%0 Journal Article %T Mathematical Technology for Estimating Parametric Functions of Non-Stationary Geophysical Signals %A Getmanov, V.G. %A Pilipenko, V.A. %K Geophysical signals, geomagnetic pulsations, non-stationary parameters, two-stage approximation, local approximations, weighted averaging %J Russian Journal of Earth Sciences %D 2026 %N 26 %P 14 %I Geophysical Center of the Russian Academy of Sciences