Raghavarao, R. ; Patra, A. K. ; Sripathi, S. (2002) Equatorial E region irregularities: a review of recent observations Journal of Atmospheric and Solar-Terrestrial Physics, 64 (12-14). pp. 1435-1443. ISSN 1364-6826
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/S1364-6826(02)00107-4
Abstract
The recent observations on the small-scale irregularities in the equatorial E region from locations other than those from the close vicinity of the electrojet (EJ) centre are reviewed. In particular, the diurnal characteristics of irregularities at low latitudes (>±4.5°) off the EJ centre at the dynamo heights reveal that they occur usually in the forenoons and afternoons and not around the noon hours when the EJ is most intense. These features are interpreted, by the EJ model calculations, as due to the electric fields and current densities engendered by the vertical shears in zonal winds (J. Geophys. Res. 92 (1987) 2514). The observational results on the '150km' irregularities are critically reviewed from the points of view of the respective causative mechanisms suggested earlier.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Plasma Irregularities; Equatorial Electrojet; Gradient Drift Instability; Wind Shear Effects |
| ID Code: | 79442 |
| Deposited On: | 27 Jan 2012 11:56 |
| Last Modified: | 27 Jan 2012 11:56 |
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