Physics – Fluid Dynamics
Scientific paper
Apr 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988georl..15..307g&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 15, April 1988, p. 307-310.
Physics
Fluid Dynamics
13
Auroras, Coriolis Effect, Fluid Dynamics, Neutral Currents, Thermosphere, Flow Velocity, Geostrophic Wind, Interplanetary Magnetic Fields, Rossby Regimes
Scientific paper
A simple nonlinear, axisymmetric, shallow-water numerical model has been used to study the asymmetry in the neutral flow between the dusk and dawn sides of the auroral oval. The results indicate that the Coriolis force and the curvature terms are nearly in balance on the evening side and require only a small pressure gradient to effect adjustment. The result is smaller neutral velocities near dawn and larger velocities near dusk than would be the case for a linearized treatment. A consequence is that more gravity wave energy is produced on the morning side than on the evening side.
Gundlach J. P.
Larsen Mark F.
Mikkelsen Ib Steen
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