Nonlinear input/output analysis of the auroral electrojet index

Details Nonlinear input/output analysis of the auroral electrojet index Nonlinear input/output analysis of the auroral electrojet index

Jan 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994jgr....9913227p&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 99, no. A7, p. 13,227-13,238

Physics

17

Auroral Electrojets, Earth Magnetosphere, Interplanetary Magnetic Fields, Nonlinearity, Solar Wind, Solar Wind Velocity, Autoregressive Processes, Regression Analysis, Solar Activity Effects, Solar Terrestrial Interactions

Scientific paper

We analyze the auroral electrojet index for the days 30-31 October 1978 as the output of a nonlinear system driven by various aspects of the interplanetary magnetic field (IMF) and solar wind (speed and density). The nonlinear input/output analysis takes the form of a prediction scheme; we compare the results to an autoregressive (linear) predictor and to a nonlinear predictor based only on the output signal. Different combinations of the solar wind variables are used as input functions. We find that only a few of the input combinations show any evidence whatsoever for nonlinear coupling between the input and the output for this interval.

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