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

Xiaodong Song, Paul G. Richards

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish (US)
Pages (from-to)221-224
Number of pages4
JournalNature
Volume382
Issue number6588
DOIs
StatePublished - Jul 18 1996
Externally publishedYes

ASJC Scopus subject areas

  • General

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