Electrostatic plasma turbulence in the topside equatorial F region ionosphere

Details Electrostatic plasma turbulence in the topside equatorial F region ionosphere Electrostatic plasma turbulence in the topside equatorial F region ionosphere

Oct 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002jgra..107.1269h&link_type=abstract

Journal of Geophysical Research (Space Physics), Volume 107, Issue A10, pp. SIA 1-1, CiteID 1269, DOI 10.1029/2001JA000227

Physics

Plasma Physics

1

Ionosphere: Equatorial Ionosphere, Ionosphere: Ionospheric Irregularities, Ionosphere: Plasma Waves And Instabilities, Mathematical Geophysics: Nonlinear Dynamics, Space Plasma Physics: Numerical Simulation Studies

Scientific paper

Two-dimensional, turbulent plasma flows in the topside equatorial F region ionosphere associated with fully developed equatorial spread F are analyzed and simulated numerically. In the inertially dominated flow regime, the governing equations of motion resemble the Navier Stokes equation but are cubicly nonlinear. Large amplitude density irregularities are prerequisite for inertial effects to be important, but when these are present, the third-order nonlinear effects become significant, mean-squared velocity and vorticity cease to be conserved by nonlinear mode coupling, and the foundations of the turbulent cascade theory of Kraichnan [1967] are undermined. Nonetheless, one-dimensional, angle-averaged velocity spectra computed from simulated flows exhibit similarity ranges with k-5/3 and k-3 power laws, resembling inertial ranges and suggesting turbulent cascades. Invariants of the flow (quantities conserved by nonlinear mode coupling) are found which are generalizations of the quadratic forms of kinetic energy and enstrophy and which are dimensionally equivalent to them. Statistical properties of the flow appear to permit turbulent cascades to arise.

Affiliated with

Also associated with

No associations

Rating

Electrostatic plasma turbulence in the topside equatorial F region ionosphere does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Electrostatic plasma turbulence in the topside equatorial F region ionosphere, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrostatic plasma turbulence in the topside equatorial F region ionosphere will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1425472