Convergence depths of tectonic regions from an ensemble of global tomographic models

Journal of Geophysical Research: Solid Earth

Volumn 118, Issue 8, 2013, Pages 4196-4225

  Jordan, Thomas H ^a   Paulson, Elizabeth M ^a  

^a UNIVERSITY OF SOUTHERN CALIFORNIA   (United States)

Author keywords

410 discontinuity; Bayesian model averaging; convergence depth; G discontinuity; lithosphere asthenosphere boundary; tectosphere

Indexed keywords

ASTHENOSPHERE; BAYESIAN ANALYSIS; CONTINENTAL LITHOSPHERE; MANTLE STRUCTURE; MODEL; OCEANIC CRUST; OCEANIC LITHOSPHERE; PLATE CONVERGENCE; PLATE TECTONICS; S-WAVE; SEISMIC VELOCITY; TECTONIC SETTING; THREE-DIMENSIONAL MODELING; TOPOGRAPHIC MAPPING;

EID: 84885169447     PISSN: 21699313     EISSN: 21699356     Source Type: Journal    
DOI: 10.1002/jgrb.50263     Document Type: Article

References (139)

1. Abt, D. L., K. M. Fischer, S. W. French, H. A. Ford, H. Yuan, and, B. Romanowicz, (2010), North American lithosphere discontinuity structure imaged by Ps and Sp receiver functions, J. Geophys. Res., 115, B09301, doi: 10.1029/2009JB00691.
2. Artemieva, I. M., (2006), Global 1° × 1° thermal model TC1 for the continental lithosphere: implications for lithosphere secular evolution, Tectonophysics, 416, 245-277.
3. Audet, P., and, R. Bürgmann, (2011), Dominant role of tectonic inheritance in supercontinent cycles, Nature Geosci., 4, 184-187, doi: 10.1038/NGEO1080.
4. Backus, G. E., and, J. F. Gilbert, (1968), The resolving power of gross Earth data, Geophys. J. Roy. Astron. Soc., 16, 169-205.
5. Bagley, B., and, J. Revenaugh, (2008), Upper mantle seismic shear discontinuities of the Pacific, J. Geophys. Res., 113, B12301, doi: 10.1029/2008JB005692.
6. Barrell, J., (1914), The strength of the Earth's crust, J. Geology, 22, 655-683.
7. Becker, T. W., and, L. Boschi, (2002), A comparison of tomographic and geodynamic mantle models, Geochem. Geophys. Geosyst., 3 (1), 1003, doi: 10.1029/2001GC000168.
8. Becker, T. W., B. Kustowski, and, G. Ekström, (2008), Radial seismic anisotropy as a constraint for upper mantle rheology, Earth Planet. Sci. Lett., 267, 213-227, doi: 10.1016/j.epsl.2007.11.038.
9. Bercovici, D., and, S. Karato, (2003), Whole-mantle convection and the transition-zone water filter, Nature, 425, 39-44. (Pubitemid 37101710)
10. Bommer, J. J., and, F. Scherbaum, (2008), The use and misuse of logic trees in probabilistic seismic hazard analysis, Earthq. Spectra, 24, 997-1009, doi: 10.1193/1.2977755.
11. Bostock, M. G., D. W. Eaton, and, D. B. Snyder, (2010), Teleseismic studies of the Canadian landmass: Lithoprobe and its legacy, Can. J. Earth. Sci., 47, 445-461, doi: 10.1139/E09-040.
12. Budnitz, R. J., G. Apostolakis, D. M. Boore, L. S. Cluff, K. J. Coppersmith, C. A. Cornell, and, P. A. Morris, (1997), Senior Seismic Hazard Analysis Committee recommendations for probabilistic seismic hazard analysis: guidance on uncertainty and Use of experts, U.S. Nuclear Regulatory Commission, U.S. Dept. of Energy, NUREG/CR-6372, UCRL-ID-122160, V. 1-2.
13. Burov, E. B., and, M. Diament, (1995), The effective elastic thickness (Te) of continental lithosphere: What does it really mean?, J. Geophys. Res., 100, 3905-3927.
14. Cammarano, F., and, B. Romanowicz, (2007), Insights into the nature of the transition zone from physically constrained inversion of long-period seismic data, Proc. Nat. Acad. Sci., 104, 9139-9144, doi: 10.1073/pnas.0608075104. (Pubitemid 47185746)
15. Cao, Q., R. D. van der Hilst, M. V. de Hoop, and, S.-H. Shim, (2011), Seismic imaging of transition zone discontinuities suggests hot mantle west of Hawaii, Science, 332, 1068-1071, doi: 10.1126/science.1202731.
16. Carlson, R. W., D. G. Pearson, and, D. E. James, (2005), Physical, chemical, and chronological characteristics of continental mantle, Rev. Geophys., 43, RG1001, doi: 10.1029/2004RG000156.
17. Conrad, C. P., M. D. Behn, and, P. G. Silver, (2007), Global mantle flow and the development of seismic anisotropy: Differences between the oceanic and the continental upper mantle, J. Geophys. Res., 112, B07317, doi: 10.1029/2006JB004608.
18. Courtier, A. M., and, J. Revenaugh, (2006), A water-rich transition zone beneath the eastern United States and Gulf of Mexico from multiple ScS reverberations, in Earth's Deep Water Cycle, Geophys. Monogr. Ser., vol. 168, edited by, S. D. Jacobsen, and, S. van der Lee, pp. 181-193, AGU, Washington, D. C.
19. Courtier, A. M., and, J. Revenaugh, (2007), Deep upper-mantle melting beneath the Tasman and Coral seas detected with multiple ScS reverberations, Earth Planet. Sci. Lett., 259, 66-76, doi: 10.1016/j.epsl.2007.04.027. (Pubitemid 46939599)
20. Cox, D. R., and, D. V. Hinkley, (1974), Theoretical Statistics, Chapman and Hall, London, pp. 511.
21. Dalton, C. A., and, U. H. Faul, (2010), The oceanic and cratonic upper mantle: Clues from joint interpretation of global velocity and attenuation models, Lithos, 120, 160-172, doi: 10.1016/j.lithos.2010.08.020.
22. Dziewonski, A. M., and, J. H. Woodhouse, (1987), Global images of the Earth's interior, Science, 236, 37-48.
23. Eaton, D. W., F. Darbyshire, R. L. Evans, H. Grütter, A. G. Jones, and, X. Yuan, (2009), The elusive lithosphere-asthenosphere boundary (LAB) beneath cratons, Lithos, 109, 1-22, doi: 10.1016/j.lithos.2008.05.009.
24. Ekström, G., and, A. M. Dziewonski, (1998), The unique anisotropy of the Pacific upper mantle, Nature, 394, 168-172. (Pubitemid 28325967)
25. Faul, U. H., and, I. Jackson, (2005), The seismological signature of temperature and grain size variations in the upper mantle, Earth Planet. Sci. Lett., 234, 119-134, doi: 10.1016/j.epsl.2005.02.008. (Pubitemid 40652202)
26. Ferreira, A. M. G., J. H. Woodhouse, K. Visser, and, J. Trampert, (2010), On the robustness of global radially anisotropic surface wave tomography, J. Geophys. Res., 115, B04313, doi: 10.1029/2009JB006716.
27. Field, E. H., et al. (2009), Uniform California Earthquake Rupture Forecast, Version 2 (UCERF 2), Bull. Seismol. Soc. Am., 99, 2053-2107, doi: 10.1785/0120080049.
28. Fischer, K. M., H. A. Ford, D. L. Abt, and, C. A. Rychert, (2010), The lithosphere-asthenosphere boundary, Annu. Rev. Earth Planet. Sci., 38, 551-75.
29. Fishwick, S., B. L. N. Kennett, and, A. M. Reading, (2005), Contrasts in lithospheric structure within the Australian craton-Insights from surface wave tomography, Earth Planet. Sci. Lett., 231, 163-176. (Pubitemid 40345235)
30. Forsyth, D. W., (1975), The early structural evolution and anisotropy of the oceanic upper mantle, Geophys. J. Roy. Astron. Soc., 43, 103-162.
