Anisotropy in inner core attenuation: A new type of data to constrain the nature of the solid core

Geophysical Research Letters

Volumn 23, Issue 1, 1996, Pages 1-4

  Souriau, Annie ^a   Romanowicz, Barbara ^b  

^a OBSERVATOIRE MIDI PYRÉNÉES   (France)

^b UNIVERSITY OF CALIFORNIA   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ANISOTROPY; ATTENUATION; CORE (INNER); SEISMIC WAVE;

ANISOTROPY;

AMPLITUDE RATIOS; EARTH ROTATION; EARTH'S ROTATION; EPICENTRAL DISTANCES; LIQUID CORES; NEGATIVE CORRELATION; ORIENTED CRYSTALS; VELOCITY ANISOTROPY;

CORE SAMPLES;

EID: 0029730094     PISSN: 00948276     EISSN: None     Source Type: Journal    
DOI: 10.1029/95GL03583     Document Type: Article

References (31)

1. Bhattacharyya, J., P. Shearer, and G. Masters, Inner core attenuation from short-period PKP(BC) PKP(DF) waveforms, Geophys. J. Int., 114, 1-11, 1993.
2. Carcione, J.M., and F. Cavallini, A rheological model for anelastic anisotropic media with applications to seismic wave propagation, Geophys. J. Int., 119, 338-348, 1994.
3. Cormier, V.F., and G.L. Choy, A search for lateral heterogencity in the inner core from defferential travel times near PKP-D and PKP-C, Geophys. Res. Lett., 13, 1553-1556, 1986.
4. Cormier, V.F., Inner core structure inferred from body waveforms, EOS Trans. Am. Geophys. Un., 75, 67, 1994.
5. Creager, K.C., Anisotropy of the inner core from differential travel times of the phases PKP and PKIKP, Nature, 356, 309-314, 1992.
6. Doornbos, D.J., The anelasticity of the inner core, Geophys. J.R. Astron. Soc., 38, 397-415, 1974.
7. Dziewonski, A.M., and D.L. Anderson, Preliminary Reference Earth model, Phys. Earth Planet. Inter., 25, 297-356, 1981.
8. Fearn, D.R. D.E. Loper, and P.H. Roberts, Structure of the Earth's inner core, Nature, 292, 232-233, 1981.
9. Hosten, B., M. Deschamps, and B.R. Tittmann, Inhomogeneous wave generation and propagation in lossy anisotropic solids. Application to characterization of viscoelastic compostie materials, J. Acoust. Soc. Am., 82, 1763-1771, 1987.
10. Jeanloz, R., and H.R. Wenk, Convection and anisotropy of the inner core, Geophys. Res.Lett., 15, 72-75, 1988.
11. Karato, S., Inner core anisotropy due to the magnetic field-induced preferred orientation of iron, Science, 262, 1708-1711, 1993.
12. Morelli, A., A.M. Dziewonski, and J.H. Woodhouse, 1986, Anisotropy of the inner core inferred from PKIKP travel times, Geophys. Res. Lett., 13, 1545-1548, 1986.
13. Niazi, M., and L.R. Johnson, Q in the inner core, Phys. Earth Planet. Inter., 74, 55-62, 1992.
14. Peacock, S., and J.A. Hudson, Seismic properties of rocks with distributions of small cracks, Geophys. J. Int., 102, 471-484, 1990.
15. Poirier, J.P., Physical properties of the Earth's core, C.R. Acad. Sci. Paris, 318-II, 341-350, 1994.
16. Roudil, P., and A. Souriau, Liquid core structure and PKP station anomalies derived from PKP(BC) propagation times, Phys. Earth Planet. Inter., 77, 225-236, 1993.
17. Samec, P., and J.P. Blangy, Viscoelastic attenuation, anisotropy, and AVO, Geophysics, 57, 441-450, 1992.
18. Schmeling, H., Numerical models on the influence of partial melt on elastic, anelastic and electric properties of rocks. Part I: elasticity and anelasticity, Phys. Earth Planet. Inter., 41, 34-57, 1985.
19. Shearer, P.M., Constraints on inner core anisotropy from PKP(DF) travel limes, J. Geophys. Res., 99, 19,647-19,659, 1994.
20. Shearer, P.M., K.M. Toy, and J.A. Orcutt, Axi-symmetric Earth models and inner core anisotropy, Nature, 333, 228-232, 1988.
21. Shearer, P.M., and K.M. Toy, PKP(BC) versus PKP(DF) differential traval times and aspherical structure in the Earth's inner core, J. Geophys. Res., 96, 2233-2247, 1991.
22. Song, X., and D.V. Helmberger, Anisotropy of the Earth's innner core, Geophys. Res., Lett., 20, 285-288, 1993.
23. Souriau, A., and P. Roudil, Attenuation in the uppermost inner core from broadband Geoscope PKP data, Geophys. J. Int., 123, 572-587, 1995.
24. Stacey, F.D., Physics of the Earth (Third edition), Brookfield Press, Brisbane, 513 pp, 1992.
25. Su, W., and A.M. Dziewonski, Inner core anisotropy in three demensions, J. Geophys. Res., 100, 9831-9852, 1995.
26. Stevenson, D.J., Limits on lateral density and velocity variations in the Earth's outer core, Geophys. J. Roy. Astron. Soc., 88, 311-319, 1987.
27. Stixrude, L., and R.E. Cohen, High pressure elasticity of iron and anisotropy of Earth's Inner Core, Science, 267, 1972-1975, 1995.
28. Tromp. J., Support for anisotropy of the Earth's inner core from free oscillations, Nature, 366, 678-681, 1993.
29. Vinnik, L., B. Romanowicz, and L. Breger, Anisotropy in the center of the Earth, Geophys. Res., Lett., 21, 1671-1674, 1994.
30. Weber, P., and P. Machetel, Convection within the inner-core and thermal implications, Geophys. Res. Lett., 19, 2107-2110, 1992.
31. Woodhouse, J.H., D. Giardini, and X.-D. Li, Evidence for inner core anisotropy from free oscillations, Geophys. Res. Lett., 13, 1549-1552, 1986.