Growth model of the inner core coupled with the outer core dynamics and the resulting elastic anisotropy

Journal of Geophysical Research: Solid Earth

Volumn 101, Issue 12, 1996, Pages 28085-28103

  Yoshida, Shigeo ^a   Sumita, Ikuro ^a   Kumazawa, Mineo ^b  

^a UNIVERSITY OF TOKYO   (Japan)

^b NAGOYA UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

ANISOTROPY; CORE (INNER); GROWTH MODEL;

EID: 0030436971     PISSN: 21699313     EISSN: 21699356     Source Type: Journal    
DOI: 10.1029/96jb02700     Document Type: Article

References (66)

1. Bhattacharyya, J., P. Shearer, and G. Masters, Inner core attenuation from short-period PKP(BC) verses PKP(DF) waveforms, Geophys. J. Int., 114, 1-11, 1993.
2. Bloxham, J., Simple models of fluid flow at the core surface derived from geomagnetic field models, Geophys. J. Int., 99, 173-182, 1989.
3. Boehler, R., The phase diagram of iron to 2 Mbar: New static measurements, in High-Pressure Science and Technology - 1993, edited by S. C. Schmidt et al., pp. 919-922, Am. Inst. of Phys. Press, New York, 1994.
4. Busse, F. H., Thermal instabilities in rapidly rotaing systems, J. Fluid Mech., 44, 441-460, 1970.
5. Cardin, P., and P. Olson, Chaotic thermal convection in a rapidly rotating spherical shell: Consequences for flow in the outer core, Phys. Earth Planet. Inter., 82, 235-259, 1994.
6. Chandrasekhar, S., Hydrodynamic and Hydromagnetic Stability, 652 pp., Dover, New York, 1981.
7. Choy, G. L., and V. F. Cormier, The structure of the inner core inferred from short-period and broadband GDSN data, Geophys. J. R. Astron. Soc., 72, 1-21, 1983.
8. Cormier, V. F., Short-period PKP phases and anelasticity mechanism of the inner core, Phys. Earth Planet. Inter., 24, 291-301, 1981.
9. Creager, K. C., Anisotropy of the inner core from differential travel times of phases PKP and PKIKP, Nature, 356, 309-314, 1992.
10. Doornbos, D. J., The anelasticity of the inner core, Geophys. J. R. Astron. Soc., 38, 397-415, 1974.
11. Doornbos, D. J., Observable effects of a seismic absorption band in the Earth, Geophys. J. R. Astron. Soc., 75, 693-711, 1983.
12. Dziewonski, A. M., and D. L. Anderson, Preliminary reference Earth model, Phys. Earth Planet. Inter., 25, 297-356, 1981.
13. Fearn, D. R., D. E. Loper, and P. H. Roberts, Structure of the Earth's inner core, Nature, 292, 232-233, 1981.
14. Frost, H. H., and M. F. Ashby, Deformation Mechanism Maps, 166 pp., Pergamon, Tarrytown, New York, 1982.
15. Fujimura, A., Preferred orientation of silicate spinel inferred from experimentally deformed aggregates of trevorite, J. Phys. Earth, 32, 273-297, 1984.
16. Fukao, Y., and N. Suda, Core modes of the Earth's free oscillations and structure of the inner core, Geophys. Res. Lett., 16, 401-404, 1989.
17. Giardini D., X. Li, and J. H. Woodhouse, Three dimensional structure of the Earth from splitting in free oscillation spectra, Nature, 325, 405-411, 1987.
18. Gibbs, J. W., On the equilibrium of heterogeneous substances, Trans. Conn. Acad. Arts Sci., 3, 108-248, 344-520, 1875-1878.
19. Gubbins, D., and J. Bloxham, Morphology of the geomagnetic field and implications for the geodynamo, Nature, 325, 509-511, 1987.
20. Gubbins, D., T. G. Masters, and J. A. Jacobs, Thermal evolution of the Earth's core, Geophys. J. R. Astron. Soc., 59, 57-99, 1979.
