Seismic and related evidence on the structure of the Earth'supper mantle
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Abstract
A survey is given of seismological and related evidence on the density, incompressibility and rigidity in the outermost 1,000 Km of the Earth. Earlier evidence, including reference to the writer's Earth models A', A and B, is summarized with special reference to sources of uncertainty. Consideration is given to recent evidence from bodily and surface seismic waves, the recent reduction in the estimated moment of inertia of the Earth, and free Earth spheroidal and torsional oscillation data. Reference is made to current work of Bullen and Haddon which points to density gradients less than normal and to reduced S velocities in the upper mantle as well as to a larger radius for the core.
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References
AKI, K. & F. PRESS. 1961. Upper Mantle Structure under Oceans and Continents from Rayleigh waves. Geophys. Jour. Royal Astron. Soc., 5 : 292-305. DOI: https://doi.org/10.1111/j.1365-246X.1961.tb00338.x
BULLEN, K. E. 1936. The Variation of Density and the Ellipticities of Strata of Equal Density within the Earth. Mon. Not. Royal Astron. Soc., Geophys. Suppl., 3 : 395-401. DOI: https://doi.org/10.1111/j.1365-246X.1936.tb01747.x
----. 1937-38. The Ellipticity correction to travel times of P and S earthquakes waves. Mon. Not. Roy. Astron. Soc., Geophys. Suppl., 4, 143-57, 317-31, 332-5, 469-71. DOI: https://doi.org/10.1111/j.1365-246X.1937.tb03728.x
----. 1940-42. The Problem of the Earth's Density Variation. Bull. Seismol. Soc. America, 30 : 235-50; 32 : 19-29. DOI: https://doi.org/10.1785/BSSA0300030235
----. 1946. A Hypothesis on Compressibility at Pressures of the Order of a Million Atmospheres. Nature, 157 : 405. DOI: https://doi.org/10.1038/157405a0
BULLEN, K. E. 1949a. Compressibility-Pressure Hypothesis and the Earth's Interior. Mon. Not. Royal, Astron. Soc., Geophys. Suppl., 5 : 355-368. DOI: https://doi.org/10.1111/j.1365-246X.1949.tb02952.x
----. 1949b. On the Constitution of Mars. Mon. Not. Royal, Astron. Soc., 109 : 457-461. DOI: https://doi.org/10.1093/mnras/109.4.457
----. 1950. An Earth Model based on a Compressibility-Pressure Hypothesis. Mon. Not. Royal, Astron. Soc., Geophys. Suppl., 6 : 50-59. DOI: https://doi.org/10.1111/j.1365-246X.1950.tb02973.x
----. 1958. Solidity of the Inner Core. In Contributions in Geophysics (London, Pergamon), pp. 131-120.
----. 1960. Note on Cusps in Seismic Travel Times. Geophys. Jour. Royal, Astron. Soc., 3 : 354-359. DOI: https://doi.org/10.1111/j.1365-246X.1960.tb01708.x
----. 1961. Seismic Travel Times and Velocity Distributions. Bur. Centr. Séismol. Internat., A, 21 : 7-13.
BULLEN, K. E. & R. A. W. HADDON. 1967. Earth Oscillations and the Earth's Interior. Nature, 123 : 574-576. DOI: https://doi.org/10.1038/213574a0
CARDER, D. S. 1965. Upper Mantle from Travel Time Studies. U.S. Program for International, Upper Mantle Project, Progress Report, 1965, p. 9.
COOK, A. H. 1963. The Contribution of Observations of Satellites to the Determination of the Earth's Gravitational Potential. Space Sci. Rev., 2 : 355-437. DOI: https://doi.org/10.1007/BF00173951
DORMAN, J., M. EWING & J. OLIVER. 1960. Study of Shear-Velocity Distribution in the Upper Mantle by Rayleigh Waves. Bull. Seismol. Soc. America, 50 : 87-115.
