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Detailed Reference Information |
Albert, J.M., Similon, P.L. and Sudan, R.N. (1991). An almost two-dimensional approach to type 2 irregularities in the equatorial electrojet. Journal of Geophysical Research 96: doi: 10.1029/91JA01547. issn: 0148-0227. |
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A recently develped theory of ''almost two-dimensional'' turbulence (Albert et al., 1990) is applied to E¿B fluctuations in the E region equatorial electrojet. This theory of plasma turbulence in an external magnetic field extends strictly two-dimensional theory (e.g., Sundan and Keskinen, 1979) to include weak phase variations along the magnetic field. Based on the direct interaction approximation of Kraichnan (1959), it describes the tendency of spectral energy to transfer nonlinearly towards modes with high k∥ despite strong linear damping of these modes. Here, we discuss application of this theory to the aspcet angle k∥ of fluctuations at 3-m scales, for which radar backscatter measurements have been made (Kudeki and Farley, 1989). Allowing for uncertainty in characterizing the plasma turbulence, we find good agreement except at the lowest altitudes of the electrojet. ¿American Geophysical Union 1991 |
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Abstract |
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Keywords
Ionosphere, Ionospheric irregularities, Ionosphere, Equatorial ionosphere, Ionosphere, Plasma waves and instabilities, Interplanetary Physics, Plasma waves and turbulence |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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