Abstract
Analysis of hundreds of seismograms from a seismic array in the Japanese islands reveals a seismic discontinuity at a depth of about 920 km in the mantle beneath the Tonga subduction zone. This discontinuity is also evident beneath subduction zones in the Japan and Flores seas. The discontinuity probably represents either a change in mantle chemical composition or the signature of the subducted slab's garnet layer.
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References
Bullen, K. E. An Introduction to the Theory of Seismology 3rd edn (Cambridge Univ. Press, 1963).
Dziewonski, A. M. & Anderson, D. L. Phys. Earth planet. Inter. 25, 297–356 (1981).
Kennett, B. L. N. & Engdahl, E. R. Geophys. J. Int. 105, 429–465 (1991).
Ringwood, A. E. Composition and Petrology of the Earth's Mantle (McGraw-Hill, New York, 1975).
Ito, E. & Takahashi, E. J. geophys. Res. 94, 10637–10646 (1989).
Anderson, D. L. Theory of the Earth (Blackwell Scientific, Boston, 1989).
Gutenberg, B. Trans. Am. geophys. Un. 39, 86–489 (1958).
Repetti, W. C. thesis, St. Louis Univ. (1930).
Hoffman, J. P., Berg, J. W. & Cook, K. L. Bull seism. Soc. Am. 51, 17–27 (1961).
Vvedenskaya, A. V. & Balakina, L. M. Izv. Akad. Nauk SSSR Geophys. Ser. 7, 1138–1146 (1959).
Kanamori, H. Bull. Earth. Res. Inst. Tokyo Univ. 45, 657–678 (1967).
Johnson, L. R. Bull seism. Soc. Am. 59, 973–1008 (1969).
Petersen, N., Gossler, J., Kind, R., Stammler, K. & Vinnik, L. Geophys. Res. Lett. 20, 281–284 (1993).
Revenaugh, J. & Jordan, T. H. J. geophys. Res. 94, 5787–5813 (1989).
Revenaugh, J. & Jordan, T. H. J. geophys. Res. 96, 19763–19780 (1991).
Wicks, C. W. Jr & Richards, M. A. EOS 74, 550 (1993).
Shearer, P. M. & Masters, T. G. Nature 355, 791–796 (1992).
Vidale, J. E. & Benz, H. M. Nature 356, 678–682 (1992).
Benz, H. M. & Vidale, J. E. Nature 365, 147–150 (1993).
Wicks, C. W. Jr & Richards, M. A. Science 261, 1424–1427 (1993).
Shearer, P. M. Nature 344, 121–126 (1990).
J-Array Group J. Geomag. Geoelect. 45, 1265–1274 (1993).
Kanasewich, E. R. Time Sequence Analysis in Geophysics (Univ. Alberta Press, Edmonton, 1973).
Niu, F.-L. thesis Univ. Tokyo (1994).
Kennett, B. L. N. in Seismological Algorithms (ed. Doornbos, D. J.) 237–259 (Academic, San Diego, 1988).
Dziewonski, A. M., Chou, T.-A. & Woodhouse, J. H. J. geophys. Res. 86, 2825–2853 (1981).
Ringwood, A. E. & Irifune, T. Nature 331, 131–136, (1988).
Gutenberg, B. Physics of the Earth's Interior (Academic, New York, 1959).
Corbishley, D. J. Geophys. J. R. astr. Soc. 19, 1–14 (1970).
Vinnik, L. P., Lukk, A. A. & Nikoleav, A. V. Phys. Earth planet. Inter. 5, 328–331 (1972).
Datt, R. & Muirhead, K. J. Phys. Earth planet. Inter. 15, 28–38 (1977).
Whitcomb, J. H. & Anderson, D. L. J. geophys. Res. 75, 5713–5728 (1970).
Gurrola, H., Minster, J. B. & Owens, T. Geophys. J. Int. 117, 427–440 (1994).
Irifune, T. Nature 370, 131–132 (1994).
Wang, Y., Guyot, F. & Liebermann, R. C. J. geophys. Res. 97, 12327–12347 (1992).
Wolf, G. H. & Bukowinski, M. S. T. Geophys. Res. Lett. 12, 809–812 (1985).
Funamori, N. & Yagi, T. Geophys. Res. Lett. 20, 387–390 (1993).
Stixrude, L. & Cohen, R. E. Nature 613, 613–616 (1993).
Jeanloz, R. & Morris, S. A. Rev. Earth planet. Sci. 14, 377–415 (1986).
Grand, S. P. J. geophys. Res. 99, 11591–11621 (1994).
Silver, P. G., Carlson, R. W. & Olson, P. A. Rev. Earth planet. Sci. 16, 477–541 (1988).
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Kawakatsu, H., Niu, F. Seismic evidence for a 920-km discontinuity in the mantle. Nature 371, 301–305 (1994). https://doi.org/10.1038/371301a0
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DOI: https://doi.org/10.1038/371301a0
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