Abstract
The precise depths at which seismic velocities change abruptly in the upper mantle are revealed by the analysis of data from hundreds of seismometers across the western United States. The boundary near 410km depth is locally elevated, that near 660 km depressed. The depths of these boundaries, which mark phase transitions, provide an in situ thermometer in subduction zones: the observed temperature contrasts require at least moderate thickening of the subducting slab near 660 km depth. In addition, a reflector near 210 km depth may mark the bottom of the aesthenosphere.
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References
Jeanloz, R. Geophys. Res. Lett. 18, 1743–1746 (1991).
Shearer, P. M. & Masters, T. G. Nature 355, 791–795 (1992).
Silver, P. G., Carlson, R. W. & Olson, P. A. Rev. Earth planet. Sci. 16, 477–541 (1990).
Helmberger, D. V. & Engen, G. J. geophys. Res. 79, 4017–4029 (1974).
Shearer, P. M. J. geophys. Res. 96, 18147–18182 (1991).
Revenaugh, J. & Jordan, T. H. J. geophys. Res. 96, 19763–19780 (1991).
Wald, L. A. & Heaton, T. H. J. geophys. Res. 96, 12099–12125 (1991).
Van der Hilst, R., Engdahl, E. R., Spakman, V. & Nolet, G. Nature 353, 37–43 (1991).
Stark, P. B. & Frohlich, C. J. geophys. Res. 90, 1859–1869 (1985).
Richards, M. A. & Wicks, C. W. Jr Geophys. J. 101, 1–35 (1990).
Ito, E. & Takahashi, E. J. geophys. Res. 94, 10637 (1989).
Fischer, K., Creager, K. & Jordan, T. H. J. geophys. Res. 93, 4773 (1988).
Akaogi, M., Ito, E. & Navrotsky, A. J. geophys. Res. 94, 15671–15688 (1989).
Katsura, T. & Ito, E. J. geophys. Res. 94, 15663–15671 (1989).
Sung, C. M. & Burns, R. G. Earth planet Sci. Lett. 32, 165–170 (1976).
Iidaka, T. & Suetgetsu, D. Nature (in the press).
Solomon, S. C. & U, K.T.P. Phys. Earth planet Sci. Lett. 11, 97–108 (1975).
Helffrich, G. R., Stein, S. & Wood, B. J. J. geophys. Res. 94, 753–763 (1989).
Green, H. W. & Burnley, P. C. Nature 341, 733–737 (1989).
Kirby, S. H., Durham, W. B. & Stern, L. A. Science 252, 216–225 (1991).
Lehmann, I. Ann. Geophys. 15, 93–118 (1959).
Anderson, D. L. J. geophys. Res. 84, 7555–7561 (1979).
Bowman, J. R. & Kennett, B. L. N. Geophys. J. Int. 101, 355–366 (1990).
Given, J. W. & Helmberger, D. V. J. geophys. Res. 85, 7183–7184 (1980).
Kanamori, H. Bull. Earthquake Res. Inst. 45, 657 (1967).
Kato, M. & Hirahara, K. Geophys. J. Int. 106, 551–558 (1991).
Revenaugh, J. & Jordan, T. H. J. geophys. Res. 96, 19781–19810 (1991).
Anderson, D. L. & Bass, J. Nature 320, 321–328 (1986).
Gurnis, M. & Hager, B. H. Nature 335, 317–321 (1988).
Duffy, T. & Ahrens, T. J. J. geophys. Res. (in the press).
Kennett, B. L. N. IASPI 1991 Seismological Tables (Research School of Earth Sciences, Australia National Univ., 1991).
Dziewonski, A. M. & Woodhouse, J. H. J. geophys. Res. 88, 3247–3271 (1983).
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Vidale, J., Benz, H. Upper-mantle seismic discontinuities and the thermal structure of subduction zones. Nature 356, 678–683 (1992). https://doi.org/10.1038/356678a0
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DOI: https://doi.org/10.1038/356678a0
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