Large aspect angles in auroral E region echoes: A self-consistent turbulent fluid theory

Details Large aspect angles in auroral E region echoes: A self-consistent turbulent fluid theory Large aspect angles in auroral E region echoes: A self-consistent turbulent fluid theory

Apr 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995jgr...100.5723h&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 100, no. A4, p. 5723-5732

Mathematics

Functional Analysis

12

Advection, Angles (Geometry), Auroral Echoes, Collision Rates, E Region, Electron Scattering, Plasma Waves, Transport Properties, Turbulent Flow, Collisional Plasmas, Continuity Equation, Equations Of Motion, Functional Analysis, Geomagnetism, Nonlinear Systems, Self Consistent Fields, Two Fluid Models

Scientific paper

We use a recently formulated fluid theory of turbulent Farley-Buneman waves to study the impact of anomalous transport coefficients on the aspect of angles of large- amplitude waves in the high-latitude E region in the strong nonlinear regime. The theory is self-consistent and contains all the nonlinearities of the system except for the generation of unstable secondary waves through a two-step process, which has been studied elsewhere. Our study leads us to conclude that nonlinear processes are responsible for an increase in the aspect angles of large-amplitude wave through an increase in the scattering of electrons in the direction parallel to the geomagnetic field in conjunction with a lack of any significant increase in the scattering of electrons by waves in the plane perpendicular to the geomagnetic field.

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