Upper mantle velocity structure beneath southern Africa from modeling regional seismic data

Journal of Geophysical Research: Solid Earth

Volumn 104, Issue B3, 1999, Pages 4783-4794

  Zhao, Ming ^a,c   Langston, Charles A ^a   Nyblade, Andrew A ^a   Owens, Thomas J ^b  

^a PENNSYLVANIA STATE UNIVERSITY   (United States)

^b UNIVERSITY OF SOUTH CAROLINA   (United States)

^c CHEVRON ENERGY TECHNOLOGY COMPANY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

MANTLE STRUCTURE; SEISMIC VELOCITY; VELOCITY STRUCTURE;

(SOUTHERN); AFRICA;

EID: 0033541048     PISSN: 21699313     EISSN: 21699356     Source Type: Journal    
DOI: 10.1029/1998jb900058     Document Type: Article

References (34)

1. Aki, K., and P.G. Richards, Quantitative Seismology: Theory and Methods, W. H. Freeman, New York, 1980.
2. Barker, J.S., A seismological analysis of the May 1980 Mammoth Lakes, California, earthquakes, Ph.D. thesis, Penn. State Univ., University Park, 1984.
3. Benz, H.M., and J.E. Vidale, Sharpness of upper-mantle discontinuities determined from high-frequency reflections, Nature, 365(9), 147-150, 1993.
4. Bloch, S., A.L. Hales, and M. Landisman, Velocities in the crust and upper mantle of southern Africa from multi-mode surface wave dispersion, Bull. Seismol. Soc. Am., 59, 1599-1630, 1969.
5. Bowers, D., The October 30, 1994, seismic disturbance in South Africa: Earthquake or large rock burst?, J. Geophys. Res., 102, 9843-9857, 1997.
6. Bowman, J.R., and B.L.N. Kennett, An investigation of the upper mantle beneath north-western Australia using a hybrid seismograph array, Geophys. J. Int., 101, 411-424, 1990.
7. Cichowicz, A., and R. Green, Tomographic study of upper-mantle structure of the South African continent using wave-form inversion, Phys. Earth Planet. Inter., 72, 276-285, 1992.
8. Clouser, R.H., and C.A. Langston, Upper mantle structure of southern Africa from Pnl waves, J. Geophys. Res., 95, 17403-17415, 1990.
9. Gerver, M.V., Determination of a seismic wave velocity from the travel time curve, Geophys. J. R. Astron. Soc., 11, 165-173, 1966.
10. Green, A.G., An upper mantle P-wave velocity model for eastern and southern Africa, Pure Appl. Geophys., 116, 1263-1273, 1978.
11. Green, W.V., U. Achauer, and R.P. Meyer, A three-dimensional seismic image of the crust and upper mantle beneath the Kenya rift, Nature, 354, 199-203, 1991.
12. Kennett, B.L.N., and E.R. Engdahl, Travel times for global earthquake location and phase identification, Geophys. J. Int., 105, 429-465, 1991
13. King, D.W., and G. Calcagnile, P-wave velocity in the upper mantle beneath Fennoscandia and western Russia, Geophys. J. R. astron. Soc., 46, 407-432, 1976.
14. KRISP, Structure of the Kenya Rift from seismic refraction, Nature, 325, 239-242, 1987.
15. KRISP, Large-scale variation in lithospheric structure along and across the Kenya rift, Nature, 354, 223-227, 1991.
16. LeFevre, L.V., and D.V. Helmberger, Upper mantle P velocity structure of the Canadian shield, J. Geophys. Res., 94, 17749-17765, 1989.
17. Le-Stunff, Y., C.W. Wicks. Jr., and B. Romanowicz, P′P' precursors under Africa: Evidence for mid-mantle reflectors, Science, 270(6), 74-77, 1995.
18. Leven, J.H., The application of synthetic seismograms to the interpretation of the upper mantle P-wave velocity structure in northern Australia, Phys. Earth Planet. Inter., 38, 9-27, 1985.
19. Lithgow-Bertelloni, C., and P. Silver, Dynamic topography, plate driving forces, and the African superswell, Nature, 395, 269-273, 1998.
20. Masters, G., and H. Bolton, Large-scale shear velocity structure of the mantle, Eos Trans. AGU, 72(44), Fall Meet. Suppl., 316, 1991.
21. Nyblade, A.A., and S.W. Robinson, The African Superswell, Geophys. Res. Lett., 21, 765-768, 1994.
22. Nyblade, A.A., K.S. Vogfjord, and C.A. Langston, P wave velocity structure of Proterozoic upper mantle beneath central and southern Africa, J. Geophys. Res., 101, 11159-11171, 1996a.
23. Nyblade, A.A., C. Birt, C.A. Langston, T.J. Owens, and R.J. Last, Seismic experiment reveals rifting of craton in Tanzania, Eos Trans. AGU, 77, 517-521, 1996b.
24. Owens, T.J., A.A. Nyblade, and C.A. Langston, The Tanzania broadband experiment, IRIS News., XIV(1), 5-7, 1995.
25. Paulssen, H., Evidence for a sharp 660-km discontinuity as inferred from P-to-S converted waves, J. Geophys. Res., 93, 10489-10500, 1988.
26. Petersen, N., L. Vinnik, G. Kosarev, R. Kind, S. Oreshin, and K. Stammler, Sharpness of the mantle discontinuities, Geophys. Res. Lett., 20, 859-862, 1993.
27. Prodehl, C., G.R. Keller, and M.A. Khan, Crustal and upper mantle structure of the Kenya Rift, Tectonophysics Spec. Issue, 236, 483pp., 1994.
28. Qiu, X., K. Priestley, and D. McKenzie, Average lithospheric structure of southern Africa, Geophys. J. Int., 127, 563-587, 1996.
29. Rudnick, R.L., W.F. McDonough, and R.J. O'Connel, Thermal structure, thickness and composition of continental lithosphere, Chem. Geol, 145, 395-411, 1998.
30. Ryberg, T., F. Wenzel, J. Mechie, A. Egorkin, K. Fuchs, and L. Solodilov, Two-dimensional velocity structure beneath northern Eurasia derived from the super long-range seismic profile Quartz, Bull. Seismol. Soc. Am., 86, 857-867, 1996.
31. Shearer, P.M., Transition zone velocity gradients and the 520-km discontinuity, J. Geophys. Res., 101, 3053-3066, 1996.
32. Su, W.J., R.L. Woodward, and A.M. Dziewonski, Degree-12 model of shear velocity heterogeneity in the mantle, J. Geophys. Res., 99, 6945-6980, 1994.
33. Vinnik, L.P., R.W.E. Green, L.O. Nicolaysen, G.L. Kosarv, and N.V. Petersen, Deep seismic structure of the Kaapvaal craton, Tectonophysics, 262, 67-75, 1996.
34. Zhao, M., C.A. Langston, A.A. Nyblade, and T.J. Owens, Lower-crustal rifting in the Rukwa Graben, East Africa, Geophys. J. Int., 129, 412-420, 1997.