31. Forte, A. M., and, H. K. C. Perry, (2002), Geodynamic evidence for a chemically depleted continental tectosphere, Science, 290, 1940-1944.
32. Fouch, M. J., D. E. Jame, J. C. VanDecar, S. van der Lee, and Kaapvaal Seismic Group (2004), Mantle seismic structure beneath the Kaapvaal and Zimbabwe cratons, S. African J. Geol., 107, 33-44. (Pubitemid 39174582)
33. Frederiksen, A. W., M. G. Bostock, and, J. F. Cassidy, (2001), S-wave velocity structure of the Canadian upper mantle, Phys. Earth Planet. Int., 124, 175-191. (Pubitemid 32710517)
34. Gaherty, J., and, T. H. Jordan, (1995), Lehmann discontinuity as the base of an anisotropic mechanical boundary layer beneath continents, Science, 268, 1468-1471.
35. Gaherty, J. B., T. H. Jordan, and, L. Gee, (1996), Seismic structure of the upper mantle in a central Pacific corridor, J. Geophys. Res., 101, 22,291-22,309.
36. Gaherty, J. B., M. Kato, and, T. H. Jordan, (1999), Seismological structure of the upper mantle: A regional comparison of mantle layering, Phys. Earth Planet. Int., 110, 21-41. (Pubitemid 30075705)
37. Goodman, S. N., (1999), Toward evidence-based medical statistics. 1: The p value fallacy, Ann. Intern. Med., 130, 995-1004. (Pubitemid 29283991)
38. Grand, S. P., (1994), Mantle shear structure beneath the Americas and surrounding oceans, J. Geophys. Res., 99, 11,591-11,621.
39. Grand, S. P., (2002), Mantle shear-wave tomography and the fate of subducted slabs, Phil. Trans. R. Soc. Lond. A, 360, 2475-2491, doi: 10.1098/rsta.2002.1077.
40. Grand, S. P., and, D. V. Helmberger, (1984), Upper mantle shear structure of North America, Geophys. J. Roy. Astron. Soc., 76, 399-438.
41. Grand, S. P., R. D. van der Hilst, and, S. Widiyantoro, (1997), Global seismic tomography: A snapshot of convection in the Earth, GSA Today, 7, 1-7. (Pubitemid 27472170)
42. Gu, Y. J., A. M. Dziewonski, W.-J. Su, and, G. Ekström, (2001), Models of the mantle shear velocity and discontinuities in the pattern of lateral heterogeneities, J. Geophys. Res., 106, 11,169-11,199.
43. Gu, Y. J., A. M. Dziewonski, and, G. Ekström, (2003), Simultaneous inversion for mantle shear velocity and topography of transition zone discontinuities, Geophys. J. Int., 154, 559-583, doi: 10.1046/j.1365-246X.2003. 01967. (Pubitemid 36967920)
44. Gu, Y. J., S. C. Webb, A. Lerner-Lam, and, J. B. Gaherty, (2005), Upper mantle structure beneath the eastern Pacific Ocean ridges, J. Geophys. Res., 110, B06305, doi: 10.1029/2004JB003381.
45. Gung, Y., M. Panning, and, B. Romanowicz, (2003), Global anisotropy and the thickness of continents, Nature, 422, 707-711. (Pubitemid 36514106)
46. Hirth, G., and, D. L. Kohlstedt, (1996), Water in the oceanic upper mantle: Implications for rheology, melt extraction, and the evolution of the lithosphere, Earth Planet. Sci. Lett., 144, 93-108, doi: 10.1016/0012-821X(96) 00154-9.
47. Hoeting, J. A., D. Madigan, A. E. Raftery, and, C. T. Volinsky, (1999), Bayesian model averaging:A tutorial, Stat. Sci., 14, 382-417.
48. Höink, T., A. Lenardic, and, M. Richards, (2012), Depth-dependent viscosity and mantle stress amplification: Implications for the role of the asthenosphere in maintaining plate tectonics, Geophys. J. Int., 191, 30-41, doi: 10.1111/j.1365-246X.2012.05621.x.
