Locality of ion-drift wave spectra in weakly-turbulent dusty plasmas

The locality of weakly turbulent Kolmogorov spectra for the ion-drift waves in dusty plasmas and the flute waves in electron-ion plasmas is analyzed. Using a standard kinetic approach for the description of the wave turbulenc e it is shown that the wave spectrum associated with the enstrophy flux is nonlocal whereas that related to the energy flux is local. The nonlocality of the wave enstrophy spectrum is associated with the long wavelength part of the turbulence. It is found that the wave energy flux is directed to sma ller spatial scales. (C) 2001 American Institute of Physics.