Oceanic influence on the seasonal polar motion

Oceanic contributions to the seasonal wobbles of polar motion are evaluated using three different ocean circulation models: (a) the POCM (Parallel Ocean Climate Model); (b) the model by Ponte et al. (1998); (c) the model by Thomas and Suendermann (1998). The excitation ellipses are given at annual, semi-annual and thrice-yearly periods. These ellipse parameters are compared to differences: (excitation from observations) - (atmospheric part). The model by Ponte et al. nearly closes the balance. (orig.)SIGLEAvailable from TIB Hannover: RR 6134(99/10) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman