Nature Geoscience: A new twist on inner-core spin

We reconciled the existence of hemispherical variations in inner core structure, with the idea that the inner core is super rotating faster than the rest of the Earth. We found that the boundaries between the two hemispheres shift east wards with depth, with agrees with an extremely slow inner core super rotation of around 0.1 degree per million year.

This work was published in Nature Geoscience online on 20 February 2011, and in April 2011 in the printed version, ‘Reconciling the hemispherical structure of Earth’s inner core with its super-rotation’ by Lauren Waszek, Jessica Irving and Arwen Deuss. Read here.

The paper was accompanied by a News and Views article by Mathieu Dumberry. (Dumberry, M (2011) “Earth’s core: A new twist on inner-core spin” Nature Geoscience 4, 216–217)