Robust normal mode constraints on inner-core anisotropy from model space search

Science

Volumn 299, Issue 5606, 2003, Pages 552-555

  Beghein, Caroline ^a   Trampert, Jeannot ^a  

^a UTRECHT UNIVERSITY   (Netherlands)

Author keywords

[No Author keywords available]

Indexed keywords

IRON; RADIATION;

INNER-CORE ANISOTROPY;

ANISOTROPY;

IRON;

ANISOTROPY; INNER CORE; P-WAVE; S-WAVE; TRAVEL TIME;

ANISOTROPY; ARTICLE; MEASUREMENT; MODEL; PARAMETER; PRIORITY JOURNAL; SPACE; STRUCTURE ANALYSIS; TECHNIQUE; TRAVEL;

EID: 0037462589     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.1078159     Document Type: Article

References (40)

1. A. Morelli, A. Dziewonski, J. Woodhouse, Geophys. Res. Lett. 13, 1545 (1986).
2. J. Woodhouse, D. Giardini, X.-D. Li, Geophys. Res. Lett. 13, 1549 (1986).
3. J. Tromp, Nature 366, 678 (1993).
4. -, GSA Today 5, 137 (1995).
5. J. Durek, B. Romanowicz, Geophys. J. Int. 139, 599 (1999).
6. B. Romanowicz, L. Bréger, J. Geophys. Res. 105, 215S9 (2000).
7. K. Creager, Geophys. Monogr. Am. Geophys. Union 117 (American Geophysical Union, Washington, DC, 2000), pp. 89-114.
8. W.-J. Su, R. Woodward, A. Dziewonski, J. Geophys. Res. 100, 9831 (1995).
9. X. Song, J. Geophys. Res. 101, 16089 (1996).
10. X. Sun, X. Song, Earth Planet. Sci. Lett. 199, 429 (2002).
11. M. Ishii, A. Dziewonski, Proc. Natl. Acad. Sci. U.S.A. 99, 14026 (2002).
12. F. Birch, J. Geophys. Res. 69, 4377 (1964).
13. L Stixrude, E. Wasserman, R. Cohen, J. Geophys. Res. 102, 24729 (1997).
14. H. K. Mao et al. Science 292, 914 (2001).
15. J.-F. Lin, D. L. Heinz, A. J. Campbell, J. M. Devine, G. Shen, Science 295, 313 (2002).
16. C. Gessman, B. Wood, Earth Planet. Sci. Lett. 200, 63 (2002).
17. G. Steinle-Neumann, L Stixrude, R. Cohen, O. Gülseren, Nature 413, 57 (2001).
18. J. Tromp, Geophys. J. Int. 121, 963 (1995).
19. A. Love, A Treatise on the Mathematical Theory of Elasticity (Cambridge Univ. Press, Cambridge, 1927).
20. M. Matsu'ura, N. Hirata, J. Phys. Earth 30, 451 (1982).
21. Materials and methods are available as supporting material on Science Online.
22. M. Ritzwoller, G. Masters, F. Gilbert, J. Geophys. Res. 93, 6369 (1988).
23. R. Widmer, G. Masters, F. Gilbert, Geophys. J. Int. 111, 559 (1992).
24. J. Tromp, E. Zanzerkia, Geophys. Res. Lett. 22, 2297 (1995).
25. X. He, J. Tromp, J. Geophys. Res. 101, 20053 (1996).
26. J. Resovsky, M. Ritzwoller, J. Geophys. Res. 103, 783 (1998).
27. W. Mooney, G. Laske, G. Masters, J. Geophys. Res. 103, 727 (1998).
28. J. Resovsky, M. Ritzwoller, J. Geophys. Res. 104, 993 (1999).
29. -, J. Trampert, in preparation.
30. C. Beghein, J. Resovsky, J. Trampert, Geophys. J. Int. 149, 646 (2002).
31. G. Masters, S. Johnson, G. Laske, H. Bolton, Philos. Trans. R. Soc. London Ser. A 354, 1385 (1996).
32. J. Ritsema, H.-J. van Heijst, J. H. Woodhouse, Science 286, 1925 (1999).
33. X. Li, B. Romanovwicz, J. Geophys. Res. 101, 22245 (1996).
34. G. Masters, G. Laske, H. Bolton, A. Dziewonski, Geophys. Monogr. Am. Geophys. Union 117 (American Geophysical Union, Washington, DC, 2000), pp. 63-87.
35. W.-J. Su, R. Woodward, A. Dziewonski, J. Geophys. Res. 99, 6945 (1994).
36. G. Backus, F. Gilbert, Philos. Trans. R. Soc. London Ser. A 266, 123 (1970).
37. M. Sambridge, Geophys. J. Int. 138, 479 (1999).
38. -, Geophys. J. Int. 138, 727 (1999).
39. J. Resovsky, J. Trampert, Geophys. J. Int. 150, 665 (2002).
40. M. Sambridge generously provided the codes of the NA. We wish to thank K. C. Creager, who provided the PKP(BC)-PKP(DF) and PKP(AB)-PKP(DF) data and the code giving travel-time anomalies as a function of the ray angle; X. Song, who sent us the differential travel-time data for the epicentral distance range of 168° to 180°; H. Paulssen for the numerous discussions concerning body waves and for computing the reference travel times for P waves inside the inner core; J. Resovsky for advice on the normal mode data; M. Ishii for a discussion concerning her inner-core work; and all the people who made their normal mode measurements and mantle models available in various publications.