Inner core structure: Constraints from frequency dependent seismic anisotropy

Comptes Rendus - Geoscience

Volumn 341, Issue 6, 2009, Pages 439-445

  Souriau, Annie ^a  

^a OBSERVATOIRE MIDI PYRÉNÉES   (France)

Author keywords

Anisotropy; Attenuation; Core; Dispersion; Inner core; PKP waves

Indexed keywords

FREQUENCY DEPENDENCE; INNER CORE; SEISMIC ANISOTROPY; SEISMIC ATTENUATION; SEISMIC WAVE; WAVE PROPAGATION;

EID: 67449106292     PISSN: 16310713     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.crte.2009.04.006     Document Type: Article

References (35)

1. Aubert J., Amit H., Hulot G., and Olson P. Thermochemical flows couple the Earth's inner core growth to mantle heterogeneity. Nature 454 (2008) 758-762
2. Barton N. Rock Quality, Seismic velocity, Attenuation and Anisotropy (2007), Taylor and Francis, London 729 p
3. Beghein C., and Trampert J. Robust normal mode constraints on inner core anisotropy from model space search. Science 299 (2003) 552-555
4. Bergman M.I. Measurements of elastic anisotropy due to solidification texturing and the implications for the Earth's inner core. Nature 389 (1997) 60-63
5. Bergman M.I., Giersch L., Hinczewski M., and Izzo V. Elastic and attenuation anisotropy in directionally solidified (hcp) zinc, and the seismic anisotropy in the Earth's inner core. Phys. Earth Planet. Inter. 117 (2000) 139-151
6. Bhattacharyya J., Shearer P., and Masters G. Inner core attenuation from short-period PKP(BC) versus PKP(DF) waveforms. Geophys. J. Int. 114 (1993) 1-11
7. Calvet M., and Margerin L. Constraints on grain size and stable iron phases in the uppermost inner core from multiple scattering modelling of seismic velocity and attenuation. Earth Planet. Sci. Lett. 267 (2008) 200-212
8. Cao A., and Romanowicz B. Hemispherical transition of seismic attenuation at the top of the earth's inner core. Earth Planet. Sci. Lett. 228 (2004) 243-253
9. Cormier V., and Richards P.G. Comments on "The damping of core waves" by Antony Qamar and Alfredo Eisenberg. J. Geophys. Res. 81 (1976) 3066-3068
10. Cormier V.F., Li X., and Choy G.L. Seismic attenuation in the inner core: Viscoelastic or stratigraphic?. Geophys. Res. Lett. 25 (1998) 4019-4022
11. Cormier V.F., and Li X. Frequency-dependent seismic attenuation in the inner core 2. A scattering and fabric interpretation. J. Geophys. Res. (2002) 107 10.1029/2002JB001796
12. Creager K.C. Large-scale variations in inner core anisotropy. J. Geophys. Res. 104 (1999) 23127-23139
13. Doornbos D.J. Observable effects of the seismic absorption band in the Earth. Geophys. J. Roy. Astr. Soc. 75 (1983) 693-711
14. Dziewonski A.M., and Anderson D.J. Preliminary reference Earth model. Phys. Earth Planet. Inter. 25 (1981) 297-356
15. Ishii M., and Dziewonski A.M. The innermost inner core of the Earth: Evidence for a change in anisotropic behaviour at the radius of about 300 km. PNSA 99 (2002) 14026-14030
16. Kennett B.L.N., Engdahl E.R., and Buland R. Constraints on seismic velocities in the Earth from traveltimes. Geophys. J. Int. 122 (1995) 108-124
17. Li X., and Cormier V.F. Frequency dependent seismic attenuation in the inner core 1. A viscoelastic interpretation. J. Geophys. Res. 107 (2002) 10.1029/2002JB001795
18. Liu H.P., Anderson D.L., and Kanamori H. Velocity dispersion due to anelasticity; implications for seismology and mantle composition. Geophys. J. R. Astron. Soc. 47 (1976) 41-58
19. Loper D.E., and Fearn D.R. A seismic model of partially molten inner core. J. Geophys. Res. 88 (1983) 1235-1242
20. Morelli A., Dziewonski A.M., and Woodhouse J.H. Anisotropy of the inner core inferred from PKIKP travel times. Geophys. Res. Lett. 13 (1986) 1545-1548
21. Müller G. Amplitude studies of core phases. J. Geophys. Res. 78 (1973) 3469-3490
22. Oreshin S.I., and Vinnik L.P. Heterogeneity and anisotropy of seismic attenuation in the inner core. Geophys. Res. Lett. 31 (2004) L02613 10.1029/1003GL018591
23. B. Romanowicz, J.J. Durek, Seismological constraints on attenuation in the Earth: a review, in: Karato et al. (Eds.), Earth's deep Interior: Mineral physics and tomography from the atomic to the global scale, AGU Geophysical Monograph 117 (2000) 161-180.
24. Singh S.C., Taylor M.A.J., and Montagner J.P. On the presence of liquid in Earth's inner core. Science 287 (2000) 2471-2474
25. Souriau A. Deep Earth Structure - The Earth's Cores. In: Schubert G. (Ed). Treatise on Geophysics (2007), Elsevier Ltd, Oxford 655-694
26. A. Souriau, The frequency dependent anisotropy in attenuation and the structure of the inner core, E.O.S. Trans. AGU (2008), 89 (53), Fall meeting supplement, Abstract DI43A-1756.
27. Souriau A., and Roudil P. Attenuation in the uppermost inner core from broadband Geoscope PKP data. Geophys. J. Int. 123 (1995) 572-587
28. Souriau A., and Romanowicz B. Anisotropy in inner core attenuation: a new type of data to constrain the nature of the solid core. Geophys. Res. Lett. 23 (1996) 1-4
29. Song X., and Helmberger D.V. Depth dependence of anisotropy of Earth's inner core. J. Geophys. Res. 100 (1995) 9805-9816
30. Sumita I., and Olson P. A laboratory model for convection in Earth's core driven by a thermally heterogeneous mantle. Science 286 (1999) 1547-1549
31. Stanke F.E., and Kino G.S. A unified theory for elastic wave propagation in polycrystalline materials. J. Acoust. Soc. Am. 75 (1984) 655-682
32. Tanaka S., and Hamaguchi H. Degree one heterogeneity and hemispherical variation of anisotropy in the inner core from PKP(BC)-PKP(DF) times. J. Geophys. Res. 102 (1997) 2925-2938
33. Vidale J.E., and Earle P.S. Fine-scale heterogeneity in the Earth's inner core. Nature 404 (2000) 273-275
34. Yu W., and Wen L. Inner core anisotropy in attenuation. Earth Planet. Sci. Lett. 245 (2006) 581-594
35. Yu W., and Wen L. Complex seismic anisotropy in the Earth's inner core beneath Africa. J. Geophys. Res. 112 (2007) B08304 10.1029/ 2006JB004868