Abstract
This paper presents a theoretical basis for elastic and viscoelastic deformations of the Earth and analyses the rotation of a deformable planet having a fluid core and a solid inner core. Section 2 reviews the concepts that become indispensable when we pass from the model of the Earth as a rigid body to its more realistic model as a deformable planet. In this realistic model, variations in the physical parameters allow us to understand convection within the mantle, stratification into solid and fluid parts, and evolution of the Earth’s density and inertia tensor. Section 3 addresses detailed problems in the theory of deformations, in particular the effect of rheology. Finally Sect. 4 studies how a deformable, stratified Earth actually rotates.
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Legros, H., Greff, M., Tokieda, M. (2006). Physics of the Earth’s Interior, Deformation and Rotation. In: Souchay, J. (eds) Dynamics of Extended Celestial Bodies and Rings. Lecture Notes in Physics, vol 682. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-32455-0_2
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