DORMAN, J., J. EWING, & L. E. ALSOP. 1965. Oscillations of the Earth: New Core-Mantle Boundary Model based on Low-Order Free Vibrations. Proc. Nat. Acad. Sci., U. S., 54 : 348-368. DOI: https://doi.org/10.1073/pnas.54.2.364
GUTENBERG, B. 1951. PKKP, P'P', and the Earth's Core. Trans. American Geophys. Union, 32 : 373-90. DOI: https://doi.org/10.1029/TR032i003p00373
----. 1953. Wave Velocities at Depths between 50 and 600 Kilometers. Bull. Seismol. Soc. America, 43 : 223-232. DOI: https://doi.org/10.1785/BSSA0430030223
----. 1958. Velocity of Seismic Waves in the Earth's Mantle. Trans. American Geophys. Union, 39 : 486-489. DOI: https://doi.org/10.1029/TR039i003p00486
----. 1959. Physics of the Earth's Interior. New York (Academic Press).
JEFFREYS, H. 1939. The Times of P, S, and SKS and the velocities of P and S. Mon. Not. Roy. Astron. Soc., Geophys. Suppl., 4 : 498-533. DOI: https://doi.org/10.1111/j.1365-246X.1939.tb02912.x
----. 1947. On the Burton-on-Trent explosion of 1944 November 27. Mon. Not. Royal Astron. Soc., Geophys. Suppl., 5 : 99-104. DOI: https://doi.org/10.1111/j.1365-246X.1947.tb00345.x
----. 1952. The Times of P up to 30°. Mon. Not. Royal Astron. Soc., Geophys. Suppl., 6 : 348-364. DOI: https://doi.org/10.1111/j.1365-246X.1952.tb03023.x
JEFFREYS, Sir H. (1962. Travel Times for Pacific Explosions. Geophys. Jour. Royal Astron. Soc., 7 : 212-219. DOI: https://doi.org/10.1111/j.1365-246X.1962.tb00370.x
----. 1963. On the Hydrostatic Figure of the Earth. Geophys. Jour. Royal Astron. Soc., 8 : 196-202. DOI: https://doi.org/10.1111/j.1365-246X.1963.tb06283.x
JEFFREYS, H. & K. E. BULLEN. 1940, 1958. Seismological, Tables. Brit. Assn., Gray-Milne Trust.
LANDISMAN, M., Y. SATÔ & J. NAFE. 1965. Free Vibrations of the Earth and the Properties of its Deep Interior Regions; Part 1, Density. Geophys. Jour. Royal Astron. Soc., 9 : 439-502. DOI: https://doi.org/10.1111/j.1365-246X.1965.tb06320.x
LEHMANN, I. 1954. The Velocity of P and S Waves in the Upper Part of the Earth's Mantle. Publ. Bur. Séismol. Internat., A, 19 : 115-123.
----. S and the Structure of the Upper Mantle. Geophys. Jour. Royal, Astron. Soc., 4 : 124-138. DOI: https://doi.org/10.1111/j.1365-246X.1961.tb06808.x
----. 1962. The Travel Times of the Longitudinal Waves of the Logan and Blanca Atomic Explosions and their Velocities in the Upper Mantle. Bull. Séismol. Soc. Amer., 52 : 519-526. DOI: https://doi.org/10.1785/BSSA0520030519
NIAZI, M. & D. L. ANDERSON. 1965. Upper Mantle Structure of Western North America from Apparent Velocities of P Waves. Jour. Geophys. Res., 70 : 4633-4640. DOI: https://doi.org/10.1029/JZ070i018p04633
PEKERIS, C. L. 1966. The Internal Constitution of the Earth. Geophys. Jour. Royal Astron. Soc., 11 : 85-132. DOI: https://doi.org/10.1111/j.1365-246X.1966.tb03494.x
RAMSEY, W. H. 1948. On the Constitution of the Terrestrial Planets. Mon. Not. Royal Astron. Soc., 108 : 416-413 DOI: https://doi.org/10.1093/mnras/108.5.406
TAKEUCHI, H., F. PRESS & N. KOBAYASHI. 1959. Rayleigh-wave Evidence for the Low-velocity Zone in the Mantle. Bull. Seismol. Soc. America, 49 : 355-364. DOI: https://doi.org/10.1785/BSSA0490040355
TOKSÖZ, M. N. & D. L. ANDERSON. 1966. Phase Velocities of Long-period Surface Waves, and Structure of the Earth's Mantle: I, Great-circle Love and Rayleigh Wave Data. Jour. Geophys. Res., 71 : 1649-58. DOI: https://doi.org/10.1029/JZ071i006p01649
----. 1965. Introduction to the Theory of Seismology (3rd ed., reprinted). Cambridge (University Press).