Seismological evidence for differential rotation of the Earth's inner core

Details Seismological evidence for differential rotation of the Earth's inner core Seismological evidence for differential rotation of the Earth's inner core

Jul 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996natur.382..221s&link_type=abstract

Nature, Volume 382, Issue 6588, pp. 221-224 (1996).

Physics

161

Scientific paper

The travel times of seismic waves that traverse the Earth's inner core show a small but systematic variation over the past three decades. This variation is best explained by a rotation of the inner core that moves the symmetry axis of its known seismic anisotropy. The inferred rotation rate is on the order of 1° per year faster than the daily rotation of the mantle and crust.

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