Pattern competition intermittency and selective flicker noise in spatiotemporal chaos

For a coupled map lattice with a medium strength of nonlinearity, pattern selection and competition occur. Intermittent collapse of the selected pattern is found as the increase of nonlinearity. The intermittency is studied through the spatial and spatio- temporal power spectra. The latter show a flicker-like noise at low frequency only for modes of wavenumbers corresponding to the selected patterns. The scaling analysis with the change of the wavenumber and the window size is performed.