地球科学:深部的铸造厂

A deep Foundry

下载PDF

导出

摘要地核中铁合金的熔化和固化也许能解释固态内核的构造复杂性,且改变我们对深部动力学的认识（见快报P361）。教科书将地球描述为洋葱式的层状结构,中心有个固态的铁球。中心的部分称为内核,被认为是由外围的液态外核逐步冷却、固化形成的[1]。在本期的第361页,

作者 Bruce Buffett 赵爱华

机构地区中国地震局地球物理研究所

出处《国际地震动态》 2012年第7期3-4,共2页 Recent Developments in World Seismology

关键词深部动力学地球科学铸造厂层状结构复杂性铁合金教科书内核

参考文献11

1Jacobs J A. The Earth's inner core. Nature, 1953, 172: 297-298.
2Gubbins D, Sreenivasan B, Mound J, et al. Melting of the Earth's inner core. Nature, 2011, 473: 361- 363.
3Sreenivasan B, Jones C A. The role of inertia in the evolution of spherical dynamos. Geophys. J. Int., 2006, 164:467-476.
4Olson P, Christensen U R. The time averaged magnetic field in numerical dynamos with nonuniform boundary heat flow. Geophys. J. Int., 2002, 151:809-823.
5Alfe D, Gillan M J, Price G D. Temperature and composition of the Earth's core. Contemp. Phys., 2007, 48:63-80.
6Souriau A, Poupinet G. The velocity profile at the base of the liquid core from PKP(BC+Cdiff) data: An argument in favour of radial inhomogeneity. Geophys. Res. I.ett., 1991, 18:2023-2026.
7Sun X, Song X. The inner core of the Earth: texturing of iron crystals from three-dimensional seismic anisotropy. Earth Planet. Sci. Lett., 2008, 269: 56-65.
8Gillan M J, AIfe D, Brodhoh J, et al. First-principles modelling of Earth and planetary materials at high pressures and temperatures. Rep. Prog. Phys., 2006, 69:2365-2441.
9Fearn D R, Loper D E, Roberts P H. Structure of the Earth's inner core. Nature, 1981, 292:232-233.
10Monnereau M, Calvet M, Margerin L, et al. Lopsided growth of Earthts inner core. Science, 2010, 328:1014-1017.

国际地震动态

2012年第7期

内容加载中请稍等...