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Detailed Reference Information |
Keskinen, M.J., Ossakow, S.L. and Fejer, B.G. (2003). Three-dimensional nonlinear evolution of equatorial ionospheric spread-F bubbles. Geophysical Research Letters 30: doi: 10.1029/2003GL017418. issn: 0094-8276. |
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Using numerical simulation techniques, we present the first study of the three-dimensional nonlinear evolution of an equatorial spread-F bubble. The background ionosphere used to initialize the bubble evolution is computed using a time-dependent first-principles equatorial plasma fountain model together with a prereversal enhancement vertical drift model. We find that finite parallel conductivity effects slow down both the linear and nonlinear bubble evolution compared to the two-dimensional evolution. In addition we find that bubble-like structures with extremely sharp density gradients can be generated off the equator at equatorial anomaly latitudes in agreement with recent observations. |
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Abstract |
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Keywords
Ionosphere, Equatorial ionosphere, Ionosphere, Ionospheric irregularities, Ionosphere, Modeling and forecasting, Ionosphere, Plasma waves and instabilities |
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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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