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

被引：338

作者：

Song, XD ^{[1
]}

Richards, PG ^{[1
]}

机构：

[1] COLUMBIA UNIV,DEPT EARTH & ENVIRONM SCI,NEW YORK,NY 10027

来源：

NATURE | 1996年 / 382卷 / 6588期

关键词：

D O I：

10.1038/382221a0

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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 degrees per year faster than the daily rotation of the mantle and crust.

引用

页码：221 / 224

页数：4

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