49. Houser, C., G. Masters, P. Shearer, and, G. Laske, (2008), Shear and compressional velocity models of the mantle from cluster analysis of long-period waveforms, Geophys. J. Int., 174, 195-21, doi: 10.1111/j.1365-246X.2008.03763. x.
50. Huang, J., S. Zhong, and, J. van Hunen, (2003), Controls on sublithospheric small-scale convection, J. Geophys. Res., 108 (B8), 2405, doi: 10.1029/2003JB002456.
51. Ishii, M., and, J. Tromp, (2001), Even-degree lateral variations in the Earth's mantle constrained by free oscillations and the free-air gravity anomaly, Geophys. J. Int., 145, 77-96. (Pubitemid 32282081)
52. James, D. E., M. J. Fouch, J. C. VanDecar, S. van der Lee, and Kaapvaal Seismic Group (2001), Tectospheric structure beneath southern Africa, Geophys. Res. Lett., 28, 2485-2488. (Pubitemid 32704425)
53. Jasbinsek, J. J., K. G. Dueker, and, S. M. Hansen, (2010), Characterizing the 410 km discontinuity low-velocity layer beneath the LA RISTRA array in the North American Southwest, Geochem. Geophys. Geosyst., 11, Q03008, doi: 10.1029/2009GC002836.
54. Jordan, T. H., (1975), The continental tectosphere, Rev. Geophys. Space Phys., 13, 1-12.
55. Jordan, T. H., (1978), Composition and development of the continental tectosphere, Nature, 274, 544-548.
56. Jordan, T. H., (1979a), Mineralogies, densities and seismic velocities of garnet lherzolites and their geophysical implications, in The Mantle Sample: Inclusions in Kimberlites and Other Volcanics, edited by, F. R. Boyd, and, H. O. A. Meyer, pp. 1-14, American Geophysical Union, Washington, D.C.
57. Jordan, T. H., (1979b), Structural geology of the Earth's interior, Proc. Nat. Acad. Sci. U.S., 76, 4192-4200.
58. Jordan, T. H., (1981a), Continents as a chemical boundary layer, Phil. Trans. R. Soc. Lond. A, 301, 359-373.
59. Jordan, T. H., (1981b), Global tectonic regionalization for seismological data analysis, Bull. Seismol. Soc. Am., 71, 1131-1141.
60. Jordan, T. H., (1988), Structure and formation of the continental tectosphere, J. Petrology, Special Volume (1), 11-37, doi: 10.1093/petrology/ Special-Volume.1.
61. Jordan, T. H., P. Puster, G. A. Glatzmaier, and, P. J. Tackley, (1993), Comparisons between seismic earth structures and mantle flow models based on radial correlation functions, Science, 261, 1427-1431. (Pubitemid 24418862)
62. Jordan, T. H., J. B. Gaherty, and, O. van Genabeek, (1996), Regional upper-mantle structures and their interpretation in terms of small-scale, anisotropic heterogeneities, Proceedings of the 18th Annual Seismic Research Symposium, PL-TR-96-2153, Phillips Laboratory, Massachusetts, pp. 361-370.
63. Jordan, T. H., R. L. Saltzer, and, J. B. Gaherty, (1999), Small-scale anisotropic heterogeneity in the continental upper mantle, Seismol. Res. Lett., 70, 259 (abstract).
64. Karato, S., (2012), On the origin of the asthenosphere, Earth Planet. Sci. Lett., 321-322, 95-103, doi: 10.1016/j.epsl.2012.01.001.
65. Katzman, R., L. Zhao, and, T. H. Jordan, (1998), High-resolution, two-dimensional vertical tomography of the central Pacific mantle using ScS reverberations and frequency-dependent travel times, J. Geophys. Res., 103, 17,933-17,971.
66. Kawakatsu, H., P. Kumar, Y. Takei, M. Shinohara, T. Kanazawa, E. Araki, and, K. Suyehiro, (2009), Seismic evidence for sharp lithosphere-asthenosphere boundaries of oceanic plates, Science, 324, 499-502, doi: 10.1126/science. 1169499.
