Earth's core and the geodynamo

BA Buffett - Science, 2000 - science.org
Earth's magnetic field is generated by fluid motion in the liquid iron core. Details of how this
occurs are now emerging from numerical simulations that achieve a self-sustaining …

Heterogeneity and anisotropy of Earth's inner core

A Deuss - Annual Review of Earth and Planetary Sciences, 2014 - annualreviews.org
Seismic observations provide strong evidence that Earth's inner core is anisotropic, with
larger velocity in the polar than in the equatorial direction. The top 60–80 km of the inner …

[图书][B] Introduction to the Physics of the Earth's Interior

JP Poirier - 2000 - books.google.com
Enlarged and fully updated, this new edition takes into account the considerable
experimental and theoretical progress recently made in the field. Introduction to the Physics …

[图书][B] The magnetic field of the earth: paleomagnetism, the core, and the deep mantle

RT Merrill, MW McElhinny, PL McFadden - 1998 - books.google.com
Topics involved in studies of the Earth's magnetic field and its secular variation range from
the intricate observations of geomagnetism, to worldwide studies of archeomagnetism and …

[图书][B] Seismic anisotropy in the Earth

V Babuska, M Cara - 1991 - books.google.com
Structural geologists are well aware of the fact that isotropic rocks are quite exceptional in
nature. Whicheverorigin, sedimentary, metamorphicormagmatic, rocks are shaped with a …

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

X Song, PG Richards - Nature, 1996 - nature.com
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 …

Static compression of iron to 300 GPa and Fe0.8Ni0.2 alloy to 260 GPa: Implications for composition of the core

HK Mao, Y Wu, LC Chen, JF Shu… - Journal of Geophysical …, 1990 - Wiley Online Library
We report the results of X ray diffraction experiments with the diamond anvil cell to pressures
above 300 GPa at room temperature on pure iron and an iron‐nickel alloy. These data …

2.16 Seismic anisotropy of the deep Earth from a mineral and rock physics perspective

D Mainprice - Treatise on geophysics, 2010 - books.google.com
In this section the contribution of CPO to seismic anisotropy in the deep Earth with cases of
olivine and the role of melt is illustrated. The CPO in rocks of upper-mantle origin is now well …

Degree one heterogeneity and hemispherical variation of anisotropy in the inner core from PKP(BC)–PKP(DF) times

S Tanaka, H Hamaguchi - Journal of Geophysical Research …, 1997 - Wiley Online Library
We have investigated the relationship between heterogeneity and anisotropy in the inner
core. Heterogeneity was examined using PKP (DF) and PKP (BC) phases traveling in the …

Anisotropy of the inner core from differential travel times of the phases PKP and PKIKP

KC Creager - Nature, 1992 - nature.com
The difference between the travel times of com-pressional waves that turn in the Earth's
liquid outer core (PKP-BC) and those that run in the solid inner core (PKIKP-DF) is primarily …