Velocity structure of the upper mantle discontinuities beneath North America from waveform inversion of broadband seismic data using a genetic algorithm

Journal of Geophysical Research: Solid Earth

Volumn 106, Issue B10, 2001, Pages 21883-21895

  Neves, F A ^a   Singh, S C ^a,b   Priestley, Keith ^a  

^a UNIVERSITY OF CAMBRIDGE   (United Kingdom)

^b INSTITUT DE PHYSIQUE DU GLOBE DE PARIS   (France)

Author keywords

[No Author keywords available]

Indexed keywords

DISCONTINUITY; SEISMIC DATA; UPPER MANTLE; VELOCITY STRUCTURE; WAVEFORM ANALYSIS;

UNITED STATES;

EID: 0035174691     PISSN: 21699313     EISSN: 21699356     Source Type: Journal    
DOI: 10.1029/2001jb000198     Document Type: Article

References (32)

1. 3 perovskite and negative pressure-temperature slopes for perovskite forming reactions, Geophys. Res. Lett., 20, 1839-1842, 1993.
2. 4: Calorimetric measurements, thermochemical calculation, and geophysical application, J. Geophys. Res., 94, 15,671-15,685, 1989.
3. Basu, A., and L. N. Frazer, Rapid determination of the critical temperature in simulated annealing inversion, Science, 249, 1409-1412, 1990.
4. Benz, H. M., and J. E. Vidale, Sharpness of upper mantle discontinuities determined from high-frequency reflections, Nature, 365, 147-150, 1993.
5. Bina, C. R., and B. J. Wood, Olivine-spinel transitions: Experimental and thermodynamic constraints and implications for the nature of the 400-km seismic discontinuity, J. Geophys. Res., 92, 4853-4866, 1987.
6. Bowman, J. R., and B. L. N. Kennett, An investigation of the upper mantle beneath NW Australia using a hybrid seismograph array, Geophys. J. Int., 101, 411-424, 1990.
7. Burdick, L. J., A Comparison of the upper-mantle structure beneath North America and Europe, J. Geophys. Res., 86, 5926-5936, 1981.
8. Burdick, L. J., and D. V. Helmberger, The upper mantle P velocity structure of the western United States, J. Geophys. Res., 83, 1699-1712, 1978.
9. Cary, P. W., Waveform inversion of marine refraction data, Ph.D. dissertation, Univ. of Cambridge, Cambridge, England, 1988.
10. Cary, P. W., and C. H. Chapman, Automatic one-dimensional inversion of marine refraction data, J. Geophys. Res., 93, 527-546, 1988.
11. Červený, V., M. M. Popov, and I. P̌senćik, Computation of wave fields in inhomogeneous media-Gaussian beam approach, Geophys. J. R. Astron. Soc., 70, 109-128, 1982.
12. Chapman, C. H., The Earth flattening transformation in body wave theory, Geophys. J. R. Astron. Soc., 35, 55-70, 1973.
13. Chapman, C. H., and R. Drummond, Body-wave seismograms in inhomogeneous media using Maslov asymptotic theory, Bull. Seismo. Soc. Am., 72, S277-S317, 1982.
14. Dey, B. K., B. L. N. Kennett, J. R. Bowman, and A. Goody, Variations in upper mantle structure under northern Australia, Geophys. J. Int., 114, 304-310, 1993.
15. Frazer, L. N., and A. Basu, Freeze-bath inversion, paper presented at Sixtieth Annual International Meeting and Exposition, Soc. of Explor. Geophys., San Francisco, Calif., 1990.
16. Goldberg, D. E., Genetic Algorithms in Search, Optimization and Machine Learning, Addinson-Wesley-Longman, Reading, Mass., 1989.
17. Helffrich, G. R., and B. J. Wood, 410km discontinuity sharpness and the form of the olivine α - β phase diagram: Resolution of apparent seismic contradictions, Geophys. J. Int., 126, F7-F12, 1996.
18. Helmberger, D. V., Numerical seismograms of long period body waves, Bull. Seismo. Soc. Am., 64, 45-60, 1973.
19. Ita, J., and L. Stixrude, Petrology, elasticity, and composition of the mantle transition zone, J. Geophys. Res., 97, 6849-6866, 1992.
20. 4 at high-pressures and temperatures: Precise determination of stabilities of olivine, modified spinel, and spinel, J. Geophys. Res., 94, 15,663-15,670, 1989.
21. Kennett, B. L. N., and J. R. Bowman, The velocity structure and heterogeneity of the upper mantle, Phys. Earth Planet. Inter., 59, 134-144, 1990.
22. Kennett, B. L. N., and E. R. Engdahl, Travel-times for global earthquake location and phase identification, Geophys. J. Int., 105, 429-465, 1991.
23. Melbourne, T., and D. Helmberger, Fine structure of the 410-km discontinuity, J. Geophys. Res., 103, 10,091-10,102, 1998.
24. Nábělek, P., Determination of earthquake source parameters from inversion of body waves, Ph.D. thesis, Mass. Inst. of Technol., Cambridge, 1984.
25. Neves, F., Velocity structure of upper mantle discontinuities from global waveform inversion of wide-angle land seismic data, Ph.D. thesis, Univ. of Cambridge, Cambridge, England, 1996.
26. Neves, F., S. C. Singh, and K. Priestley, Velocity structure of the upper mantle transition zones beneath central Eurasia from seismic inversion using genetic algorithms, Geophys. J. Int., 125, 869-878, 1996.
27. Priestley, K., J. Cipar, A. Egorkin, and N. Pavlenkova, Upper-mantle velocity structure beneath the Siberian platform, Geophys. J. Int., 118, 369-378, 1994.
28. Sambridge, M. S., and G. G. Drijkoningen, Genetic Algorithms in seismic waveform inversion, Geophys. J. Int., 109, 323-342, 1992.
29. Sen, M. K., and P. L. Stoffa, Rapid sampling of model space using genetic algorithm: examples from seismic waveform inversion, Geophys. J. Int., 108, 281-292, 1992.
30. Shearer, P.C., Transition zone velocity gradients and the 520-km discontinuity, J. Geophys. Res., 101, 3053-3066, 1996.
31. Stixrude, L., Structure and sharpness of phase transitions and mantle discontinuities. J. Geophys. Res., 102, 14,835-14,852, 1997.
32. Vidale, J. E., X.-Y. Ding, and S. P. Grand, The 410-km-depth discontinuity: A sharpness estimate from near-critical reflections, Geophys. Res. Lett., 22, 2557-2560, 1995.