Estimates of the Earth's inner core grain size

Geophysical Research Letters

Volumn 25, Issue 10, 1998, Pages 1593-1596

  Bergman, Michael I ^a,b  

^a Simons Rock College   (United States)

^b HARVARD UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ANISOTROPY; DYNAMIC RECRYSTALLIZATION; GRAIN BOUNDARIES; GRAIN SIZE AND SHAPE; SEISMOLOGY; ELASTICITY; IRON; METEORITES; SINGLE CRYSTALS; SOLIDIFICATION; TITANIUM; ZIRCONIUM;

BODY-CENTERED CUBIC; CORE SOLIDIFICATION; DEFORMATION RESULT; EARTH'S INNER CORES; ELASTIC ANISOTROPY; EQUI-AXED GRAINS; SEISMIC ATTENUATION; TITANIUM AND ZIRCONIUMS;

SINGLE CRYSTALS; TECTONICS;

EARTH'S INNER CORE GRAIN SIZE;

GRAIN SIZE; INNER CORE; SEISMIC ATTENUATION;

EID: 0032523584     PISSN: 00948276     EISSN: 19448007     Source Type: Journal    
DOI: 10.1029/98GL01239     Document Type: Article

References (38)

1. 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
2. Bergman, M. I., D. R. Fearn, J. Bloxham, M. Shannon, Convection and channel formation in solidifying Pb-Sn alloys, Metall. Trans., 28A, 859-866, 1997
3. Bergman, M. I., M. Hincziewski, L. Giersch, V. Izzo, Elastic and attenuation anisotropy in directionally solidified metals (abstract, Eos Trans. AGU, 1998
4. Bhattacharyya, J., P. Shearer, G. Masters, Inner core attenuation from short-period PKP(BC) versus PKP(DF) waveforms, Geophys. J. Int., 114, 1-11, 1993
5. Brown, J. M., R. G. McQueen, Phase transitions, Gruneisen parameter, and elasticity for shocked iron between 77 GPa and 400 GPa, J. Geophys. Res., 91, 7485-7494, 1986
6. Buchwald, V. F., Handbook of Iron Meteorites, University of California, Berkeley, 1975
7. Buffett, B. A., A mechanism for decade fluctuations in the length of day, Geophys. Res. Lett., 23, 3803-3806, 1996
8. Buffett, B. A., Geodynamic estimates of the viscosity of the Earth's inner core, Nature, 388, 571-573, 1997
9. Cormier, V. F., L. Xu, G. Choy, The seismic attenuation of the inner core: viscoelastic or stratigraphic? (abstract), Eos Trans. AGU, 78, 466, 1997
10. Creager, K. C., Anisotropy of the inner core from differential travel times of the phases PKP and PKIKP, Nature, 356, 309-314, 1992
11. Creager, K. C., Inner core rotation rate from small-scale heterogeneity and time-varying travel times, Science, 278, 1284-1288, 1997
12. Dziewonski, A. M., D. L. Anderson, Preliminary reference Earth model, Phys. Earth. Planet. Inter., 25, 297-356, 1981
13. Fisher, E. S., C. J. Renken, Single crystal elastic moduli and the hcp-bcc transformation in Ti, Zr, and Hf, Phys. Rev., 135, A482-A494, 1964
14. Frost, H. J., M. F. Ashby, Deformation Mechanism Maps, Pergamon Press, Oxford, 1982
15. Glatzmaier, G., P. H. Roberts, Rotation and magnetism of Earth's inner core, Science, 274, 1887-1891, 1996
16. Humpheys, F. J., M. Hatherly, Recrystallization, Elsevier, Oxford, 1996
17. Jeanloz, R., H. R. Wenk, Convection and anisotropy of the inner core, Geophys. Res. Lett., 15, 72-75, 1988
18. Kurz, W., D. J. Fisher, Fundamentals of Solidification, Trans Tech Pub., Switzerland, 1989
19. Loper, D. E., D. R. Fearn, A seismic model of a partially molten inner core, J. Geophys. Res., 88, 1235-1242, 1983
20. Mao, H. K., Y. Wu, L. C. Chen, J. F. Shu, A. P. Jephcoat, Static compression of iron to 300 Gpa and Fe0.8Ni0.8 alloy to 260 Gpa: implications for composition of the core, J. Geophys. Res., 95, 21737-21742, 1990
21. Morelli, A., A. M. Dziewonski, J. H. Woodhouse, Anisotropy of the inner core inferred from PKIKP travel times, Geophys. Res. Lett., 13, 1545-1548, 1986
22. O'Doherty, R. F., N. A. Anstey, Reflections on amplitudes, Geophys. Prospecting, 19, 430-458, 1971
23. Poirier, J. P., Creep of Crystals, Cambridge University Press, Cambridge, 1985
24. Ross, M., D. A. Young, R. Grover, Theory of the iron phase diagram at Earth core conditions, J. Geophys. Res., 95, 21713-21716, 1990
25. Song, X., Anisotropy in central part of inner core, J. Geophys. Res., 101, 16089-16097, 1996
26. Song, X., P. Richards, Seismological evidence for the rotation of the Earth's inner core, Nature, 382, 221-224, 1996
27. Souriau, A., B. Romanowicz, Anisotropy in inner core attenuation: a new type of data to constrain the nature of the solid core, Geophys. Res. Lett., 23, 1-4, 1996
28. Souriau, A., B. Romanowicz, B. Moynot, Inner core differential rotation: facts and artefacts, Geophys. Res. Lett., 24, 2103-2106, 1997
29. Stixrude, L., R. E. Cohen, D. J. Singh, Iron at high pressure: linearized augmented plane wave computations in the generalized gradient approximation, Phys. Rev. B, 50, 6442-6445, 1994
30. Stixrude, L., R. E. Cohen, High-pressure elasticity of iron and anisotropy of Earth's inner core, Science, 267, 1972-1975, 1995
31. Su, W., A. M. Dziewonski, Inner core anisotropy in three dimensions, J. Geophys. Res., 100, 9831-9852, 1995
32. Su, W., A. M. Dziewonski, R. Jeanloz, Planet within a planet: rotation of the inner core of the Earth, Science, 274, 1883-1887, 1996
33. Sumita, I., S. Yoshida, M. Kumazawa, Y. Hamano, A model for sedimentary compaction of a viscous medium and its application to inner core growth, Geophys. J. Int., 124, 502-524, 1996
34. Tanaka, S., H. Hamaguchi, Degree one heterogeneity and hemispherical variation of anisotropy in the inner core from PKP(BC)- PKP(DF) times, J. Geophys. Res., 102, 2925-2938, 1997
35. Widmer, R., G. Masters, F. Gilbert, Spherically symmetric attenuation within the Earth from normal mode data, Geophys. J. Int., 104, 541-553, 1991
36. Woodhouse, J. H., D. Giardini, X.-D. Li, Evidence for inner core anisotropy from free oscillations, Geophys. Res. Lett., 13, 1549-1552, 1986
37. Yoo, C. S., J. Akella, A. J. Campbell, H. K. Mao, R. J. Hemley, Phase diagram of iron by in situ X-ray diffraction: implications for Earth's core, Science, 270, 1473-1475, 1995
38. Yoshida, S., I. Sumita, M. Kumazawa, Growth model of the inner core coupled with the outer core dynamics and the resulting elastic anisotropy, J. Geophys. Res., 101, 28085-28103, 1996