67. Kearey, P., K. A. Klepeis, and, F. J. Vine, (2009), Global Tectonics, 3rd ed., p. 482, Wiley-Blackwell, Chichester, U.K.
68. Khan, A., L. Boschi, and, J. A. D. Connolly, (2011), Mapping the Earth's thermochemical and anisotropic structure using global surface wave data, J. Geophys. Res., 116, B01301, doi: 10.1029/2010JB007828.
69. Korenaga, J., and, T. H. Jordan, (2003), Physics of multiscale convection in Earth's mantle: Onset of sublithospheric convection, J. Geophys. Res., 108 (B7), 2333, doi: 10.1029/2002JB001760.
70. Korenaga, J., and, T. H. Jordan, (2004), Physics of multiscale convection in Earth's mantle: Evolution of sublithospheric convection, J. Geophys. Res., 109, B01405, doi: 10.1029/2003JB002464.
71. Korenaga, T., and, J. Korenaga, (2008), Subsidence of normal oceanic lithosphere, apparent thermal expansivity, and seafloor flattening, Earth Planet. Sci. Lett., 268, 41-51, doi: 10.1016/j.epsl.2007.12.022.
72. Kustowski, B., G. Ekström, and, A. M. Dziewonski, (2008), Anisotropic shear-wave velocity structure of the Earth's mantle: A global model, J. Geophys. Res., 113, B06306, doi: 10.1029/2007JB005169.
73. Landuyt, W., and, G. Ierley, (2012), Linear stability analysis of the onset of sublithospheric convection, Geophys. J. Int., 189, 19-28, doi: 10.1111/j.1365-246X.2011.05341.x.
74. Leahy, G. M., and, D. Bercovici, (2007), On the dynamics of a hydrous melt layer above the transition zone, J. Geophys. Res., 112, B07401, doi: 10.1029/2006JB004631.
75. Lee, C.-T. A., (2003), Compositional variation of density and seismic velocities in natural peridotites at STP conditions: Implications for seismic imaging of compositional heterogeneities in the upper mantle, J. Geophys. Res., 108 (B9), 2441, doi: 10.1029/2003JB002413.
76. Lee, C.-T, P. Luffi, and, E. J. Chin, (2011), Building and destroying continental mantle, Annu. Rev. Earth Planet. Sci., 39, 59-90, doi: 10.1446/annurev-earth-040610-133505.
77. Leeds, A. R., L. Knopoff, and, E. G. Kausel, (1974), Variations of upper mantle structure under the Pacific Ocean, Science, 186, 141-143.
78. Lekíc, V., and, B. Romanowicz, (2011), Inferring upper-mantle structure by full waveform tomography with the spectral element method, Geophys. J. Int., 185, 799-831, doi: 10.1111/j.1365-246X.2011.04969.x.
79. Lekíc, V., M. Panning, and, B. Romanowicz, (2010), A simple method for improving crustal corrections in waveform tomography, Geophys. J. Int., 182, 265-278, doi: 10.1111/j.1365-246X.2010.04602.x.
80. Lerner-Lam, A. L., and, T. H. Jordan, (1987), How thick are the continents?, J. Geophys. Res., 92, 14,007-14,026.
81. Masters, G., S. Johnson, G. Laske, H. Bolton, and, J. H. Davies, (1996), A shear-velocity model of the mantle, Phil. Trans. Roy. Soc. Lond. A, 354, 1385-1411.
82. Masters, G., H. Bolton, and, G. Laske, (1999), Joint seismic tomography for P and S velocities: How pervasive are chemical anomalies in the mantle?, Eos. Trans. AGU, 80, S14.
83. Masters, G., G. Laske, H. Bolton, and, A. M. Dziewonski, (2000), The relative behavior of shear velocity, bulk sound speed, and compressional velocity in the mantle: Implications for chemical and thermal structure, in Earth's deep interior, in Mineral Physics and Tomography from the Atomic to the Global Scale, Geophys. Monogr. Ser., vol. 117, edited by, S.-I. Karato, A. M. Forte, R. C. Liebermann, G. Masters, and, L. Stixrude, pp. 63-87, AGU, Washington, D. C.
