Seismic tomography with P and S data reveals lateral variations in the rigidity of deep slabs

Hirahara, 1981, Three-dimensional seismic structure beneath southwest Japan: the subducting Philippine sea plate, Tectonophysics, 79, 1, 10.1016/0040-1951(81)90231-6 Kamiya, 1988, How deep can we see the high velocity anomalies beneath the Japan Islands?, Geophys. Res. Lett., 15, 828, 10.1029/GL015i008p00828 Spakman, 1989, Resolution experiments for NW Pacific subduction zone tomography, Geophys. Res. Lett., 16, 1097, 10.1029/GL016i010p01097 Zhou, 1990, P and S wave travel time inversions for subducting slabs under the island arcs of the northwest Pacific, J. Geophys. Res., 95, 6829, 10.1029/JB095iB05p06829 van der Hilst, 1991, Tomographic imaging of subducted lithosphere below northwest Pacific island arcs, Nature, 353, 37, 10.1038/353037a0 Fukao, 1992, Subducting slabs stagnant in the mantle transition zone, J. Geophys. Res., 97, 4809, 10.1029/91JB02749 Engdahl, 1998, Global tele-seismic earthquake relocation with improved travel times and procedures for depth determination, Bull. Seismol. Soc. Am., 88, 722, 10.1785/BSSA0880030722 Bijwaard, 1998, Closing the gap between regional and global travel time tomography, J. Geophys. Res., 103, 30055, 10.1029/98JB02467 Creager, 1986, Slab penetration into the lower mantle beneath the Mariana and other island arcs of the northwest Pacific, J. Geophys. Res., 91, 3573, 10.1029/JB091iB03p03573 Kennett, 1998, Joint seismic tomography for bulk-sound and shear wavespeed in the Earth's mantle, J. Geophys. Res., 103, 12469, 10.1029/98JB00150 S. Widiyantoro, Studies of Seismic Tomography on Regional and Global Scale, Ph.D. Thesis, Australian National University, 1997, 256 pp. Kennett, 1995, Constraints on seismic velocities in the Earth from travel times, Geophys. J. Int., 122, 108, 10.1111/j.1365-246X.1995.tb03540.x Widiyantoro, 1996, Structure and evolution of lithospheric slab beneath the Sunda arc, Indonesia, Science, 271, 1566, 10.1126/science.271.5255.1566 Widiyantoro, 1997, Mantle structure beneath Indonesia inferred from high-resolution tomographic imaging, Geophys. J. Int., 130, 167, 10.1111/j.1365-246X.1997.tb00996.x Paige, 1982, LSQR: an algorithm for sparse linear equations and sparse least squares, ACM Trans. Math. Soft., 8, 43, 10.1145/355984.355989 Nolet, 1987, Seismic wave propagation and seismic tomography, 1 van der Hilst, 1995, Complex morphology of subducted lithosphere in the mantle beneath the Tonga trench, Nature, 374, 154, 10.1038/374154a0 Shearer, 1992, Global mapping oftopography on the 660km discontinuity, Nature, 355, 791, 10.1038/355791a0 Widiyantoro, 1998, Extending shear-wave tomography for the lower mantle using S and SKS arrival-time data, Earth Planets Space, 50, 999, 10.1186/BF03352194 Estabrook, 1996, The nature of the 660-km upper-mantle seismic discontinuity from precursors to the PP phase, Science, 274, 1179, 10.1126/science.274.5290.1179 Shearer, 1998, Resolving the average velocity and density jumps across upper-mantle discontinuities by modelling the range dependence of SS and PP precursors amplitudes, Eos, 79, F641. Dziewonski, 1981, Preliminary reference Earth model, Phys. Earth Planet. Inter., 25, 297, 10.1016/0031-9201(81)90046-7 Grand, 1997, Global seismic tomography: a snapshot of convection in the Earth, Geol. Soc. Am. Today, 7 (4), 1 van der Hilst, 1997, Evidence for deep mantle circulation from global tomography, Nature, 386, 578, 10.1038/386578a0 van der Hilst, 1998, Deep subduction and aspherical variations in P-wavespeed at the base of Earth's mantle, Geodynamics, AGU, 28, 5, 10.1029/GD028p0005 Fukao, 1998, Stagnant slabs in the Bullen transition region, Eos, 79 (45), F586 Spakman, 1993, Traveltime tomography of the European–Mediterranean mantle down to 1400km, Phys. Earth Planet. Inter., 79, 374, 10.1016/0031-9201(93)90142-V van der Hilst, 1993, Effects of relative plate motion on the deep structure and penetration depth of slabs below the Izu Bonin and Mariana island arcs, Earth Planet. Sci. Lett., 120, 395, 10.1016/0012-821X(93)90253-6 Kincaid, 1987, An experimental study of subduction and slab migration, J. Geophys. Res., 92, 13832, 10.1029/JB092iB13p13832 Griffiths, 1995, A laboratory investigation of effects of trench migration on the descent of subducted slabs, Earth Planet. Sci. Lett., 133, 1, 10.1016/0012-821X(95)00027-A Gurnis, 1988, Controls of the structure of subducted slabs, Nature, 335, 317, 10.1038/335317a0 Davies, 1995, Penetration of plates and plumes through the mantle transition zone, Earth Planet. Sci. Lett., 133, 507, 10.1016/0012-821X(95)00039-F Zhong, 1995, Mantle convection with plates and mobile, faulted plate margins, Science, 267, 838, 10.1126/science.267.5199.838 Christensen, 1996, The influence of trench migration on slab penetration into the lower mantle, Earth Planet. Sci. Lett., 140, 27, 10.1016/0012-821X(96)00023-4 Riedel, 1997, Grain-size evolution in subducted oceanic lithosphere associated with the olivine-spinel transformation and its effects on rheology, Earth Planet. Sci. Lett., 148, 27, 10.1016/S0012-821X(97)00016-2