#Seismic travel times suggest that "#innercore rotation has recently paused. This seems to be associated with gradual turning-back of inner core as part of ~7 decade oscillation, which coincides with changes in several other #geophysical observations."
https://www.nature.com/articles/s41561-022-01112-z
https://www.nature.com/articles/s41561-022-01112-z
Multidecadal variation of the Earth’s inner-core rotation - Nature Geoscience
Multidecadal oscillation of the Earth’s inner core, coinciding with length of day and magnetic field variations, is experiencing a pause and reversing, according to analysis of repeating seismic waves traversing the inner core since the 1960s.


