Delta C22

Satellite gravity constraints on inner core viscosity and LLVPs density anomalies

arXiv:2606.09296v1 Announce Type: new Abstract: Constraining the physical properties of Earth's deep interior, particularly the viscosity of the solid inner core and the density structure of large low-velocity provinces (LLVPs), remains a major challenge in geophysics. Here we develop a unified dynamical framework that combines mantle-inner core gravitational coupling (MICG) with torsional oscillations in the fluid outer core and show that their interaction can produce a distinct and...