Mathematics – Dynamical Systems
Scientific paper
May 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992p%26ss...40..731p&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 40, no. 5, May 1992, p. 731-739.
Mathematics
Dynamical Systems
1
Earth Magnetosphere, Geomagnetic Pulsations, Magnetic Storms, Phenomenology, Dynamical Systems, Energy Transfer, Interplanetary Medium, Stochastic Processes
Scientific paper
Possible modifications and generalizations of the phenomenological model of the Dst storm variation proposed by Burton et al. (1975) are analyzed. The Dst storm variation is considered to be an output signal of some dynamic system. Stochastic generalizations are discussed with due account of additive and multiplicative noise. A method of modeling the dst variation of a magnetospheric storm using data on the regime of different types of geomagnetic pulsations at midlatitudes is proposed. The analysis is carried out in terms of the theory of fluctuation and critical phenomena. The model's tenability indicates the important role played by the pulsations in energy accumulation and dissipation processes during a geomagnetic storm.
Poliushkina T. N.
Potapov Alexandre S.
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