Affiliation: | 1. Department of Nonlinear Geophysical Processes , Institute of Applied Physics , 46 Uljanov Street, Nizhny Novgorod, 603950, Russia;2. Department of Mathematics, Research Institute for the Environment, Physical Sciences and Applied Mathematics , Keele University , Keele, ST5 5BG, UK slunyaev@hydro.appl.sci-nnov.ru;4. Department of Mechanics and Applied Mathematics , Institute of Cybernetics , Akadeemiatee 21, 12618 Tallinn, Estonia;5. Department of Information Systems , Higher School of Economics , 24 Pecherskaya Street, Nizhny Novgorod, Russia |