Geomagnetic activity onset predictions: problems with possible signatures in cosmic rays.

Details Geomagnetic activity onset predictions: problems with possible signatures in cosmic rays. Geomagnetic activity onset predictions: problems with possible signatures in cosmic rays.

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003esasp.535..575k&link_type=abstract

In: Solar variability as an input to the Earth's environment. International Solar Cycle Studies (ISCS) Symposium, 23 - 28 June 2

Computer Science

Geomagnetic Activity, Cosmic Rays

Scientific paper

Predictions of geomagnetic activity marked by strong sudden decreases of Dst are mainly based on time series of solar wind, n, v, and Bz of IMF. CR particles with large gyroradius and mean free path for scattering on IMF inhomogeneities, are of interest for eventual geomagnetic disturbances predictions. The redistribution of IMF structures, as CMEs are, can be "seen" by CR at Earth's orbit well before CME is reaching it. The anisotropy of CR and its simplified measures according to the variability observed at neutron monitors (NM) with different asymptotic directions are discussed. For the period 1982-2002 the behaviour of CR at selected NMs are summarized before the onset of geoeffective events and compared with the quiet time periods.

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