfven surface waves propagating along the interface between two incompressible media in the limit when the wave propagation direction is nearly perpendicular to the direction of the largest magnetic field. The phase velocity of the surface waves first excited at the onset of the instability depends on the angle between the interplanetary magnetic field and flow velocity in the solar wind in front of the bow shock.
| Item Type: | Journal Article |
|---|---|
| Publication: | Journal Geophysical Research |
| Publisher: | Amer Geophysical Union |
| Additional Information: | Copyright for this article belongs to Amer Geophysical Union. |
| Department/Centre: | Division of Physical & Mathematical Sciences > Mathematics |
| Date Deposited: | 10 Feb 2010 04:47 |
| Last Modified: | 11 Feb 2010 11:01 |
| URI: | http://eprints.iisc.ac.in/id/eprint/22345 |
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