84. Mégnin, C., and, B. A. Romanowicz, (2000), The 3D shear velocity structure of the mantle from the inversion of body, surface and higher mode waveforms, Geophys. J. Int., 143, 709-728. (Pubitemid 32015444)
85. Montagner, J.-P., (2002), Upper mantle low anisotropy channels below the Pacific plate, Earth Planet. Sci. Lett., 202, 263-374.
86. Montagner, J.-P., and, T. Tanimoto, (1991), Global upper mantle tomography of seismic velocities and anisotropies, J. Geophys. Res., 96, 20,337-20,337, doi: 10.1029/91JB01890.
87. Mooney, W. D., G. Laske, and, T. G. Masters, (1998), CRUST 5.1: A global crustal model at 5° × 5°, J. Geophys. Res., 103, 727-747.
88. Muller, R. D., M. Sdrolias, C. Gaina, and, W. R. Roest, (2008), Age, spreading rates, and spreading asymmetry of the world's ocean crust, Geochem. Geophys. Geosyst., 9, Q04006, doi: 10.1029/2007GC001743.
89. Nettles, M., and, A. M. Dziewonski, (2008), Radially anisotropic shear velocity structure of the upper mantle globally and beneath North America, J. Geophys. Res., 113, B02303, doi: 10.1029/2006JB004819.
90. Nickerson, R. S., (2000), Null hypothesis significance testing: A review of an old and continuing controversy, Psychol. Meth., 5, 241-301, doi: 10.1037//1082-989X.S.2.241.
91. Nishimura, C. E., and, D. W. Forsyth, (1989), The anisotropic structure of the upper mantle in the Pacific, J. Geophys. Res., 96, 203-229.
92. Okal, E. A., (1978), Observed very long period Rayleigh-wave phase velocities across the Canadian shield, Geophys. J. Roy. Astron. Soc., 53, 663-668.
93. Panning, M., and, B. Romanowicz, (2006), A three-dimensional radially anisotropic model of shear velocity in the whole mantle, Geophys. J. Int., 167, 361-379, doi: 10.1111/j.1365-246X.2006.03100.x. (Pubitemid 44489897)
94. Panning, M. P., V. Lekic̈, and, B. A. Romanowicz, (2010), Importance of crustal corrections in the development of a new global model of radial anisotropy, J. Geophys. Res., 115, B12325, doi: 10.1029/2010JB007520.
95. Pedersen, H. A., M. Bruneton, V. Maupin, and SVEKALAPKO Seismic Tomography Working Group (2006), Lithospheric and sublithospheric anisotropy beneath the Baltic shield from surface-wave array analysis, Earth Planet. Sci. Lett., 244, 590-605, doi: 10.1016/j.epsl.2006.02.009.
96. Priestley, K., and, D. McKenzie, (2006), The thermal structure of the lithosphere from shear wave velocities, Earth Planet. Sci. Lett., 244, 285-301, doi: 10.1016/j.epsl.2006.01.008.
97. Priestley, K., E. Debayle, D. McKenzie, and, S. Pilidou, (2006), Upper mantle structure of eastern Asia from multimode surface waveform tomography, J. Geophys. Res., 111, B10304, doi: 10.1029/2005JB004082.
98. Puster, P., and, T. H. Jordan, (1994), Stochastic analysis of mantle convection experiments using two-point correlation functions, Geophys. Res. Lett., 21, 305-308. (Pubitemid 24426014)
99. Puster, P., and, T. H. Jordan, (1997), How stratified is mantle convection?, J. Geophys. Res., 102, 7625-7646.
100. Revenaugh, J., and, T. H. Jordan, (1991), Mantle layering from ScS reverberations: 3. The upper mantle, J. Geophys. Res., 96, 19,781-19,810.
101. Revenaugh, J., and, S. A. Sipkin, (1994), Seismic evidence for silicate melt atop the 410-km mantle discontinuity, Nature, 369, 474-476, doi: 10.1038/369474a0.
