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Nonthermal magnetospheric radio emissions provide the radio signatures of solar-terrestrial connection and may be used for
space weather forecasting. A three-wave model of auroral radio emissions at the fundamental plasma frequency was proposed
by Chian et al. (1994) involving resonant interactions of Langmuir, whistler and Alfvén waves. Chaos can appear in the nonlinear evolution
of this three-wave process in the magnetosphere. We discuss two types of intermittency in radio signals driven by temporal
chaos: the type-I Pomeau-Manneville intermittency and the interior crisis-induced intermittency. Examples of time series for
both types of intermittency are presented.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
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Chian A.C.-L. Borotto F.A. Rempel E.L. Macau E.E.N. Rosa R.R. Christiansen F. 《Space Science Reviews》2003,107(1-2):447-461
Space plasmas are dominated by waves, instabilities and turbulence. Dynamical systems approach offers powerful mathematical
and computational techniques to probe the origin and nature of space environment turbulence. Using the nonlinear dynamics
tools such as the bifurcation diagram and Poincaré maps, we study the transition from order to chaos, from weak to strong
chaos, and the destruction of a chaotic attractor. The characterization of the complex system dynamics of the space environment,
such as the Alfvén turbulence, can improve the capability of monitoring Sun-Earth connections and prediction of space weather.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
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