By taking into account the variable free polar motion (PM) known as the Chandler wobble
(CW) and irregular forced PM excited by quasi-periodic changes in atmosphere, oceans and …

The Chandler wobble (CW) and annual wobble (AW) are the two main components of polar
motion, which are difficult to separate because of their very close periods. In the light of …

The Earth's rotation is nonuniform: the position of the pole drifts and describes circles with
the annual and Chandler (433 days) periods; the Earth's rotation velocity also varies. In the …

The normal Morlet wavelet transform (NMWT), which is a mathematical method for harmonic
analysis, is defined in this study by resorting to L1 normalization continuous wavelet …

Investigations of the anomalies in the Earth rotation, in particular, the polar motion
components, play an important role in our understanding of the processes that drive …

We derive the Chandler wobble excitation from the polar motion (PM) observations by using
the Panteleev corrective filtering. The latter method is based on inversion of the Euler …

We investigate the influence of the structure and dynamics of the liquid outer core on the
Earth's rotational modes through the squared Brunt–Väisälä frequency N 2. The frequencies …

Abstract Earth Rotation Parameters (ERP) are indispensable in the transformation between
the Celestial Reference Frame and the Terrestrial Reference Frame, and significant for high …

We demonstrate a simple physical explanation for the cause of the well-known but so-far
baffling behavior of the Chandler wobble during∼ 1925 when it reached a near-zero …

The possibility of a link between asymmetrical Earth's expansion and Polar Motions (PM) is
investigated, searching for possible mechanisms of inner and/or surface material …