21. Imanishi, Y., T. Sato, M. Kumazawa, M. Ooe, and Y. Tamura, Observation of seisimic core modes from a superconducting gravimeter record, Phys. Earth Planet. Inter., 72, 249-263, 1992.
22. Jacobs, J. A., The Earth's inner core, Nature, 172, 297-298, 1953.
23. Jeanloz, R., The nature of the Earth's core, Annu. Rev. Earth Planet. Sci., 18, 357-386, 1990.
24. Jeanloz, R., and H. R. Wenk, Convection and anisotropy of the inner core, Geophys. Res. Lett., 15, 72-75, 1988.
25. Kamb, W. B., Theory of preferred crystal orientation developed by crystallization under stress, J. Geol., 67, 153-170, 1959.
26. Kamb, W. B., The thermodynamic theory of nonhydrostatically stressed solids, J. Geophys. Res., , 66, 259-271, 1961.
27. Karato, S., The role of recrystallization in the preferred orientation of olivine, Phys. Earth Planet. Inter., 51, 107-122, 1988.
28. Karato, S., Inner core anisotropy due to the magnetic field-induced preferred orientation of iron, Science, 262, 1708-1711, 1993.
29. Loper, D. E., and P. H. Roberts, A study of conditions at the inner core boundary of the Earth, Phys. Earth Planet. Inter., 24, 302-307, 1981.
30. Masters, G., and F. Gilbert, Structure of the inner core inferred from observations of its spheroidal shear modes, Geophys. Res. Lett., 8, 569-571, 1981.
31. Morelli, A., A. M. Dziewonski, and J. H. Woodhouse, Anisotropy of the inner core inferred from PKIKP travel times, Geophys. Res. Lett., 13, 1545-1548, 1986.
32. Niazi, M., and L. R. Johnson, Q in the inner core, Phys. Earth Planet. Inter., 74, 55-62, 1992.
33. Poirier, J.-P., Creep of Crystals, 260 pp., Cambridge Univ. Press, New York, 1985.
34. Saxena, S. K., G. Shen, and P. Lazor, Experimental evidence for a new iron phase and Implications for the Earth's core, Science, 260, 1312-1314, 1993.
35. Saxena, S. K., L. S. Dubrovinsky, P. Haggkvist, Y. Cerenius, G. Shen, and H. K. Mao, Synchrotron X-ray study of iron at high pressure and temperature, implications for the Earth's core, Science, 269, 1703-1704, 1995.
36. Sayers C. M., Seismic anisotropy of the inner core, Geophys. Res. Lett., 16, 267-270, 1989.
37. Sayers, C. M., The crystal structure of iron in the Earth's inner core, Geophys. J. Int., 103, 285-286, 1990.
38. Schubert, G., D. A. Yuen, and D. L. Turcotte, Role of phase transitions in a dynamic mantle, Geophys. J. R. Astron. Soc., 42, 705-735, 1975.
39. Shearer, P. M., Constraints in inner core anisotropy from PKP(DF) travel times, J. Geophys. Res., 99, 19,647-19,659, 1994.
40. Sherman, D. M., Stability and elastic properties of Fe-S, Fe-O, Fe-C and Fe-Si alloy phases under the conditions of the Earth's core (abstract), Eos Trans. AGU, 77(22), West. Pac. Geophys. Meet. Suppl., W132, 1996.
41. Smylie, D. E., A. M. K. Szeto, and M. G. Rochester, The dynamics of the Earth's inner and outer cores, Rep. Prog. Phys., 47, 855-906, 1984.
42. Song, X., Anisotropy in central part of inner core, J. Geophys. Res., 101, 16,089-16,097, 1996.
43. Song, X., and D. V. Helmberger, Anisotropy of Earth's inner core, Geophys. Res. Lett., 20, 2591-2594, 1993.
44. Song, X., and D. V. Helmberger, Depth dependence of anisotropy of Earth's inner core, J. Geophys. Res., 100, 9805-9816, 1995.
45. Stacey, F. D., Physics of the Earth, 3rd ed., 513 pp., Brookfield, Brisbane, Queensland, Australia, 1992.
