Fluctuation-dissipation phenomena in the Earth pole oscillations

Abstract

Abstract Earth pole oscillations at the Chandler frequency are studied taking into account nonlinear fluctuation-dissipative moments of forces and disturbances at the Chandler frequency and those close to it. For the stationary mode, the dependence of the external perturbation amplitude at the Chandler frequency on the dissipation coefficients is found. It is shown that the amplitude of the Chandler wobble is sensitive to the difference between the Chandler and close to it frequencies and nonlinear dissipation coefficients.