102. Ritsema, J., H. J. van Heijst, and, J. H. Woodhouse, (2004), Global transition zone tomography, J. Geophys. Res., 109, doi: 10.1029/2003JB002610.
103. Ritsema, J., A. Deuss, H. J. van Heijst, and, J. H. Woodhouse, (2010), S40RTS: A degree-40 shear-velocity model for the mantle from new Rayleigh wave dispersion, teleseismic traveltime and normal-mode splitting function measurements, Geophys. J. Int., 184, 1223-1236, doi: 10.1111/j.1365-246X.2010. 04884.x.
104. Ritzwoller, M. H., N. M. Shapiro, and, S. Zhong, (2004), Cooling history of the Pacific lithosphere, Earth Planet. Sci. Lett., 226, 69-84. (Pubitemid 39234625)
105. Romanowicz, B., (1991), Seismic tomography of the Earth's mantle, Ann. Rev. Earth Space Sci., 19, 77-99.
106. Romanowicz, B., (2010), The thickness of tectonic plates, Science, 324, 474-476.
107. Rychert, C. A., and, P. M. Shearer, (2009), A global view of the lithosphere-asthenosphere boundary, Science, 324, 495-498, doi: 10.1126/science.1169754.
108. Rychert, C. A., and, P. M. Shearer, (2011), Imaging the lithosphere-asthenosphere boundary beneath the Pacific using SS waveform modeling, J. Geophys. Res., 116, B07307, doi: 10.1029/2010JB008070.
109. Saltzer, R. L., J. B. Gaherty, and, T. H. Jordan, (2000), How are vertical shear wave splitting measurements affected by variations in the orientation of azimuthal anisotropy with depth?, Geophys. J. Int., 141, 374-390. (Pubitemid 30309247)
110. Schaeffer, A. J., and, M. G. Bostock, (2010), A low-velocity zone atop the transition zone in northwestern Canada, J. Geophys. Res., 115, B06302, doi: 10.1029/2009JB006856.
111. Schmerr, N., (2012), The Gutenberg discontinuity: Melt at the lithosphere-asthenosphere boundary, Science, 335, 1480-1483, doi: 10.1126/science.1215433.
112. Sclater, J. G., and, B. Parsons, (1981), Oceans and continents: Similarities and differences in the mechanisms of heat loss, J. Geophys. Res., 86, 11,535-11,552.
113. Silver, P. G., S. S. Gao, K. H. Liu, and Kaapvaal Seismic Group (2001), Mantle deformation beneath southern Africa, Geophys. Res. Lett., 28, 2493-2496. (Pubitemid 32706912)
114. Simmons, N. A., A. M. Forte, and, S. P. Grand, (2007), Thermochemical structure and dynamics of the African superplume, Geophys. Res. Lett., 34, L02301, doi: 10.1029/2006GL028009.
115. Simmons, N. A., A. M. Forte, and, S. P. Grand, (2009), Joint seismic, geodynamic and mineral physical constraints on three-dimensional mantle heterogeneity: Implications for the relative importance of thermal versus compositional heterogeneity, Geophys. J. Int., 177, 1284-1304, doi: 10.1111/j.1365-246X.2009.04133.x.
116. Sipkin, S. A., and, T. H. Jordan, (1976), Lateral heterogeneity of the upper mantle determined from the travel times of multiple ScS, J. Geophys. Res., 81, 6307-6320.
117. Song, T. A., D. V. Helmberger, and, S. P. Grand, (2004), Low velocity zone atop the 410 seismic discontinuity in the northwestern United States, Nature, 427, 530-533, doi: 10.1038/nature02231. (Pubitemid 38209108)
118. Stein, C. A., and, S. Stein, (1992), A model for the global variation in oceanic depth and heat flow with lithospheric age, Nature, 359, 123-129. (Pubitemid 23384817)
119. Su, W.-J., and, A. M. Dziewonski, (1997), Simultaneous inversion for 3-D variations in shear and bulk velocity in the mantle, Earth Planet. Sci. Lett., 100, 135-156.
