Other
Scientific paper
Nov 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984p%26ss...32.1335k&link_type=abstract
(International Association of Geomagnetism and Aeronomy, Symposium on Theory and Modelling of Hydromagnetic Waves, Hamburg, West
Other
37
Kelvin-Helmholtz Instability, Magnetopause, Space Plasmas, Boundary Layer Plasmas, Propagation Velocity
Scientific paper
Conditions for the development of Kelvin-Helmholtz (K-H) waves on the magnetopause have been known for more than 15 years; more recently, spacecraft observations have stimulated further examination of the properties of K-H waves. For a magnetopause with no boundary layer, two different modes of surface waves have been identified and their properties have been investigated for various assumed orientations of magnetic field and flow velocity vectors. The power radiated into the magnetosphere from the velocity shear at the boundary has been estimated. Other calculations have focused on the consequences of finite thickness boundary layers, both uniform and nonuniform. The boundary layer is found to modify the wave modes present at the magnetopause and to yield a criterion for the wavelength of the fastest growing surface waves. The paper concludes by questioning the extent to which the inferences from boundary layer models are model dependent and identifies areas where further work is needed or anticipated.
Galland Kivelson Margaret
Pu Zu Yin
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