ON THlt NONLOCAL TURBULENCE OF DRIFT TYPE WAVES A.M. BALK, S.V. NAZARENKO Scientific Council on Complex Problems (Cybernetics), Academy ofSciences ofthe USSR,

Two new effects the drift turbulence can display are disclosed: (1) the turbulence spectrum in k-space separates into uncon-nected corn ponents of large and small scales, (2) the very presence of weak small-scale turbulence imposes rigid restrictions on powerful arge-scale components. 1. A wide variety of problems in the physics of the atmosphere and the ocean [ 1,2 1, in physics of mag-netized plasmas [ 3-61 and in astrophysics leads to a study of drift-type waves of Rossby waves having the dispersion law Bk w=l+pZk2 (k = (k,, k,) is a wave vector; 8, p are constants). The nonlinear interaction between waves may be different (see refs. [ l-91). For definiteness we con-sider the nonlinear dynamics of the waves to be de-scribed by the Chamey-Hasegawa-Mima (CHM) equation [ 1,3,4]: When the nonlinearity is small enough, then for a statistical description of the system of drift-type waves one can use the kinetic equation for wave