title: Influence of parametric forcing on the nonequilibrium dynamics of wave patterns.
abstract: We investigate analytically and numerically the effect of inhomogeneities on the nonequilibrium dynamics of wave patterns in the framework of a complex Ginzburg-Landau equation (CGLE) with parametric, nonresonant forcing periodic in space and time. It is found that the forcing results in occurrence of traveling waves with different dispersion properties. In the limiting case of forcing with very large wavelength, the waves have essentially anharmonic spatial structure. We consider the influence of modulations on the development of an intermittent chaos and show that the parametric forcing may completely suppress the appearance of chaotic patterns. The relations between this and other pattern-forming systems are discussed. The results obtained are applied to describe the dynamics of thermal Rossby waves influenced by surface topography.
authors.affiliation: Department of Applied Mathematics, Illinois Institute of Technology, Chicago, Illinois 60616, USA.
authors.forename: S I
authors.initials: SI
authors.lastname: Abarzhi
authors.forename: O
authors.initials: O
authors.lastname: Desjardins
authors.forename: A
authors.initials: A
authors.lastname: Nepomnyashchy
authors.forename: H
authors.initials: H
authors.lastname: Pitsch