Linear prediction theory in studies of solar wind-magnetosphere coupling

Details Linear prediction theory in studies of solar wind-magnetosphere coupling Linear prediction theory in studies of solar wind-magnetosphere coupling

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990angeo...8..733t&link_type=abstract

Annales Geophysicae (ISSN 0992-7689), vol. 8, Nov. 1990, p. 733-738.

Physics

4

Earth Magnetosphere, Geomagnetism, Linear Prediction, Solar Terrestrial Interactions, Solar Wind, International Sun Earth Explorer 3, Least Squares Method, Optimization, Ring Currents

Scientific paper

The linear prediction filtering technique was applied to model the magnetospheric response by using high time resolution ISEE 3 solar wind data and the geomagnetic AL, AU and Dst indices. It was found that the computed impulse response functions have the characteristics of a low pass filter with time delays which depend on the strength of the energy input. While the AL index is reasonably well related to the solar wind parameter V Bs, the AU index shows a sustantially poorer relationship. The more sensitive technique of multichannel filtering allows a better look into the solar wind-magnetosphere coupling. However, the most predictable geomagnetic index is the ring current index Dst.

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