Observation of the variations in the Earth's rotation at time scales ranging from subdiurnal to
multidecadal allows us to learn about its deep interior structure. We review all three types of …

Differential rotation of Earth's inner core relative to the mantle is thought to occur under the
effects of the geodynamo on core dynamics and gravitational core–mantle coupling. This …

Abstract Changes in the Earth's rotation are deeply connected to fluid dynamical processes
in the outer core. This connection can be explored by studying the associated Earth …

Thermal interactions between Earth's core and mantle provide the power that maintains the
geomagnetic field. However, the effect of these interactions and, in particular, the …

Earth's liquid core hosts a diverse set of waves with periods ranging from days to thousands
of years. One class of waves with periods of several decades is known to arise from an …

The differential axial rotation of the solid inner core (IC) is suggested by seismic
observations and expected from core dynamics models. A rotation of the IC by an angle α …

Seeking geophysical explanations for the periodic∼ six-year oscillation (SYO) previously
found in the Earth's length-of-day variation (ΔLOD), we analyze the global GPS …

The gravity fields of celestial bodies that possess an atmosphere are periodically perturbed
by the redistribution of fluid mass associated with atmospheric dynamics. A component of …

Earth's core oscillations and magnetic field inside the liquid outer core cannot be observed
directly from the surface, we can infer these information from the intradecadal variations in …

The inner core, extending to 1,221 km above the Earth's center at pressures between 329
and 364 GPa, is primarily composed of solid iron. Its rheological properties influence both …