Small-scale heterogeneity at the top of the lower mantle around the Mariana slab

Earth and Planetary Science Letters

Volumn 209, Issue 1-2, 2003, Pages 85-101

  Kaneshima, Satoshi ^a  

^a TOKYO INSTITUTE OF TECHNOLOGY   (Japan)

Author keywords

Former oceanic crust; S to P wave scattering; Seismic array analyses; Small scale heterogeneity; Top of the lower mantle

Indexed keywords

CHEMICAL COMPOSITION; HETEROGENEITY; MANTLE STRUCTURE; SEISMIC ANISOTROPY; SUBDUCTION ZONE;

MARIANA TRENCH; PACIFIC OCEAN;

EID: 0037446453     PISSN: 0012821X     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0012-821X(03)00048-7     Document Type: Article

References (35)

1. T. Lay, Structure and Fate of Subducting Slabs, Academic Press, San Diego, CA, 1996.
2. Y. Fukao, M. Obayashi, H. Inoue, M. Nenbai, Subducting slabs stagnant in the mantle transition zone, J. Geophys. Res. 97 (1992) 4809-4822.
3. Y. Fukao, S. Widiyantoro, M. Obayashi, Stagnant slabs in the upper and lower mantle transition region, Rev. Geophys. 39 (2001) 291-323.
4. K.M. Fisher, T.H. Jordan, K.C. Creager, Seismic constraints on the morphology of deep slabs, J. Geophys. Res. 93 (1988) 4773-4783.
5. H. Bijwaard, W. Spakman, E.R. Engdahl, Closing the gap between regional and global travel time tomography, J. Geophys. Res. 103 (1998) 30055-30078.
6. X.-Y. Ding, S.P. Grand, Seismic structure of the deep Kuril subduction zone, J. Geophys. Res. 99 (1994) 23767-23786.
7. M. Gurnis, B.H. Hager, Controls on the structure of subducted slabs, Nature 335 (1998) 317-321.
8. J.B. Gaherty, B.H. Hager, Compositional vs. thermal buoyancy and the evolution of subducted lithosphere, Geophys. Res. Lett. 21 (1994) 141-144.
9. A.E. Ringwood, T. Irifune, Nature of the 650 km seismic discontinuity: Implications for mantle dynamics and differentiation, Nature 331 (1988) 131-136.
10. M.A. Richards, D.F. Davies, On the separation of relatively buoyant components from subducted lithosphere, Geophys. Res. Lett. 16 (1989) 831-834.
11. K. Hirose, Y. Fei, Y. Ma, H.K. Mao, The fate of subducted basaltic crust in the Earth's lower mantle, Nature 397 (1999) 53-56.
12. S. Ono, E. Ito, T. Katsura, Mineralogy of subducted basaltic crust (MORB) from 25 to 37 GPa, and chemical heterogeneity of the lower mantle, Earth Planet. Sci. Lett. 5883 (2001) 1-7.
13. S. Karato, On the separation of crustal component from subducted oceanic lithosphere near the 660 km discontinuity, Phys. Earth Planet. Inter. 99 (1997) 103-111.
14. P.E. van Keken, S. Karato, D.A. Yuen, Rheological control of oceanic crust separation in the transition zone, Geophys. Res. Lett. 23 (1996) 1821-1824.
15. J.C. Castle, K.C. Creager, A steeply dipping discontinuity in the lower mantle beneath Izu-Bonin, J. Geophys. Res. 104 (1999) 7279-7292.
16. F. Niu, S. Kaneshima, H. Kawakatshu, Reflected S-to-P converted wave from a dipping mid-mantle reflector beneath Mariana subduction zone, EOS Trans. AGU 80 (1999) S217-S218.
17. F.K. Krüger, M. Baumann, F. Scherbaum, M. Weber, Mid mantle scatterers near the Mariana slab detected with a double array method, Geophys. Res. Lett. 28 (2001) 667-670.
18. S. Kaneshima, G. Helffrich, Detection of lower mantle scatterers northeast of the Mariana subduction zone using short-period array data, J. Geophys. Res. 103 (1998) 4825-4838.
19. S. Kaneshima, G. Helffrich, Dipping low-velocity layer in the mid-lower mantle evidence for geochemical heterogeneity, Science 283 (1999) 1888-1891.
20. S. Kaneshima, G. Helffrich, Subparallel dipping heterogeneities in the mid-lower mantle northeast of the Mariana subduction zone using, J. Geophys. Res. (2002), in press.
21. R. Tibi, D.A. Wiens, J.A. Hildebrand, Aftershock locations and rupture characteristics of the 1995 Mariana deep earthquake, Geophys. Res. Lett. 28 (2001) 4311-4314.
22. B.L. Kennett, E.R. Engdahl, R. Buland, Constraints on seismic velocities in the Earth from travel times, Geophys. J. Int. 122 (1995) 108-124.
23. P.L. MacFadden, B.J. Drummond, S. Kravis, The Nth-root stack theory, applications, and examples, Geophysics 51 (1986) 1879-1892.
24. J.D. Collier, G.R. Helffrich, B.J. Wood, Seismic discontinuity and subduction zones, Phys. Earth Planet. Inter. 127 (2001) 35-49.
25. N.S. Neidell, M.T. Taner, Semblance and other coherency measures for multichannel data, Geophysics 36 (1971) 482-497.
26. H. Kawakatsu, F. Niu, Seismic evidence for a 920-km discontinuity in the mantle, Nature 371 (1994) 301-305.
27. F. Niu, H. Kawakatsu, Seismic evidence for a 920-km discontinuity in the mantle, Geophys. Res. Lett. 371 (1997) 301-305.
28. P.G. Richards, Seismic waves reflected from velocity gradient anomalies within the Earth's mantle, J. Geophys. 38 (1972) 517-527.
29. C.W. Wicks, M.A. Richards, A detailed map of the 660-kilometer discontinuity beneath the Izu-Bonin subduction zone, Science 261 (1993) 1424-1427.
30. J.C. Collier, G. Helffrich, (1997). Topography of the '410' and '660' km seismic discontinuities in the Izu-Bonin subduction zone, Geophys. Res. Lett. 24 (1997) 1535-1538.
31. D.L. Anderson, Thermally induced phase changes, lateral heterogeneity of the mantle, continental roots, and deep slab anomalies, J. Geophys. Res. 92 (1987) 13968-13980.
32. S.H. Kirby, S. Stein, E.A. Okal, D.C. Rubie, Metastable mantle phase transformations and deep earthquakes in subducting oceanic lithosphere, Rev. Geophys. 34 (1996) 261-306.
33. E.R. Engdahl, R.D. van der Hilst, R. Buland, Global teleseismic earthquake relocation with improved travel times and procedures for depth determination, Bull. Seimol. Soc. Am. 88 (1998) 722-743.
34. A.M. Dziewonski, J.H. Woodhouse, Studies of seismic sources using normal-mode theory, in: Earthquakes: Observation, Theory, and Interpretation, North-Holland, 1983, pp. 45-137.
35. P. Wessel, W.H. Smith, New version of generic mapping tools, EOS Trans. AGU Electron. Suppl. (1995).