120. Takeuchi, N., (2007), Whole mantle SH velocity model constrained by waveform inversion based on three-dimensional Born kernels, Geophys. J. Int., 169, 1153-1163, doi: 10.1111/j.1365-246X.2007.03405.x. (Pubitemid 46894898)
121. Tan, Y., and, D. V. Helmberger, (2007), Trans-Pacific upper mantle shear velocity structure, J. Geophys. Res., 112, B08301, doi: 10.1029/2006JB004853.
122. Tarantola, A., (2005), Inverse problem theory and methods for model parameter estimation. Society of Industrial and Applied Mathematics, 343 pp.
123. Tauxe, L., (2002), Paleomagnetic Principles and Practice, p. 299, Springer, Princeton, N.J.
124. Tauzin, B., E. Debayle, and, G. Wittlinger, (2010), Seismic evidence for a global low velocity layer in the Earth's upper mantle, Nat. Geosci., 3, 718-721, doi: 10.1038/ngeo969.
125. Thybo, H., (2006), The heterogeneous upper mantle low velocity zone, Tectonophysics, 416, 53-79.
126. Torsvik, T. H., K. Burke, B. Steinberger, S. J. Webb, and, L. D. Ashwal, (2010), Diamonds sampled by plumes from the core-mantle boundary, Nature, 466, 352-355, doi: 10.1038/nature09216.
127. van der Lee, S., and, A. Frederiksen, (2005), Surface wave tomography applied to the North American upper mantle, in Seismic Earth: Array Analysis of Broadband Seismograms, Geophysical Monogr. Ser., vol. 157, edited by, A. Levander, and, G. Nolet, pp. 67-80, AGU, Washington, D. C.
128. van der Lee, S., and, G. Nolet, (1997), Upper-mantle S-velocity structure of North America, J. Geophys. Res., 102, 22,815-22,838.
129. van Hunen, J., J. Huang, and, S. Zhong, (2003), The effect of shearing on the onset and vigor of small-scale convection in a Newtonian rheology, Geophys. Res. Lett., 30 (19), 1991, doi: 10.1029/2003GL018101.
130. Vinnik, L., and, V. Farra, (2002), Subcratonic low-velocity layer and flood basalts, Geophys. Res. Lett., 29 (4), 1049, doi: 10.1029/2001GL014064.
131. Vinnik, L., and, V. Farra, (2007), Low S velocity atop the 410-km discontinuity and mantle plumes, Earth Planet. Sci. Lett., 262, 398-412, doi: 10.1016/j.epsl.2007.07.051. (Pubitemid 47535027)
132. Vinnik, L., M. R. Kumar, R. Kind, and, V. Farra, (2003), Superdeep low-velocity layer beneath the Arabian plate, Geophys. Res. Lett., 30 (7), 1415, doi: 10.1029/2002GL016590.
133. Vinnik, L., Y. Ren, E. Stutzmann, V. Farra, and, S. Kiselev, (2010), Observations of S410p and S350p phases at seismograph stations in California, J. Geophys. Res., 115, B05303, doi: 10.1029/2009JB006582.
134. Watson, G. S., (1982), Distributions on a circle and a sphere, J. App. Prob., 19, 265-280.
135. Watts, A. B., (2001), Isostasy and Flexure of the Lithosphere, p. 458, Cambridge Univ. Press, Cambridge, U.K.
136. Wittlinger, G., and, V. Farra, (2007), Converted waves reveal a thick and layered tectosphere beneath the Kalahari super-craton, Earth Planet. Sci. Lett., 254, 404-415, doi: 10.1016/j.epsl.2006.11.048. (Pubitemid 46179045)
137. Woodhouse, J. H., and, A. M. Dziewonski, (1984), Mapping the upper mantle: Three-dimensional modeling of earth structure by inversion of seismic waveforms, J. Geophys. Res., 89, 5953-5986.
138. Xu, Y., and, D. A. Wiens, (1997), Upper mantle structure of the southwest Pacific from regional waveform inversion, J. Geophys. Res., 102, 27,439-27,451, 97JB02564.
139. Yuan, H., and, B. Romanowicz, (2010), Lithospheric layering in the North American craton, Nature, 466, 1063-1068, doi: 10.1038/nature09332.