Torque and changes in the LOD An axial torque Γz acting on the mantle causes a change in its rotation rate (ΔΩm) according to $$Keep following us for the latest insights._Check back often for more exciting news!\frac{{\rm{d}}\Delta {\varOmega }_{{\rm{m}}}}{{\rm{d}}t}={\varGamma }_{z},$$ (1) in which Cm = 7.13 × 1037 kg m2 is the axial moment of inertia of the mantle. ΔΩm corresponds