46. Stacey, F. D., Theory of thermal and elastic properties of the lower mantle and core, Phys. Earth Planet. Inter., 89, 219-245, 1995.
47. Stixrude, L., and R. E. Cohen, Constraints on the crystalline structure of the inner core: Mechanical instability of BCC iron at high pressure, Geophys. Res. Lett., 22, 125-128, 1995a.
48. Stixrude, L., and R. E. Cohen, High-pressure elasticity of iron and anisotropy of Earth's inner core, Science 267, 1972-1975, 1995b.
49. Su, W., and A. M. Dziewonski, Inner core anisotropy in three dimensions, J. Geophys. Res., 100, 9831-9852, 1995.
50. Suda, N., and Y. Fukao, Structure of the inner core inferred from seismic core modes, Geophys. J. Int., 103, 403-413, 1990a.
51. μ in the inner core, J. Phys. Earth, 38, 391-397, 1990b.
52. Sumita, I., S. Yoshida, Y. Hamano, and M. Kumazawa, A model for the structural evolution of the Earth's core and its relation to the observations, in The Earth's Central Part: Its Structure and Dynamics, edited by T. Yukutake, pp. 231-261, Terra Sci., Tokyo, 1995.
53. Sumita, I., S. Yoshida, M. Kumazawa, and 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.
54. Szeto, A. M. K., Inner core motions: Implications on Earth rotation, in Dynamics of Earth's Deep Interior and Earth Rotation, Geophys. Monogr. Ser., vol. 72, edited by J.-L. Le Mouël, D. E. Smylie, and T. Herring, pp. 31-33, AGU, Washington D. C., 1993.
55. Tromp, J., Support for anisotropy of the Earth's inner core from free oscillations, Nature, 366, 678-681, 1993.
56. Tromp, J., Seismology of the core, U. S. Natl. Kept. Int. Union Geod. Geophys. 1991-1994 Rev. Geophys. 33, 329-333, 1995a.
57. Tromp, J., Normal-mode splitting observations from the great 1994 Bolivia and Kuril islands earthquakes: Constraints on the structure of the mantle and the inner core, GSA Today, 5, 137-152, 1995b.
58. Turcotte, D. L., and G. Schubert, Geodynamics: Applications of Continuum Physics to Geological Problems, 450 pp., John Wiley, New York, 1982.
59. Vinnik, L., B. Romanowicz, and L. Breger, Anisotropy in the center of the inner core, Geophys. Res. Lett., 21, 1671-1674, 1994.
60. Weber, P., and P. Machetel, Convection within the inner-core and thermal implications, Geophys. Res. Lett., 19, 2107-2110, 1992.
61. Wenk, H. R., T. Takeshita, R. Jeanloz, and G. C. Johnson, Development of texture and elastic anisotropy during defomation of hcp metals, Geophys. Res. Lett., 15, 76-79, 1988.
62. Widmer, R., G. Masters, and F. Gilbert, Spherically symmetric attenuation within the Earth from normal mode data, Geophys. J. Int., 104, 541-553, 1991.
63. Woodhouse, J. H., D. Giardini, and X.-D. Li, Evidence for inner core anisotropy from splitting in free oscillation spectra, Geophys. Res. Lett., 13, 1545-1548, 1986.
64. Yamazaki, D., T. Kato, and E. Ohtani, Preferred orientation of olivine in stress field under ultra-high pressures (in Japanese), J. Seismol. Soc. Jpn., 49, 39-53, 1996.
65. Yoshida, S., and Y. Hamano, Fluid motion of the outer core in response to a temperature heterogeneity at the core-mantle boundary and its dynamo action, J. Geomagn. Geoelectr., 45, 1497-1516, 1993.
66. Zhang, K., Convection in a rapidly rotating spherical shell at infinite Prandtl number: Steadily drifting rolls, Phys. Earth Planet. Inter., 68, 156-169, 1991.