Physics
Scientific paper
Aug 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979esasp.148..357s&link_type=abstract
In ESA Magnetospheric Boundary Layers p 357-364 (SEE N80-13529 04-42)
Physics
4
Boundary Layer Plasmas, Kelvin-Helmholtz Instability, Magnetopause, Geomagnetism, International Sun Earth Explorer 1, International Sun Earth Explorer 2, Mass Transfer, Momentum Transfer, Plasma Turbulence, Surface Waves
Scientific paper
The Kelvin-Helmholtz instability as it applies to the dayside magnetopause is reviewed. Simple theory suggests the boundary should generally be unstable to waves moving at a large angle to the Earth's field. Nonlinear effects, how amplitudes might be limited, and what dynamic role the instability could have in boundary regions in stimulating mass and momentum transfer are discussed. Examination of data from a particular ISEE spacecraft pass shows relatively small amplitude (750 km) waves present on the boundary. Corresponding wavelength estimates show wave momentum is not significant at the time of the pass.
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