ON THE GENERATION OF ROSSBY WAVES BY A MO VING LOCALIZED SOURCE OF VARYING INTENSITY

The problem of the evolution of Rossby waves generated by a spatially localized external source moving with constant velocity u is studied. The intensity of the source can change with time harmonically with fre quency sigma. For large time an asymptotics of the solution of the pro blem is found valid both-near the source and far from it. This asympto tics allowed us to disclose the basic properties of the generated wave s. The cases of standing (u = 0) and moving (u not equivalent to 0) so urce of steady (sigma = 0) and varying (sigma not equivalent to 0) int ensity are considered.