Seismic anisotropy of the Earth's inner core resulting from flow induced by Maxwell stresses

Nature

Volumn 402, Issue 6764, 1999, Pages 871-873

  Karato, Shun Ichiro ^a  

^a UNIVERSITY OF MINNESOTA   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CORE (PLANETARY); INNER CORE; SEISMIC ANISOTROPY;

ANISOTROPY; ARTICLE; DYNAMICS; GEOLOGY; GEOMETRY; GRAVITY; MAGNETIC FIELD; PHYSICS; PRIORITY JOURNAL; STRESS; THERMODYNAMICS;

EID: 0033598952     PISSN: 00280836     EISSN: None     Source Type: Journal    
DOI: 10.1038/47235     Document Type: Article

References (28)

1. Song, X. D. Anisotropy of the Earth's inner core. Rev. Geophys. 35, 297-313 (1997).
2. Stixrude, L. & Cohen, R. E. High-pressure elasticity of iron and anisotropy of Earth's inner core. Science 267, 1972-1975 (1995).
3. Singh, A. K., Mao, H-K., Shu, J. & Hemley, R. J. Estimation of single-crystal moduli from X-ray diffraction at high pressure application to FeO and iron. Phys. Rev. Lett. 80, 2157-2160 (1998).
4. Poirier, J-P. & Price, G. D. Primary slip system of e-iron and anisotropy of the Earth's inner core. Phys. Planet. Inter. 110, 147-156 (1999).
5. Jeanloz, R. & Wenk, H-R. Convection and anisotropy of the inner core. Geophys. Res. Lett. 15, 72-75 (1988).
6. Karato, S. Inner core anisotropy due to magnetic field-induced preferred orientation of iron. Science 262, 1708-1711 (1993).
7. Bergman, M. I. Measurements of elastic anisotropy due to solidification texturing and the implications for the Earth's inner core. Nature 389, 60-63 (1997).
8. Buffett, B. A. & Creager, K. C. Rotation and deformation of the inner core. Eos 79, S218-S219 (1998).
9. Yoshida, S., Surnita, I. & Kumazawa, M. Growth model of the inner core coupled with outer core dynamics and the resultant elastic anisotropy. J. Geophys. Res. 101, 28085-28103 (1996).
10. Song, X. D. & Richards, P. G. Seismological evidence for the rotation of the Earth's inner core. Nature 382, 221-224 (1996).
11. Su, W. J., Dziewonski, A. M. & Jeanloz, R. Planet within a planet: rotation of the inner core of Earth. Science 274, 1883-1887 (1996).
12. Glatzmaier, G. A. & Roberts, P. H. Rotation and magnetism of the Earth's inner core. Science 274, 1887-1891 (1996).
13. Aurnou, J., Brito, D. & Olson, P. Anomalous rotation of the inner core and the toroidal magnetic field. J. Geophys. Res. 103, 9721-9738 (1998).
14. Sumita, I., Yoshida, S., Kumazawa, M. & Hamano, Y. A model for sedimentary compaction of a viscous medium and its application to inner-core growth. Geophys. J. Int. 124, 502-524 (1996).
15. Baumgardner, J. R., Tome, C. N., Lebensohn, R. & Wenk, H-R. Inner core anisotropy: texture as an alternative to a single crystal. Eos 78, F458 (1997).
16. Yukutake, T. Implausibility of thermal convection in the Earth's solid inner core. Phys. Earth Planet. Inter. 108, 1-13 (1998).
17. Buffett, B. A. in Mineral Physics and Seismic Tomography (eds Karato, S. et al.) (American Geophysical Union, Washington DC, in the press).
18. Frost, H. J. & Ashby, M. F. Deformation Mechanism Maps (Pergamon, Oxford, 1982).
19. Buffett, B. A. Geodynamic estimates of the viscosity of the Earth's inner core. Nature 388, 571-573 (1997).
20. Chandrasekhar, S. Hydrodynamic and Hydromagnetic Stability (Oxford Univ. Press, 1961).
21. Glatzmaier, G. A. & Roberts, P. H. A three-dimensional convective dynamo solution with rotating and finally conducting inner core and mantle. Phys. Earth Planet. Inter. 91, 63-75 (1995).
22. Kageyama, A. & Sato, T. Generation mechanism of a dipole field by a magnetohydrodynamic dynamo. Phys. Rev. E 55, 4617-4626 (1997).
23. Merrill, R. T., McElhinney, M. W. & McFaddon, P. L. The Magnetic Field of the Earth (Academic, San Diego, 1998).
24. Olson, P. & Glatzmaier, G. A. Magnetoconvection in a rotating spherical shell: structure of flow in the outer core. Phys. Earth Planet. Inter. 92, 109-118 (1995).
25. Olson, P., Christensen, U. & Glatzmaier, G. A. Numerical modeling of the geodynamo: Mechanisms of field generation and equilibration. J. Geophys. Res. 104, 10383-10404 (1999).
26. Yoo, C. S., Akella, J., Campbell, A. J., Mao, H.-K. & Hemley, R. J. Phase diagram of iron by in-situ X-ray diffraction: implications for Earth's core. Science 270, 1473-1475 (1995).
27. Olson, P. & Glatzmaier, G. A. Magnetoconvection and thermal coupling of the Earth's core and mantle. Phil. Trans. R. Soc. Lond. A 354, 1413-1424 (1996).
28. Song, X. & Helmberger, D. V. Seismic evidence for an inner core transition zone. Science 282, 924-927 (1998).