Two-dimensional turbulence in equatorial spread F

Details Two-dimensional turbulence in equatorial spread F Two-dimensional turbulence in equatorial spread F

Sep 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jgr....83.4369k&link_type=abstract

Journal of Geophysical Research, vol. 83, Sept. 1, 1978, p. 4369-4372.

Physics

4

Atmospheric Turbulence, Equatorial Atmosphere, Ionospheric Disturbances, Spread F, Two Dimensional Flow, Collisionless Plasmas, Computerized Simulation, Convective Heat Transfer, Earth Ionosphere, Plasma Density, Turbulent Heat Transfer

Scientific paper

Concepts considered by Ott (1978) in an analytic model are extended, taking into account the origin of drag. It is shown how both large-scale and small-scale density irregularities arise in the region between bubbles. Qualified and preliminary predictions are made concerning the wave number spectrum of velocity, electric field, and density irregularities in this region. Attention is given to the role and implications of vortex formation in equatorial spread F and some implications of two-dimensional turbulence theory. It is shown that the upwelling low-density regions which occur during equatorial spread F should create sets of counterrotating vortices in the background fluid which form a wake behind the bubble.

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